GB609631A - Improvements relating to decorative lighting devices - Google Patents

Improvements relating to decorative lighting devices

Info

Publication number
GB609631A
GB609631A GB8500/46A GB850046A GB609631A GB 609631 A GB609631 A GB 609631A GB 8500/46 A GB8500/46 A GB 8500/46A GB 850046 A GB850046 A GB 850046A GB 609631 A GB609631 A GB 609631A
Authority
GB
United Kingdom
Prior art keywords
colour
light source
filter
light
light emitted
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
GB8500/46A
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.)
JAMES CARSTAIRS LOWSON
ROBERT VICTOR MILLS
British Thomson Houston Co Ltd
Original Assignee
JAMES CARSTAIRS LOWSON
ROBERT VICTOR MILLS
British Thomson Houston Co 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 JAMES CARSTAIRS LOWSON, ROBERT VICTOR MILLS, British Thomson Houston Co Ltd filed Critical JAMES CARSTAIRS LOWSON
Priority to GB8500/46A priority Critical patent/GB609631A/en
Publication of GB609631A publication Critical patent/GB609631A/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
    • F21S6/00—Lighting devices intended to be free-standing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • 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
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

609,631. Colour lighting. BRITISH THOMSON-HOUSTON CO., Ltd., LOWSON, J. C., and MILLS, R. V. March 19, 1946. No. 8500. [Class 75(iv)] [Also in Groups XVIII and XX] An elongated light source 1 covered by alternate band 3, 4 of opaque and transparent material reciprocates within a tubular filter 2 comprising sequences of differently coloured bands B, G, R, the whole being surrounded by a diffusion tube (not shown). The light source 1 is reciproated by an electric motor and each transparent band 4 scans one colour sequence, B, G, R, so that the colour of the light emitted changes continuously. A cylindrical shutter device comprising overlapping adjustable shutter segments may surround the filter 2 to enable the amount of light emitted to be regulated. Arched strips of felt 6 to facilitate the reciprocating movement and annular pads 8 of black friction tape preventing the escape of light at oblique angles, are secured to the light source 1. In a modification, the light source is in the form of an annular shaped tubular envelope and the filter, of similar shape, is rotated or oscillated to effect the change of colour.
GB8500/46A 1946-03-19 1946-03-19 Improvements relating to decorative lighting devices Expired GB609631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8500/46A GB609631A (en) 1946-03-19 1946-03-19 Improvements relating to decorative lighting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8500/46A GB609631A (en) 1946-03-19 1946-03-19 Improvements relating to decorative lighting devices

Publications (1)

Publication Number Publication Date
GB609631A true GB609631A (en) 1948-10-05

Family

ID=9853655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8500/46A Expired GB609631A (en) 1946-03-19 1946-03-19 Improvements relating to decorative lighting devices

Country Status (1)

Country Link
GB (1) GB609631A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348433A1 (en) * 1976-04-14 1977-11-10 Vedres Laurent Variable luminance luminescent lamp - has small diameter tube and dark and light patterned sleeves to vary light intensity
EP0414580A1 (en) * 1989-08-25 1991-02-27 Iskra Industry Co., Ltd. Lighting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348433A1 (en) * 1976-04-14 1977-11-10 Vedres Laurent Variable luminance luminescent lamp - has small diameter tube and dark and light patterned sleeves to vary light intensity
EP0414580A1 (en) * 1989-08-25 1991-02-27 Iskra Industry Co., Ltd. Lighting apparatus

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