US2160648A - Mounting arrangement for a high intensity light source - Google Patents

Mounting arrangement for a high intensity light source Download PDF

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Publication number
US2160648A
US2160648A US189006A US18900638A US2160648A US 2160648 A US2160648 A US 2160648A US 189006 A US189006 A US 189006A US 18900638 A US18900638 A US 18900638A US 2160648 A US2160648 A US 2160648A
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US
United States
Prior art keywords
chamber
tube
high intensity
lamp
window
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
US189006A
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English (en)
Inventor
Jong Hendrik De
Bergmans Jan
Kortenray Willem
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.)
General Electric Co
Original Assignee
General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
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Publication of US2160648A publication Critical patent/US2160648A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space

Definitions

  • Our invention relates to a mounting arrangement for a high intensity light source, and more particularly to a liquid-cooled mounting therefor.
  • the light projector according to our iny reduced to such an extent that, particularly with searchlight and projector installations, the whole of the device comprising the tube, the reflector and the members for circulating the cooling medium have been reduced to much smaller dimensions than any heretofore known.
  • the casing of the device contains a guide member for the cooling liquid which is formed in such manner that the members for the supply and the discharge of the cooling liquid are provided at the one end of the device and the current supply members of the tube at the other end thereof.
  • the novel device according to the invention is .of very simple construction, the aperture provided in the reflector for the passage of radiations being closed by a transparent guide mem- 40, ber which is arranged and formed in such man-4 nerthat the cooling liquid flows along it on both sides but in opposite directions.
  • a suitable form of construction of the device is obtained when the supply member of the cooling liquid extends axially with respect to the tube and isv surrounded by a chamber provided with an outlet tube and communicating with the cooling chamber.
  • the electric supply conductors of the discharge tube are preferably arranged in such manner that the one supply conductor is connected to the reector so that the reflector and the casing form part of the circuit and preferably are 55 grounded, whereas the other supply conductor extends out of the device and is insulated from the casing.
  • the device in such manner that the tube, the guide member, the reiiector l and the electric supply conductors are united to form a unit which is arranged in the casing so as to be readily removable and replaceable therein.
  • the guide member is preferably arranged on the reflector in such manner as to be 10 readily removable and replaceable.
  • the guide member is to be used only for the emission of visible rays it is advantageous to form the guide member of a material transparent to visible rays but which 16 will absorb the ultraviolet rays. But if, in such case, the radiation window or lens of the casing, instead of the aforesaid guide member, is made from a material transparent to light and retaining the ultraviolet rays, the ultraviolet rays n emitted by the discharge tube willl accordingly be absorbed solely by the window. These retained radiations are transformed into heat which may give rise to an excessive strain on the window, since the latter is cooled on one side 25 only.
  • FIG. 1 is a longitudinal sectional view of a device according to our invention while Figs. 2 and 3 are cross-sections of the .m device taken on the lines 2-2 and 3-3 respectively of Fig. 1.
  • the illustrated high-pressure mercury-vapor discharge tube l consists of a cylindrical quartz tube which is narrowed at the ends and contains 4,-, two incandescent electrodes 2 and 3 which protrude during operation from the mercury by which they are surrounded.
  • the said tube also contains a gas filling.
  • the discharge tube l is mounted and arranged in the focal line of a likewise cylindrical reflector member consisting of a metal tube 5 which has secured to its inner wall a suitable reflecting coating or body 4 of suitable shape. A portion of the cylindrical wall of the metal tube 5 is cut away to provide a lon- 55 gitudinally extending opening parallel to the axis of the discharge tube 'I.
  • This open side of the tube 5 is closed by a plate-.shaped guide or partition member 6 transparent to radiations and mounted between the tube '5 and the reflector coating l.
  • 'Ihe guide member 6 consists in the preferred embodiment of glass transparent to visible rays and absorbing ultraviolet rays, said device is indicated by the arrows in Fig. 1.
  • the guide member 5 may be secured in place in the metal tube 5 by means of .a wire secured to the tube5, said wire not being shown in the drawing.
  • the tube 5 is provided with a flange 8.
  • the tube 5 contains an insulating body 9 slightly spaced from the 'end of the guide member 5 to thereby provide a slit l.
  • the insulating body 5 has secured to it that end of the discharge tube I which contains the electrode 2, and is provided furthermore with a contact member Il which is electrically connected to the electrode 2. 'I'he current supply wire of the electrode 3.
  • This unit is arranged in the cylindrical bore 24, which acts as a cooling chamber, of a casing Il', said unit being secured to the latter by means of a cap nut I2.
  • a cap nut I2 At a suitable point with'respect to the a plurality of bores or openings Il therethrough.
  • 'I'he wall I4 is also provided with a central bore 25 having a screw thread, said bore serving to accommodate a cooling water supply member I5 provided with a flange I5.
  • the several bores I1 are preferably arranged concentrically about the said central bore 25.
  • a tube I8 which is provided with an outlet tube 22.
  • the contact member III fits into a contact bus 25 of a cable connecting piece 20.
  • the latter is provided with a fastening or clamping device 2l which grips the screw cap I2.
  • the cable 20 leads to the terminal of a source of current whichl generally consists of a transformer whose other terminal is grounded.
  • the particular discharge tube I illustrated has an internal diameter of 2 mm.
  • the tube is operated with a specific load of 400 watts per centimeter and has an intrinsic brilliance of about 33,000 international candles per vsquare ⁇ centimeter.
  • 'I'he specific luminous output amounts to about lumens per watt and the operating mercury vapor pressure to about 100 atmospheres.
  • a light projection device comprising a casing provided with a chamber having a window therein, a high intensity tubular lamp mounted in said chamber behind said window, a reflector member also mounted in said chamber behind said lamp, current-supply connections at one end of said device for supplying current to said lamp, inlet and outlet members at the other end of said device communicating with said chamber for circulating a cooling liquid therethrough, and guide means transparent to radiations from said lamp mounted in said chamber between said lamp and said window and arranged to control the flow of the cooling medium from said inlet member through said chamber past said lamp along one side of the guide means and back along the other side of the guide means to said outlet member.
  • a light projection device comprising a casing provided with achamber having a window therein, a high intensity tubular lamp mounted in said chamber behind said window, a reflector member also mounted in said chamber and enclosing said lamp, said reiiector member having a longitudinally extending aperture therein between said window and said lamp, current-supply connections for said lamp, inlet and outlet members communicating with said chamber for circulating a cooling liquid therethrough, and a guide member transparent to light rays mounted on said reflector member over the said aperture therein, said guide member being arranged to control the ilow of the cooling liquid in said chamber so that it flows along both sides of said guide member but in opposite directions.
  • a light projection device comprising a casing provided with a chamber having a window therein, a high intensity tubular lamp mounted in said chamber behind said window and having current-supply conductors, a metallic reflector member also mounted in said chamber adjacent said lamp.
  • one of said current-supply conductors being connected to said reflector member and the other o! said conductors being led through and insulated from one end of said casing, inlet and outlet members at the opposite end of said casing communicating with said chamber for circulating a cooling liquid therethrough, and a guide member mounted in said chamber and arranged to control the ilow of the cooling liquid from said inlet member through said chamber past said lamp and back to said outlet member.
  • a light projection device comprising a casing provided with a chamber having a window therein, a high intensity tubular lamp mounted ln said chamber behind said window, a reector member also mounted in said chamber behind said lamp, current-supply connections at one end to control the ow of the cooling medium from said inlet member through said chamber past said lamp and back to said outlet member, said lamp, reilector member, ⁇ guide member and current-supply connections being so constructed and arranged as to form a unitarystructure whereby the same may be removed from and replaced in said casing as a unit.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Projection Apparatus (AREA)
US189006A 1937-02-13 1938-02-05 Mounting arrangement for a high intensity light source Expired - Lifetime US2160648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202655X 1937-02-13

Publications (1)

Publication Number Publication Date
US2160648A true US2160648A (en) 1939-05-30

Family

ID=5772561

Family Applications (1)

Application Number Title Priority Date Filing Date
US189006A Expired - Lifetime US2160648A (en) 1937-02-13 1938-02-05 Mounting arrangement for a high intensity light source

Country Status (6)

Country Link
US (1) US2160648A (enrdf_load_stackoverflow)
BE (1) BE426311A (enrdf_load_stackoverflow)
CH (1) CH202655A (enrdf_load_stackoverflow)
FR (1) FR833498A (enrdf_load_stackoverflow)
GB (1) GB494068A (enrdf_load_stackoverflow)
NL (1) NL50898C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435300A (en) * 1945-06-02 1948-02-03 Edwin C Weiskopf Projector for microscopes and other magnifying devices
US2435299A (en) * 1943-12-27 1948-02-03 Edwin C Weiskopf Microscope projecting and viewing apparatus
US2477396A (en) * 1946-08-27 1949-07-26 Edwin C Weiskopf Projecting microscope and viewing device
US2642521A (en) * 1949-05-26 1953-06-16 Ozalid Co Ltd End connection for tubular lamps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435299A (en) * 1943-12-27 1948-02-03 Edwin C Weiskopf Microscope projecting and viewing apparatus
US2435300A (en) * 1945-06-02 1948-02-03 Edwin C Weiskopf Projector for microscopes and other magnifying devices
US2477396A (en) * 1946-08-27 1949-07-26 Edwin C Weiskopf Projecting microscope and viewing device
US2642521A (en) * 1949-05-26 1953-06-16 Ozalid Co Ltd End connection for tubular lamps

Also Published As

Publication number Publication date
GB494068A (en) 1938-10-19
FR833498A (fr) 1938-10-21
CH202655A (de) 1939-01-31
BE426311A (enrdf_load_stackoverflow)
NL50898C (enrdf_load_stackoverflow)

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