DE1955421A1 - Beleuchtungslampe - Google Patents

Beleuchtungslampe

Info

Publication number
DE1955421A1
DE1955421A1 DE19691955421 DE1955421A DE1955421A1 DE 1955421 A1 DE1955421 A1 DE 1955421A1 DE 19691955421 DE19691955421 DE 19691955421 DE 1955421 A DE1955421 A DE 1955421A DE 1955421 A1 DE1955421 A1 DE 1955421A1
Authority
DE
Germany
Prior art keywords
segment
angle
filament
light
light source
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.)
Pending
Application number
DE19691955421
Other languages
German (de)
English (en)
Inventor
Tetsuhiro Kano
Naoyoshi Nameda
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
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 claimed from JP1968097517U external-priority patent/JPS472552Y1/ja
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of DE1955421A1 publication Critical patent/DE1955421A1/de
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
DE19691955421 1968-11-04 1969-11-04 Beleuchtungslampe Pending DE1955421A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8025268 1968-11-04
JP1968097517U JPS472552Y1 (enrdf_load_stackoverflow) 1968-11-11 1968-11-11

Publications (1)

Publication Number Publication Date
DE1955421A1 true DE1955421A1 (de) 1970-07-16

Family

ID=26421290

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691955421 Pending DE1955421A1 (de) 1968-11-04 1969-11-04 Beleuchtungslampe

Country Status (3)

Country Link
US (1) US3652892A (enrdf_load_stackoverflow)
DE (1) DE1955421A1 (enrdf_load_stackoverflow)
FR (1) FR222560A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656386A (en) * 1985-03-13 1987-04-07 General Electric Company R lamp having an improved dome portion for increasing the useful light output
USD321404S (en) 1990-03-29 1991-11-05 Falburg Films Corporation Light bulb
WO2011030335A2 (en) 2009-09-10 2011-03-17 Yosef Shterenberg Light bulbs with surface patterns
EP3678160A1 (en) * 2018-10-19 2020-07-08 Duraluce di Coianiz Fabio Lamp with shielding in form of text or graphical symbols

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR421040A (fr) * 1909-10-04 1911-02-13 Ernest Leon Frenot Réflecteur pour ampoules électriques
GB425485A (en) * 1933-09-15 1935-03-15 Bertram Bernard Fenn Improvements in or relating to incandescent electric lamps
US2973451A (en) * 1959-09-03 1961-02-28 Westinghouse Electric Corp Electric lamp
GB1082841A (en) * 1964-08-14 1967-09-13 Gen Electric Co Ltd Improvements in or relating to electric lamps having vitreous silica envelopes

Also Published As

Publication number Publication date
FR222560A (enrdf_load_stackoverflow)
US3652892A (en) 1972-03-28

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Legal Events

Date Code Title Description
SH Request for examination between 03.10.1968 and 22.04.1971