EP0453666A1 - Luminaires - Google Patents

Luminaires Download PDF

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Publication number
EP0453666A1
EP0453666A1 EP90304339A EP90304339A EP0453666A1 EP 0453666 A1 EP0453666 A1 EP 0453666A1 EP 90304339 A EP90304339 A EP 90304339A EP 90304339 A EP90304339 A EP 90304339A EP 0453666 A1 EP0453666 A1 EP 0453666A1
Authority
EP
European Patent Office
Prior art keywords
reflector means
light
reflector
luminaire
light source
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Withdrawn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
EP90304339A
Other languages
German (de)
English (en)
Inventor
Gregory Michael Marcia
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.)
POWERTECH INDUSTRIES Pty Ltd
Original Assignee
POWERTECH INDUSTRIES Pty Ltd
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 POWERTECH INDUSTRIES Pty Ltd filed Critical POWERTECH INDUSTRIES Pty Ltd
Priority to EP90304339A priority Critical patent/EP0453666A1/fr
Publication of EP0453666A1 publication Critical patent/EP0453666A1/fr
Withdrawn legal-status Critical Current

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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
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • THIS INVENTION relates to luminaires.
  • this invention relates to luminaires which are required to provide a relatively wide area of well distributed light, such as in street lighting.
  • the invention however is not to be understood as being limited thereto.
  • the design of the luminaires is generally directed to optimising this light spread, but costs are a restriction on the design. Most often, the luminaire has a concentration of light immediately underneath it and an insufficient distribution of light away from the luminaries, which causes uneveness of lighting for motorists and represents a waste of lighting energy.
  • a luminaire comprising a first reflector means adjacent a light source location, and arranged to direct light from the source location to at least one side of the source location and the first reflector means, and second reflector means on the opposite side spaced from the first reflector means, and being arranged to direct light from the area of the source location in use, passed the rear of the first reflector means generally away from the same side as light from the first reflector means.
  • the reflector means to be arranged to reflect light from the first reflector means to be received and redirected by the second reflector means.
  • the first reflector means Preferably two side reflectors on opposite sides of the light source location form the first reflector means, with the reflectors being shaped to direct light to the gaps on both sides thereof.
  • the second reflector means there is provided for the second reflector means to be in the form of a "gull-wing" reflector, with the V-shape of the wing being located immediately opposite the light source location and in the middle of the two side reflectors.
  • the wing portions of the second reflector means are then arranged to pass around the side reflector means on each side, to direct light around the rear thereof.
  • a luminaire (1) comprises a housing (2) for reflector means, which are further now described below, and for a gas discharge tube light source (3) located thereunder.
  • the luminaire is arranged to be located on a street lamp standard indicated diagrammatically by numeral (4), above a ground surface (5).
  • a first reflector means comprises two side reflectors (6) in the form of long strips located parallel one to each side of the light source, and being curved in their short side which is vertical in operative orientation, and also in the long side.
  • the curvation of the reflector is arranged to direct light to upper and lower gaps (7) and (8) respectively formed between the two reflectors with the light source in the middle.
  • a second reflector means (9) is provided and comprises a gull-wing type reflector having its V-shape (10) located spaced apart and above the light source (3), with the wing reflectors extending to each side of this position, well passed the location of the side reflectors (6).
  • a gap (11) between the wing portion of the reflectors and the upper edge of the side reflectors is created with this arrangement.
  • Direct light (14) from the light source is also of course received at the ground surface (5).
  • the light reflected in this upward direction is received by a rear reflector and redirected towards any side reflectors, and towards the path of direct light.
  • This reflected light reinforces the concentration effect in the immediate path of direct light from a light source.
  • the invention provides a useful spread of light which is of even distribution over a good area.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP90304339A 1990-04-23 1990-04-23 Luminaires Withdrawn EP0453666A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90304339A EP0453666A1 (fr) 1990-04-23 1990-04-23 Luminaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90304339A EP0453666A1 (fr) 1990-04-23 1990-04-23 Luminaires

Publications (1)

Publication Number Publication Date
EP0453666A1 true EP0453666A1 (fr) 1991-10-30

Family

ID=8205389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90304339A Withdrawn EP0453666A1 (fr) 1990-04-23 1990-04-23 Luminaires

Country Status (1)

Country Link
EP (1) EP0453666A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373710A (fr) *
DE247947C (fr) *
FR770167A (fr) * 1934-03-14 1934-09-10 Appareil pour l'éclairage indirect ou semi-direct
US2305722A (en) * 1940-08-15 1942-12-22 Faries Mfg Co Lighting fixture
CH444095A (de) * 1965-07-30 1967-09-30 Jarnkonst Ab Beleuchtungsarmatur, insbesondere zur Strassenbeleuchtung
FR2333359A1 (fr) * 1975-11-25 1977-06-24 Lampes Sa Dispositif reflecteur pour la concentration d'un flux d'ondes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373710A (fr) *
DE247947C (fr) *
FR770167A (fr) * 1934-03-14 1934-09-10 Appareil pour l'éclairage indirect ou semi-direct
US2305722A (en) * 1940-08-15 1942-12-22 Faries Mfg Co Lighting fixture
CH444095A (de) * 1965-07-30 1967-09-30 Jarnkonst Ab Beleuchtungsarmatur, insbesondere zur Strassenbeleuchtung
FR2333359A1 (fr) * 1975-11-25 1977-06-24 Lampes Sa Dispositif reflecteur pour la concentration d'un flux d'ondes

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Legal Events

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

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Effective date: 19920501