EP0445874A1 - Dispositif d'illumination produisant un faisceau en forme d'éventail - Google Patents

Dispositif d'illumination produisant un faisceau en forme d'éventail Download PDF

Info

Publication number
EP0445874A1
EP0445874A1 EP91200438A EP91200438A EP0445874A1 EP 0445874 A1 EP0445874 A1 EP 0445874A1 EP 91200438 A EP91200438 A EP 91200438A EP 91200438 A EP91200438 A EP 91200438A EP 0445874 A1 EP0445874 A1 EP 0445874A1
Authority
EP
European Patent Office
Prior art keywords
light
light source
refractor
light sources
light beam
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
EP91200438A
Other languages
German (de)
English (en)
Other versions
EP0445874B1 (fr
Inventor
Pietro Maria Castiglioni
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.)
Iguzzini Illuminazione SRL
Iguzzini Illuminazione SpA
Original Assignee
Iguzzini Illuminazione SRL
Iguzzini Illuminazione SpA
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 Iguzzini Illuminazione SRL, Iguzzini Illuminazione SpA filed Critical Iguzzini Illuminazione SRL
Publication of EP0445874A1 publication Critical patent/EP0445874A1/fr
Application granted granted Critical
Publication of EP0445874B1 publication Critical patent/EP0445874B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21W2131/10—Outdoor lighting
    • F21W2131/107—Outdoor lighting of the exterior of buildings
    • 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
    • F21W2131/10—Outdoor lighting
    • F21W2131/109—Outdoor lighting of gardens

Definitions

  • the present invention relates to an illumination device particularly suitable for illuminating vertical or flat surfaces such as the fronts of buildings, house entrances, ceilings or walls of interiors in general as well as suitable for illuminating any surface (of any spatial inclination) or area of open spaces such as gardens and the like.
  • these spotlights generate a light beam (usually conical) which dazzles those who find themselves within the beam itself such as the inhabitants of the building who may look out of its windows or the inhabitants of the nearby buildings illuminated, as stated, by the diffusion of the dissipated light.
  • These spotlights are arranged, on supports protruding from the front of the building, at a short distance (at least about ten centimetres away) from the building and generate a light beam which shines on the exit area, entrance or main door.
  • the light used for illumination is minimal, whilst the greater part of that generated by the spotlights is dissipated.
  • high-powered spotlights are used and this has a detrimental effect on their cost and on the cost of actual illumination. Arrangement of these spotlights close to the building is also sometimes problematical due to the presence of the above-mentioned protruding supports.
  • the aim of the present invention is therefore to create an illumination device of the above-mentioned type which has a high performance i.e. in which dissipation of the light generated is very low, which thus enables the desired areas to be illuminated in the optimum way and has very low operating costs as compared to those of similar known devices.
  • Another aim is to offer a device of the said type which enables only particular desired areas to be illuminated, such as the fronts, exits or main doors of buildings, without illuminating the areas adjacent to them as well.
  • a further aim is to offer a device that enables essentially uniform illumination of the desired areas without using high-powered light sources.
  • Another aim is to create a device which enables the illumination of the fronts, doors or exits of buildings without requiring supports protruding from the said fronts and without requiring supports placed at a distance from the said buildings.
  • Another aim is to create a device which may be used in an essentially similar way both to illuminate walls, ceilings or floors of the interiors of buildings and to illuminate areas outside such building.
  • a device of the above-mentioned type characterised in that it comprises at least one light source arranged in association with at least one refractor element with a single axis and projecting a light beam onto the latter, the said beam passing through the said refractor and leaving it in the form of a light beam with an essentially fan-shaped blade conformation.
  • the said device comprises at least two light sources set at an angle to each other so that the beams generated are superimposed on at least one part of an illuminated surface, the said surface being longitudinal to the light sources, the said light sources being arranged in association with the refractor element, the combination of the said sources and said element generating the essentially fan-shaped blade light beam.
  • an illumination device (or appliance) is shown generally by 1 and comprises at least one light source 2 (in the Figures in question there are two such sources) and a refractor element 3 linked to a support element or base 4.
  • This refractor element and the said base form a box body within the compartment 5 of which are arranged the light sources 2, the said refractor element 3 and the said base being linked together by means of at least one screw 6.
  • refractor element 3 is a single-axis transparent element, advantageously of a known "ribbed glass", and has an essentially trapezoid cross section. This refractor element makes it possible to generate, from a standard light beam produced by sources 2, an essentially blade-shaped light beam arranged, in space, in a fan.
  • each of the oblique sides 8 of the said refractor 3 is a light source 2 the axis of which is essentially at right angles to that of the said side 8.
  • the latter comprises a parabola 9, a standard bulb 10, advantageously a low-powered halogen bulb partially shielded by a reflector element in 11 and a transverse plate 12 arranged at right angles to the said bulb.
  • Each of the said light sources 2 is linked to a support 13 (bulb socket) and is advantageously supplied by a transformer 14 supported by base 4.
  • This transformer is clearly of a suitable size for both of the said sources.
  • Figures 2 and 3 also show, linked to the said transformer, an electrical connection element (terminal board) 15 advantageously fitted with a fuse (not shown) to provide electrical protection for device 1.
  • transformer 14 which is essential, enables bulbs 10 to be supplied and allows their characteristics to be exploited to the full as well as prolonging their lifetime.
  • This transformer may be inserted in compartment 5 or placed upstream of device 1.
  • light sources 2 are arranged at an angle to each other: advantageously in relation to a common vertical axis (e.g. coinciding with that of screw 6) these light sources are arranged at angles of between 35 o and 50 o .
  • the distance and reciprocal angulation of the light sources may be varied e.g. by linking each bulb with a rack (not shown) in the form of an arc of a circle and co-operating with gearing which can be operated from the outside of device 1.
  • the said element 23 co-operates with a fixed pin 25 arranged in front of each plate 24 and linked to base 4 to which the said plates are also linked. This enables a more positive action of the said element 23 on such plates and allows precise adjustment of the spatial inclination of the light sources in relation to a longitudinal surface of illumination.
  • the device in question illustrated in the Figures, enables a surface such as the front of a building, a garden or suchlike to be illuminated by a usually fan-shaped blade of light.
  • the said blade of light may be arranged at different angles in relation to a set longitudinal surface; advantageously, in a device 1 with at least two light sources 2, the latter generate light beams which superimpose upon each other on at least part of the illuminated surface.
  • Figures 5 and 6 show another two forms of embodiment of the invention. These forms have, unlike the embodiment previously described, a single light source or three light sources arranged at an angle in relation to each other. As for the rest, the characteristics of the embodiment shown in Figures 1 to 5 are the same as those of the embodiments shown in Figures 5 and 6 where parts corresponding to those already described bear the same reference numbers.
  • Figures 7 and 8 show illumination systems in which two of the devices described and shown in Figures 1 to 6 are joined together in any known way.
  • An illumination device enables any surface such as the fronts of buildings or their parts, gardens or suchlike to be illuminated in an optimum way by a fan-shaped blade of light.
  • This illumination is achieved by using low-powered bulbs and with the minimum possible dissipation of the light beam generated. This enables maximum results with minimum illumination costs.
  • a device created according to the invention is compact, light and easy to install; it enables simple replacement of bulbs in the event of failure and easy arrangement in association with the surfaces to be illuminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Radiation-Therapy Devices (AREA)
EP91200438A 1990-03-06 1991-03-01 Dispositif d'illumination produisant un faisceau en forme d'éventail Expired - Lifetime EP0445874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19580A IT1241654B (it) 1990-03-06 1990-03-06 Dispositivo per l'illuminazione generante un fascio luminoso sostanzialmente a ventaglio
IT1958090 1990-03-06

Publications (2)

Publication Number Publication Date
EP0445874A1 true EP0445874A1 (fr) 1991-09-11
EP0445874B1 EP0445874B1 (fr) 1994-12-21

Family

ID=11159213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200438A Expired - Lifetime EP0445874B1 (fr) 1990-03-06 1991-03-01 Dispositif d'illumination produisant un faisceau en forme d'éventail

Country Status (4)

Country Link
EP (1) EP0445874B1 (fr)
DE (1) DE69106016T2 (fr)
ES (1) ES2066330T3 (fr)
IT (1) IT1241654B (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751001A (fr) * 1932-05-21 1933-08-25 Dispositif optique pour appareils d'éclairage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751001A (fr) * 1932-05-21 1933-08-25 Dispositif optique pour appareils d'éclairage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CONFERENCE RECORD OF THE 1988 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING, PART II, Pittsburgh, PA, 2nd - 7th October 1988, pages 1865-1869; N.K. FALK: "Eye comfort in warehouse lighting situations" *
WPIL/DERWENT, abstract no. 87-353917 [50], Derwent Publications Ltd, London, GB; & SU-A-1 307 150 (E.F. RESHETIN) 30-04-1987 *

Also Published As

Publication number Publication date
IT1241654B (it) 1994-01-26
IT9019580A0 (it) 1990-03-06
EP0445874B1 (fr) 1994-12-21
DE69106016T2 (de) 1995-06-22
DE69106016D1 (de) 1995-02-02
ES2066330T3 (es) 1995-03-01
IT9019580A1 (it) 1991-09-06

Similar Documents

Publication Publication Date Title
US6632006B1 (en) Recessed wall wash light fixture
US4229782A (en) High efficiency lighting units with beam cut-off angle
US4344111A (en) High efficiency lighting units and systems using same
US4794501A (en) Indirect specular lamp
CA2404537C (fr) Reflecteur ameliore d'appareil d'eclairage de stade
US3591798A (en) Lighting fixture
EP0513907A2 (fr) Appareil d'éclairage pour créer un faisceau principal et un faisceau auxiliaire
EP1043542A3 (fr) Système d' éclairage pour installation au plafond ou au mur d' une pièce
ATE230838T1 (de) Deckenanbauleuchte mit einem scheibenförmigen lichtleiter
US10274171B2 (en) Adjustable LED light fixture for use in a troffer
US7556399B1 (en) Light reflector assembly having opposed reflector sections
DE50200235D1 (de) Reflektorleuchte, insbesondere Boden-,Decken-oder Wandeinbau-Reflektorleuchte
US4237528A (en) Luminaire
US5093767A (en) Space lighting fitting
US3319059A (en) Sectional lighting fixture
EP0445874B1 (fr) Dispositif d'illumination produisant un faisceau en forme d'éventail
CA2307466A1 (fr) Ferrure de montage inclinee pour appareil d'eclairage fluorescent a lumen eleve oriente vers le bas
KR102333645B1 (ko) 각도조절이 용이한 엘이디조명시스템
CA2238557C (fr) Systeme pour montage d'un assemblage luminaire
JPH08102213A (ja) 照明器具
US3364348A (en) Indirect lighting fixture providing a uniform light distribution
US3435204A (en) Lighting fixture
DE3785997D1 (de) Deckeneinbauleuchte.
EP0994294A3 (fr) Dispositif d'éclairage pour la fixation sur une première paroi définissant une surface d'émission de lumière
WO1999039131A1 (fr) Luminaires

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): DE ES FR GB

17P Request for examination filed

Effective date: 19911206

17Q First examination report despatched

Effective date: 19930511

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB

REF Corresponds to:

Ref document number: 69106016

Country of ref document: DE

Date of ref document: 19950202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2066330

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
RIN2 Information on inventor provided after grant (corrected)

Free format text: CASTIGLIONI, PIETRO MARIA

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060223

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060301

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060308

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20060425

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20071130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070301

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070402

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070302