EP3477192A1 - Couvercle pour un module lumineux, module lumineux et luminaire - Google Patents

Couvercle pour un module lumineux, module lumineux et luminaire Download PDF

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Publication number
EP3477192A1
EP3477192A1 EP18202639.3A EP18202639A EP3477192A1 EP 3477192 A1 EP3477192 A1 EP 3477192A1 EP 18202639 A EP18202639 A EP 18202639A EP 3477192 A1 EP3477192 A1 EP 3477192A1
Authority
EP
European Patent Office
Prior art keywords
light
cover
region
structuring
emitting diodes
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.)
Granted
Application number
EP18202639.3A
Other languages
German (de)
English (en)
Other versions
EP3477192C0 (fr
EP3477192B1 (fr
Inventor
Konstantin Engeter
Tobias Hösle
Stephan Lukanow
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.)
Siteco 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 EP3477192A1 publication Critical patent/EP3477192A1/fr
Application granted granted Critical
Publication of EP3477192C0 publication Critical patent/EP3477192C0/fr
Publication of EP3477192B1 publication Critical patent/EP3477192B1/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
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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 cover for a light module and a light module are specified.
  • the publication WO 2015/162196 A1 describes a cover for a light module and a light module.
  • An object to be solved is to provide a cover for a light module, which is particularly versatile.
  • Another object to be solved is to provide a light module with such a cover.
  • a cover for a light module is specified.
  • the cover is a translucent body that may have optical properties. That is, the cover may be provided to optically influence, for example at least partially, divert and / or bundle and / or scatter transmitted light.
  • the cover is designed as a cover for a light module.
  • the light module comprises, for example, a plurality of light sources, to which the cover is arranged downstream in the emission direction of the light sources.
  • the cover comprises a central region and an edge region, which adjoins the central region. That is, the cover can be at least thoughtfully divided into at least two areas - the central area and the Border area.
  • the cover can be formed integrally, that is, the central region and the edge region are then formed integrally with each other and contain the same material or consist of the same material.
  • the middle region and the edge region of the cover may differ from one another, for example, due to different optical properties.
  • the edge and middle regions of the cover can have different shapes.
  • the central region may be curved in a plan view, for example round or oval, and for the edge region to extend completely around the middle region.
  • the edge area then forms, for example, a ring around the central area.
  • the central region is rectangular in a plan view.
  • the cover may then comprise, for example, two edge regions, which extend on both sides from the middle region along a main extension direction of the central region.
  • the central region is annular in a plan view and an edge region extends annularly on the outer side of the middle region and a further edge region extends annularly on the inner side of the central region.
  • the cover is designed to be translucent.
  • the cover is formed with a translucent material.
  • the cover comprises a transparent matrix material which may be filled with further substances, for example light-scattering and / or light-reflecting particles, dyes, pigments or conversion substances.
  • the matrix material is unfilled.
  • the matrix material comprises a glass or a plastic material such as PMMA.
  • the edge region has a structuring on an outer side, in particular a light entry side, of the cover.
  • the light entry side of the cover is that side which, in use of the cover in a light module, faces the at least one light source of the light module. That is, the light generated in operation in the light module enters at the light entrance side of the cover in this and leaves the cover at least partially on a side facing away from the light entrance side light exit side of the cover.
  • the edge region has a structuring at least on the light entry side.
  • the edge region may have a structuring on a light exit side facing away from the light entry side.
  • the structuring may include, for example, elevations and indentations in the material of the cover.
  • the structuring may be in the form of lamellae, grooves and / or prisms, which may be wave-shaped or serrated in a cross-section through the cover.
  • the structuring in the edge region in this case has feature sizes that are large in relation to the wavelength of the light that enters the cover at the light entry side.
  • a feature size is a width, a length, or a distance between two elements of the texture.
  • the structure sizes are at least 1 mm, in particular at least 2 mm, in particular at least 4 mm.
  • the structuring is designed to reduce the angle between the direction of the incident light and a perpendicular to a main plane of extension of the central region for the light emitted by the edge region.
  • the edge region emits the light, for example, by reflection, scattering and / or refraction of the light striking the structuring.
  • the central region of the cover has a main extension plane, which may extend at least in places parallel to a cover surface of the central region arranged on the light exit side.
  • the perpendicular to the main extension plane of the central region may for example be a perpendicular to the central region, provided that it is smooth and unstructured on its outer surface.
  • the structuring may in particular be designed to direct incident light in the direction of the central region. That is, when passing through the cover in the region of structuring, light is deflected in such a way that the direction of a light beam path of the light changes in the direction of the central region. That is, due to the structuring, a greater proportion of the transmitted light is deflected towards the central region than would be the case without the structuring.
  • the edge area now ensures that light passing through it is directed at least in part in the direction of the vertical or a perpendicular plane which is perpendicular to the main extension plane.
  • the structured edge region therefore provides for a reduction of the lateral light emission in that the angle between the direction of the incident light and the perpendicular to the main extension plane of the central region is reduced for the light emitted from the edge region light.
  • a cover for a light module having a central region and an edge region, wherein the edge region adjoins the central region, the cover is translucent, the edge region has a structuring on a light entrance side, and the structuring is designed to form the angle between the direction of the incident light and a normal to a principal plane of extension of the central region for the light emitted from the edge region.
  • Illuminating modules which include, for example, light-emitting diodes as light sources, can be made available in different luminous flux packages.
  • the light sources can be dimmed, for example. If required for higher luminous flux packets, with larger luminous flux, the light sources can be energized for example stronger.
  • the light sources such as modules with light emitting diodes, can be replaced. These can be replaced by modules with a larger number of LEDs.
  • the cover described here is based, inter alia, on the idea that due to the edge region, which has a structuring on a light entry side of the cover, which is designed to direct incident light in the direction of the central region, a different population of the lighting module with a different number of LEDs is possible, without changing a luminous intensity distribution curve of the light emitted by the light module in operation light too strong.
  • the cover forms part of a two-part optic. That is, the primary sources may be arranged downstream of the light sources, which are irradiated by the light of the light sources. The light influenced by the primary optic elements then strikes the cover, which then forms a secondary optical element. Replacing the cover at different Equipping the light module with a different number of light emitting diodes is then no longer necessary. Furthermore, the use of the same primary optics element is possible with different equipment.
  • the structuring is designed to direct the incident light by refraction and / or total reflection. That is to say, the structuring is designed to optically influence the transmitted light, wherein the structuring may comprise structures which are designed to refract light, and / or structures which are designed to be totally reflected. Furthermore, individual structures for refraction and total reflection of the light can be formed.
  • the edge region has a width and the middle region has a width, wherein the width of the edge region is at most 20% of the width of the middle region.
  • the width is measured, for example, transversely or perpendicular to a main extension direction of the respective area.
  • the proportion of the peripheral area on the cover is relatively small compared to the central area.
  • the central area also has a larger area measured in a main extension plane of the central area than the area of the edge area in a main extension plane of the edge area. This makes it possible that a large proportion of the cover, namely the central region, is available for further optical influencing of the transmitted light.
  • a further structuring may be present, which is designed to optically influence the transmitted light.
  • the edge region is bent relative to the central region in the direction of the light entry side. That is, in this embodiment, the peripheral portion and the central portion are not disposed in a common plane, but the peripheral portion is angled toward the light entrance side opposite to the central portion. This can further enhance the light-directing effect of the edge region in the direction of the central region.
  • the structuring in the edge region can then be carried out, for example, with smaller structure sizes or with fewer structures than would be the case if the edge region is not bent.
  • the edge region and the central region include, for example, an angle of at least 30 ° and at most 70 ° with each other.
  • the structuring of the edge region comprises prongs in a material of the cover, wherein the prongs extend in places in the direction of the central region. That is, the structuring includes structures that are serrated in cross-section and may extend, for example, as lamellae along the entire edge region.
  • the spikes have a base where they are widest and a spike. The tines can be bent from the base towards the tips towards the middle region. This supports the optical effect of the structuring in the deflection of the incident light in the direction of the central region.
  • Each structuring may include, for example, three or more prongs.
  • the spikes may differ in their size, for example in their cross-sectional area or in terms of the volume of the slats, from each other and be geometrically similar to each other, for example.
  • the Structuring can be formed, for example, a sawtooth in cross section.
  • the cover is formed smooth on a light exit side. That is, the cover does not comprise any, for example optical, structuring on a light exit surface. Furthermore, the cover on the light exit side does not include any larger recesses, such as a trench-shaped recess. Because of the smooth light exit side, the cover is particularly easy to maintain and can be easily removed, for example by wiping off dirt and dust.
  • the central region has a structuring on the light entry side.
  • the structuring may be, for example, an optical structuring.
  • the structuring on the light entry side in the region of the central region can serve inter alia to avoid direct images of the light sources of the light module at the light exit surface, and to improve the luminance on the cover.
  • the cover comprises two edge regions, which are arranged on opposite sides of the central region.
  • the central region may in this case be rectangular and oblong or annular, for example.
  • the edge regions laterally delimit the middle region and in each case deflect light in the direction of the middle region.
  • the edge regions can be designed similarly, for example. For example, they may be formed symmetrical to each other with respect to a longitudinal center plane through the center region.
  • the light module may include a cover described here. That is, all features disclosed for the cover are also disclosed for the light module and vice versa.
  • the lighting module comprises a multiplicity of light-emitting diodes which are designed to emit light.
  • the light-emitting diodes are, for example, light-emitting diodes which emit colored or, in particular, white light during operation.
  • the lighting module comprises a plurality of primary optics elements, wherein each light-emitting diode is arranged downstream of a primary optics element.
  • the primary optics element is designed to optically influence, for example to collect or scatter, the light emitted by the associated light-emitting diode.
  • the primary optic element is formed with a translucent material.
  • the primary optic element comprises a transparent matrix material which may be filled with further substances, for example light-scattering and / or light-reflecting particles, dyes, pigments or conversion substances.
  • the matrix material is unfilled.
  • the matrix material comprises a glass or a plastic material such as PMMA.
  • a plurality of light-emitting diodes can be associated with one primary optic element, that is to say that two or more light-emitting diodes can be assigned to one primary optic element, for example.
  • a light module described here comprises a cover described here, which is arranged on the side remote from the primary optics elements side of the LEDs.
  • the lighting module comprises a two-part optics, wherein the cover forms the secondary optics, which in particular is irradiated only by light which has already transmitted through a primary optic element.
  • the lighting module is based on the following considerations: If, for example, the lighting module is equipped with light-emitting diodes such that two or more light-emitting diodes are arranged adjacent to one another instead of one light-emitting diode, the magnification of the primary primary element increases when the same primary optics element is used Light emitting surface of the beam angle range of the primary optic element. In this way, not only the central region of the cover is illuminated, but light also strikes the edge region of the cover. The enlargement of the emission area of the primary optic element can now be compensated for by the cover described here and the deflection of light in the direction of the central area, so that the luminous intensity distribution curves for luminous modules with different configurations differ only slightly from one another.
  • each primary optical element is arranged downstream of a group of one, two or three light-emitting diodes. That is, even with a different placement of the light module with a different number of light emitting diodes, the same Primary optic element can be used.
  • the groups of light emitting diodes form the light sources of the light module.
  • each primary optical element is part of a lens cover, wherein the primary optics elements of a lens cover are formed integrally with one another.
  • the primary optics elements of the light module can be combined to form a lens cover in which they are integrally connected to one another.
  • the lens cover can be produced for example by injection molding. Alternatively, it is possible to provide a lens cover having an extruded profile.
  • the lens cover covers two or more groups of light-emitting diodes. That is, the lens cover may comprise two or more primary optic elements, each primary optic element including a group of light emitting diodes having one, two or three light emitting diodes. In this way, it is possible to provide a large number of light emitting diodes with Primäroptikianon by adjusting the lens cover to the LEDs, without an adjustment of the primary optics element to the associated light emitting diode or group of light emitting diodes is necessary for each group of LEDs or for each light emitting diode.
  • a light intensity distribution curve of the light emitted by the lighting module at the light exit side of the cover during operation is substantially independent of the number of light emitting diodes per group. That is, due to the described cover, it is possible by increasing To provide the lighting module with light emitting diodes a higher luminous flux package, without thereby greatly changes the luminous intensity distribution curve.
  • the distance between adjacent primary lenses is the same in each case.
  • the luminous intensity values in candela are related to a luminous flux of 1000 lm. They can therefore be specified in the unit cd / klm.
  • the resulting luminous intensity distribution curve surrounds a surface in the polar diagram, for example for the CO ° / C180 ° plane or for the C90 ° / C270 ° plane.
  • the fact that the luminous intensity distribution curve of the light emitted during operation by the luminous module at the light exit side of the cover is essentially independent of the number of light-emitting diodes per group may mean that these surfaces have an overlap of at least for the same planes of the luminous module when the luminous module is differently equipped 85%, in particular of at least 90% or at least 95%.
  • the luminous intensity distribution curves for different illuminator configurations are similar to one another and include areas of similar size.
  • the luminaire described here comprises a cover described here. There are therefore all the features described for the cover also disclosed for the lamp and vice versa.
  • the luminaire comprises a connection carrier with a multiplicity of light-emitting diodes which are designed to emit light.
  • Connection carrier is, for example, a carrier for the light-emitting diodes, via which they can also be contacted electrically.
  • the luminaire comprises a multiplicity of primary optic elements, wherein each luminous diode is arranged downstream of a primary optic element, and a cover as described here, which is arranged on the side of the light emitting diodes facing away from the primary optic elements.
  • the luminaire comprises fastening elements which hold the connection carrier and the primary optics elements together in the luminaire.
  • the fastening elements are, for example, sections of a metal sheet on which the connection carrier is arranged.
  • Such fasteners are for example in the European patent application EP 17171954.5 described, which is hereby expressly incorporated by reference.
  • the Figure 1A shows a schematic sectional view of an embodiment of a light module described here or a luminaire described here with a cover described here.
  • the FIG. 1B shows the embodiment of the Figure 1A with the associated beam path during operation of the light module.
  • the light module of Figures 1A and 1B it is, for example, an elongated light module, which has a main extension direction, for example, perpendicular to the image plane.
  • the Figures 1A and 1B show a sectional view transverse to the longitudinal axis of the light module in the C0 ° / C180 ° plane.
  • the light module comprises the cover 1.
  • the cover 1 comprises the central region 12.
  • the side region is adjoined in each case by an edge region 11a, 11b at the central region 12.
  • Each edge region 11a, 11b has a structuring 2 on a light entry side 1a of the cover 1.
  • the structuring 2 comprises, for each edge region 11a, 11b, a multiplicity of structures 21, which in particular are serrations in cross-section, which can extend as lamellae over the entire length of the cover 1.
  • the structuring 2 extends in several lamellae in the main extension direction of the cover 1.
  • the structuring 2 has in cross section a plurality of prongs 21, which are formed from the material of the cover 1.
  • the prongs 21 tend in places in the direction of the central region 12, whereby the optical effect is enhanced.
  • a deflection of the incident light 7 takes place at the structuring 2 by refraction and / or total reflection.
  • the cover 1 is integrally formed so that the edge portions 11a, 11b and the central portion 12 are integrally connected with each other.
  • the cover is formed, for example, with a translucent, transparent matrix material 14, into which particles 15 can be introduced, which can be, for example, radiation-scattering, radiation-reflecting or radiation-absorbing particles.
  • the density of the particles can vary within the cover.
  • the density in the center region 12 can be particularly large in order to prevent direct imaging of the light-emitting diodes 5 of the light-emitting module on the light exit side 1b of the cover 1.
  • the central region 12 has a width b2 that is greater than the width b1 of the edge regions 11a, 11b.
  • the width b1 of the edge regions 11a, 11b may be, for example, at most 20% of the width b2 of the middle region 12.
  • the edge regions 11a, 11b are bent in comparison to the central region and extend in the direction of the light entry side 1a.
  • the light module may be formed symmetrically to a center plane which is parallel to the C90 ° / C270 ° plane, ie in the longitudinal direction of the light module runs.
  • the lighting module further comprises a housing body 8.
  • the housing body 8 comprises a counterpart 81 which, for example, for receiving a fastening means, for example a snap hook 13, in particular a linear hook, is provided, with which the cover can be attached to the housing body (see also the FIG. 5 ).
  • the lighting module comprises a connection carrier 4, which is arranged on a bottom surface of the housing body 8 facing the cover 1.
  • the connection carrier 4 is, for example, a printed circuit board.
  • the LEDs 5 are attached and electrically connected.
  • the light-emitting diodes 5 can be combined into groups 50 of light-emitting diodes 5.
  • Each group 50 of light-emitting diodes 5 is followed by a primary optics element 6, which is, for example, a lens.
  • Each light-emitting diode 5 comprises at least one light-emitting diode chip or consists of at least one light-emitting diode chip.
  • the groups 50 of light-emitting diodes 5 are arranged, for example, along the main extension direction of the module.
  • FIGS. 1A and 1B is a single row arrangement of the LEDs 5 given. That is, each group 50 of light-emitting diodes 5 comprises exactly one light-emitting diode 5.
  • the light-emitting diode 5 is arranged, for example, centered to the longitudinal central axis of the light module.
  • the FIG. 1B shows the light module during operation of the light emitting diode 5.
  • the primary optics 6 light 7 is emitted on the central region 12 of the cover 1, whereby a certain illuminance is generated.
  • the beam angle range of the primary optics elements 6 is chosen such that hardly or no light strikes the edge area 11a, 11b of the cover 1 and only the central area 12 is illuminated.
  • each group 50 of light-emitting diodes 5 comprises two light-emitting diodes 5 which are arranged next to one another.
  • the light emitting surface of the group 50 of light-emitting diodes 5 is increased, for example doubled.
  • the remaining components, such as the primary optic elements 6 or the cover 1, remain unchanged. Due to the enlargement of the light exit surface of the group 50 of light-emitting diodes 5, there is an enlargement of the emission angle range of the primary optics elements 6.
  • the structuring 2 is therefore designed to reduce the angle between the direction of the incident light and a perpendicular n to a main plane of extension of the central region 12 for the light emitted by the edge region.
  • the graphic plots of the FIGS. 3A to 3D show light intensity distribution curves in the polar diagram.
  • FIGS. 3A and 3B show light intensity distribution curves that are generated only by the primary optics 6, for the single row light module of Figures 1A and 1B in the FIG. 3A and the double row light module of the FIGS. 2A and 2B in the FIG. 3B ,
  • the light intensity distribution curve 71 in the C0 ° / C180 ° plane and the light distribution curve 72 in the C90 ° / C270 ° plane shown. From the comparison of the light intensity distribution curves 71, 72 in the FIGS. 3A and 3B It can be seen that the light intensity distribution curves 71, 72, which are generated only by the primary optic elements 6, for the embodiments of the Figures 1A and 1B on the one hand and the embodiment of the FIGS. 2A and 2B on the other hand strongly different from each other.
  • FIGS. 4A and 4B shows schematic sectional views of a lighting module or a luminaire described here, which differs from the lighting module of the embodiment of FIGS. 2A and 2B differs in that each group 50 of light-emitting diodes 5 now comprises three LEDs 5.
  • each group 50 of light-emitting diodes 5 now comprises three LEDs 5.
  • the light intensity distribution curves 71, 72 of the light 7 emitted by the light module at the light exit side 1b of the cover 1 during operation are substantially equal to those Luminous intensity distribution curves 71, 72 as in the Figures 3C and 3D are shown.
  • FIG. 5 shows an embodiment of a light module described here or a luminaire described here with a cover 1 described here, in which the central part 12 of the cover 1 at the light entrance side 1a has a structuring 3.
  • the structuring 3 is wave-shaped and ensures that no direct images of the light-emitting diodes 5 occur on the light exit surface on the light exit side 1 b of the cover 1.
  • particles of a volume-scattering material for example Evonik DF21 material
  • Evonik DF21 material can be introduced into the matrix material 14 of the cover 1.
  • the cover 1 can be fixed by means of a snap hook 13 on the housing body 8, which has a counterpart 81 for it.
  • the connection between the cover 1 and the housing body 8 can be formed by snapping or pushing the cover 1.
  • the light module of FIG. 5 further comprises a lens cover 60 comprising a plurality of lenses 6, each lens 6 being followed by a group 50 of light emitting diodes 5.
  • the lens cover 60 may be made by injection molding, for example, so that the primary optics 6 of FIGS Lens cover 60 are integrally connected to each other.
  • the lens cover 60 may find use due to the use of a cover described here for groups 50 of light emitting diodes 5 with one, with two or three LEDs 5 without the light distribution curve at the light exit side 1b of the cover 1 substantially changes.
  • connection carrier 4 which in turn is arranged on the plate 90.
  • fasteners 91 which is, for example, section of the sheet 90, the connection carrier 4 and the primary optics are held together in the light or in the light module.
  • the structuring 2 in the edge regions 11a, 11b is formed in each case by TIR (Total Internal Reflection) structures. Furthermore, the cover 1 in the edge regions 11a, 11b no kink, but is flat on its light exit side 1b. In order nevertheless to achieve a reliable deflection of the incident light in the direction of the central region 12, the structuring 2 is formed by totally reflecting structures which are serrations 21 in cross-section which are inclined towards the central region 12.
  • the structure size of the structuring that is to say, for example, the volume of the lamellae of the structuring 2 and / or the width and / or the height of the tines 21, is greater than for the exemplary embodiments with bent edge regions 11a, 11b by the desired steering effect of the structuring to reach.
  • the patterning 2 in the edge regions 11a, 11b can also achieve a targeted change of the external light beams.
  • the light intensity distribution curves even in the case of single-row placement, as in the embodiments of the Figures 1A and 1B is shown, more tightly packed fails. This is particularly advantageous for higher luminous flux packets, since these are often mounted relatively high in the application, whereby a tightly focused light distribution curve is advantageous for illuminating a certain area.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP18202639.3A 2017-10-27 2018-10-25 Couvercle pour un module lumineux, module lumineux et luminaire Active EP3477192B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017125245.2A DE102017125245A1 (de) 2017-10-27 2017-10-27 Abdeckung für ein Leuchtmodul, Leuchtmodul und Leuchte

Publications (3)

Publication Number Publication Date
EP3477192A1 true EP3477192A1 (fr) 2019-05-01
EP3477192C0 EP3477192C0 (fr) 2023-09-27
EP3477192B1 EP3477192B1 (fr) 2023-09-27

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EP18202639.3A Active EP3477192B1 (fr) 2017-10-27 2018-10-25 Couvercle pour un module lumineux, module lumineux et luminaire

Country Status (3)

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EP (1) EP3477192B1 (fr)
DE (1) DE102017125245A1 (fr)
PL (1) PL3477192T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7394313B2 (ja) 2019-08-08 2023-12-08 パナソニックＩｐマネジメント株式会社 レンズおよび照明器具
JP7394335B2 (ja) 2019-08-08 2023-12-08 パナソニックＩｐマネジメント株式会社 レンズおよび照明器具

Citations (4)

* Cited by examiner, † Cited by third party
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