EP2944869B1 - Lampe à del - Google Patents

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Publication number
EP2944869B1
EP2944869B1 EP15166360.6A EP15166360A EP2944869B1 EP 2944869 B1 EP2944869 B1 EP 2944869B1 EP 15166360 A EP15166360 A EP 15166360A EP 2944869 B1 EP2944869 B1 EP 2944869B1
Authority
EP
European Patent Office
Prior art keywords
housing
luminaire
leds
luminaire according
projections
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.)
Active
Application number
EP15166360.6A
Other languages
German (de)
English (en)
Other versions
EP2944869A1 (fr
Inventor
Peter Schröcker
Zaki Wimmer
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.)
Osram SBT GmbH
Original Assignee
Siteco Beleuchtungstechnik 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 Siteco Beleuchtungstechnik GmbH filed Critical Siteco Beleuchtungstechnik GmbH
Publication of EP2944869A1 publication Critical patent/EP2944869A1/fr
Application granted granted Critical
Publication of EP2944869B1 publication Critical patent/EP2944869B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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 invention relates to a. Luminaire according to claim 1, in particular an interior or exterior luminaire for mounting on a wall or a ceiling, with light-emitting diodes (LEDs), which are to be understood as organic light-emitting diodes (OLEDs), as a lighting means.
  • LEDs light-emitting diodes
  • OLEDs organic light-emitting diodes
  • Luminaires of the type mentioned are, for example, in the DE 20 2008 007 211 U1 described.
  • the luminaire housing is formed from a U-shaped profile element whose light exit opening is closed by a light exit element.
  • the profile element has inwardly projecting frame elements for receiving a seal and the light exit element.
  • a similar LED lamp with an aluminum profile as housing is in the DE 20 2011 108 542 U1 described.
  • the LEDs are arranged with a board on the bottom of an approximately U-shaped housing profile. On the back of the housing opposite the LEDs, cooling fins are formed.
  • US 2013/083522 A1 discloses a luminaire with LEDs.
  • the luminaire includes a body of extruded aluminum profiles.
  • the body is provided on the front side with approximately T-shaped covers. LEDs are attached to sides of the extruded profiles.
  • EP 2 280 213 A2 discloses a lighting device having a plurality of LEDs.
  • a housing includes one or more floor panels and side walls that are substantially vertical to the floor panel (s). The LEDs are arranged on the bottom plate.
  • US 2012/033400 A1 discloses a dimmable LED light with an emergency ballast for car parking areas.
  • the luminaire includes a semi-concave shell, which has an inverted U-shape for receiving power sources and the emergency ballast. Furthermore, a cover fastened with clips is provided.
  • WO 2015/031322 A1 discloses a lighting device having a plurality of light sources and a plurality of lenses for influencing the light of the light sources.
  • the case is through Profile element formed, wherein means for power supply are arranged in a central recess of the profile element.
  • the object of the invention is to develop a luminaire of the type mentioned in terms of the specifics of LEDs as bulbs, in particular for the cooling of these.
  • a luminaire has a luminaire housing, which is formed from a longitudinally extending profile element, wherein the profile element is formed in a cross section perpendicular to the longitudinal extent of the housing approximately T-shaped, wherein the lateral projections the T-shape serve as support surfaces for the LEDs in each case on a side of the housing facing towards a light exit surface of the housing and a space is formed centrally between the projections, in which operating means are arranged on the side opposite the light exit surface.
  • the package shape according to the present invention has been optimized for the use of LEDs.
  • a T-shape was used.
  • the wide cantilevers of the T-shape provide a larger surface area to the outside as compared to a compact housing.
  • the LEDs are supported on the support surface of the projections so that they are also in good thermal contact with the enlarged outer surface portions.
  • the width of the projections can be between 15% and 40% of the total width of the luminaire.
  • the profile element is made of metal, in particular aluminum.
  • Metals, in particular aluminum have a high thermal conductivity, so that in the region of the projections the heat generated by the operation of the LEDs can be dissipated to the outside.
  • the housing profile can be formed, for example, as an extruded profile or by a die-cast element. It is also possible that only parts of the profile are made of metal, in particular those parts of the profile which are in contact with the LEDs, i. the projections, made of metal or aluminum are formed.
  • cooling fins may be integrated in the profile.
  • the cooling ribs are preferably arranged on the outside of the projections facing away from the light exit surface. This position of the cooling fins is preferred because it is on the one hand relatively close to the LEDs and on the other hand, in contrast to the bottom surface of the lamp, which is usually attached to a wall or ceiling, in the free air flow of the ambient air.
  • the projections are optionally arranged with the cooling fins mirror-symmetrical to the longitudinal center plane of the lamp (ie, a longitudinal cross section centrally through the lamp perpendicular to the light exit surface).
  • This shape provides the largest possible surface area for both housing sides serving as a support surface for the LED.
  • it would also be conceivable to make the T-shape of the housing somewhat asymmetrical for example, one projection can amount to 10% to 20% of the total width, while the other projection accounts for between 20% and 40% of the total width of the lamp).
  • the housing shape deviates somewhat in cross section from the symmetry of a T.
  • both protrusions form approximately the shape of a Ts in order to ensure the housing shape optimized according to the present invention for cooling the LEDs.
  • the LEDs are arranged on one or more boards.
  • the board (s) is / are mounted in thermal contact with the LED support surfaces.
  • the board can rest directly on the housing side of the projections, wherein, if necessary, provided with a circuit board with conductor tracks on both sides of an insulating layer to the housing profile formed of metal. It is also considered to provide a thermal grease between the boards and the housing to improve the thermal contact.
  • the LEDs may be limited to the area of the LED support surfaces, the sides of the projections.
  • the luminaire forms two separate luminous surfaces on both longitudinal sides of the luminaire.
  • the light can emit light over the entire width of the light exit surface.
  • the light exit side is closed with a transparent cover.
  • the cover can be clearly transparent.
  • a light-scattering e.g. a frosted disc or a pane occupied with prisms, to de-illuminate the lamp or to even out the light of the LEDs, which are visible as a bright point-shaped bulbs, over the light exit surface.
  • the transparent cover is sealed with a circumferential seal against the housing profile.
  • the seal may be used as a separate component, e.g. made of silicone or a foam, be inserted or may alternatively be glued to the housing or with the transparent cover.
  • the cover may, according to one embodiment, be held to the housing with clips which laterally grip over the projection to clamp the cover. This is a particularly simple way to secure the cover and also offers the advantage that, in contrast to gluing or the like. The cover can also be easily detached from the housing again.
  • the end faces of the housing are closed with side covers, preferably with an inserted or injected, e.g. foamed, seal against the housing profile to be sealed.
  • the side covers may e.g. screwed or attached.
  • the seal for the side covers directly against the seal for the transparent cover, so that the cover and the side covers close the housing completely sealed.
  • the seals may be designed in particular for moisture or splash-proof housing.
  • a gas-tight seal may also be provided to prevent the penetration of explosive gases into the luminaire housing.
  • the side covers may have cable glands on one or both sides of the luminaire.
  • the cable bushings may also be formed moisture and / or gas-tight. According to a preferred embodiment, cable penetrations are provided on both sides of the luminaire. As a result, several luminaires can be electrically supplied one behind the other with feedthrough cabling. As a single light, however, a cable bushing in only one of the two side cover is possible.
  • operating means for the luminaire are arranged in the receiving space of the luminaire.
  • ballasts for the LEDs can be provided in this receiving space.
  • Other electronic control devices are also possible.
  • further light sources in this area. For example, spotlights or warning lights can be arranged in this area, which can optionally also emit colored light and generate light in addition to the LEDs on the LED support surfaces of the projections.
  • the lamp in the illustrated embodiment has a lamp housing made of a profile element 2, which is formed in this example of an aluminum extruded profile.
  • the profile element 2 has a longitudinal extension and the cross section of the profile in the plane perpendicular to the longitudinal axis of the lamp remains constant over the length. This makes the profile particularly easy to produce.
  • the profile element 2 is formed of aluminum, so that a good thermal conductivity is given.
  • the profile element 2 has in cross section perpendicular to the lamp about a T-shape (see, eg FIGS. 4 and 5 ), wherein the T-shape in the central region defines an approximately rectangular box, which serves as a receiving space 4 for equipment 6 of the lamp.
  • a receiving space 4 for equipment 6 of the lamp For example, 4 protrusions may be provided on the profile element 2 in the interior of the receiving space to attach resources 6 thereto.
  • FIG. 2 are electrical equipment 6 shown in the receiving space 4, while in the other figures, the resources are not shown.
  • the T-shape of the profile element further has two projections 8, which are respectively formed on the side facing the light exit surface of the lamp as support surfaces 10 for LEDs (the LEDs are not shown in the figures).
  • the width of the projections 8 is in the illustrated example about 25% of the total width of the lamp housing. As a result, a larger surface is formed compared to a box-shaped housing, which is advantageous for cooling with the ambient air.
  • cooling fins 12 which extend in the longitudinal direction of the lamp.
  • the cooling fins are integrated in the profile element 2 and extend over the entire length of the luminaire, so that the profile element can be produced with a constant cross section.
  • the lamp On the opposite side of the LED support surfaces 10, the lamp is closed with a transparent cover 14.
  • the cover 14 is provided with a circumferential seal 16 (see FIG. 2 in exploded view) sealed in a groove on the outer edges of the projections 8.
  • the seal 16 also extends over the end faces of the lamp.
  • the seal 16 may, as in the example of FIG. 2 is shown, be loosely inserted. However, it is also conceivable to connect the seal firmly to the housing 2 and / or the cover 14.
  • brackets 18 which engage on the underside of the lamp on the projection 8 and on the top of the lamp on the transparent cover 14.
  • the clip elements are approximately U-shaped in cross section, wherein the two legs of the US can be elastically deflected against each other to apply the necessary clamping force to hold the cover 14 with the seal 16 on the projection 8.
  • the front side of the lamp with side covers 20 is closed.
  • the side covers 20 have a T-shaped surface corresponding to the cross-section of the profile to close the profile at the end faces.
  • Within the side cover 20 is in the illustrated embodiment (see in particular FIG. 2 ) provided a cutout which is closed with a further cover 22.
  • Within the cover 22, two cable bushings 24 are provided, to connect the electrical equipment 6 of the lamp electrically.
  • the cable glands can be provided on both ends of the lamp or, as in the FIG. 3 shown, only be present on one side of the lamp.
  • the side covers 20 are sealed with a seal 28 to the end faces of the profile element 4.
  • the groove on the longitudinal sides of the profiled element 2, in which the seal 16 is inserted, continues in the side covers 20, so that the seal 16 seals the luminaire housing over the entire circumference of the transparent cover 18.
  • the seal 28 of the side cover 20 adjoins the peripheral seal 16 in order to completely seal the housing.
  • bracket 26 are provided on the side covers 20 of the opposite side of the light exit surface side. These brackets 26 serve to mount the light on a wall or ceiling.
  • the lamp described above is particularly suitable for outdoor use.
  • a preferred application of this type of lights is a tunnel light.
  • Several luminaires are mounted one behind the other along the tunnel ceiling or the tunnel walls.
  • the energy-saving lamps in the form of LEDs are beneficial.
  • sufficient ventilation is given to this site in order to ensure the necessary cooling for the LEDs in conjunction with the inventively optimized housing shape.
  • Another preferred application of this type of luminaires is an indoor luminaire for illuminating large halls.
  • the shape of the housing need not be exactly symmetrical as long as a T-shape with two projections is formed. Further, the ratio between the width of the receiving space 4 to the width of the projections 8 may vary.

Landscapes

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

Claims (12)

  1. Luminaire avec des LED en tant que moyen d'éclairage, le luminaire comportant un boîtier de luminaire qui est formé d'un élément profilé (2) s'étendant en longueur,
    l'élément profilé (2) étant formé avec une section transversale à peu près en forme de T perpendiculairement à l'étendue longitudinale du boîtier, les saillies (8) latérales de la forme en T servant respectivement de surfaces de support (10) pour les LED sur un côté du boîtier dirigé vers une surface de sortie de lumière du luminaire, caractérisé en ce que, de façon centrée entre les saillies (8), il est formé un espace (4) dans lequel des moyens de fonctionnement (6) sont disposés sur le côté opposé à la surface de sortie de lumière.
  2. Luminaire selon la revendication 1, l'élément profilé (2) étant formé de métal, en particulier d'aluminium, en tant que profilé extrudé ou en tant qu'élément moulé sous pression.
  3. Luminaire selon la revendication 1 ou 2, des ailettes de refroidissement (12) étant intégrées sur l'élément profilé (2) au niveau des saillies (8) sur le côté extérieur éloigné de la surface de sortie de lumière.
  4. Luminaire selon l'une des revendications précédentes, les deux saillies (8), éventuellement en référence à la revendication 3, avec les ailettes de refroidissement (12) étant constituées avec une symétrie spéculaire par rapport au plan médian longitudinal.
  5. Luminaire selon l'une des revendications précédentes, les LED étant disposées sur au moins une platine qui est montée sur les surfaces de support de LED (10) en contact thermique avec celles-ci.
  6. Luminaire selon l'une des revendications précédentes, les LED étant limitées à la zone des saillies (8), ou l'espace de réception (4) entre les saillies (8) étant enjambé au moins partiellement par une platine de LED.
  7. Luminaire selon l'une des revendications précédentes, le côté de sortie de lumière du boîtier étant fermé par un recouvrement (14) transparent qui est de préférence rendu étanche vis-à-vis du boîtier avec un joint d'étanchéité (16) périphérique.
  8. Luminaire selon la revendication 7, le recouvrement (14) transparent étant coincé avec des crampons (8) qui entourent latéralement la saillie (8).
  9. Luminaire selon l'une des revendications précédentes, les côtés frontaux de l'élément profilé (2) du boîtier étant fermés par des couvercles latéraux (20) et étant de préférence rendus étanches contre l'élément profilé (2) au moyen d'un joint d'étanchéité (28) inséré.
  10. Luminaire selon la revendication 9, l'un des couvercles latéraux (20) ou les deux comportant des passages de câble.
  11. Luminaire selon la revendication 9 ou 10, des moyens de retenue (26), en particulier des cornières de retenue, étant mis en place au niveau des couvercles latéraux pour la fixation du luminaire sur une paroi ou un plafond.
  12. Luminaire selon l'une des revendications précédentes, les moyens de fonctionnement (6) comprenant un ballast destiné au fonctionnement des LED.
EP15166360.6A 2014-05-12 2015-05-05 Lampe à del Active EP2944869B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014106601.4A DE102014106601A1 (de) 2014-05-12 2014-05-12 LED-Leuchte

Publications (2)

Publication Number Publication Date
EP2944869A1 EP2944869A1 (fr) 2015-11-18
EP2944869B1 true EP2944869B1 (fr) 2019-04-10

Family

ID=53059002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15166360.6A Active EP2944869B1 (fr) 2014-05-12 2015-05-05 Lampe à del

Country Status (2)

Country Link
EP (1) EP2944869B1 (fr)
DE (1) DE102014106601A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008007211U1 (de) 2008-05-29 2009-10-08 Ledon Lighting Gmbh Leuchtengehäuse, insbesondere für eine LED-Leuchte, mit Dichtungselement
EP2280213B1 (fr) * 2009-07-28 2016-04-06 LG Innotek Co., Ltd. Dispositif d'éclairage
MX2010008576A (es) * 2010-08-04 2012-02-20 Servicios Condumex Sa Luminaria de diodos emisores de luz de alta intensidad atenuable con balastro de emergencia para estacionamientos o areas cubiertas.
DE112011102779A5 (de) 2010-08-25 2013-06-13 "Steinberg" Leuchtmittelwerke Gmbh Leuchte, insbesondere Wand- und/oder Deckenleuchte
US20130083522A1 (en) * 2011-10-03 2013-04-04 Mark Turner Bowers Light Fixture Using Light Emitting Diodes
WO2015031322A1 (fr) * 2013-08-26 2015-03-05 Delta T Corporation Appareil d'éclairage accordable et procédés associés de commande du flux lumineux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102014106601A1 (de) 2015-11-12
EP2944869A1 (fr) 2015-11-18

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