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WO2009093167A1 - Lampe - Google Patents

Lampe Download PDF

Info

Publication number
WO2009093167A1
WO2009093167A1 PCT/IB2009/050190 IB2009050190W WO2009093167A1 WO 2009093167 A1 WO2009093167 A1 WO 2009093167A1 IB 2009050190 W IB2009050190 W IB 2009050190W WO 2009093167 A1 WO2009093167 A1 WO 2009093167A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
lens
light source
lamp body
previous
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.)
Ceased
Application number
PCT/IB2009/050190
Other languages
English (en)
Inventor
Cesare Alberti
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.)
SIMLUX SpA
Original Assignee
SIMLUX 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 SIMLUX SpA filed Critical SIMLUX SpA
Publication of WO2009093167A1 publication Critical patent/WO2009093167A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lamp and specifically a lamp for illuminating extensive or long, indoor or outdoor areas, such as corridors.
  • the illuminated area has various areas in which the beams of light coming from adjacent light sources overlap, as well as areas of illumination in which the light is unnecessarily dispersed, relative to the area to be illuminated.
  • figure 1 shows a perspective view of a lamp according to one embodiment of the present invention
  • figure 2 shows a front view, from the side of the arrow II in figure 1, of some components of the lamp in figure 1 ;
  • figure 3 shows a perspective view in separate parts of the lamp in figure 1 ;
  • figure 4 shows a cross-section view of the lamp in figure 1, along the cross-section line IV in figure 1 ;
  • figures 5a and 5b show schematic views of beams of light emitted respectively by a plurality of lamps of the known state-of the-art and of the present invention, in illuminating rectangular areas;
  • figures 6a and 6b show further schematic views of beams of light emitted respectively by a plurality of lamps of the known state-of-the-art and of the present invention, in illuminating square areas.
  • reference numeral 4 globally denotes a lamp, specifically for outdoor illumination.
  • said lamp 4 comprises a lamp body 8, being, for example, a box shape, so as to enclose at least one inner cavity 12.
  • the lamp 4 comprises a light source 16, preferably an LED (light emitting diode), for example lodged in said cavity 12 of the lamp body 8, and a lens 20 able to receive and diffuse the beam of light produced by the light source 16.
  • the inner cavity 12 is such as to accommodate solely the LED: in other words, the size of the inner cavity 12 is such as to accommodate solely the LED.
  • the lamp 4 comprises a power supply 24 of the light source 16, able to power the source.
  • the light source 16 is, for example, attached to a terminal board 28 which comprises electronic circuits to activate and control the source 16.
  • the lamp body 8 comprises at least one plate 32, able to act as a support for the light source and/or relative terminal board 28.
  • said plate 32 acts as a heat dissipator able to encourage the transmission of heat from the light source 16 outwards, preventing, as far as possible, overheating of the light source 16 and of the control electronics of the lamp 4.
  • the plate 32 comprises at least one aperture 36 able to allow the transit of light emitted by the light source 16.
  • the lens 20 is lodged in a relative seat 40 of the lamp body 8.
  • the lamp body 8 comprises a pair of walls 44 defining the seat 40.
  • said walls 44 join the plate 32, for example at the aperture 36.
  • the lens has a mainly longitudinal extension (X-X), the lens 20 having an essentially parabolic cross-section in relation to a cross-section plane perpendicular to said mainly longitudinal extension
  • the lens 20 acquires an overall bar shaped configuration with a parabolic cross-section.
  • the cross-section of the lens 20 is constant along the mainly longitudinal extension X-X of the lens 20.
  • the lens 20 is essentially a straight cylinder having a parabolic cross-section in relation to a cross-section plane perpendicular to the main direction of extension X-X, the generators of the cylinder being parallel to said main extension.
  • Such shape means that the direction of the light emitted by the light source 16 is not modified in the direction X-X, but only in a transversal direction Y-Y so that the natural cone-shaped emission is flattened in a single direction, acquiring an elliptical, almost rectangular shape.
  • the transversal direction Y-Y is perpendicular to the direction X-X as well as to a vertical direction of emission of the beam of light.
  • the cross-section of the lens 20 may be variable in its longitudinal extension X-X, so that the distribution of light, in this longitudinal extension X-X, may be modified, preferably concentrating more light towards the extremity of the lamp body 8 opposite the same longitudinal extension X-X.
  • said section presents a wall 48, flat or concave, directly facing the light source 16, to which a pair of lateral walls 52 are joined, having a parabolic profile in relation to a cross-section plane perpendicular to the mainly longitudinal extension X-X.
  • the seat 40 of the lamp body 8 comprises at least one pair of walls 44 counter-shaped to the lateral walls 52 of the lens 20 so as to accommodate the lens 20 coming into direct contact with the lens 20.
  • the walls 44 extend all along the extension of the lateral walls 52 of the lens 20, so as to increase the contact surface between the wall and the lens itself as far as possible.
  • the walls 44 are made in metal material, so as to encourage heat exchange on contact, that is by conduction, between the lens 20 and the lamp body 8, so as to keep the entire system as isothermal as possible.
  • the part of light which, even if minimal, comes out of the lens 20 laterally can be recovered and reflected outwards and in the same direction.
  • the difference in dilation caused by heat, of the lens 20 and the lamp body 8 can be reduced to a minimum thus reducing thermal and mechanical stress and lengthening the life of the lens itself 20.
  • the lens 20 is generally made from a fragile material and if subjected to excessive thermal and mechanical stress, micro-fractures destined to shorten its life may be generated.
  • accurate positioning and coupling of the lens and the light source 16, such as the LED can be ensured and maintained.
  • the lens 20 is joined to the lamp body 8 so as to form a cover cap , protecting the light source 16.
  • one emission wall 64 of the lens 20, opposite the light source 16 is positioned directly flush with a profile or external perimeter of the lamp body 8, so as to form a cover cap of the lamp body 8 itself.
  • a wall of the lamp body 8 has a seat 40 which is closed directly by the lens without requiring the use of further screens or cover caps of the lens 20.
  • the lamp body 8 extends beyond the edge of the lens, entirely or with its appendages (not shown) , so that the lens 20 finds itself set inside the lamp body 8 itself. This makes it possible to mask the light source 16 to the eyes of the user, thereby achieving a reduction of light pollution (a characteristic known of in the world of lighting as cutoff) .
  • the lens 20 is attached to the lamp body by hermetically sealed attachment means 80.
  • the hermetically sealed attachment means 80 comprise at last one seal 84 positioned between a wall 44 of the seat 40 and a lateral wall 52 of the lens 20, said seal 84 being at least partially lodged both in the lateral wall 52 and in the wall 44.
  • the wall 44 comprises a first groove 88, for example longitudinal, able to lodge said seal 84 at least partially.
  • the lateral wall 52 of the lens 20 comprises at least one second groove 92 able to lodge said seal 84 at least partially.
  • the first and second grooves 88,92 face each other and are aligned with each other so as to accommodate the seals 84.
  • the seals 84 therefore constitute a restraint to the extraction of the lens 20 from the seat 40, as well as ensuring the hermetic seal of the seat from dust and from water.
  • the grooves 88,92 of the lens 20 and of the walls 44 are at least partially counter-shaped 44 to the connectable seals 84.
  • the sealed attachment means are lodged entirely inside the lamp body 8, so as not to be accessible and/or visible from outside the lamp body 8, in one assembly configuration of the lamp 4.
  • the sealed attachment means 80 comprise a pair of bars in polymer material, preferably transparent, positioned essentially parallel to said main direction of extension X-X.
  • the sealed attachment means 80 comprise bars with a circular cross- section .
  • the lamp 4 comprises a pair of end plugs 100, positioned to cover the longitudinal extremities 104 of the lens 20; the main function of such end plugs 100 is to complete the hermetic seal of the lens 20.
  • the end plugs 100 may have a protruding rim to further ensure that the lens 20 remains in its seat.
  • the overall system of attachment of the lens 20 is however totally free of screws which would block the lens to the lamp body in a rigid manner with the ensuing risk of causing micro fractures destined to shorten its life.
  • the seals are inserted in the seats or grooves of the lamp body, and subsequently the lens is inserted under pressure into its relative seat.
  • the seal is partially lodged in the grooves of the lens and thus remains fixed in position.
  • the lamp according to the invention makes it possible to overcome the problems present in the known technique.
  • the lamp which the present invention relates to makes it possible to emit an essentially rectangular beam of light so as to prevent dispersion of the beam of light outside the area to be illuminated.
  • the use of a rectangular luminous beam makes it possible to: [0056] illuminate a rectangular or square area considerably reducing the dispersion of light compared to a conventional lamp emitting a circular beam.
  • the lamp according to the present invention also permits an improvement in heat dissipation from the light source and thus a longer duration of the light itself.
  • the lens is positioned directly in contact with the relative seat of the lamp body, so as to ensure thermal conductivity by contact at least on the lateral surface of the lens itself. This way a heat dissipation flow is generated from the side opposite the light source and overheating phenomena of the light source are avoided, increasing the relative duration.
  • the attachment system of the lens to the lamp body avoids the use of ferrules or lock bushing which, as well as increasing the weight and complexity of assembly of the lamp, tend to interfere with the beam of light emitted, reducing the luminous efficiency of the lamp .
  • the use of screens to hermetically protect and cover the light source is avoided: in fact the lens itself is used as a protective screen. This way the use of additional screens in glass or transparent material is avoided.
  • the lamp according to the present invention thanks to the elimination of additional protective screens, is lighter and cheaper to assemble and the light source has a longer duration given that heat dissipation is considerably improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne une lampe, en particulier pour l'illumination extérieure, laquelle lampe comprend un corps de lampe (8), une source lumineuse (16) installée dans ledit corps de lampe (8), une lentille (20) pouvant recevoir et diffuser le faisceau de lumière émis par la source lumineuse (16), ladite lentille (20) étant installée dans un logement correspondant du corps de lampe (8). La lentille (20) comporte une extension (X-X) principalement longitudinale et une section transversale essentiellement parabolique par rapport à un plan transversal perpendiculaire de ladite extension (X-X) principalement longitudinale, de sorte que la lentille acquiert une configuration globale en forme de barreau comportant une section transversale parabolique.
PCT/IB2009/050190 2008-01-22 2009-01-20 Lampe Ceased WO2009093167A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS2008A000008 2008-01-22
IT000008A ITBS20080008A1 (it) 2008-01-22 2008-01-22 Lampada

Publications (1)

Publication Number Publication Date
WO2009093167A1 true WO2009093167A1 (fr) 2009-07-30

Family

ID=40289961

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/050190 Ceased WO2009093167A1 (fr) 2008-01-22 2009-01-20 Lampe

Country Status (4)

Country Link
AR (1) AR070216A1 (fr)
IT (1) ITBS20080008A1 (fr)
TW (1) TW200940900A (fr)
WO (1) WO2009093167A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012001593A3 (fr) * 2010-07-01 2012-03-01 Koninklijke Philips Electronics N.V. Dispositif d'éclairage
EP2480819A4 (fr) * 2009-09-25 2013-06-26 Osram Opto Semiconductors Gmbh Luminaire
DE102021104743A1 (de) 2021-02-26 2022-09-01 Grimmeisen Licht Gmbh Leuchte mit Schiebeführung für Lichtlenkelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707747A (en) * 1951-09-07 1955-05-03 Barbara B De Frees Sealing means for lamp housing closure
EP1182396A1 (fr) * 2000-08-22 2002-02-27 Koninklijke Philips Electronics N.V. Luminaire basé sur l'émission lumineuse de diodes électroluminescentes
US20050205878A1 (en) * 2004-02-26 2005-09-22 Peter Kan Apparatus for forming an asymmetric illumination beam pattern
US20070058377A1 (en) * 2005-09-15 2007-03-15 Zampini Thomas L Ii Interconnection arrangement having mortise and tenon connection features

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707747A (en) * 1951-09-07 1955-05-03 Barbara B De Frees Sealing means for lamp housing closure
EP1182396A1 (fr) * 2000-08-22 2002-02-27 Koninklijke Philips Electronics N.V. Luminaire basé sur l'émission lumineuse de diodes électroluminescentes
US20050205878A1 (en) * 2004-02-26 2005-09-22 Peter Kan Apparatus for forming an asymmetric illumination beam pattern
US20070058377A1 (en) * 2005-09-15 2007-03-15 Zampini Thomas L Ii Interconnection arrangement having mortise and tenon connection features

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2480819A4 (fr) * 2009-09-25 2013-06-26 Osram Opto Semiconductors Gmbh Luminaire
US9453994B2 (en) 2009-09-25 2016-09-27 Osram Opto Semiconductors Gmbh Luminaire
WO2012001593A3 (fr) * 2010-07-01 2012-03-01 Koninklijke Philips Electronics N.V. Dispositif d'éclairage
DE102021104743A1 (de) 2021-02-26 2022-09-01 Grimmeisen Licht Gmbh Leuchte mit Schiebeführung für Lichtlenkelement
DE102021104743B4 (de) * 2021-02-26 2024-06-27 Grimmeisen Licht Gmbh Leuchte mit Schiebeführung für Lichtlenkelement

Also Published As

Publication number Publication date
AR070216A1 (es) 2010-03-25
TW200940900A (en) 2009-10-01
ITBS20080008A1 (it) 2009-07-23

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