EP0801264A1 - Leuchte - Google Patents

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Publication number
EP0801264A1
EP0801264A1 EP97200984A EP97200984A EP0801264A1 EP 0801264 A1 EP0801264 A1 EP 0801264A1 EP 97200984 A EP97200984 A EP 97200984A EP 97200984 A EP97200984 A EP 97200984A EP 0801264 A1 EP0801264 A1 EP 0801264A1
Authority
EP
European Patent Office
Prior art keywords
holder
luminaire
bracket
walls
housing
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.)
Withdrawn
Application number
EP97200984A
Other languages
English (en)
French (fr)
Inventor
Frederik Kremer
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP97200984A priority Critical patent/EP0801264A1/de
Publication of EP0801264A1 publication Critical patent/EP0801264A1/de
Withdrawn legal-status Critical Current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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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 luminaire comprising:
  • Such a luminaire is known from EP-B-0 241 074.
  • luminaires a small constructional height.
  • means for operating the lamp or lamps such as a supply unit, such as, for example, a ballast, are preferably accommodated in the luminaire in a space laterally of the lamp space.
  • a supply unit such as, for example, a ballast
  • Such commercially available devices are usually so designed, as also in the case of the known luminaire, that the means for fastening them to a housing, such as screws, are applied to a location of the bottom between the walls. Given a compact construction of the luminaire, however, this location is often difficult to reach through the light emission window with a tool, or indeed not at all.
  • a frame is present in the housing to which the circuitry unit is fastened before the frame is enclosed in the housing.
  • a disadvantage of this is that the luminaire must be fully dismantled for the replacement of a defective circuitry unit.
  • a frame requires additional mounting steps.
  • this object is achieved in that the holder is connected with clamping force at at least one end portion to a metal bracket which extends to laterally of the holder and has a fastening to the housing there.
  • the circuitry unit can be accommodated wholly or mainly in a channel-shaped space while its fastening or fastenings is/are nevertheless realized laterally of the circuitry unit and are thus accessible through the light emission window.
  • the circuitry unit can accordingly be replaced without the luminaire being detached from its suspension points, for example at a ceiling, and without dismantling it. This would not be the case if the circuitry unit were fixed to the base from the outside, for example by means of screws through this base.
  • a fastening of the bracket to the holder of the circuitry unit with clamping force is attractive because of its simplicity. It is advantageous when the bracket is a substantially flat strip having parallel incisions in each of which a respective transitional portion is held with clamping fit. This bracket is particularly easy to apply in that it is passed over the holder. It is favorable then when the incisions each have a narrowing entrance so as to be self-locating.
  • the bracket may be so dimensioned that it cuts into the material of the holder when being placed thereon, whereby a good electrical contact is realized and the circuitry unit is reliably grounded via the bracket.
  • the placement on the transitional portions means that the bracket can fit only in one location, i.e. at one given distance to the bottom.
  • This fact is utilized in an advantageous embodiment in that the bracket is caused to press against the bottom of the holder. The bracket is then at only a small distance from the base, i.e. at a distance equal to the material thickness of the holder. It is prevented thereby that the bracket has given the circuitry unit a strong tilt after the bracket has been fastened in the housing.
  • the bracket may have a rim flanged towards the housing or a bulge with a height of approximately the material thickness of the holder at an end adjacent the fastening to the housing. Tilting is effectively counteracted thereby.
  • bracket has a bulge in the extended direction of an incision situated adjacent the fastening. This renders the bracket more resistant to bending in situ and renders the use of a narrower bracket and/or a bracket of thinner material possible. It is favorable then when the bulge has a height which is smaller than the material thickness of the bottom. The bulge will then lie clear of the housing, irrespective of the direction of the bulge.
  • brackets can be identical.
  • the luminaire has a housing 1 with a base 2 and connected thereto mutually opposed integral first walls 3 and mutually opposed assembled second walls 4, the first walls 3 being bent towards one another at a distance from the base 2 so as to bound a light emission window 5 together with the second walls 4 and to form a channel-shaped space 6 in the housing on either side of the light emission window.
  • a circuitry unit 10 for the high-frequency electric supply of an electric lamp is designed to be fixed in one of said channel-shaped spaces 6.
  • a lampholder 7 is present in the housing for accommodating an electric lamp 1 in front of the light emission window 5 and connect this lamp electrically to the unit 10.
  • the unit 10 is accommodated in a channel-shaped holder 11 with end portions 12.
  • the holder 11 is formed from metal plating and has a bottom 13 and perpendicular thereto walls 14 which are connected to the bottom 13 via transitional portions 15 which enclose an angle with the bottom 13 and with the walls 14.
  • the second walls 4 have a technical function, such as supporting a lampholder 7. They are each covered by a cap 4a in the finished luminaire.
  • the holder 11 is connected at at least one end portion 12, see Figs. 2 and 3, with clamping force to a metal bracket 20 which extends to laterally of the holder 11 and has a fastening 21 to the housing 1 there.
  • the fastening 21 in Fig. 1 is a screw which is inserted through an opening in the bracket 20 into a hole in the base 2 and tightened.
  • the bracket 20 is a substantially flat strip having parallel incisions 22, 23, see also Fig. 3, in each of which a respective transitional portion 15 is held with clamping force.
  • the bracket 20 presses against the bottom 13 of the holder 11, see Fig. 2.
  • the bracket has a bulge 24, see also Figs. 2 and 3, which lies in the extended direction of an incision 22 situated adjacent the fastening 21.
  • the bulge 21 has a height which is smaller than the material thickness of the bottom 13, see Fig. 2.
  • a bracket 20 is present for each of the two end portions 12 of the holder 11 in Fig. 1.
  • the brackets 20 are identical and, because of their simplicity, inexpensive.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP97200984A 1996-04-12 1997-04-04 Leuchte Withdrawn EP0801264A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97200984A EP0801264A1 (de) 1996-04-12 1997-04-04 Leuchte

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP96200993 1996-04-12
EP96200993 1996-04-12
EP97200984A EP0801264A1 (de) 1996-04-12 1997-04-04 Leuchte

Publications (1)

Publication Number Publication Date
EP0801264A1 true EP0801264A1 (de) 1997-10-15

Family

ID=26142693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200984A Withdrawn EP0801264A1 (de) 1996-04-12 1997-04-04 Leuchte

Country Status (1)

Country Link
EP (1) EP0801264A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363839A (en) * 2000-06-23 2002-01-09 H E Williams Inc Fluorescent light fixture with offset ballast-mounting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1044973B (de) * 1956-03-29 1958-11-27 Siemens Ag Leuchte fuer Leuchtstofflampen zum Einbau in Haengedecken
FR2122501A1 (de) * 1971-01-18 1972-09-01 Greco Fabbrica Ital Appa
EP0241074A2 (de) * 1986-04-04 1987-10-14 Philips Patentverwaltung GmbH Anbau- bzw. Pendelleuchte für langgestreckte Entladungslampen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1044973B (de) * 1956-03-29 1958-11-27 Siemens Ag Leuchte fuer Leuchtstofflampen zum Einbau in Haengedecken
FR2122501A1 (de) * 1971-01-18 1972-09-01 Greco Fabbrica Ital Appa
EP0241074A2 (de) * 1986-04-04 1987-10-14 Philips Patentverwaltung GmbH Anbau- bzw. Pendelleuchte für langgestreckte Entladungslampen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363839A (en) * 2000-06-23 2002-01-09 H E Williams Inc Fluorescent light fixture with offset ballast-mounting
GB2363839B (en) * 2000-06-23 2004-08-25 H E Williams Inc A fluorescent lighting fixture with offset ballast housing

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB

17P Request for examination filed

Effective date: 19980415

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20010531