EP3699483A1 - Luminaire et support pour une bande lumineuse linéaire - Google Patents

Luminaire et support pour une bande lumineuse linéaire Download PDF

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Publication number
EP3699483A1
EP3699483A1 EP20158543.7A EP20158543A EP3699483A1 EP 3699483 A1 EP3699483 A1 EP 3699483A1 EP 20158543 A EP20158543 A EP 20158543A EP 3699483 A1 EP3699483 A1 EP 3699483A1
Authority
EP
European Patent Office
Prior art keywords
channel
light band
lamp
carrier
linear light
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Withdrawn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
EP20158543.7A
Other languages
German (de)
English (en)
Inventor
Michal Roland
Franz Witthalm
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.)
Bilton International GmbH
Original Assignee
Bilton International 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
Priority claimed from DE102019135284.3A external-priority patent/DE102019135284A1/de
Application filed by Bilton International GmbH filed Critical Bilton International GmbH
Publication of EP3699483A1 publication Critical patent/EP3699483A1/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Withdrawn legal-status Critical Current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
    • 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
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear 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

  • a light in particular a light-emitting diode light, LED light for short, with a channel reflector for the linear light band and a carrier for a linear light band of such a light are described.
  • the luminaire has at least one linear light band, in particular an LED light band.
  • the light band is mounted on a carrier in the luminaire.
  • the carrier has a main surface facing the front of the luminaire and a channel in which the linear light band is mounted.
  • a mounting surface of the carrier in the channel is inclined to the main surface. If in one embodiment the main surface is not continuously flat, then it is closed underneath understand that the mounting surface is inclined to the area of the main surface adjacent to the channel.
  • a mounting surface of the carrier in the channel forms an angle with the main surface of the carrier which is less than or equal to 90 degrees.
  • the linear light band is designed to emit electromagnetic radiation into the channel, i.e. towards the inner surfaces of the channel, when the luminaire is in operation, and the channel is designed as a reflector and is designed to at least absorb the electromagnetic radiation partially reflect towards the front of the lamp.
  • the linear light band is designed and mounted in the channel in such a way that it emits more than 50%, in particular more than 70% of the electromagnetic radiation emitted by the light band during operation of the light band into the channel.
  • the carrier with the at least one channel is made from a metal sheet.
  • the channel has at least one reflective and / or a white and / or a differently colored surface in order to achieve desired reflector properties of the channel.
  • the most varied of channel reflectors can be provided, for example with segmented, parabolic and / or elliptical reflector surfaces.
  • reflector surfaces in the channel have a surface structure, from high-gloss to coarse.
  • reflector surfaces in the channel have an optically effective surface structure.
  • Holographic structures can also be used in the channel to achieve the desired optical properties.
  • the channel is encapsulated (e.g. with PU). This leads to luminaires with particular resistance to moisture or aggressive media.
  • the light parameters of the luminaire can be easily determined by suitable selection of the linear light band. Different light parameters can also be defined in sections in the carrier plate.
  • the radiation characteristics can be easily adapted to varying requirements on the luminaire (see the drawings of FIG Figures 1a to 1c ).
  • Reflective surfaces but also white or other colored surfaces can be used as reflector surfaces.
  • the height of typical LED strips is 6 to 30 mm, in particular between 6 mm and 10 mm, preferably between 7 mm and 9 mm, limit values included in each case.
  • Various lighting distributions can be implemented by different shapes of the channel (see the examples in the below explained in more detail Figures 2a to 2f ). Extremely bright lights can be implemented. Complex shapes such as cross lights and linear lights with integrated "downlights" are possible. For example, it is also possible to directly emit illuminated letters and logos.
  • the various exemplary embodiments shown for a carrier 3 of a luminaire 10 described here are a linear light band 1, here for example an LED light band, mounted in a channel 2 of a carrier plate 3.
  • the channels 2 of the various exemplary embodiments differ in their cross-sections perpendicular to their respective longitudinal direction.
  • the carrier plates 3 each have a main surface 31 which, when the carrier plate 3 is installed in a lamp 10, faces a front side 11 of the lamp 10. In its normal operation, the lamp 10 emits a light desired by the lamp 10 via the front side 11.
  • the carrier plates 3 shown each have a channel 2 with a cross section of a right-angled trapezoid.
  • the right-angled flank 21 of the trapezoid encompasses the mounting surface 4 for the linear light band 1.
  • the carrier plate 3 shown has a channel 2 with a cross section of a parallelogram.
  • the flank 21 of the parallelogram facing away from the main surface 31 comprises the mounting surface 4 for the linear light band 1.
  • the respective mounting surface 4 is transverse to the respective main surface 31 of the carrier plate 3.
  • the mounting surface 4 forms an angle ⁇ of 90 ° with the main surface 31.
  • the mounting surface 4 forms an angle ⁇ with the main surface 31 which is smaller than 90 °.
  • the flank 22 of the respective channel 2 opposite the mounting surface 4 and / or the channel bottom 23 connecting the two flanks 21, 22 of the respective channel 2 are at least partially designed in such a way that a radiation 8 impinging on them from the linear light band 1 can be converted into a desired Redirect the main radiation direction 7 of the lamp 10 (in the Figures 1a to 1c each indicated by the single dashed lines).
  • the flank 21 and / or the channel bottom 23 are / is designed to be at least partially reflective for the radiation 8 to be deflected. This is implemented, for example, by means of a reflective coating of the corresponding inner surfaces of the channel 2 or by forming the carrier plate 3 at least partially with reflective material.
  • the mounting surfaces 4 each close with the main surface 31, here in each case the main extension plane 5 of the carrier plate 3, a right (in the exemplary embodiments of Figures 1a and 1b ) or an acute angle ⁇ (in the embodiment of Figure 1c ) one, in such a way that the optical axes 6 of the linear light strip 1 mounted on the associated mounting surface 4 run parallel to the main extension plane 5 or at an angle to the main extension plane 5, preferably away from a main radiation direction 7 from the carrier plate 3, i.e. the luminaire 10.
  • the carrier plate 3 is, for example, made of a metallic sheet in which a channel 2 as described above is formed, for example by deep drawing.
  • a flank 21 of the channel 2 which is provided as the mounting surface 4 for the linear light band 1, the linear light band 1 is attached, for example, by means of an adhesive layer or by means of an adhesive film that is adhesive on both sides.
  • the carrier plate 3 can alternatively be, for example, a suitably shaped profile, for example an aluminum profile manufactured by means of continuous casting.
  • the carrier plate 3 is each - with the exception of the channel 2 - flat. In other exemplary embodiments, it can be curved, depending on which radiation characteristic is desired from the carrier plate 3.
  • electromagnetic radiation 8 is emitted from the luminaire emission direction 7 away into the channel 2 by the linear light band 1.
  • the respective linear light band 1 each has at least one light band emission direction 9, which points away from the luminaire emission direction 7 into the channel 2.
  • At least one inner surface 22, 23 of the channel 2 is designed to be reflective for radiation 8 emitted by the linear light band 1 when the lamp is in operation.
  • a linear light band 1 is in particular a light emitting diode band (in the following LED band (LED stands for Light Emitting Diode)).
  • LED band in the following LED band (LED stands for Light Emitting Diode)
  • this is in particular an LED strip in which a plurality of LED chips in chip-on-board (COB) technology or a plurality of LED components already provided with an LED housing on an elongated preferably flexible printed circuit board (also called Flex-PCB) are mounted and electrically connected.
  • COB chip-on-board
  • Flex-PCB flexible printed circuit board
  • Such LED components provided with an LED housing are, for example, light-emitting semiconductor bodies provided with a leadframe-based plastic casing (for example PLCC2 SMD LEDs, PLCC4 SMD LEDs or PLCC6 SMD LEDs).
  • the light-emitting semiconductor bodies can be based on inorganic or organic electroluminescent materials.
  • a linear LED light strip for use in a luminaire 10 is for example in the data sheet BLONE1300024DC12000830000W20 (available at https://cdn2.regroshop.at/medias/sys_Regro/sheets/sheets/h03 / hd8 / 9006597767198 / Te-BL124120003020.pdf).
  • This is a top view LED light strip in which the optical emission axes of the LED components mounted on the Flex-PCB run nominally perpendicular to the mounting surface of the Flex-PCB.
  • an at least partially rigid linear LED light band can also be used.
  • the linear light band 1 is designed and mounted in the channel 2 in such a way that it emits more than 50%, in particular more than 70% of the electromagnetic radiation 8 emitted by the light band 1 during operation of the light band 1 into the channel 2.
  • the mounting surface 4 with the main surface 31 as it is in the embodiments of Figures 1a to 1c is the case, includes a right or acute angle ⁇ .
  • the angle ⁇ can then be obtuse, i.e. greater than 90 °.
  • the main surfaces are flat.
  • Modified embodiments of these exemplary embodiments have, for example, a carrier plate 3 with a curved main surface 31, for example with a concave or convex curve or, for example, with concave and convex structures.
  • a different structuring of the main surface 31 is also conceivable.
  • the at least one channel 2 is, for example, potted in a simple manner (e.g. with PU). This leads to luminaires with particular resistance to moisture and / or aggressive media.
  • light parameters of the lamp 10 can be determined easily.
  • different light parameters are defined in sections in the carrier plate 3.
  • reflective surfaces but also white or other colored surfaces are used as reflector surfaces in the at least one channel 2.
  • reflector surfaces for example, by appropriately shaping the geometry of the cross-section of the at least one channel 2 perpendicular to its longitudinal direction and / or coating the channel inner surfaces 22, 23, a wide variety of channel reflectors are provided, for example with segmented, parabolic and / or elliptical reflector surfaces.
  • reflector surfaces of the at least one channel 2 have a surface structure, from high-gloss to coarse.
  • reflector surfaces of the at least one channel 2 have, for example, an optically effective surface structure; for example, holographic structures are used to achieve desired optical properties in the at least one channel 2.
  • the height of typical LED strips as a linear light strip 1 is 6 to 30 mm, in particular between 6 mm and 10 mm, preferably between 7 mm and 9 mm, limit values included in each case.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20158543.7A 2019-02-25 2020-02-20 Luminaire et support pour une bande lumineuse linéaire Withdrawn EP3699483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019104715 2019-02-25
DE102019135284.3A DE102019135284A1 (de) 2019-02-25 2019-12-19 Leuchte und Träger für ein lineares Lichtband

Publications (1)

Publication Number Publication Date
EP3699483A1 true EP3699483A1 (fr) 2020-08-26

Family

ID=69784053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20158543.7A Withdrawn EP3699483A1 (fr) 2019-02-25 2020-02-20 Luminaire et support pour une bande lumineuse linéaire

Country Status (1)

Country Link
EP (1) EP3699483A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2956469A1 (fr) * 2010-02-16 2011-08-19 Ceit Entpr S Dispositif sensiblement plat destine a l'eclairage lumineux
DE102014212438A1 (de) * 2014-06-27 2015-12-31 BSH Hausgeräte GmbH Haushaltskältegerät mit einer Innenraumbeleuchtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2956469A1 (fr) * 2010-02-16 2011-08-19 Ceit Entpr S Dispositif sensiblement plat destine a l'eclairage lumineux
DE102014212438A1 (de) * 2014-06-27 2015-12-31 BSH Hausgeräte GmbH Haushaltskältegerät mit einer Innenraumbeleuchtung

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