GB718650A - Improvements in or relating to light diffusers for tubular lamps - Google Patents

Improvements in or relating to light diffusers for tubular lamps

Info

Publication number
GB718650A
GB718650A GB15677/52A GB1567752A GB718650A GB 718650 A GB718650 A GB 718650A GB 15677/52 A GB15677/52 A GB 15677/52A GB 1567752 A GB1567752 A GB 1567752A GB 718650 A GB718650 A GB 718650A
Authority
GB
United Kingdom
Prior art keywords
elements
signs
interfitting
support
upper edges
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
GB15677/52A
Inventor
Jacques Seidenberg
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.)
SEIDENBERG FRERES
Original Assignee
SEIDENBERG FRERES
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 SEIDENBERG FRERES filed Critical SEIDENBERG FRERES
Priority to GB15677/52A priority Critical patent/GB718650A/en
Publication of GB718650A publication Critical patent/GB718650A/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
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

718,650. Signs. SEIDENBERG FRERES. June 20, 1952. No. 15677/52. Class 3(2) [Also in Group XI] Light transmitting plates bearing advertising inscriptions (signs, letters, numbers and the like) are detachably retained in trough-shaped elements of moulded transparent or translucent plastic assembled end to end, each element having a rectangular downwardly bulging base, side walls 2, 3 formed as multiple facet prisms 4 and having grooved upper edges 11, and end walls formed with lugs 6, 7 to clip over a tubular lamp and thereby support the element. As shown, the periphery of the element base 1 is provided with side flanges 8 and lugged corner pieces 9 to support a detachable plastic plate 10 which may be white or coloured. The grooved upper edges 11 provide for side by side assembly of similar elements as in Fig. 4, the interfitting edges 11 being cemented toegther. To provide for interfitting of the elements of an end to end assemblage, each element may have wedge or other shaped projections moulded on one end wall, correspondingly shaped apertures being provided in the other end wall.
GB15677/52A 1952-06-20 1952-06-20 Improvements in or relating to light diffusers for tubular lamps Expired GB718650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB15677/52A GB718650A (en) 1952-06-20 1952-06-20 Improvements in or relating to light diffusers for tubular lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15677/52A GB718650A (en) 1952-06-20 1952-06-20 Improvements in or relating to light diffusers for tubular lamps

Publications (1)

Publication Number Publication Date
GB718650A true GB718650A (en) 1954-11-17

Family

ID=10063434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15677/52A Expired GB718650A (en) 1952-06-20 1952-06-20 Improvements in or relating to light diffusers for tubular lamps

Country Status (1)

Country Link
GB (1) GB718650A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891737A (en) * 1988-12-09 1990-01-02 Thin-Lite Corporation Quick fit diffuser lens apparatus
EP2711614A3 (en) * 2012-09-21 2014-05-07 Toshiba Lighting & Technology Corporation Luminaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891737A (en) * 1988-12-09 1990-01-02 Thin-Lite Corporation Quick fit diffuser lens apparatus
EP2711614A3 (en) * 2012-09-21 2014-05-07 Toshiba Lighting & Technology Corporation Luminaire

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