GB713115A - Improvements in electric lanterns - Google Patents

Improvements in electric lanterns

Info

Publication number
GB713115A
GB713115A GB269/52A GB26952A GB713115A GB 713115 A GB713115 A GB 713115A GB 269/52 A GB269/52 A GB 269/52A GB 26952 A GB26952 A GB 26952A GB 713115 A GB713115 A GB 713115A
Authority
GB
United Kingdom
Prior art keywords
lantern
reflector
refractor
source
light
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
GB269/52A
Inventor
William Frederick Griffiths
John Guyscliffe Holmes
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.)
Crompton Parkinson Ltd
Holophane Ltd
Original Assignee
Crompton Parkinson Ltd
Holophane 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 Crompton Parkinson Ltd, Holophane Ltd filed Critical Crompton Parkinson Ltd
Priority to GB269/52A priority Critical patent/GB713115A/en
Publication of GB713115A publication Critical patent/GB713115A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

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

Abstract

713,115. Lanterns. CROMPTON PARKINSON, Ltd., and HOLOPHANE, Ltd. Dec. 4, 1952 [Jan. 3, 1952], No. 269/52. Class 75 (4) An electric lantern particularly for street lighting has an optical system disposed on one or both sides of a light source 1 and comprising an upper prismatic plate 4 refracting light in a downward direction and a lower reflector 5 directing light downwardly through the bottom of the lantern, the reflector lying not farther from the vertical axis through the source than the refractor. The refractor and reflector may be parallel or in a straight line as shown or at an angle to one another or they may form a continuous curve. The reflector may be made of silvered or prismatic glass or plastic or polished metal. The end portions of the reflector and/or refractor may have vertical or oblique prisms. The refractor and reflector are preferably made in a single piece and are covered by a transparent plate 7. A screen 10 is fitted above the refractor to cut-off light emerging above an angle near the horizontal. The top of the lantern consists of a cover plate 2 formed with a socket 3 for a support and the bottom of the lantern is either open or covered with clear or translucent material. One or more reflectors may be placed above the source. The lantern may be elongated, the ends being opaque or translucent and the source being elongated or the lantern may be circular or elliptical in plan. Specifications 523,288 and 567,568 are referred to.
GB269/52A 1952-01-03 1952-01-03 Improvements in electric lanterns Expired GB713115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB269/52A GB713115A (en) 1952-01-03 1952-01-03 Improvements in electric lanterns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB269/52A GB713115A (en) 1952-01-03 1952-01-03 Improvements in electric lanterns

Publications (1)

Publication Number Publication Date
GB713115A true GB713115A (en) 1954-08-04

Family

ID=9701379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB269/52A Expired GB713115A (en) 1952-01-03 1952-01-03 Improvements in electric lanterns

Country Status (1)

Country Link
GB (1) GB713115A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882389A (en) * 1954-06-30 1959-04-14 Philips Corp Lighting fitting for road illumination
EP1847763A1 (en) 2006-04-21 2007-10-24 Semperlux Aktiengesellschaft, Lichttechnische Werke Multilateral illumination device with glare reduction
DE202007011211U1 (en) * 2007-08-10 2008-12-24 Zumtobel Lighting Gmbh lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882389A (en) * 1954-06-30 1959-04-14 Philips Corp Lighting fitting for road illumination
EP1847763A1 (en) 2006-04-21 2007-10-24 Semperlux Aktiengesellschaft, Lichttechnische Werke Multilateral illumination device with glare reduction
US7572034B2 (en) 2006-04-21 2009-08-11 Semperlux Aktiengesellschaft Multiple side illumination assembly
DE202007011211U1 (en) * 2007-08-10 2008-12-24 Zumtobel Lighting Gmbh lamp

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