GB2103778A - A double grid for fluorescent lamp units - Google Patents

A double grid for fluorescent lamp units

Info

Publication number
GB2103778A
GB2103778A GB08221795A GB8221795A GB2103778A GB 2103778 A GB2103778 A GB 2103778A GB 08221795 A GB08221795 A GB 08221795A GB 8221795 A GB8221795 A GB 8221795A GB 2103778 A GB2103778 A GB 2103778A
Authority
GB
United Kingdom
Prior art keywords
grid
members
walls
light
shielding
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.)
Granted
Application number
GB08221795A
Other versions
GB2103778B (en
Inventor
Sven-Aage Willumsen
Steen Willumsen
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
Priority claimed from DK515880A external-priority patent/DK155760C/en
Priority claimed from DK157181A external-priority patent/DK156847C/en
Application filed by Individual filed Critical Individual
Publication of GB2103778A publication Critical patent/GB2103778A/en
Application granted granted Critical
Publication of GB2103778B publication Critical patent/GB2103778B/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
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Grates (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The grid comprises a plurality of light passages (3) surrounded by walls (4, 5, 6, 7) of an appropriate height and located at a mutual, appropriate distance permitting light from a light source (9) to flow through said light passages. The grid comprises at least two independent plane parallel grid members (1, 2) located closely to each other or at a predetermined mutual distance. By means of retaining means (8), e.g. short, snap-lock-like connections, the grid members may be secured to each other. The grid members may be of the same or different type in such a manner that both for instance may be shielding grids, or one grid member may be a shielding grid whereas the other, preferably the lower grid member may be a mirrored low luminance grid. By manufacturing the grid of two mutually spaced grid members, it is possible to place the walls (4, 5, 6, 7) at a greater mutual distance than previously, which ensures a material saving while maintaining the shielding angle usually aimed at. Such a construction furthermore ensures that the thickness of the walls may be reduced compared to known grids, which involves an additional material saving. The total weight of the grid is thereby essentially reduced. Furthermore, new light effects are permitted by providing the grid members with different colours.
GB08221795A 1980-12-03 1981-12-02 A double grid for fluorescent lamp units Expired GB2103778B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK515880A DK155760C (en) 1980-12-03 1980-12-03 COMBINATION GRID FOR LIGHTING FITTINGS
DK157181A DK156847C (en) 1981-04-07 1981-04-07 LIGHTING FOR LIGHTING LIGHT

Publications (2)

Publication Number Publication Date
GB2103778A true GB2103778A (en) 1983-02-23
GB2103778B GB2103778B (en) 1984-09-26

Family

ID=26065912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08221795A Expired GB2103778B (en) 1980-12-03 1981-12-02 A double grid for fluorescent lamp units

Country Status (6)

Country Link
EP (1) EP0065968A1 (en)
FI (1) FI69353C (en)
GB (1) GB2103778B (en)
NL (1) NL8120461A (en)
SE (1) SE451091B (en)
WO (1) WO1982001930A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK173787A (en) * 1987-04-06 1988-10-07 Willumsen Sven A Hybridomas which produce a receptor which immunoreacts with thrombospondin, such receptors, a diagnostic, site- specific, image-formation reagent comprising such receptors, an in-vitro method for detecting and differentiating between stimulated
DE102005003898A1 (en) † 2005-01-27 2006-08-03 Wacker Chemie Ag Continuous process for the preparation of SiOC-containing compounds
CN101326402B (en) 2005-12-07 2010-06-02 皇家飞利浦电子股份有限公司 A lighting module

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506951A (en) * 1945-11-05 1950-05-09 Leroy C Doane Foraminous sheet material and luminaire made therefrom
US2904673A (en) * 1957-02-13 1959-09-15 Sr Edwin F Guth Light diffusors for illuminating devices
FR1195541A (en) * 1958-05-02 1959-11-18 Improvements to screen devices
US2996609A (en) * 1958-07-07 1961-08-15 Wilson Bertram Arnold Sheet panel
US2971083A (en) * 1958-11-14 1961-02-07 Gen Electric Low brightness louver
US3024355A (en) * 1959-12-07 1962-03-06 Willis L Lipscomb Curved, cellular light control panel
US3413460A (en) * 1964-12-28 1968-11-26 Sjolander Karl Lennart Ingemar Optical anti-dazzling device
FR1482572A (en) * 1966-05-26 1967-05-26 Improvements to electrical lighting devices for experimental enclosures

Also Published As

Publication number Publication date
WO1982001930A1 (en) 1982-06-10
FI69353B (en) 1985-09-30
EP0065968A1 (en) 1982-12-08
GB2103778B (en) 1984-09-26
NL8120461A (en) 1982-10-01
SE451091B (en) 1987-08-31
SE8204544L (en) 1982-08-02
FI822660L (en) 1982-07-30
FI822660A0 (en) 1982-07-30
SE8204544D0 (en) 1982-08-02
FI69353C (en) 1986-01-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee