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GB543390A - Improvements in lighting units - Google Patents

Improvements in lighting units

Info

Publication number
GB543390A
GB543390A GB10379/40A GB1037940A GB543390A GB 543390 A GB543390 A GB 543390A GB 10379/40 A GB10379/40 A GB 10379/40A GB 1037940 A GB1037940 A GB 1037940A GB 543390 A GB543390 A GB 543390A
Authority
GB
United Kingdom
Prior art keywords
light
reflectors
frame
downwards
lighting units
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
GB10379/40A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB543390A publication Critical patent/GB543390A/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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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
    • F21W2131/20—Lighting for medical use
    • F21W2131/202—Lighting for medical use for dentistry
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

543,390. Lighting fittings. PIEPER, A. F. June 14, 1940, No. 10379. Convention date, July 14, 1939. [Classes 75 (ii) and 75 (iv)] A lighting unit adapted for use in a dental surgery comprises a frame 11 containing a number of linear light-sources 24, 26 provided with reflectors 27, 28, some of which direct the light downwards and others upwards, so that it is reflected downwards from the ceiling and walls of the room. The light is emitted through lower and upper plates 22, 23 of diffusing glass. The frame 11 is suspended by a bail 12 from a support 13. The reflectors may be slotted, so as to allow light to pass through. them and to reinforce the light thrown by the oppositelyfacing reflectors.
GB10379/40A 1939-07-14 1940-06-14 Improvements in lighting units Expired GB543390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US543390XA 1939-07-14 1939-07-14

Publications (1)

Publication Number Publication Date
GB543390A true GB543390A (en) 1942-02-24

Family

ID=21990373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10379/40A Expired GB543390A (en) 1939-07-14 1940-06-14 Improvements in lighting units

Country Status (1)

Country Link
GB (1) GB543390A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1678441A4 (en) * 2003-10-02 2009-11-25 Ruud Lighting Inc Linear fluorescent high-bay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1678441A4 (en) * 2003-10-02 2009-11-25 Ruud Lighting Inc Linear fluorescent high-bay

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