WO2011120544A1 - Appareil d'éclairage led, en particulier lampadaire led d'éclairage public - Google Patents

Appareil d'éclairage led, en particulier lampadaire led d'éclairage public Download PDF

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Publication number
WO2011120544A1
WO2011120544A1 PCT/EP2010/003518 EP2010003518W WO2011120544A1 WO 2011120544 A1 WO2011120544 A1 WO 2011120544A1 EP 2010003518 W EP2010003518 W EP 2010003518W WO 2011120544 A1 WO2011120544 A1 WO 2011120544A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
light
emitting diode
led
led lamp
Prior art date
Application number
PCT/EP2010/003518
Other languages
German (de)
English (en)
Inventor
Nguyen Vaniquang
Peter Oetjens
Thomas Kuhle
Original Assignee
We-Ef Leuchten Gmbh & Co. Kg
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 We-Ef Leuchten Gmbh & Co. Kg filed Critical We-Ef Leuchten Gmbh & Co. Kg
Priority to EP10724714A priority Critical patent/EP2553321A1/fr
Publication of WO2011120544A1 publication Critical patent/WO2011120544A1/fr

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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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

  • LED light in particular LED street light
  • the invention relates to an LED lamp referred to in the preamble of claim 1 Art.
  • LED lights of the type in question are used in various fields of application and are suitable, for example, for illuminating squares, for example parking spaces, paths and roads, as an LED street light.
  • the well-known LED lights are equipped with a base body, with one on the
  • Main body arranged light emitting diode and arranged in the beam direction of the light emitting diode in front of the LED cover.
  • the light-emitting diode is aligned with the cover in such a way that light rays impinge perpendicularly or approximately perpendicularly on the cover in a main beam axis of the light-emitting diode.
  • a transparent medium as it may be, for example, a cover of an LED light
  • the light beam loses luminous intensity in particular by the fact that some of the energy is lost by absorption and / or reflection on the cover.
  • the invention has for its object to improve the energy efficiency of an LED light of the type mentioned in the preamble of claim 1.
  • the invention is detached from the idea of using larger light-emitting diodes or light-emitting diodes with higher ones To increase energy consumption or the number of LEDs. Rather, it is based on the idea to improve the coverage such that the loss of light output of an LED light-emitting diode is reduced due to the downstream in the beam direction of the LED cover.
  • the invention solves this problem in that the cover is shaped such that in at least one area of the main beam axis of the light emitting diode from the light emitting diode emanating light rays perpendicular or approximately perpendicular to the cover.
  • a cover according to the invention is understood to mean a device which serves as a functional carrier and, in particular, protects the light-emitting diode against weather or environmental influences.
  • a cover can also be used to improve an aesthetic effect.
  • a cover according to the invention may be preceded or arranged downstream by one or more covers or coverings.
  • a cover can be formed or shaped in various ways and, for example, by interaction with a base body, a light-emitting diode Protect from all weather / environmental influences.
  • a main beam axis of a light-emitting diode is understood to mean the axis in which the light-emitting diode radiates with the greatest intensity.
  • An LED lamp according to the invention may comprise a light emitting diode z. B. is alternatively formed by a plurality of correspondingly adjacent to each other arranged light-emitting diodes. Moreover, it is also possible according to the invention to combine an LED lamp with other, different types of light sources.
  • an advantageous development of the invention provides that a plurality of light-emitting diodes on the base body to each other, in particular grid-like, preferably rectangular grid-like, are arranged and the cover is shaped such that each in at least one area laterally from the main beam axis of the respective light emitting diode Outgoing light rays impinge on the cover perpendicular or approximately perpendicular.
  • a further advantageous development of the invention provides that the cover is shaped in an arc shape, in particular circular arc shape, at least in sections.
  • This has the advantage that light-emitting diodes can be used without their light radiation by, for example, beam shaping Body must be specially shaped. This results in cost advantages, for example, due to the fact that produced in industrial mass production LEDs are used. Furthermore, this simplifies the assembly of an LED lamp according to the invention, as well as their maintenance.
  • a further advantageous embodiment of the invention provides that the cover is at least partially arcuate, in particular nikbogenför- shaped. This has the advantage that a cover can be formed in a simple manner, thereby increasing the energy efficiency of an LED lamp.
  • the cover is at least partially rotationally symmetrical to a rotation axis, in particular spherical shaped. This results in the advantage that, in particular in the case of light-emitting diodes which emit light beams in an angular range to the main beam axis, a greater proportion of emitted light beams of this light-emitting diode impinge perpendicularly or approximately perpendicularly on the cover.
  • a further advantageous embodiment of the invention provides that the cover at least sections of glass and / or plastic, wherein the plastic is in particular acrylic and / or polycarbonate or contains. This results in addition to the cost advantages due to ease of processing and low material costs and benefits in weight of a cover according to the invention.
  • FIG. 2 shows a schematic cross-sectional illustration of an LED luminaire of the type mentioned in the preamble of claim 1, a first exemplary embodiment of an LED luminaire according to the invention with a light-emitting diode in a schematic cross-sectional representation, A second embodiment of an LED lamp according to the invention with a plurality of light-emitting diodes in a schematic cross-sectional view, a plan view of the cover of the second embodiment shown in Fig. 4 according to the direction indicated in Figure 4 by A direction.
  • Fig. 1 shows a planar portion 2 of a cover of an LED light 4 referred to in the preamble of claim 1.
  • a light beam 6 of a light emitting diode 8 is shown, at an angle 10 to the planar portion 2 of the cover 12 impinges on the cover 12.
  • part of the light beam 6 is transmitted through the first boundary layer 14 of the cover 12, while the remaining part is transmitted to the first one
  • Boundary layer 14 of the cover 12 is reflected.
  • the reflected part 16 of the light beam 6 forms the resulting at the first boundary layer 14 loss of incident on the cover 12 light beam 6. Further losses may result, inter alia, that the transmitted portion 18 of incident on the cover 12 light beam 6 at a second boundary layer 20 of the cover 12 partially reflective is being done.
  • Fig. 2 shows an embodiment of an LED lamp 4 referred to in the preamble of claim 1, wherein a plurality of light-emitting diodes 8 spaced from each other on the base body 24 are arranged.
  • a cover 12 is arranged, which protects the LEDs 8 from weather / ambient influences on all sides by interaction with the base body 24.
  • the cover 12 is formed transversely to the beam direction 22 of the LED lamp 4 planar, so that the explained with reference to FIG. 1 losses occur in terms of light intensity.
  • FIG. 3 shows a first exemplary embodiment of an LED luminaire 4 according to the invention, which can be used as an LED street light for illuminating roads and paths.
  • the illustrated LED light 4 has a main body 24 and a light-emitting diode 8 arranged on the main body 24.
  • a cover 12 is arranged in front of the light emitting diode 8, wherein the light emitting diode 8 is aligned to the cover 12 such that light rays 6 in a main beam axis 26 of the light emitting diode 8 perpendicular or approximately perpendicular to the cover 12 impinge.
  • the cover 12 is shaped in such a way that light rays 6 emanating from the light-emitting diode 8 laterally from the main beam axis 26 of the light emitting diode 8 impinge perpendicularly or approximately perpendicularly on the cover 12 in at least one region 28, 28 '. Furthermore, the cover 12 is at least partially rotationally symmetrical to a rotation axis 30, which in this
  • Embodiment of an LED lamp according to the invention 4 coincides with the main beam axis 26, spherically shaped.
  • the first Guidance example of an LED lamp 4 according to the invention characterized in that the cover 12 is made entirely of transparent plastic, which is acrylic.
  • FIG. 4 shows a second exemplary embodiment of an LED lamp 4 according to the invention. For a better overview, only the differences from the first exemplary embodiment shown in FIG. 3 will be explained below.
  • the second embodiment of an LED lamp 4 is characterized in that a plurality of
  • LEDs 8 are arranged on the base body 24 spaced from each other.
  • the light-emitting diodes 8 are arranged in a grid pattern relative to one another.
  • the cover 12 is formed such that in each case in a region laterally of the main beam axis 26 from the respective light emitting diode 8 outgoing light beams 6 impinge perpendicular or approximately perpendicular to the cover 12.
  • the light beams 6 are not shown.
  • Fig. 5 shows the cover 12 of the second embodiment of an LED lamp 4 according to the invention in the marked in Fig. 4 by A view.
  • the transparent cover 12 made of acrylic according to the first embodiment is shaped such that the circular arc cross section shown in FIG. 4 is respectively extended over a plurality of light emitting diodes 8 so that the light emitting diodes 8 belonging to a column 32 of the light emitting diodes 8 arranged in a rectangular grid fashion relative to each other on the base body 24 each associated with a cross-sectionally circular section 34 of the cover 12.
  • the cross-sectionally arc-shaped sections 34 of the cover 12 are arranged directly adjacent to each other, whereby the LEDs 8 only need a small area to their arrangement on the base body 24.
  • LEDs 8 are symbolically represented by a cross and provided only once with a reference numeral.
  • FIG. 6 shows a further exemplary embodiment of the cover 12 for the second exemplary embodiment of an inventive LED light 4 shown in FIG. 4 in a view according to the direction indicated by A in FIG. 4 for forming a third exemplary embodiment of an LED light 4 according to the invention.
  • the cover 12 is formed in contrast to the second embodiment of an LED lamp 4 according to the invention such that the cover 12 is at least partially rotationally symmetrical to a rotational axis 30 spherically shaped.
  • the axis of rotation 30 is not and the light-emitting diodes symbolically represented by a cross.
  • both the rotationally symmetric shaped portions 36 as well as the light emitting diodes 8 are indicated only once with the corresponding reference numerals.
  • the corresponding rotationally symmetrical shaped sections 36 are each associated with a light-emitting diode 8, which are arranged according to the second embodiment of an LED lamp 4 according to the invention, so that the individual rotationally symmetric sections 36 are also arranged rectangular grid on the cover 12.
  • the cover 12 in various ways or to shape. It is particularly advantageous to carry out the cover 12 in one piece, so that - if the cover 12 is made of plastic - this can be made for example as a plastic injection molded part.
  • the cover 12 may also be made of different segments, which are arranged to each other and form the cover 12 by their arrangement.
  • the surface of the cover facing away from the light-emitting diodes 8 in the assembled state of the LED light 4 can be provided, for example, with a structure for scattering the light beams 6.
  • this surface can also be satined.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un appareil d'éclairage LED (4), en particulier un lampadaire LED d'éclairage public, comprenant un corps de base (24) et une diode électroluminescente (8) disposée sur le corps de base (24). En outre, un appareil d'éclairage LED (4) selon l'invention présente un recouvrement (12) disposé, en direction du rayonnement (22) de l'appareil d'éclairage LED (4), devant la diode électroluminescente (8), la diode électroluminnescente (8) étant orientée, par rapport au recouvrement (12), de façon que les rayons lumineux (6) frappent, dans un axe de rayonnement principal (26) de la diode électroluminescente (8), ledit recouvrement (12) perpendiculairement ou sensiblement perpendiculairement. L'invention est caractérisée en ce que le recouvrement (12) est profilé de façon que dans au moins une zone (28, 28'), latéralement par rapport à l'axe de rayonnement principal (26) de la diode électroluminescente (8), les rayons lumineux (6) provenant de la diode électroluminescente (8) frappent le recouvrement (12) perpendiculairement ou sensiblement perpendiculairement.
PCT/EP2010/003518 2010-03-30 2010-06-11 Appareil d'éclairage led, en particulier lampadaire led d'éclairage public WO2011120544A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10724714A EP2553321A1 (fr) 2010-03-30 2010-06-11 Appareil d'éclairage led, en particulier lampadaire led d'éclairage public

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010013443.0 2010-03-30
DE102010013443A DE102010013443A1 (de) 2010-03-30 2010-03-30 LED-Leuchte, insbesondere LED-Straßenleuchte

Publications (1)

Publication Number Publication Date
WO2011120544A1 true WO2011120544A1 (fr) 2011-10-06

Family

ID=43216371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/003518 WO2011120544A1 (fr) 2010-03-30 2010-06-11 Appareil d'éclairage led, en particulier lampadaire led d'éclairage public

Country Status (3)

Country Link
EP (1) EP2553321A1 (fr)
DE (1) DE102010013443A1 (fr)
WO (1) WO2011120544A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809477A1 (fr) * 2000-05-24 2001-11-30 Mireille Georges Dispositif d'eclairage par diodes electroluminescentes avec piece optique incorporee
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
EP2058584A1 (fr) * 2007-11-12 2009-05-13 Industrias Derivadas del Aluminio S.L. Appareils d'éclairage à DEL pour éclairer les lieux publics à l'extérieur
FR2935462A3 (fr) * 2008-08-27 2010-03-05 Sensitive Electronic Co Ltd Lampe a diode electroluminescente.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809477A1 (fr) * 2000-05-24 2001-11-30 Mireille Georges Dispositif d'eclairage par diodes electroluminescentes avec piece optique incorporee
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
EP2058584A1 (fr) * 2007-11-12 2009-05-13 Industrias Derivadas del Aluminio S.L. Appareils d'éclairage à DEL pour éclairer les lieux publics à l'extérieur
FR2935462A3 (fr) * 2008-08-27 2010-03-05 Sensitive Electronic Co Ltd Lampe a diode electroluminescente.

Also Published As

Publication number Publication date
EP2553321A1 (fr) 2013-02-06
DE102010013443A1 (de) 2011-10-06

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