GB540898A - Improvements in fluorescent lighting fittings - Google Patents

Improvements in fluorescent lighting fittings

Info

Publication number
GB540898A
GB540898A GB7979/40A GB797940A GB540898A GB 540898 A GB540898 A GB 540898A GB 7979/40 A GB7979/40 A GB 7979/40A GB 797940 A GB797940 A GB 797940A GB 540898 A GB540898 A GB 540898A
Authority
GB
United Kingdom
Prior art keywords
casing
screen
luminescent
opaque
wall
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
GB7979/40A
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.)
Benjamin Electric Ltd
Original Assignee
Benjamin Electric 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 Benjamin Electric Ltd filed Critical Benjamin Electric Ltd
Priority to GB7979/40A priority Critical patent/GB540898A/en
Publication of GB540898A publication Critical patent/GB540898A/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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material

Abstract

540,898. Lighting fittings. SKINNER, G. D. and BENJAMIN ELECTRIC, Ltd. May 3, 1940, No. 7979. [Classes 75 (ii) and 75 (iv)] A fluorescent lighting fitting comprises a tubular electric discharge lamp 1 removably mounted in an elongated trough-like casing or reflector 4 with its axis parallel to the length of the casing, the open side of the casing being closed in by a translucent luminescent wall or screen 2. The screen 2 may have a luminescent coating applied to its inner wall or may be made of glass having luminescent material incorporated while in a plastic or molten condition. The outer surface of the screen may be formed with prisms. The lamp 1 may be cooled by filtered air circulated through the casing 4, the air being then delivered into the room in a sterilized condition. The Provisional Specification states that opaque or semi-opaque louvres may project at right angles below the luminescent screen.
GB7979/40A 1940-05-03 1940-05-03 Improvements in fluorescent lighting fittings Expired GB540898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7979/40A GB540898A (en) 1940-05-03 1940-05-03 Improvements in fluorescent lighting fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7979/40A GB540898A (en) 1940-05-03 1940-05-03 Improvements in fluorescent lighting fittings

Publications (1)

Publication Number Publication Date
GB540898A true GB540898A (en) 1941-11-04

Family

ID=9843429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7979/40A Expired GB540898A (en) 1940-05-03 1940-05-03 Improvements in fluorescent lighting fittings

Country Status (1)

Country Link
GB (1) GB540898A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525315A (en) * 1945-10-20 1950-10-10 Safety Car Heating & Lighting Lighting fixture
DE952918C (en) * 1953-12-29 1956-11-22 Helmut Naumann Dr Ing Luminaire for light sources of great length but with a small diameter, preferably for flashlight discharge lamps
DE2934140A1 (en) * 1979-08-23 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Variable output high intensity light source - uses reflectively coated fluorescent collectors connected to light guides terminating at concentration point
EP0592794A2 (en) * 1992-08-26 1994-04-20 Imab-Stiftung Apparatus for generating and emitting electromagnetic radiation
EP2224163A1 (en) * 2009-02-27 2010-09-01 Reddy Solutions Lighting arrangement for light conversion and spreading

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525315A (en) * 1945-10-20 1950-10-10 Safety Car Heating & Lighting Lighting fixture
DE952918C (en) * 1953-12-29 1956-11-22 Helmut Naumann Dr Ing Luminaire for light sources of great length but with a small diameter, preferably for flashlight discharge lamps
DE2934140A1 (en) * 1979-08-23 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Variable output high intensity light source - uses reflectively coated fluorescent collectors connected to light guides terminating at concentration point
EP0592794A2 (en) * 1992-08-26 1994-04-20 Imab-Stiftung Apparatus for generating and emitting electromagnetic radiation
EP0592794A3 (en) * 1992-08-26 1994-06-01 Imab Stiftung Apparatus for generating and emitting electromagnetic radiation
EP2224163A1 (en) * 2009-02-27 2010-09-01 Reddy Solutions Lighting arrangement for light conversion and spreading

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