EP2947372A1 - Module à del pour dispositif de rayonnement - Google Patents

Module à del pour dispositif de rayonnement Download PDF

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Publication number
EP2947372A1
EP2947372A1 EP15167469.4A EP15167469A EP2947372A1 EP 2947372 A1 EP2947372 A1 EP 2947372A1 EP 15167469 A EP15167469 A EP 15167469A EP 2947372 A1 EP2947372 A1 EP 2947372A1
Authority
EP
European Patent Office
Prior art keywords
led
reflector
radiator according
light
led radiator
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Withdrawn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
EP15167469.4A
Other languages
German (de)
English (en)
Inventor
Stefan Gianordoli
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.)
Tridonic Jennersdorf GmbH
Original Assignee
Tridonic Jennersdorf GmbH
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 Tridonic Jennersdorf GmbH filed Critical Tridonic Jennersdorf GmbH
Publication of EP2947372A1 publication Critical patent/EP2947372A1/fr
Withdrawn legal-status Critical Current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
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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 generally to lighting using LEDs as light-generating elements.
  • An advantageous embodiment is understood on the one hand to mean that the light output emitted by the LED emitter is conducted out of the emitter very efficiently.
  • a high number of identical parts can also be used on the production side for LED emitters with different light output (lumens).
  • the light surface may be at least 30%, preferably at least 50%, even more preferably 55% of the cross-sectional area of the reflector side of the reflector.
  • the lateral surface of the reflector may have a parabolic or a straight course.
  • the surface of the reflector can be made faceted and / or patterned.
  • the total area of the covered LED chips may be at least 20%, preferably at least 25%, more preferably at least 35% of the side of the reflector mounted on the carrier.
  • the LED spotlight can be designed as a so-called ceiling spotlights for installation in suspended ceilings.
  • the LED spotlight may have a housing with a light outlet opening, which is covered or open by a lens (and / or phosphor screen).
  • Each emitter may have an LED module with multiple LED chips, wherein the pitch of the LED chips of a LED module as well as the center distance between LED chips of LED modules of different radiators is preferably constant.
  • the center distance is the distance between the axes of symmetry of two mirror-symmetrical or rotationally symmetrical LED chips.
  • the center distance can be between 1.5 mm and 4 mm, preferably 2.5 to 4 mm.
  • the relatively small chosen center distance between the LED chips serves for improved light output. Due to the small center distance of the LED chips on the LED module, homogeneous white light is emitted by the LED modules or LED spotlights, while the heat dissipation of the LED module remains optimized.
  • the use of metal core boards as a support for the LED module is particularly advantageous.
  • the LED chips can be covered with a dispensten potting compound, such as a so-called dome-shaped globe top or other cover, preferably the globe tops of adjacent LED chips do not run together.
  • a dispensten potting compound such as a so-called dome-shaped globe top or other cover, preferably the globe tops of adjacent LED chips do not run together.
  • Coherent globe tops are also conceivable. In this embodiment, several LEDs sit under a common globe top.
  • the invention particularly relates to a group of similar LED emitters, the group having LED emitters with different light output (lumens). Emitters at least two different light outputs in this case have a different number of LED chips, but carriers (boards) with the same dimensions, which thus ensures an increase in the number of identical parts for LED emitters of different light output.
  • Fig. 1 shows an LED module, ie a plurality of LED chips 1 on a carrier board 2.
  • This LED module 3 in Fig. 1 may for example be provided for a light output of 2000 lumens.
  • Fig. 2 now shows another LED module, for example, for a light output (when installed in an LED spotlight) of 3000 lumens can be dimensioned and accordingly has more LED chips.
  • This LED module 4 has the same board 5, as in Fig. 3 illustrated LED module 6 for a light output of, for example, 4000 lumens, which thus has a respect to the dimensions and the mounting holes 8 similar board.
  • a further standardization can take place in that the distance of the light points, ie the centers of the LED chips 1 in all LED modules 3, 5, 6 of FIGS. 1, 2 and 3 is identical.
  • the distance between the center points is the distance between the axes of symmetry of two mirror-symmetrical or rotationally symmetrical LED chips.
  • the distance between the points of light can be, for example, between 2 and 4 mm, preferably between 3.2 and 3.8 mm.
  • this distance of the light spots can be selected to be identical for the LED modules of different powers, which in turn can lead to standardization possibilities (use of identical parts) with regard to the downstream optics (reflector, diffuser screen, phosphor screen), which will be described below with reference to FIG Fig. 4 will be explained.
  • FIGS. 1, 2, 3 shown LED module, now designated by reference numeral 10, incorporated in an LED spotlight, which can be used for example as ceiling spotlights ("downlight”) or spot (“Spotlight”).
  • This spotlight in Fig. 4 generally designated 11, has, for example, a bottom-side housing with heat sink 12 on which the LED module 10 is mounted in thermal contact.
  • the bottom housing part 12 is at least substantially made of highly thermally conductive material, in particular made of metal.
  • a reflector 12 is preferably placed in direct contact, which is preferably designed such that the the LEDs facing the open side 13 of the reflector has a smaller cross-sectional area than the side facing away from the LEDs outlet side 14 of the reflector 12. So there is an expanding in the light emission direction reflector.
  • the reflector is preferably rotationally symmetrical.
  • the contours (generatrix) of the reflector 12 can be rectilinear, resulting in a truncated cone shape.
  • other courses in particular curved courses such as parabolic courses for the contour of the lateral surface 15 of the reflector 12 are conceivable.
  • a top 20 and a cover 21 are placed with a central preferably circular opening 22 on the bottom part 12 of the housing.
  • a diffusing screen (not shown) are used, which can optionally also fulfill other optical functions in addition to their diffuser effect.
  • a color conversion medium may also be used in the diffuser to change wavelength (e.g., in the form of a phosphor screen).
  • the phosphor screen can also be used without scattering particles in the LED spotlight.
  • the use of the phosphor discs and / or lenses with patterned surfaces is also conceivable.
  • a color conversion medium e.g., inorganic and organic phosphors 30 is applied in the form of a so-called globe top or otherwise in direct contact with the respective LED chip to produce white light.
  • a phosphor screen in combination with a white reflector (which forms a highly reflective surface) is particularly preferred when the LED module 10 LEDs different spectrum, such as monochromatic LEDs, especially red LEDs, in addition to a preferably phosphor converted, for example, blue or UV LED (which emits white light, for example) or to another monochromatic example, blue or green LED.
  • the phosphor-converted LEDs can emit green, white or red light, for example.
  • the highly reflecting surface reflector 12 (e.g., white surface) provides good light mixing so that the space defined by the reflector 12 may also be referred to as a light mixing chamber within the LED radiator. Homogeneous white light is generated from the monochromatic or from the monochromatic and fluorescent-converted light-emitting diodes with the aid of the light mixing chamber.
  • An additional reflector (not shown), which can be placed on the LED spotlight 11, is also conceivable. Through this additional reflector, a multi-stage optical system can be realized with targeted light control.
  • the reflector 12 may be made of a coated plastic, a metal such as aluminum, etc.
  • the reflector made of metal in conjunction with a lens is preferred for the embodiments in which mainly phosphor converted LEDs are processed.
  • the light control can be controlled arbitrarily without the use of a multi-stage optical system.
  • the reflector can be made faceted like the example of FIG. 5 shows.
  • the in Fig. 4 illustrated LED spotlight 11 is used in particular as a replacement of existing spotlights with conventional bulbs, which thus use a halogen or a xenon lamp as the light source.
  • This embodiment is commonly referred to as a "retrofit”.
  • the diameter of the reflector 12 is matched to the outer contour of the light field formed by the LEDs on the module 10. For a smaller light field such as in Fig. 1 Thus, a smaller reflector can be selected than with a larger light field as in FIGS. 2, 3 shown.
  • the principle according to the invention is pursued that the LEDs facing the opening side 13 of the reflector 12, the active light field (outer contour of the LEDs on the LED module 10) as closely as possible enclosing what the efficiency (light output per electrical power in watts) of the imaged LED Spotlight 11 increased. Since the distance between the points of light, as stated at the outset, is chosen to be as small as possible, the area of the entrance side 13 of the expanding reflector 12 can thus also be kept as small as possible.
  • the active light field is formed by discrete points of light (spaced-apart LED chips with separate coating in the form of globe tops), the "filling level" of the light field, ie the total area of the globe tops is as high as possible in relation to the surface formed by the outer contour of the light field.
  • the degree of filling of the light field is preferably at least 15%, preferably 20%, even more preferably 35%.
  • the area of the outer contour of the light field is at least 30%, preferably 50%, more preferably 55% of the area the input side 13 of the expanding reflector 12th
  • the outside of the example made of plastic (with high thermal conductivity) manufactured upper part 20 of the housing of the LED radiator 11 may be profiled to form cooling fins 25th
  • These cooling fins may (see reference numeral 26) also extend beyond the cover part 21 away.

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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP15167469.4A 2010-04-09 2011-04-08 Module à del pour dispositif de rayonnement Withdrawn EP2947372A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202010004857 2010-04-09
DE202010007032U DE202010007032U1 (de) 2010-04-09 2010-05-20 LED-Modul für Strahler
EP11713490A EP2494264A2 (fr) 2010-04-09 2011-04-08 Module de led pour des spots

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP11713490A Division EP2494264A2 (fr) 2010-04-09 2011-04-08 Module de led pour des spots

Publications (1)

Publication Number Publication Date
EP2947372A1 true EP2947372A1 (fr) 2015-11-25

Family

ID=44586325

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15167469.4A Withdrawn EP2947372A1 (fr) 2010-04-09 2011-04-08 Module à del pour dispositif de rayonnement
EP11713490A Withdrawn EP2494264A2 (fr) 2010-04-09 2011-04-08 Module de led pour des spots

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11713490A Withdrawn EP2494264A2 (fr) 2010-04-09 2011-04-08 Module de led pour des spots

Country Status (6)

Country Link
US (1) US8960952B2 (fr)
EP (2) EP2947372A1 (fr)
CN (1) CN102667316B (fr)
DE (1) DE202010007032U1 (fr)
TW (1) TWI480488B (fr)
WO (1) WO2011124666A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20110442A1 (it) * 2011-08-12 2013-02-13 Sisti Fabio De Sistema ottico per proiettori di luce a led con lente di fresnel o piano convessa, in particolare per illuminazione scenotecnica.
US20130200795A1 (en) * 2012-02-03 2013-08-08 Michael L. Clark Followspot and method for retrofitting a followspot
DE102012202927B4 (de) * 2012-02-27 2021-06-10 Osram Gmbh Lichtquelle mit led-chip und leuchtstoffschicht
DE102012011635A1 (de) * 2012-06-12 2013-12-12 Bartenbach Holding Gmbh Leuchte und Verfahren zu ihrer Herstellung
CN104806899B (zh) * 2014-01-29 2017-09-01 敦网光电股份有限公司 板形灯具组件
CN105225628B (zh) * 2014-06-19 2017-10-24 元太科技工业股份有限公司 显示装置、显示模块及其像素结构

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WO2009025284A1 (fr) * 2007-08-22 2009-02-26 Tokai Optical Co., Ltd. Dispositif d'éclairage
US20090103296A1 (en) * 2007-10-17 2009-04-23 Xicato, Inc. Illumination Device with Light Emitting Diodes
US20090140285A1 (en) * 2007-11-30 2009-06-04 Advanced Connectek Inc. Light emitting device having function of heat-dissipation and manufacturing process for such device
US20090283779A1 (en) * 2007-06-14 2009-11-19 Cree, Inc. Light source with near field mixing
US20090323304A1 (en) * 2008-06-30 2009-12-31 Rene Helbing Light emitting device having a phosphor layer
GB2463057A (en) * 2008-08-30 2010-03-03 Design 360 Ltd Light emitting diode lighting housing comprising a reflector and heat sink

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US20030156416A1 (en) * 2002-02-21 2003-08-21 Whelen Engineering Company, Inc. Led light assembly
US20090283779A1 (en) * 2007-06-14 2009-11-19 Cree, Inc. Light source with near field mixing
WO2009025284A1 (fr) * 2007-08-22 2009-02-26 Tokai Optical Co., Ltd. Dispositif d'éclairage
US20090103296A1 (en) * 2007-10-17 2009-04-23 Xicato, Inc. Illumination Device with Light Emitting Diodes
US20090140285A1 (en) * 2007-11-30 2009-06-04 Advanced Connectek Inc. Light emitting device having function of heat-dissipation and manufacturing process for such device
US20090323304A1 (en) * 2008-06-30 2009-12-31 Rene Helbing Light emitting device having a phosphor layer
GB2463057A (en) * 2008-08-30 2010-03-03 Design 360 Ltd Light emitting diode lighting housing comprising a reflector and heat sink

Also Published As

Publication number Publication date
WO2011124666A2 (fr) 2011-10-13
TW201219706A (en) 2012-05-16
TWI480488B (zh) 2015-04-11
DE202010007032U1 (de) 2011-08-09
CN102667316A (zh) 2012-09-12
US20130016505A1 (en) 2013-01-17
CN102667316B (zh) 2016-05-18
US8960952B2 (en) 2015-02-24
WO2011124666A3 (fr) 2012-02-02
EP2494264A2 (fr) 2012-09-05

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