US3180981A - Air cooled projection lamp - Google Patents

Air cooled projection lamp Download PDF

Info

Publication number
US3180981A
US3180981A US22870662A US3180981A US 3180981 A US3180981 A US 3180981A US 22870662 A US22870662 A US 22870662A US 3180981 A US3180981 A US 3180981A
Authority
US
United States
Prior art keywords
front
compartment
rear
lamp
air
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.)
Expired - Lifetime
Application number
Inventor
Ulffers Heinz
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 to DEZ0007503 priority Critical
Application filed by Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of US3180981A publication Critical patent/US3180981A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/16Cooling; Preventing overheating
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2026Gas discharge type light sources, e.g. arcs

Description

A ril 27, 1965 H. ULFFERS AIR COOLED PROJECTION LAMP Filed Oct. 5, 1962 United States Patent 2 Claims. (Cl. 240-47 The invention relates to improvements in projection lamps provided with air cooling means and particularly is directed to a projection lamp which employs as a source of light a high pressure gas discharge lamp whose ignition device is arranged in the lamp housing so as to be subjected to the cooling effect of an air current passing through the lamp housing.

It is an object of the invention to provide a novel method and novel means for effectively cooling not only the high pressure gas discharge lamp in the lamp housing, but also the ignition device and the connecting terminals on the lamp "and the ignition device. This is accomplished by providing means for directing a cooling air current over the ignition device-whereby this cooling air currrent preferably is concentrated upon the HF terminal of the ignition device-to the lamp bulb and the reflecting mirrors associated therewith and from there to a suction discharge opening or channel in the top of the lamp housing.

Another object of the invention is to produce a cooling air currrent by making use of the thermal ascension somewhat preheated which is very favorable for a cool-.

ing of the high pressure gas discharge lamp because the latter will not be hit by an excessively cool air current which would decrease the light capacity relatively to the electricity consumption.

With these and other objects in view the invention will now be described in greater detail with reference to the accompanying drawing, in which:

FIG. 1 illustrates diagrammatically in a side elevational view and with certain parts in section and other parts broken away, an air cooled projection lamp employing a high pressure gas discharge lamp and an ignition device therefor, and

FIG. 2 illustrates a tubular connecting terminal between the ignition device and the lamp and which may be employed in FIG. 1 in place of the connecting terminal provided with the cooling fins.

Referring to FIG. 1, a lamp housing 1 is provided in its rear wall 2 with air inlet apertures 3 and with a vertical partition wall 4 dividing the interior of the lamp housing 1 into a front compartment 5 and a rear compartment 6. The top of the lamp housing 1 is provided with an upwardly directed tubular air discharge channel '7 in which is arranged a suitable suction blower 8 for assisting in the exhaust of the air from the interior of aisassi Patented Apr. 27, 1965 ice the housing 1. In the rearcompartment 6 is arranged anignition device 9. The front compartment 5 has mounted therein the main reflecting mirror 10, the high pressure gas discharge lamp 11 and the auxiliary reflecting mirror 12 with their respective supporting accessories 13.

The ignition device 9 is connected with its HF ter- 7 minal 15 to a conductor 16 leading to the lower terminal 17 of the high pressure gas discharge lamp 11. This HF terminal 15 is provided with cooling fins 18 to facilitate the heat radiation. As illustrated in FIG. 2, a somewhat modified HF terminal may consist of a tubular member 150 provided with apertures 19 in its wall.

The lower portion of the partition 4 is provided with a cut-out 20 through which passes the conductor 16. This cut-out 20 is of sufiicient size that it also permits to pass therethrough the main portion of the air currrent which 1. This main portion of the air current passes overthe ignition device 9, is concentrated upon the HF terminal 15 before it passes through the cut-out 2t) and then passes upwardly along the reflecting mirrors 10 and 12 and the lamp 11 and finally is discharged from the lamp housing 1 by way of the channel 7 with the assistance of the suction blower 8.

A secondary air cooling currrent passes directly from the inlet apertures 3 through the upper portion of the compartment 6 and then through the discharge channel 7 and in this manner vents the compartment 6 containing the ignition device 9.

What I claim is:

l. The combination with a projection lamp housing having front, side and rear walls connected by a top wall, said front Wall being provided with a light emission opening, of a substantially vertical partition spaced between said front and rear walls separating said housing into a front compartment and a rear compartment, a high pressure gas discharge lamp in said front compartment, a reflector in front of said partition for projecting light rays through said light emission opening in said front wall, an ignition device with a HP terminal in said rear compartment connected to said lamp, said high frequency 7 terminal being arranged to extend through a cut-out in whereby a cooling circulatory air currrent is caused to pass first over said ignition device in said rear compartment and its HF terminal and then through said cut-out and upwardly over said high pressure gas discharge lamp and finally through said air exhaust channel.

'2. The combination with a projection lamp housing having front, side and rear walls connected by a top wall, a light emission opening in said front wall, of a substantially vertical partition between said front and rear walls separating said housing into a front compartment and a rear compartment, a high pressure gas discharge lamp in said front compartment, a reflector for directing light rays from said lamp through said light emission opening, an ignition device with a HP terminal in said rear compartment, the lower end of said partition havinga slot adjacent the lower portion of the housing for permitting the passage of an electric conductor from said HF termi- References flirted by the Examiner UNITED STATES PATENTS Dale 339112 Blohm 88-24 Greppin 240--1.4 Critoph et a1 24047 Streich 24047 Wilton 8824 13 NGRTON ANSHER, Primary Examiner.

I. SCHNALL, Examiner.

Claims (1)

1. THE COMBINATION WITH A PROJECTION LAMP HOUSING HAVING FRONT, SIDE AND REAR WALLS CONNECTED BY A TOP WALL SAID FRONT WALL BEING PROVIDED WITH A LIGHT EMISSION OPENING, OF A SUBSTANTIALLY VERTICAL PARTITION SPACED BETWEEN SAID FRONT AND REAR WALLS SEPARATING SAID HOUSING INTO A FRONT COMPARTMENT AND A REAR COMPARTMENT, A HIGH PRESSURE GAS DISCHARGE LAMP IN SAID FRONT COMPARTMENT, A REFLECTOR IN FRONT OF SAID PARTITION FOR PROJECTING LIGHT RAYS THROUGH SAID LIGHT EMISSION OPENING IN SAID FRONT WALL, AGNITION DEVICE WITH A HF TERMINAL IN SAID REAR COMPARTMENT CONNECETED TO SAID LAMP, SAID HIGH FREQUENCY TERMINAL BEING ARRANGED TO EXTEND THROUGH A CUT-OUT IN THE LOWER PORTION OF SAID PARTITION FOR PERMITTING THE PASSAGE OF AN ELECTRIC CONDUCTOR FROM SAID HF TERMINAL TO SAID LAMP AND FOR PERMITTING THE PRESSURE OF AN AIR CURRENT FROM SAID REAR COMPARTMENT TO SAID FRONT COMPARTMENT, AN AIR EXHAUST CHANNEL IN SAID TOP WALL, INTAKE OPENINGS IN SAID REAR WALL FOR INTRODUCING AIR INTO SAID REAR COMPARTMENT, BLOWER MEANS IN SAID AIR EXHAUST CHANNEL FOR DISCHARGING AIR FROM THE TOP OF SAID HOUSING, WHEREBY A COOLING CIRCULATORY AIR CURRENT IS CAUSED TO PASS FIRST OVER SAID IGNITION DEVICE IN SAID REAR COMPARTMENT AND ITS HF TERMINAL AND THEN THROUGH SAID CUT-OUT AND UPWARDLY OVER SAID HIGH PRESSURE GAS DISCHARGE LAMP AND FINALLY THROUGH SAID AIR EXHAUST CHANNEL.
US22870662 1961-10-12 1962-10-05 Air cooled projection lamp Expired - Lifetime US3180981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ0007503 1961-10-12

Publications (1)

Publication Number Publication Date
US3180981A true US3180981A (en) 1965-04-27

Family

ID=7620165

Family Applications (1)

Application Number Title Priority Date Filing Date
US22870662 Expired - Lifetime US3180981A (en) 1961-10-12 1962-10-05 Air cooled projection lamp

Country Status (2)

Country Link
US (1) US3180981A (en)
GB (1) GB952274A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564231A (en) * 1968-09-26 1971-02-16 Poly Optics Illumination device
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
US3733481A (en) * 1970-06-11 1973-05-15 Bausch & Lomb Fiber optics light source
US4092705A (en) * 1972-09-29 1978-05-30 Medical Products Octagon Ab Method of illuminating an object and a device for carrying out the method
US4321659A (en) * 1980-06-30 1982-03-23 Wheeler Ernest E Narrow-band, air-cooled light fixture
US4356535A (en) * 1980-09-17 1982-10-26 Chu Chung S Modern fan device
US4701833A (en) * 1986-07-16 1987-10-20 Vari-Lite, Inc. Ventilation system for stage light instrument
US4886328A (en) * 1985-09-11 1989-12-12 Yazaki Corporation Display apparatus for vehicle with means to prevent solar heating thereof
US4935853A (en) * 1989-02-03 1990-06-19 Collins William J Motion-controlled light with arc lamp
WO2002031593A1 (en) * 2000-10-11 2002-04-18 Bård Eker Industrial Design As Cooling device in a projector
US20020197158A1 (en) * 2001-06-22 2002-12-26 Nien-Hui Hsu Cooling device for projector
US20030090633A1 (en) * 2000-06-27 2003-05-15 Katsuo Miyata Image display apparatus
US6575599B1 (en) * 1998-09-08 2003-06-10 Ushiodenki Kabushiki Kaisha Light source device for projection apparatus
US20060193139A1 (en) * 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US20080123342A1 (en) * 2006-11-08 2008-05-29 Michael Robert Gluszczak Device and system for an optical element holder
US7397384B1 (en) 2005-02-11 2008-07-08 Genlyte Thomas Group, Llc Track lighting system current limiting device
WO2008092503A1 (en) * 2007-01-31 2008-08-07 Osram Gesellschaft mit beschränkter Haftung Reflector lamp
US7465077B1 (en) 2004-05-06 2008-12-16 Genlyte Thomas Group, Llc Retention spring for luminaire reflector
US7513675B2 (en) 2004-05-06 2009-04-07 Genlyte Thomas Group Llc Modular luminaire system with track and ballast attachment means
US20150117019A1 (en) * 2012-05-04 2015-04-30 GE Lighting Solutions, LLC Lamp with heat sink and active cooling device
US9587820B2 (en) 2012-05-04 2017-03-07 GE Lighting Solutions, LLC Active cooling device
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
US10340424B2 (en) 2013-10-24 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH071374B2 (en) * 1984-03-06 1995-01-11 株式会社ニコン The light source device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254210A (en) * 1915-04-03 1918-01-22 Dale Lighting Fixture Company Electric-light fixture.
US1831762A (en) * 1927-04-02 1931-11-10 Trans Lux Daylight Picture Ventilating system for projectors
US2069950A (en) * 1933-11-02 1937-02-09 Ernest H Greppin Surgical lamp
US2278916A (en) * 1940-04-13 1942-04-07 Spencer Lens Co Illuminating device
US2431520A (en) * 1945-02-20 1947-11-25 Bruning Charles Co Inc Photoprinting machine
US3117489A (en) * 1960-10-14 1964-01-14 American Optical Corp Image projector with air circulating means

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254210A (en) * 1915-04-03 1918-01-22 Dale Lighting Fixture Company Electric-light fixture.
US1831762A (en) * 1927-04-02 1931-11-10 Trans Lux Daylight Picture Ventilating system for projectors
US2069950A (en) * 1933-11-02 1937-02-09 Ernest H Greppin Surgical lamp
US2278916A (en) * 1940-04-13 1942-04-07 Spencer Lens Co Illuminating device
US2431520A (en) * 1945-02-20 1947-11-25 Bruning Charles Co Inc Photoprinting machine
US3117489A (en) * 1960-10-14 1964-01-14 American Optical Corp Image projector with air circulating means

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564231A (en) * 1968-09-26 1971-02-16 Poly Optics Illumination device
US3733481A (en) * 1970-06-11 1973-05-15 Bausch & Lomb Fiber optics light source
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
US4092705A (en) * 1972-09-29 1978-05-30 Medical Products Octagon Ab Method of illuminating an object and a device for carrying out the method
US4321659A (en) * 1980-06-30 1982-03-23 Wheeler Ernest E Narrow-band, air-cooled light fixture
US4356535A (en) * 1980-09-17 1982-10-26 Chu Chung S Modern fan device
US4886328A (en) * 1985-09-11 1989-12-12 Yazaki Corporation Display apparatus for vehicle with means to prevent solar heating thereof
US4701833A (en) * 1986-07-16 1987-10-20 Vari-Lite, Inc. Ventilation system for stage light instrument
US4935853A (en) * 1989-02-03 1990-06-19 Collins William J Motion-controlled light with arc lamp
US6575599B1 (en) * 1998-09-08 2003-06-10 Ushiodenki Kabushiki Kaisha Light source device for projection apparatus
US20030090633A1 (en) * 2000-06-27 2003-05-15 Katsuo Miyata Image display apparatus
US6783248B2 (en) 2000-06-27 2004-08-31 Matsushita Electric Works, Ltd. Image display apparatus
WO2002031593A1 (en) * 2000-10-11 2002-04-18 Bård Eker Industrial Design As Cooling device in a projector
US20020197158A1 (en) * 2001-06-22 2002-12-26 Nien-Hui Hsu Cooling device for projector
US6739831B2 (en) * 2001-06-22 2004-05-25 Coretronic Corporation Cooling device for projector
US7465077B1 (en) 2004-05-06 2008-12-16 Genlyte Thomas Group, Llc Retention spring for luminaire reflector
US7914198B2 (en) 2004-05-06 2011-03-29 Gentyle Thomas Group LLC Modular luminaire system
US20090180301A1 (en) * 2004-05-06 2009-07-16 Genlyte Thomas Group Llc Modular luminaire system
US7513675B2 (en) 2004-05-06 2009-04-07 Genlyte Thomas Group Llc Modular luminaire system with track and ballast attachment means
US20110133671A1 (en) * 2005-02-11 2011-06-09 Genlyte Thomas Group Llc Track lighting system current limiting device
US7911351B2 (en) 2005-02-11 2011-03-22 Genlyte Thomas Group Llc Track lighting system current limiting device
US20080252234A1 (en) * 2005-02-11 2008-10-16 Genlyte Thomas Group, Llc Track lighting system current limiting device
US8144025B2 (en) 2005-02-11 2012-03-27 Genlyte Thomas Group Llc Track lighting system current limiting device
US7397384B1 (en) 2005-02-11 2008-07-08 Genlyte Thomas Group, Llc Track lighting system current limiting device
US20060193139A1 (en) * 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US7144140B2 (en) * 2005-02-25 2006-12-05 Tsung-Ting Sun Heat dissipating apparatus for lighting utility
US8100562B2 (en) * 2006-11-08 2012-01-24 Lumenis Ltd. Device and system for an optical element holder
US7740378B2 (en) * 2006-11-08 2010-06-22 Lumenis Ltd. Device and system for an optical element holder
US20080123342A1 (en) * 2006-11-08 2008-05-29 Michael Robert Gluszczak Device and system for an optical element holder
US20100142206A1 (en) * 2006-11-08 2010-06-10 Michael Robert Gluszczak Device and system for an optical element holder
WO2008092503A1 (en) * 2007-01-31 2008-08-07 Osram Gesellschaft mit beschränkter Haftung Reflector lamp
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
US20150117019A1 (en) * 2012-05-04 2015-04-30 GE Lighting Solutions, LLC Lamp with heat sink and active cooling device
US9587820B2 (en) 2012-05-04 2017-03-07 GE Lighting Solutions, LLC Active cooling device
US9841175B2 (en) 2012-05-04 2017-12-12 GE Lighting Solutions, LLC Optics system for solid state lighting apparatus
US10139095B2 (en) 2012-05-04 2018-11-27 GE Lighting Solutions, LLC Reflector and lamp comprised thereof
US10340424B2 (en) 2013-10-24 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component

Also Published As

Publication number Publication date
GB952274A (en) 1964-03-11

Similar Documents

Publication Publication Date Title
US2974669A (en) Combination cigarette holder, lighter, and smoke purifier, filter, and cooler
US3733481A (en) Fiber optics light source
US6523977B2 (en) Illuminating apparatus including a plurality of light sources that generate primary color light components
US20020181247A1 (en) Vehicle headlight discharge lamp
CN100369491C (en) Crystal projecter and lamp
US4274130A (en) Combination flashlight and high intensity light source
GB1490482A (en) Apparatus for testing the resistance of samples to light and/or weather
JPH04312793A (en) Acoustic resonance operation system of xenon-metal halide lamp by unidirectional current
GB1346527A (en) Lighting fixtures
US2431520A (en) Photoprinting machine
JP2002124123A (en) Vehicle headlight
JPS5638765A (en) Electric discharge lamp device
GB1121246A (en) Improvements in luminaire
JPH09129007A (en) Headlamp for vehicle
US3021422A (en) Photographic light unit
JPS52135581A (en) Metal halide discharge lamp with incandescent light characteristic output
GB952274A (en) Improvements in or relating to projection lamps
US1531171A (en) Electric fire
US4536832A (en) Replaceable light source assembly
GB1250590A (en)
ES2162634T3 (en) Lamp reflector.
US3331940A (en) Portable electric windshield defroster
US3720822A (en) Xenon photography light
US2269794A (en) Ventilated lamp house
US8322861B2 (en) Lamp source module and projection system