EP0395171A1 - Armature d'éclairage - Google Patents

Armature d'éclairage Download PDF

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Publication number
EP0395171A1
EP0395171A1 EP90201033A EP90201033A EP0395171A1 EP 0395171 A1 EP0395171 A1 EP 0395171A1 EP 90201033 A EP90201033 A EP 90201033A EP 90201033 A EP90201033 A EP 90201033A EP 0395171 A1 EP0395171 A1 EP 0395171A1
Authority
EP
European Patent Office
Prior art keywords
bottom plate
lighting fixture
lighting
intermediate part
pair
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
EP90201033A
Other languages
German (de)
English (en)
Other versions
EP0395171B1 (fr
Inventor
Simon Cornelis Van Putten
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 EP0395171A1 publication Critical patent/EP0395171A1/fr
Application granted granted Critical
Publication of EP0395171B1 publication Critical patent/EP0395171B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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

Definitions

  • the invention relates to a lighting fixture, comprising a box-­shaped housing having a rectangular bottom plate and a first and a second pair of parallel side plates connected with the bottom plate, said side plates defining a rectangular lighting opening, at least one lamp holder, which can be mounted on at least one position at the inside of at least one of said side plates of the first pair, for a substantially elongated light source, and two side reflectors accommodated between a respective side plate of the second pair and the bottom plate, and more in parti­cular the invention relates to such a lighting fixture wherein the bottom plate is provided with two end parts, whose sides opposite the sides connected with a respective side plate of the second pair along first connecting lines are located on second connecting lines, which are parallel to the side plates of the second pair and which are located at a smaller distance from the lighting opening than the first connecting lines, and with an intermediate part, of which opposite sides are respectively located on the second connecting lines, as well as to a method of producing such lighting fixtures.
  • Lighting fixtures of the above kind are known.
  • a separate top reflector is secured to the bottom plate on a position which corresponds with the location of the elongated light source. More in particular the top reflector is secured, for example with pop rivets, to the surface of the intermediate part of the bottom plate directed towards the lighting opening.
  • the intermediate part is flat and lies parallel to the lighting opening.
  • Each end part of the bottom plate consists of a flat part which is parallel to the lighting opening, but is located at a larger distance therefrom than the intermediate part, and of a flat connecting part which connects the flat part of the end part to the intermediate part.
  • the lowering in the bottom plate formed by said connecting parts of the end parts and the intermediate part is on the one hand used for reinforcing the bottom plate and on the other hand for preventing any resonance of the bottom plate if a ballast is mounted thereon, in particular on the flat part of one of the end parts of the bottom plate. Said lowering is moreover used for mounting the side reflectors and the top reflector, the latter to the intermediate part thereof.
  • a top reflector is a relatively expensive part of a lighting fixture, but on the other hand it is very desirable for accurately directing the light and converting the light flow from the rear side of the lamp into useful light.
  • the object of the invention is to provide a lighting fixture in which no separate top reflector is used, but wherein the advantages thereof are still substantially achieved.
  • the invention provides a ligting fixture of the kind mentioned first in the preamble, which is characterized in that a part of the bottom plate associated with the location of the elongated light source is formed in the shape of a top reflector, as well as in a lighting fixture of the kind mentioned secondly in the preamble, which is characterized in that the intermediate part is shaped in such a manner that from the second connecting lines to a sectional line of the intermediate part parallel to said second con­necting lines the distance from the surface of the intermediate part directed towards the lighting opening to the lighting opening becomes larger along at least a first part of the path defined by a respective second connecting line and said sectional line.
  • the profiling of the intermediate part is dependent on the width and the depth of the lighting fixture, the connection and the shape of the side reflectors and the further lighting demands, which in their turn may depend on the available mounting depth in the assembly, the height of the light-point, the mutual distance of lighting fixtures and the distance between the lighting fixture and for example a window. Furthermore an efficient use of the light source and an enhanced fixture and lighting efficiency can be achieved without a relatively expensive top reflector being necessary.
  • a method of producing the lighting fixture of the kind mentioned first is characterized in that the shape of the top reflector is formed in the bottom plate by means of a stamp.
  • a method of producing a lighting fixture of the kind mentioned secondly is characterized in that the bottom plate is configured by means of a stamp.
  • reference numeral 1 indicates a box-­shaped housing of a lighting fixture half according to a first embodi­ment of the invention diagrammatically illustrated in cross-section.
  • Said box-shaped housing 1 has a rectangular bottom plate 2, a first pair of side plates parallel to each other and to the sheet on which Figure 1 is drawn, one.of said side plates being designated by reference numeral 3, and a second pair of parallel side plates, whereby one of said side plates is designated by reference numeral 4, said four side plates 3, 3; 4, 4 being connected with the bottom plate 2 and defining a rectangular lighting opening 5.
  • Each side plate 4 of the second pair is connected, along a first connecting line 6, with an end part 21 of the bottom plate 2, which is furthermore provided with an intermediate part 22.
  • the end part 21 again consists of a flat part 210 and a flat connecting part 211, which connects the flat part 210 of the end part 21 to the intermediate part 22.
  • the connecting part 211 of the end part 21 is drawn obliquely in Figure 1, but it may also be parallel to the side plate 4.
  • the intermediate part 22 may also be connected with the side plate 4 only by a connecting part 211 along the first connecting line 6. In that case the connecting part 211 may be flat, but it may also be curved.
  • Reference numeral 8 indicates a chain-dotted line representing the intermediate part according to prior art.
  • Reference numeral 9 finally indicates a fluorescent lamp as a substantially elongated light source
  • reference numeral 10 indicates the centre of the lighting fixture and reference numeral 11 indicates one of two side reflectors.
  • a lighting fixture comprises a box-shaped housing 1 having a rectangular bottom plate 2 and a first and a second pair of parallel side plates 3 and 4 respectively connected with the bottom plate 2, said side plates defining a rectangular lighting opening 5, a lamp holder (not shown), which can be mounted in at least one position at the inside of at least one of the side plates 3 of the first pair, for a substantially elongated light source 9, and two side reflectors 11 accommodated between a respective side plate 4 of the second pair and the bottom plate 2, the bottom plate 2 being provided with two end parts 210, whose sides located opposite the sides connected to a respective side plate 4 of the second pair along first connecting lines 6 are located on second connecting lines 7, which are parallel to the side plates 4 of the second pair and which are located at a smaller distance from the lighting opening 5 than the first connecting lines 6, and with an intermediate part 22, of which opposite sides are respectively located on the second connecting lines 7.
  • the intermediate part 22 is shaped such that from the second connecting lines 7 to a sectional line 12, parallel to said second connecting lines 7, only one point of said sectional line 12 being visible in Figure 1 of course, of the intermediate part 22 the distance from the surface 13 of the intermediate part 22 directed towards the lighting opening to the lighting opening 5 becomes larger along at least a first part 15 of the path 14 defined by a respective second connecting line 7 and the sectional line 12.
  • the distance from the surface 13 of the intermediate part to the lighting opening 5 becomes smaller along a second and last part 16, joining up with the first part 15, of the path 14.
  • the curvature in the intermediate part 22 caused by the varying distance from the surface 13 of the intermediate part to the lighting opening 5 is preferably symmetric with respect to the sectional line 12.
  • end parts 21 and the intermediate part 22 may be connected in different ways, which are obvious to a person skilled in this field of the art, they preferably form an integral part of the bottom plate 2.
  • the intermediate part 22 is punched in the bottom plate 2 in that case, or formed in another manner.
  • the end parts 21 may be punched in the bottom plate 2.
  • Ventilation holes are provided in the end parts 210.
  • the intermediate part 22, or top reflector may be formed in the bottom plate by means of a stamp.
  • the entire bottom plate may be configured by means of a stamp.
  • FIG 2 shows a second embodiment of the invention, wherein the same reference numerals are used as in Figure 1.
  • the lighting fixture shown in Figure 2 is moreover provided with a ballast 17 and a lamellae grate 18 having longitudinal lamellae 19 and transverse lamellae 20.
  • the centre of the lighting fixture is indicated by the chain line designated by reference numeral 10.
  • the longitudinal lamellae therefore take over part of the function of the side reflectors 11, as a result of which an extra degree of freedom for the curvature is obtained, whereby the curvature of the side reflector 11 and the transverse lamella 19 not shown in Figure 2 may be different from the side reflector 11 and the transverse lamella that are shown.
  • the ballast 17 has a predetermined hum distance from the side plate 4.
  • the lighting fixtures shown in Figures 1 and 2 may be surface mounted lighting fixtures, they may also be built-in lighting fixtures, however, as a result of which the free end configuration of the side plates of the housing 1 is different.
  • the height of the side plate 4 may for example be 97 mm and the total width of the lighting fixture may be 230 mm, which width is divided in two by the chain line 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Liquid Crystal Substances (AREA)
EP90201033A 1989-04-27 1990-04-25 Armature d'éclairage Expired - Lifetime EP0395171B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8901053 1989-04-27
NL8901053A NL8901053A (nl) 1989-04-27 1989-04-27 Verlichtingsarmatuur met in bodemplaat van bakvormige behuizing gevormde kopspiegel en werkwijze voor het vervaardigen ervan.

Publications (2)

Publication Number Publication Date
EP0395171A1 true EP0395171A1 (fr) 1990-10-31
EP0395171B1 EP0395171B1 (fr) 1994-12-07

Family

ID=19854556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201033A Expired - Lifetime EP0395171B1 (fr) 1989-04-27 1990-04-25 Armature d'éclairage

Country Status (4)

Country Link
EP (1) EP0395171B1 (fr)
AT (1) ATE115256T1 (fr)
DE (1) DE69014703T2 (fr)
NL (1) NL8901053A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925325A (en) * 1994-11-24 1999-07-20 Arplas Gesellschaft Fur Plasmatechnologie Mbh Plasma unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950380A (en) * 1932-07-09 1934-03-13 Arras George Lighting fixture
US2436635A (en) * 1944-02-24 1948-02-24 Doane Products Corp Luminaire
FR1437302A (fr) * 1965-06-24 1966-04-29 Minnesota Mining & Mfg Boîte à lumière
CH465714A (de) * 1967-09-07 1968-11-30 Siemens Ag Feuchtigkeitsgeschützte Leuchte mit Leuchtstofflampen
US4751626A (en) * 1987-05-28 1988-06-14 Columbia Lighting, Inc. Reflector system for a luminaire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950380A (en) * 1932-07-09 1934-03-13 Arras George Lighting fixture
US2436635A (en) * 1944-02-24 1948-02-24 Doane Products Corp Luminaire
FR1437302A (fr) * 1965-06-24 1966-04-29 Minnesota Mining & Mfg Boîte à lumière
CH465714A (de) * 1967-09-07 1968-11-30 Siemens Ag Feuchtigkeitsgeschützte Leuchte mit Leuchtstofflampen
US4751626A (en) * 1987-05-28 1988-06-14 Columbia Lighting, Inc. Reflector system for a luminaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5925325A (en) * 1994-11-24 1999-07-20 Arplas Gesellschaft Fur Plasmatechnologie Mbh Plasma unit

Also Published As

Publication number Publication date
EP0395171B1 (fr) 1994-12-07
ATE115256T1 (de) 1994-12-15
DE69014703T2 (de) 1995-04-27
NL8901053A (nl) 1990-11-16
DE69014703D1 (de) 1995-01-19

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