US1973385A - Television apparatus - Google Patents

Television apparatus Download PDF

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Publication number
US1973385A
US1973385A US632038A US63203832A US1973385A US 1973385 A US1973385 A US 1973385A US 632038 A US632038 A US 632038A US 63203832 A US63203832 A US 63203832A US 1973385 A US1973385 A US 1973385A
Authority
US
United States
Prior art keywords
casing
luminous tube
television apparatus
scanning disc
partition
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
US632038A
Other languages
English (en)
Inventor
Moller Rolf
Schubert Georg
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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
Application filed by Fernseh GmbH filed Critical Fernseh GmbH
Application granted granted Critical
Publication of US1973385A publication Critical patent/US1973385A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18144—Overcoming dead center

Definitions

  • This invention relates to television apparatus, and more particularly to an arrangement for the operation of light sources, which make use of a positive column, in conjunction with television receiving apparatus of the type employing a Nipkow disk.
  • Surface illuminating means operating with a positive column cannot, however, readily be employed for television purposes, as strata of light are formed in the luminous column of gas, or in other words the luminous column of gas readily tends to oscillate at a certain frequency.
  • Fig. l illustrates in diagrammatical form the method hitherto adopted for approaching the gaseous conduction lamp or surface illuminating :means towards'the Nipkow disk,
  • FIG. 2 showing insimilar form a possible arrangement according to ithe invention.
  • Fig. 1 there are shown theNipkow disk 1, the mask or shutter 2, and the surface illuminating means or gaseous conduction lamp 3.
  • Fig. 2 there are shown the Nipkow disk 1, the surface illuminating means, i. e., the source of light, and its heating chamber 2, and a wall or partition 3, which is interposed between the light source and the Nipkow disk.
  • This wall may consist of any desired material, and serves to withhold the current of air created by the disk from the heating chamber or casing in which the light source is located.
  • a piece of glass or other transparent l95 material 4 4. In this manner it is accomplished” that a one-sided cooling of the light source or surface illuminating means by reason of the current of air produced by the rotating disk is avoided.
  • this arrangement is unable to prevent the loss of heat by radiation as regards the heating chamber, and accordingly the source of light, from being greater on the side directed towards the glass than at the remaining points, as
  • the arrangement of the heating elements within the chamber or casing may be in the form asillustrated diagrammatically in Fig. 3.
  • l A ⁇ I In the latter 1 is the chamber or casing, 2 the heating elements, and 3 the light source tted'in the casing. As shown by the drawing, it is ensured by reason of the arrangement of the heating elements that exactlythe front face 4fis Acon tinuously washed by heated air.
  • a scanning disc a luminous tube of the positive column type, a casing in which said luminous tube is mounted, said casing being provided with an. aperture for the emission of light rays from said luminous tube, means adapted to keep' the air current produced Tby the rotation of said scanning disc away from .said casing and luminous tube, said .means including a frosted glass plate in front .of said luminous tube, the space between the luminous tube and scanning disc being free of any other equipment, and means for compensating the loss of 'heat caused by said air current.
  • a scanning disc a luminous tube of the positive column type, a casing 'having an Vapertured wall in which said luminous tube vis .mounted directly behind said wall, a partition between said scanning disc and the apertured Wall of said casing, a window of heat resisting material in said partition, said partition .being adapted 'to keep air currents produced by. the rotation of said scanning disc away 'A from .said casing, and .means for compensating the 'loss' of 'heat caused by .said air currents.
  • a scanning disc In a television apparatus, a scanning disc, a luminous tube of the positive column type, a
  • a scanning disc with a 'luminous tube ofthe positive column type, a Vcasing having an aper-4 tured Wall in'which said luminous tube is mount-j ed directly behind usaid Wall, a partition between said scanningdisc and directly in iront of the apertured wall of said casing, said partition covering the entireone side ofthe scanning disc and being provided ⁇ in front of saidapertured wall With a window "plate of heat resisting material, and heating elements within said casi-ng land located adjacent the front of said luminous tube.
  • a scanning discwith va luminous tube of 'the positive column type a stationary partition directly adjacent lone side of said ⁇ scanning disc and coveringthe entire surface-of the'sa-me, said partition 'beingprovided with an opening, said yluminous tube 'being arranged directly behind fthe opening insaid partition-said partition being adapted tov prevent the coo-lingV of said luminous tube -by the air current yproduced during the ⁇ rotation of said scanning disc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US632038A 1931-09-12 1932-09-07 Television apparatus Expired - Lifetime US1973385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE384965X 1931-09-12

Publications (1)

Publication Number Publication Date
US1973385A true US1973385A (en) 1934-09-11

Family

ID=6370734

Family Applications (1)

Application Number Title Priority Date Filing Date
US632038A Expired - Lifetime US1973385A (en) 1931-09-12 1932-09-07 Television apparatus

Country Status (3)

Country Link
US (1) US1973385A (enrdf_load_stackoverflow)
FR (1) FR741660A (enrdf_load_stackoverflow)
GB (1) GB384965A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR741660A (enrdf_load_stackoverflow) 1933-02-17
GB384965A (en) 1932-12-15

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