GB965940A - Improvements in or relating to lighting devices - Google Patents

Improvements in or relating to lighting devices

Info

Publication number
GB965940A
GB965940A GB3416/62A GB341662A GB965940A GB 965940 A GB965940 A GB 965940A GB 3416/62 A GB3416/62 A GB 3416/62A GB 341662 A GB341662 A GB 341662A GB 965940 A GB965940 A GB 965940A
Authority
GB
United Kingdom
Prior art keywords
source
shutters
blades
light source
aperture
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
GB3416/62A
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.)
ANCIENS TUZET Ets
Original Assignee
ANCIENS TUZET Ets
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 ANCIENS TUZET Ets filed Critical ANCIENS TUZET Ets
Publication of GB965940A publication Critical patent/GB965940A/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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
    • 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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

965,940. Lighting devices. ANCIENS ETABLISSEMENTS TUZET, and J. WETZEL. Jan. 30, 1962 [Feb. 3, 1961], No. 3416/62. Heading F4R. A lighting device in which the intensity of the emitted light can be gradually increased or decreased comprises a fixed substantially rectilinear light source, shutters disposed in front of the source which by moving in a direction parallel thereto uncover an aperture of adjustable width and reflecting means receiving the rays from the source and dispersing them throughout the illuminated surface irrespective of the width of the aperture. In the form shown, a lamp 2 having a long axial filament is disposed in a casing on front of a cylindrical reflector 5, a series of reflecting blades 4 being arranged in front of the lamp. A pair of shutters 6a, 6b are arranged between the source 2 and the blades 4 being moved symmetrically towards or away from one another by nuts engaging oppositely-threaded screws 8a, 8b which may form part of a single shaft. The screws are driven by a motor 9 through reduction gearing 10. The motor may also drive a fan 14 for cooling the light source. In a modification, the blades are arranged between the shutters and the light source.
GB3416/62A 1961-02-03 1962-01-30 Improvements in or relating to lighting devices Expired GB965940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR851582A FR1287572A (en) 1961-02-03 1961-02-03 Lighting device allowing the gradation of the light emitted

Publications (1)

Publication Number Publication Date
GB965940A true GB965940A (en) 1964-08-06

Family

ID=8748056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3416/62A Expired GB965940A (en) 1961-02-03 1962-01-30 Improvements in or relating to lighting devices

Country Status (5)

Country Link
US (1) US3152766A (en)
BE (1) BE612976A (en)
FR (1) FR1287572A (en)
GB (1) GB965940A (en)
LU (1) LU41144A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8608337B2 (en) * 2010-02-18 2013-12-17 Koninklijke Philips N.V. Lighting fixture having a louvered light shield

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490676A (en) * 1923-09-07 1924-04-15 Miller William Automatic headlight control
US1810604A (en) * 1924-02-28 1931-06-16 Gen Electric Light projector
US2065164A (en) * 1932-06-16 1936-12-22 Wetzel Joseph Nondazzling projector
US2305818A (en) * 1938-10-18 1942-12-22 Tura Paolo Antiglare device
US2502880A (en) * 1947-07-11 1950-04-04 William P Olinger Combined fog lamp and head lamp
US2617918A (en) * 1948-10-18 1952-11-11 William A Foster Fluorescent lamp shade structure

Also Published As

Publication number Publication date
LU41144A1 (en) 1962-03-24
FR1287572A (en) 1962-03-16
US3152766A (en) 1964-10-13
BE612976A (en) 1962-05-16

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