US2669676A - Electric lamp for mixed light - Google Patents

Electric lamp for mixed light Download PDF

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Publication number
US2669676A
US2669676A US208721A US20872151A US2669676A US 2669676 A US2669676 A US 2669676A US 208721 A US208721 A US 208721A US 20872151 A US20872151 A US 20872151A US 2669676 A US2669676 A US 2669676A
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US
United States
Prior art keywords
bulb
filament
vessel
lamp
discharge
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
US208721A
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English (en)
Inventor
Buser Johann
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Individual
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Individual
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Filing date
Publication date
Priority to NL7018225.A priority Critical patent/NL158929B/xx
Priority to BE501021D priority patent/BE501021A/xx
Priority to CH303446D priority patent/CH303446A/de
Application filed by Individual filed Critical Individual
Priority to US208721A priority patent/US2669676A/en
Priority to FR1035657D priority patent/FR1035657A/fr
Application granted granted Critical
Publication of US2669676A publication Critical patent/US2669676A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight

Definitions

  • lamps for mixed light consist of a bulb with a base in which the illuminating bodies such as filament, mercury and/or sodium vapor discharge elements are arranged.
  • This type of lamp serves for mixing light of different colours to obtain a light which is as similar as possible to normal daylight.
  • quartz which may be subjected to very high temperatures was chosen for the discharge tube and the volume of the discharge vessel was kept small.
  • the subject of the present invention bases on the fact that the heat units available immediately after switching on the lamp from the heat radiator are fully utilized for controlling and for increasing the pressure in the discharge vessel.
  • the discharge vessel could be shaped in such a way and be given such a volume that the wall of the vessel surrounding the mercury vapour arc would have such a distance from the are that the material of the vessel could not be softened by the high temperature.
  • the volume of the vessel must be chosen in such a way that the heat coming from the heat radiator permits a maximum pressure rise.
  • the two vessels i. e. high-pressure mercury vessel and lamp bulb
  • the two vessels can be joined by melting so as to form one piece.
  • the object of the invention may be attained if the discharge vessel is designed in such a way that the discharge distance is smaller than the maximum diameter of the vessel along the discharge path.
  • Another object of the invention is to make possible also a higher loadin of the heat radiator.
  • the main vessel of such lamps which contains the filament may contain a gas of high pressure under static working conditions. The rate of evaporation of the material of the filament can thus be decreased in known manner.
  • the lamp vessel contains inert gases and possibly metals which evaporize easily.
  • the exterior bulb must correspond in shape and size with the lamp unit to avoid cool spots.
  • Glass with a high melting point is used as transparent material of the lamp.
  • the use of hard glass or quartz material does not fall under the invention.
  • Figs. 1, 2 and 3 show three constructional examples of the present invention.
  • Fig. 1 shows a diagrammatic partial section of an electric lamp for mixed light with a discharge vessel for the operation of a super high pressure mercury discharge arc and a filament lamp.
  • the discharge vessel is connected with the exterior bulb by a fin (base with current lead to electrode)
  • a fin base with current lead to electrode
  • V o Gris the lamps main vessel (exterior bulb).
  • S shows a standard Edison screw base.
  • Another base type e. g. a bayonet baselnight, of course,
  • Fig. 2 shows a diagrammatic partial section of an electric lamp for mixed light similar to the oneshown in Fig. 1.
  • the shape of the discharge vessel .of :the high pressure are -(Gz) isdifierent.
  • the front face of the discharge vessel is connected .with .the surrounding air.
  • Fig. 3 shows a diagrammatic partial section of an electric lamp for mixed light, preferably for use in projectors and for vertical operation.
  • the filament (W2) is arranged in .one .plane to make possible focusing .of the light of ,the high pressurearc and the filament in a'lens.
  • the discharge vessel does not necessarily .form the axis of the main vessel in this type .ofrlamp.
  • Fig. 3 also shows a so.-called ignition .pin which is arranged close to the electrode directed against the lamps .base and, which is connected with .a resistanceof high value (W3) .to the highest-potential of the current source.
  • W3 resistanceof high value
  • -the lamp. is preferably made by one single vessel which has two chambers completely separated from each other. In oneof the chambers the-mercurydischarge are will be established. This chamber contains the two electrodes and the mercurycondensate. The other chamber containstheheat radiator which preferably takes the form .of la filament made-from tungsten.
  • the base body of the bulb thus rapidly increasing the saturation pressure in the bulb.
  • the are in the mercury tube heats the inner wall of the vessel whereby also a rapid increase in vapour pressure is efiected.
  • the maximum cross section of the vessel (G2) has been considerably increased in comparison with customary discharge tubes.
  • the cooling surface has thus been increased in such a way thatthe discharge vessel cannot be overheated. This is 'th'e'most important point for the operation of the lamp in accordance with the present invention.
  • Mercury vapour light is a so-called cold light.
  • Much power is required to heat the discharge vessel.
  • the comparatively high pressure necessary canonlybeobtained by heating a base ,body maglelof mercury. This is effected by using as fully .as possible an element which is required for improving the quality of the light and which produces much heat, such as a filament. It is thus possible to improve considerably the ratio between light and heat.
  • the rate of evaporation of the filament glow,- ilflg ill a high pressure atmosphere isconsiderably smaller than with known filament lamps. It is thus ossible to stress the filamnt more than is customary with known filament lamps. This results in adifierent ,light colour of the filament which is of special advantage since the high pressure tube produces a spectrum which as men,- tioned above has also a continuity and w'l'iich gives espec a l .a a r io i th S i trum.
  • the present invention does not relate to .the electric wiring which 'should' be substantially similar to that of the lamp disclosed in the Patent 'No. 2,329,455. The wholeeconomy, i. e.
  • aii electric lamp for mixed light comprising in z;ombination, an outer bulb, an inner withinsaidlouter bulb, high pressure air-"c rclining means within said inner bulb'fsaicl means form, g an arc the length of vzhichi's less' than the greatest diameter of said inner bulbn'ieasured inthe direction of the are, a carrier located said outer-bulb and carrying saidinner bulb, a ⁇ fin"connecting"said carrier with the V walls of emester bulb, said fin beingtlii than the walls of 'said outer bulb a filament portedby said carrier outside of said'in'ne'r bulb and adjacent thereto, mercury within said inner bulb and adapted-to be evaporated bysaid filament, an-ine'rt' gas in said outer bulb, a 'vap
  • An electric'lampfor mixed light comprising, in combination, an outer bulb, an inner'bu'lb within said outer bulb, high pressure arc forriiing means within said inner bulb, said means forming an arc thelength of which is lessthari the greatestdiameter of said inner bulb masured inthe direction of the arc, a carrier located W ihig a brie .brl an r a d iui rlaaiiet nsci n a d,' r -lw h.
  • An electric lamp for mixed light comprising, in combination, an outer bulb, an inner bulb within said outer bulb, high pressure arc-forming means within said inner bulb, said means forming an arc the length of which is less than the greatest diameter of said inner bulb measured in the direction of the are, a carrier located within said outer bulb and carrying said inner bulb, a fin connecting said carrier with the inner walls of said outer bulb, said fin being thinner than the walls of said outer bulb, a filament supported by said carrier outside of said inner bulb and adjacent thereto, mercury within said inner bulb and adapted to be evaporated by said filament, an inert gas within said outer bulb, a vaporizable metal body in said outer bulb, said inner bulb being of elongated form and communicating with the interior of said outer bulb, and means supplying electrical current to said arcforming means and said filament.
  • An electric lamp for mixed light comprising, in combination, an outer bulb, an inner bulb within said outer bulb, high pressure arc-forming means within said inner bulb, said means forming an arc the length of which is less than the greatest diameter of said inner bulb measured in the direction of the are, a carrier located within said outer bulb and carrying said inner bulb, a fin connecting said carrier with the inner walls of said outer bulb, said fin being thinner than the walls of said outer bulb, a filament supported by said carrier outside of said inner bulb and adjacent thereto, mercury within said inner bulb and adapted to be evaporated by said filament, an inert gas within said outer bulb, a vaporizable metal body in said outer bulb, said are being substantially uniformly spaced from the Walls of said outer bulb, said filament consisting of a plurality of coils located in one plane, an ignition pin in said inner bulb, and means supplying electrical current to said arc-forming means, said ignition pin and said filament.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
US208721A 1951-01-31 1951-01-31 Electric lamp for mixed light Expired - Lifetime US2669676A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL7018225.A NL158929B (nl) 1951-01-31 Werkwijze en inrichting voor spectraalanalyse.
BE501021D BE501021A (pt) 1951-01-31
CH303446D CH303446A (de) 1951-01-31 1950-02-02 Mischlichtlampe.
US208721A US2669676A (en) 1951-01-31 1951-01-31 Electric lamp for mixed light
FR1035657D FR1035657A (fr) 1951-01-31 1951-02-02 Lampe électrique à lumière mixte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US208721A US2669676A (en) 1951-01-31 1951-01-31 Electric lamp for mixed light

Publications (1)

Publication Number Publication Date
US2669676A true US2669676A (en) 1954-02-16

Family

ID=22775754

Family Applications (1)

Application Number Title Priority Date Filing Date
US208721A Expired - Lifetime US2669676A (en) 1951-01-31 1951-01-31 Electric lamp for mixed light

Country Status (5)

Country Link
US (1) US2669676A (pt)
BE (1) BE501021A (pt)
CH (1) CH303446A (pt)
FR (1) FR1035657A (pt)
NL (1) NL158929B (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110833A (en) * 1961-02-21 1963-11-12 Westinghouse Electric Corp Multiple envelope high pressure mercury vapor discharge lamp
WO2002029851A1 (en) * 2000-10-04 2002-04-11 Theodore Mcbain Independent dual-function light bulb

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208603A (en) * 1979-02-08 1980-06-17 General Electric Company Electric lamp having improved inlead construction

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956599A (en) * 1932-02-13 1934-05-01 Sperti Lamp Corp Lamp
US2020737A (en) * 1932-12-24 1935-11-12 Gen Electric Gaseous electric discharge arc lamp
GB493831A (en) * 1937-06-04 1938-10-14 Philips Nv Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube
US2163428A (en) * 1931-07-21 1939-06-20 Gen Electric Enclosed arc lamp
US2212879A (en) * 1936-12-18 1940-08-27 Gen Electric Electric discharge lamp
US2265396A (en) * 1937-09-18 1941-12-09 Gen Electric Gaseous electric discharge device
US2275768A (en) * 1939-06-17 1942-03-10 Gen Electric Electric lamp
US2277876A (en) * 1938-11-09 1942-03-31 Michel E Macksoud Electric lamp

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163428A (en) * 1931-07-21 1939-06-20 Gen Electric Enclosed arc lamp
US1956599A (en) * 1932-02-13 1934-05-01 Sperti Lamp Corp Lamp
US2020737A (en) * 1932-12-24 1935-11-12 Gen Electric Gaseous electric discharge arc lamp
US2212879A (en) * 1936-12-18 1940-08-27 Gen Electric Electric discharge lamp
GB493831A (en) * 1937-06-04 1938-10-14 Philips Nv Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube
US2265396A (en) * 1937-09-18 1941-12-09 Gen Electric Gaseous electric discharge device
US2277876A (en) * 1938-11-09 1942-03-31 Michel E Macksoud Electric lamp
US2275768A (en) * 1939-06-17 1942-03-10 Gen Electric Electric lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110833A (en) * 1961-02-21 1963-11-12 Westinghouse Electric Corp Multiple envelope high pressure mercury vapor discharge lamp
WO2002029851A1 (en) * 2000-10-04 2002-04-11 Theodore Mcbain Independent dual-function light bulb

Also Published As

Publication number Publication date
BE501021A (pt)
CH303446A (de) 1954-11-30
NL158929B (nl)
FR1035657A (fr) 1953-08-27

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