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GB668785A - Improvements in electric lighting fittings - Google Patents

Improvements in electric lighting fittings

Info

Publication number
GB668785A
GB668785A GB4811/50A GB481150A GB668785A GB 668785 A GB668785 A GB 668785A GB 4811/50 A GB4811/50 A GB 4811/50A GB 481150 A GB481150 A GB 481150A GB 668785 A GB668785 A GB 668785A
Authority
GB
United Kingdom
Prior art keywords
lamps
incandescent
reflectors
fluorescent lamps
feb
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
Application number
GB4811/50A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB668785A publication Critical patent/GB668785A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

668,785. Lighting fittings. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 24, 1950 [Feb. 28, 1949], No. 4811/50. Class 75 (iv) In an electric lighting fitting having both incandescent lamps 8 and tubular fluorescent lamps 4, the incandescent lamps are arranged in meridionally-corrugated cupshaped reflectors 9 and are provided with shielding means on the sides remote from the reflectors. The shielding means may comprise mirrors 10 on the bottoms of the lamps or diffusing layers on the lamps and/ or screens or reflectors secured to the fitting itself. The lamps are mounted in a support 1 suspended by rods 2 with an incandescent lamp arranged at each end of each pair of fluorescent lamps. A grating 5 consisting of vertical strips arranged in rhomb pattern shields the fluorescent lamps. The incandescent lamps may serve as ballast resistors for the fluorescent lamps.
GB4811/50A 1949-02-28 1950-02-24 Improvements in electric lighting fittings Expired GB668785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL283232X 1949-02-28

Publications (1)

Publication Number Publication Date
GB668785A true GB668785A (en) 1952-03-19

Family

ID=19782381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4811/50A Expired GB668785A (en) 1949-02-28 1950-02-24 Improvements in electric lighting fittings

Country Status (5)

Country Link
BE (1) BE494174A (en)
CH (1) CH283232A (en)
DE (1) DE807533C (en)
FR (1) FR1013298A (en)
GB (1) GB668785A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039848B (en) * 1953-04-22 1958-09-25 Licentia Gmbh Circular light for securing the approach of fast aircraft
DE102008015728A1 (en) * 2008-03-26 2009-10-01 Zumtobel Lighting Gmbh Luminaire with a lamp column extending upwards from a lamp stand

Also Published As

Publication number Publication date
BE494174A (en) 1950-08-28
CH283232A (en) 1952-05-31
FR1013298A (en) 1952-07-25
DE807533C (en) 1951-07-02

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