GB1184565A - Illuminated Sign. - Google Patents

Illuminated Sign.

Info

Publication number
GB1184565A
GB1184565A GB04594/67A GB1459467A GB1184565A GB 1184565 A GB1184565 A GB 1184565A GB 04594/67 A GB04594/67 A GB 04594/67A GB 1459467 A GB1459467 A GB 1459467A GB 1184565 A GB1184565 A GB 1184565A
Authority
GB
United Kingdom
Prior art keywords
lens
lenses
legend
lamps
march
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
GB04594/67A
Inventor
George Edward Pentney
Anthony Howard Yapp
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB04594/67A priority Critical patent/GB1184565A/en
Publication of GB1184565A publication Critical patent/GB1184565A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • 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
    • 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
    • F21Y2113/00—Combination of light sources

Abstract

1,184,565. Rear illuminated signs. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 March, 1968 [30 March, 1967], No. 14594/67. Heading G5C. [Also in Division G2] A sign has a housing 51, a Fresnel lens 54 consisting of an inner circular prismatic lens and an outer annular prismatic lens, a tungsten filament lamp 52 located at the focal point of the inner lens and a toroidal shaped fluorescent lamp 53 located in the focal circle of the annular lens and a legend bearing sheet 56 located between the lenses and the lamps. The focal lengths of the lenses preferably lies between ¢ to ¥ of the diameter of the inner circular lens. The lenses are made of polymethyl methacrylate either by machining a flat sheet or by moulding using a flat sheet or moulding powder. The legend bearing sheet is made of a black material so that the legend is only visible when the lamps are lit.
GB04594/67A 1967-03-30 1967-03-30 Illuminated Sign. Expired GB1184565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB04594/67A GB1184565A (en) 1967-03-30 1967-03-30 Illuminated Sign.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB04594/67A GB1184565A (en) 1967-03-30 1967-03-30 Illuminated Sign.

Publications (1)

Publication Number Publication Date
GB1184565A true GB1184565A (en) 1970-03-18

Family

ID=10044053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB04594/67A Expired GB1184565A (en) 1967-03-30 1967-03-30 Illuminated Sign.

Country Status (1)

Country Link
GB (1) GB1184565A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015121337A1 (en) * 2014-02-12 2015-08-20 Koninklijke Philips N.V. Lighting device and luminaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015121337A1 (en) * 2014-02-12 2015-08-20 Koninklijke Philips N.V. Lighting device and luminaire
US9810403B2 (en) 2014-02-12 2017-11-07 Philips Lighting Holding B.V. Lighting device and luminaire

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees