GB675965A - Improvements relating to fluorescent light fittings - Google Patents

Improvements relating to fluorescent light fittings

Info

Publication number
GB675965A
GB675965A GB10773/49A GB1077349A GB675965A GB 675965 A GB675965 A GB 675965A GB 10773/49 A GB10773/49 A GB 10773/49A GB 1077349 A GB1077349 A GB 1077349A GB 675965 A GB675965 A GB 675965A
Authority
GB
United Kingdom
Prior art keywords
base
tube
bent
tubing
reflector
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
GB10773/49A
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.)
Clarke Chapman Group Ltd
Original Assignee
Clarke Chapman and Co Ltd
Clarke Chapman Group 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 Clarke Chapman and Co Ltd, Clarke Chapman Group Ltd filed Critical Clarke Chapman and Co Ltd
Priority to GB10773/49A priority Critical patent/GB675965A/en
Publication of GB675965A publication Critical patent/GB675965A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

675,965. Fluorescent lamp fittings. CLARKE, CHAPMAN & CO., Ltd., THOMPSON, T., and POTTS, E. L. J. July 18, 1950 [April 22, 1949], No. 10773/49. Classes 75(ii) and 75(iv) In a lighting fitting using bent circularsection fluorescent tubing 29, with adjacent terminals 32, supported on a base 11 with a circular specular reflector 27 arranged between the base 11 and the tubing 29, the reflector has a radial section comprising an inner parabolic or concave portion 27a and an outer cycloidal portion 27b produced by a point within a circle of the same diameter as the circular section of the tubing. As shown the base 11 has two adjacent compartments 13, 14, one 13 opening upwardly and closable by a cover 16 and the other 14 opening downwardly and housing lamp sockets 33 to receive the upwardly bent ends of a circularly bent fluorescent tube 29. The chamber 13 houses the circuit equipment and terminals 23, the latter extending through to the underside of the base 11 whence they are connected via leads 34 with the sockets 33. A flame-proof cable gland provides for the entry of a supply cable to the chamber 13. The tube 29 is supported from the base 11 by spaced transparent hangers 30 secured to a rib 26, the latter supporting also the reflector 27. A glass or plastic bowl 35 is mounted in a ring 36 which is hinged to the base 11 and also screwed thereto to enclose the tube 29 in a flameproof manner. The tube 29 may comprise two or more bent sections.
GB10773/49A 1949-04-22 1949-04-22 Improvements relating to fluorescent light fittings Expired GB675965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10773/49A GB675965A (en) 1949-04-22 1949-04-22 Improvements relating to fluorescent light fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10773/49A GB675965A (en) 1949-04-22 1949-04-22 Improvements relating to fluorescent light fittings

Publications (1)

Publication Number Publication Date
GB675965A true GB675965A (en) 1952-07-16

Family

ID=9974002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10773/49A Expired GB675965A (en) 1949-04-22 1949-04-22 Improvements relating to fluorescent light fittings

Country Status (1)

Country Link
GB (1) GB675965A (en)

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