EP3263974B1 - Luminaire downlight - Google Patents
Luminaire downlight Download PDFInfo
- Publication number
- EP3263974B1 EP3263974B1 EP17178109.9A EP17178109A EP3263974B1 EP 3263974 B1 EP3263974 B1 EP 3263974B1 EP 17178109 A EP17178109 A EP 17178109A EP 3263974 B1 EP3263974 B1 EP 3263974B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- hole
- pot
- dimming
- illuminant
- 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
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Classifications
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- 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
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
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- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
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- 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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
- F21V21/04—Recessed bases
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- 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
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- 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
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0012—Furniture
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- 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
- F21W2106/00—Interior vehicle lighting devices
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- 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
- F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2121/008—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 for simulation of a starry sky or firmament
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- 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 to a perforated radiator with at least one luminous means, preferably in the form of an LED, a focusing optics for the hourglass-like constriction of the light emitted by the illuminant on a Einschnürquerites and a veneer with the constricting cross section of the emitted light enclosing light exit opening.
- the invention further relates to a lighting device in which such a hole radiator is arranged behind a ceiling or wall panel and illuminates the space lying in front of the panel through a hole in the panel.
- the illuminants are each assigned focusing optics which constrict the light emitted by the light sources in the manner of an hourglass and focussed through the holes.
- the focusing optics is designed in such a way that the constricting cross section, that is to say the smallest cross section of the emitted light cone, comes to lie in the area of the panel holes.
- the said constricting cross-section may be a point in the sense of a focal point or else a cross-sectional surface of finite, limited extent, if the focusing optic does not completely constrict the emitted light onto a focal point.
- Such hole radiators with a focusing optics in conjunction with an upstream facing whose light exit openings are greatly reduced in cross section and significantly smaller than the underlying hole radiator including its illuminant and focusing optics, eliminate the direct glare effect more or less, as a direct looking into the bulbs or
- the focus optics is no longer possible or would only be possible if a person standing directly under the hole looks perpendicular to the panel or into the hole in the panel, which normally does not occur. However, it can still come to a scattered glare, since the pinhole or the light exit openings in the vorgeblendeten panel due to stray light even assume a certain brightness and a viewer, of course, still sees the contours of the light exit openings even at an oblique angle.
- the pinhole in the form of ceiling or wall cladding panels namely in practice always has a certain thickness, which is for example in gypsum boards or wooden panels several millimeters and metal panels even more than 0.5 mm, so that the hole walls, the light emitted from the be illuminated, lit and visible. Even if the constricting cross section of the light cone emitted by the focusing optics is smaller than the diameter of the light exit opening, stray light is incident on the walls of the light exit openings.
- the space above or behind the veneer panel also has brightnesses that are visible and disturbing due to scattered light of the focusing optics or their lens. Particularly in the case of very thin panels, such as metal panels, the said space behind the panel is also visible under shallower viewing angles, since the smaller depth of the holes in the panel blocks the viewing axis through the holes only at very shallow viewing angles.
- the aforementioned glare effects due to stray light are further intensified by the architects' and room designer's desire for white ceiling panels or very bright delusions since white or light-colored materials, which are generated, for example, by powder coating of the veneer, further increase the glare effects mentioned by stray light.
- the present invention seeks to provide an improved hole radiator and an improved illumination device of the type mentioned, avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.
- a uniform room illumination with high energy efficiency is to be achieved with great glare freedom.
- Preferred embodiments of the invention are the subject of the dependent claims. It is therefore proposed to prevent the scattered light propagation between the luminous means or the focusing optics associated therewith and the light exit recess or a scattered light propagation in the space behind the light exit opening by a masking pot which encloses the focusing optics and / or the illuminant of the perforated radiator without stray light reflect or even bundle. If the perforated radiator is installed behind a paneling or suspension or covering panel, stray light emanating from a perforated radiator can no longer propagate through the aforementioned screening pot and lighten panel holes which are associated with other hole radiators.
- the Ausblendtopf is at its the light exit opening and thus the Einschnürquer songs the light rays bordering bottom section specially shaped and / or provided with a special surface in order to eliminate or at least significantly reduce the scattered light reflecting effect of the dimming pot at least in the region of its light exit opening.
- the veneer comprises a dimming pot enclosing the focusing optics and / or the illuminant, the bottom portion tapering inwardly toward the constricting cross section of the emitted light defining the light exit opening with a hole edge from which the surface contour of the dimming pot slopes in the light emission direction inclined to the direction of radiation widens.
- a dimming pot enclosing the focusing optics and / or the illuminant
- the bottom portion tapering inwardly toward the constricting cross section of the emitted light defining the light exit opening with a hole edge from which the surface contour of the dimming pot slopes in the light emission direction inclined to the direction of radiation widens.
- Such a defined hole edge with an outwardly extending, that is in the emission direction widening connection contour combines the advantages of thick and thin pinhole equally, without having to accept their disadvantages. While in a fairly thick pinhole with a cylindrical through hole, the space behind the pinhole is well protected against peeks and thus good against direct glare by looking directly into the light source behind it, it comes to the hole itself due to the greater wall thickness to greater brightening and scattered glare. Conversely, a flat, razor-thin pinhole eliminates the brightening in the area of the inner wall of the hole, but through the hole of such a paper thin pinhole can be seen even at shallower viewing angles.
- Said formation of the Abblendtopfs with a defined hole edge from which the outwardly adjoining pot contour widens obliquely to Hauptabstrahlraum, combines the two advantages, namely little or no brightening of the hole edge and still a relatively high viewing density at shallower to steeper angles without the corresponding disadvantages.
- the defined hole edge reduces the available for the reflection and thus brightening edge edge surface on the very thin, possibly mathematically zero going hole edge ring.
- the adjoining, outwardly widening surface contour provides a viewing protection edge, without giving the scattered light reflection surface.
- Said hole edge forms the smallest diameter of the Abblendtopfs and forms, so to speak, the eye of the needle for scattered light, wherein said hole edge is advantageously at the constriction of the emitted light cone or the emitted light beams.
- Said edge of the hole is advantageously formed sharp-edged, to let go the height of responsible for scattered light reflection inner surface of the light exit opening to zero, wherein the adjoining such a sharp edge of the edge hole edge contours an acute angle can define.
- an acute-angled, sharp-edged hole edge With such an acute-angled, sharp-edged hole edge, the hole whitening and thus glare can be largely reduced.
- sharp-edged hole edges for manufacturing reasons often have a certain rounding or phasing or refraction.
- sharp-edged in the sense of the above-described feature therefore mean that at the edge of the hole a radius of curvature - be it the actual radius of curvature of a rounding or the radius of a hollow circle placed on a chamfer or bevel - is only one Fraction of the wall thickness of the bottom portion of the Abblendtopfs or only a fraction of the depth of the pot bottom in the emission direction, for example, less than one fifth of the bottom wall thickness or less than 10% or 5% of the hole diameter.
- the dimming pot starting from said hole edge starting on both sides ie the side facing the lamp and the side facing away from the illuminant side can widen in contour or have flared to the two sides hole edges, which on said, preferably converge sharp-edged hole edge.
- the hole flank facing away from the light source which adjoins the hole edge, can be contoured in such a way that a tangent placed on the hole flank passes by the light exit face of the focusing lens.
- the viewed in the direction of radiation undercut Abblendtopfkonturleiter behind the hole edge, ie on the side facing away from the edge of the hole edge is sufficiently strong to prevent that also emitted from the edge regions of the focusing optics light falls on said hole flanks outside the hole edge.
- the said hole flank is in particular so strongly beveled that light emitted by the light exit surface of the focusing optics hangs, so to speak, on the hole edge and the hole flank lies outwardly in the shadow of the hole edge.
- the said hole flank which adjoins the edge of the hole towards the outside, widens outwards from the edge of the hole at an expansion angle which is at least as great as the constriction angle of the light constricted by the focusing optics.
- the said hole flanks can advantageously be inclined at an angle of 50 ° or more to the main emission direction. If the outer hole flanks also form a cone, they can define a cone angle of two times 50 ° or more.
- the aforementioned expansion angle of the lamp flanks facing away from the hole edges, which surround the edge of the hole, may advantageously be in the range of about 100% to 150% of said constriction angle of the emitted light. In this way, on the one hand prevents scattered light from falling on the said outer hole flanks, while on the other hand is still given a good look protection against glances through the hole, as by only a limited expansion of the eyes pair facing hole edge forms a visual protection edge, without the Abblendtopf this would require excessive sizing.
- the lighting means facing away from the hole edge can advantageously continuously, in particular steadily widen or have a continuous, in particular continuous course, especially when viewed in cross section.
- the mentioned flare angle is the cone angle.
- the aforementioned tangent lies in this case along the cone flank or coincides with said straight cone flank and forms, so to speak, their extension. With a suitable cone angle, the tangent passes in the manner described above past the light exit surface of the focusing optics.
- the hole flank viewed in cross-section, does not have to have a straight course, but can, for example, also expand in a bell-shaped manner from the hole edge, ie, for example, with increasing distance from the hole edge in the emission direction.
- a curved Cross-sectional contour of the hole flank is this contoured so that - viewed in cross section - at the edge of the hole tangents all at least expand with at least the aforementioned expansion, at least equal to the constriction angle of the light emitted by the focusing optics or may be greater than this.
- the hole flank may also have a concave contour, so that a straight line laid on the hole flank rests on upper and lower end portions of the concave flank and has air therebetween to the flank flank surface.
- a concave contoured hole flank can be curved in various ways, for example, bent approximately uniformly curved or circular, so that the straight line defines a secant.
- the concave hole flank can also be parabolic-curved, preferably in such a way that the curvature becomes stronger toward the focusing optics or against the light emission direction.
- the perforated radiator radiates approximately downwards as a ceiling radiator
- the radius of curvature of the concavely contoured flank edge can become increasingly smaller towards the upper end and / or become progressively larger towards the bottom.
- the said bottom edge forming portion of the Abblendtopfs may be formed by a thin-walled bottom web, which project from a Mante direabrough of Abblendtopfes from inside or may extend inwards.
- a land web may have an extension transverse to the main emission direction, which is a multiple of the wall thickness of the bottom web, wherein such a land land advantageously be bevelled or sharpened in the region of its edge defining the edge of the hole, to form the edge of the hole sharp-edged.
- the bottom portion of the Abblendtopfs have an extension in the emission direction, which is in the range of about one quarter to four quarters of the hole diameter and / or a quarter to four quarters of the axial Spacing the hole edge of the focusing optics can be.
- the hole diameter of the dimming pot defined by the hole edge can be dimensioned such that the diameter of the focusing optics corresponds to at least four thirds of the diameter of the dimming pot, preferably two to three times the diameter of the hole.
- the hole edge hole diameter or the diameter of the light exit opening of the Abblendtopfs, which surrounds the light beam area in the region of the constriction may be slightly larger than the diameter of said constriction of the light beam area, so that, so to speak, remains an annular gap between hole edge and light beam ,
- the light exit opening is only slightly larger than the Einschnürquerites the light beam or may correspond to this Einschnürquerroughe substantially, creating a good glare protection is achieved with a small length of the Abblendtopfs.
- the abblend pot mentioned can - roughly speaking - be formed sleeve-shaped and have a to the bottom edge of the defined bottom portion subsequent lateral surface, which may be at least approximately cylindrical.
- the lateral surface of the sleeve-shaped Abblendtopfs may also be bulbous or convex, so that the overall shape of the Abblendtopfes a ball or egg shape approaches.
- the dimming pot in the inner diameter of its lateral surface portion can be adapted to the diameter of the focusing optics, in particular such that the inner diameter of the dimming pot corresponds approximately to the outside diameter of the focusing optics at a pot portion close to the illuminant.
- the focusing optics can be edged to save space.
- the dimming pot can advantageously surround the entire focusing optics on the lateral surface side, in particular at least to the extent that the light exit surface of the focusing optics is enclosed by the dimming pot.
- the Abblendtopf but also miteinium a subsequent to the focusing optics bulb.
- the said focusing optics can in principle be designed differently, for example comprising a reflector, which captures the light emitted by the at least one luminous means and focuses in the manner mentioned.
- the focusing optics may also comprise a lens which is arranged between the luminous means and the light exit recess and is advantageously designed such that it covers the entire light emitted by the luminous means and throws it through the light exit recess with said constriction.
- the focusing optics is advantageously such that the entire light emitted by all bulbs of the hole radiator light is captured and emitted at least substantially completely in the form of the constricted beam path through the light exit opening of the Abblendtopfs.
- At least the visible area of the inner surfaces of the anti-dazzle cup can be made jet black, so that, if necessary, stray light falling on the inner surfaces of the anti-dazzle cup can not continue there is reflected.
- Such a deep black shiny formation of the visible, the light exit opening bordering inner surfaces of the Abblendtopfs prevents brightening of the Lichtaustrittsaus supraung and dazzling outgoing therefrom and allows greater freedom of design with respect to the contouring of the Abblendtopfs, so that it is better adaptable to the installation environment.
- Such a deep black shiny surface may in particular have a maximum diffuse reflectance of less than 2%, preferably less than 1% and in particular less than 0.5%.
- the deep black formation of the surface can in this case be achieved in various ways, for example by polishing a black-colored pot material or a deep black surface coating, for example in the form of a piano finish coating.
- the entire inner surface of the Abblendtopfs can be formed by the focusing optics to the light exit opening including deep black shiny.
- the hole heater can basically be used freestanding or free-hanging use, which is prevented by the described Abblendtopf a dazzling effect without further measures such as Abblendpaneele or lampshades.
- the hole radiator can also be installed in or behind a cladding or suspension or covering panel, for example in the form of ceiling or wall panels.
- the Abblendtopf be installed in a corresponding field in a panel or a wall of the furniture or device.
- lighting devices such as chandeliers, floor lamps or desk lamps possible.
- the hole heater 1 may have one or more LEDs as a light source 2, which may be arranged, for example, on a carrier board.
- focusing optics 3 are provided, which may comprise a lens 4 which may be placed or slid over the light source 2 with a cup-shaped light entry surface in order to substantially completely cover the light emitted by the light source 2 to capture emitted light.
- the trapped light can propagate in the, for example, cup-shaped lens body and is reflected surface of the jacket - which can be achieved by total reflection and / or a reflective coating of the lateral surface of the lens 4 - and thrown onto the frontal light exit surface, from which the light in the form of a cone or a similar constricted beam is delivered.
- the constricted beam tapers down to a constricting cross section 5, in which the beam has its greatest energy density and can have a maximum diameter of a few millimeters, the diameter can also go to zero, if the constriction in the sense of a focal point completely is constricted.
- the lens 4 may be provided with a faceting on the surface of the cover surface and / or on the exit surface in order to improve the light mixing and to compensate for dimensional tolerances, which faceting may also be provided in the case of an alternatively provided reflector.
- the hole heater 1 further comprises a Abblendtopf 6, the - like Fig. 1 shows - can have an approximately cylindrical, sleeve-shaped contouring and the lens 4 encloses coat surface side, wherein said Abblendtopf 6 advantageously extends at least from the Einschnürquerites 5 up to the exit surface of the lens 4.
- the dimming pot 6 completely encloses the emitted light beams on the lateral surface side between the light exit surface and the constricting cross section 5.
- the Abblendtopf 6 comprises a bottom portion 7 which projects from the outer wall of the Abblendtopfes 6 inwardly or tapers to the Einschnürquerites 5 and there, that is defined at the Einschnürquerexcellent 5, a hole edge 8.
- Said dimming pot 6, including its bottom portion 7, may be rotationally symmetrical, for example having a circular cross-section.
- Said hole edge 8 is advantageously sharp-edged, in particular acute-angled, wherein on the flanks of the hole edge 8 in cross-section tangents may for example include an angle of less than 60 °, for example 40 ° or less.
- the cross-section of the dimming pot 6 expands on both sides, ie both towards the light-emitting-side and towards the side facing away from the light-emitting means.
- the dimming pot is formed undercut on both sides of the hole edge 8.
- a hole 9 away from the illuminant, which adjoins the hole edge 8, widens in the emission direction 10 and extends at an acute angle to the main emission direction 10, which is substantially coaxial to the axis of symmetry of the lens 4 and / or coaxial to the longitudinal axis of the lens Lochstrahlers 1 can be.
- the outer-side hole flank 9 viewed in cross-section may have a straight course and / or define a conical surface, wherein said hole flank 9 can advantageously expand at an expansion angle 11, which can essentially correspond to the constriction angle of the light emitted by the lens 4 or can be slightly larger.
- said expansion angle 11 of the hole flank 9 can advantageously be twice 50 ° or slightly larger, for example in the range of twice 50 ° to twice 60 °, for example twice 51 ° twice 60 °.
- the aforementioned expansion angle can be, for example, 100% to 150%, preferably between 100% and 120% of the angle of constriction of the emitted light.
- Fig. 1 shows that the hole edge 8 defining bottom portion 7 of the Abblendtopfes 6 may be formed by a thin-walled bottom web, which projects obliquely inclined to the main emission direction 10 inwardly.
- the bottom portion 7 defining the hole edge 8 may have an extension in the emission direction 10 which approximately corresponds to the diameter of the light exit opening 12 and / or may correspond to the spacing of the hole edge 8 from the light exit surface of the focusing optics 3, although other dimensions are also possible.
- the dimming pot 6 may have a diameter that is slightly larger than the diameter of the lens 4.
- the diameter of the light exit recess 12, which is defined by the hole edge 8, is significantly smaller than the maximum diameter of the focusing optics 3.
- the light exit recess 12 may have a diameter, for example in the range of one quarter to one half, for example, about one third of Diameter of the lens 4 is.
- the light exit recess 12 a Have diameters in the range of a few, a few millimeters, for example, two to fifteen, especially five to ten millimeters.
- Fig. 2 shows a basically similar embodiment of a hole radiator 1 as Fig. 1 ,
- the Abblendtopf 6 defines with its bottom portion 7 a sharp-edged hole edge 8, from which the light emitter facing away from flank 9 expands in the direction of radiation, in which case the expansion angle here also advantageously at least equal to the constriction angle of the emitted light or may be slightly larger.
- Fig. 2 Compared to Fig. 1 the execution differs after Fig. 2 essentially by the outer contouring of the dimming pot, which together with a lamp housing 2 enclosing the luminaire housing may have a spherical contouring.
- the hole heater 1 can be used free-standing or free-hanging, while the Fig. 3 and 4 show an installation of the hole heater 1 behind a Verblendungspaneel 13, which may for example form a Deckenpaneel or a dependency panel or a Jardintrennpaneel, but possibly also the top wall of a baking oven. It is understood, however, that the embodiments according to the Fig. 1 and 2 behind such a panel 13 can be installed, or conversely, the embodiments of Fig. 3 and 4 can be used free-standing or free-hanging.
- a Verblendungspaneel 13 which may for example form a Deckenpaneel or a dependency panel or a Kunststofftrennpaneel, but possibly also the top wall of a baking oven.
- the hole heater 1 according to Fig. 3 is basically similar to the execution after Fig. 1 ,
- the Abblendtopf 6 also defines here a sharp-edged hole edge 8, from which the light emitter facing away from the flank 9 expands in the direction of radiation 10, in which case the Aufweitwinkel the light emitter facing hole edge 8, however, is smaller than in the embodiment according to Fig. 1 ,
- said hole flank 9 is provided with a deep black shiny surface, which has a maximum, diffuse reflectance of preferably less than 0.5% and may be formed for example by a deep black piano finish coating.
- the jet black, glossy inner surface formation on the dimming pot 6 can advantageously not only be provided on the hole flank 9 and / or the inner circumferential surface of the light outlet recess 12 which surrounds the constricting cross section 5, but can also extend over the entire inner circumferential surface between the lens 4 and the focusing optics 3 and the said light exit recess 12 extend inclusive.
- the hole heater 1 can be used with the tapered bottom portion 7 of its Abblendtopfs 6 in a Paneelausströmung 14, through which the light is radiated from the back of the panel 13 on the front side in the space to be illuminated.
- the hole edge 8 may also not be sharp-edged or less sharp-edged, in which case tangents placed in the cross-section of the edge 8 of the edge may include an angle of, for example, 90 ° to 120 °, for example 110 ° Fig. 3 shows, according to the said flanks 9 expand in the emission direction.
- the illuminant-facing hole flank 9 which adjoins the hole edge 8 in the emission direction 10
- the embodiment Fig. 4 not contours flared, but substantially cylindrical or contoured slightly tapered in the emission direction, so that emitted by the lens 4 scattered light can fall on said hole flank 9.
- the inner circumferential surface is made jet black in the aforementioned manner.
- the aforementioned deep black, glossy Innemmatel lake can basically also in the embodiments of the FIGS. 1 and 2 be provided is there but possibly also unnecessary, since the sharp-edged Lochkanten will no scattered light, so that there directly the materials of the Abblendtopfs such as wood, concrete, plastic, metal sheet or the like. Form the surface of the bottom portion of the Abblendtopfs.
- the Abblendtopf 6, in particular its bottom portion 7 and / or its Lichtaustrittsö réelle12 also have a polygonal cross-section, for example in the form of a hexagon or a rectangle, wherein a square cross-sectional contouring may be provided, as Fig. 5 shows.
- the "diameter" of the light exit opening for example, can be considered the maximum cross-sectional or opening width (in the sense of the diagonal of a rectangle).
- the transitions of the adjacent, planar patches of such a four- or six- or polygon can be rounded, so that for example in a like in Fig. 5 shown truncated pyramid-shaped bottom portion of the pyramid edges are rounded, see.
- Fig. 5 Other cross-sectional contours such as oval or elliptical are also possible.
- the outside hole flank 9 of the Abblendtopfes 6 viewed in cross-section also have a curved course, in which case different curvature gradients come into consideration, for example.
- a bell-shaped contouring or a dome-shaped contouring In particular, the hole flank 9, as Fig. 6 shows, viewed in cross-section be concave, so that an applied to the hole edge 9 straight line 15 rests on upper and lower edges of the hole flank 9 and between air to the hole flank 9 has, see.
- the curved hole flank 9 can, viewed as a whole, form a coupling ring.
- Such a concave hole flank contouring can basically have different curvatures when the hole flank 9 is viewed in cross-section.
- the curvature can be formed uniformly along the hole flank.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Claims (14)
- Luminaire downlight comprenant au moins un moyen d'éclairage (2) de préférence sous la forme d'une LED, une optique de focalisation (3) destinée à resserrer de manière semblable à un sablier la lumière émise par le moyen d'éclairage (2) à une section transversale de resserrement (5), ainsi qu'un écran doté d'un orifice de sortie de la lumière (12) entourant la section de resserrement (5), l'écran comprenant un pot de tamisage (6) entourant l'optique de focalisation (3) et/ou le moyen d'éclairage (2), dont la partie de fond (7) s'amincissant vers l'intérieur de la section transversale de resserrement (5) de la lumière rayonnée limite l'orifice de sortie de la lumière (12) avec un bord de trou (8), à partir duquel le contour de surface du pot de tamisage (6) s'évase dans la direction de rayonnement de la lumière (10) de manière inclinée par rapport à une direction de rayonnement principale (10), caractérisé en ce qu'un flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage (2) s'évase à partir du bord de trou (8) selon un angle d'évasement (11), qui est au moins aussi grand que l'angle de resserrement de la lumière resserrée par l'optique de focalisation, le flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage (2) s'étendant en continu et des tangentes (15) appliquées au flanc de trou (9) s'évasent toutes au moins avec ledit angle d'évasement (11).
- Luminaire downlight selon la revendication précédente, dans lequel ledit bord de trou (8) est réalisé à bord vif, en particulier à angle aigu.
- Luminaire downlight selon l'une des revendications précédentes, dans lequel le pot de tamisage (6) présente des flancs de trou (9) s'élargissant depuis le bord de trou (8) en direction des deux côtés, le côté orienté vers le moyen d'éclairage (2) et le côté opposé.
- Luminaire downlight selon l'une des revendications précédentes, dans lequel le flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage (7) présente un contour tel et/ou est biseauté de telle manière que la tangente (15) appliquée au flanc de trou (9) évite la surface de sortie de la lumière de l'optique de focalisation (3) active pour l'éclairage.
- Luminaire downlight selon l'une des revendications précédentes, dans lequel l'angle d'évasement (11) du flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage est dimensionné en particulier dans la plage de 100 % à 150 %, de préférence 100 % à 120 % de l'angle de resserrement de la lumière rayonnée par l'optique de focalisation (3).
- Luminaire downlight selon l'une des revendications précédentes, dans lequel le flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage (2) forme une surface conique ou pyramidale, dont l'angle au sommet du cône ou de la pyramide correspond à une plage de 100 % à 125 % de l'angle de resserrement de la lumière rayonnée par l'optique de focalisation (3).
- Luminaire downlight selon l'une des revendications 1 à 5, dans lequel le flanc de trou (9) orienté dans la direction opposée au moyen d'éclairage (2), vu en section transversale, présente un contour à courbure concave et/ou forme une surface en forme d'anneau bombé incurvée suivant plusieurs axes.
- Luminaire downlight selon la revendication précédente, dans lequel le flanc de trou (9), vu en section transversale, est incurvé en forme de parabole et/ou présente un rayon de courbure de plus en plus petit en direction du bord de trou (8).
- Luminaire downlight selon le préambule de la revendication 1, dans lequel l'écran présente un pot de tamisage (6) entourant l'optique de focalisation (3) et/ou le moyen d'éclairage (2), avec une partie de fond (7) limitant l'orifice de sortie de la lumière (12) s'amincissant jusqu'à la section de resserrement (5) de la lumière rayonnée, dont les surfaces intérieures visibles entourant l'orifice de sortie de la lumière (12) sont réalisées brillantes noir profond, ladite partie de fond (7) du pot de tamisage (6) possédant une extension dans la direction de rayonnement (10), qui correspond à une valeur d'un quart à quatre tiers du diamètre de l'orifice de sortie de la lumière (12) et un quart à quatre tiers de l'écartement axial entre l'orifice de sortie de la lumière (12) et l'optique de focalisation (3).
- Luminaire downlight selon la revendication précédente, dans lequel lesdites surfaces intérieures du pot de tamisage (6) sont réalisées brillantes noir profond de l'optique de focalisation (3) à l'orifice de sortie de la lumière (12) compris, la surface brillante noir profond du pot de tamisage (6) possédant un facteur de réflectance diffuse maximal inférieur à 2 %, de préférence inférieur à 1 %, en particulier inférieur à 0,5 %.
- Luminaire downlight selon l'une des revendications précédentes 9 ou 10, dans lequel la partie de fond (7) du pot de tamisage (6) entourant l'orifice de sortie de la lumière (12) est formée par un panneau de fond à paroi mince, qui s'étend vers l'intérieur depuis une partie d'enveloppe du pot de tamisage (6).
- Luminaire downlight selon l'une des revendications précédentes 9 à 11, dans lequel le diamètre de l'optique de focalisation (3) correspond à au moins quatre tiers du diamètre de l'orifice de sortie de la lumière (12), de préférence deux à trois fois le diamètre de l'orifice de sortie de la lumière (12), un diamètre intérieur du pot de tamisage (6) correspondant approximativement au diamètre extérieur de l'optique de focalisation (3).
- Dispositif d'éclairage comprenant au moins un luminaire downlight (1), qui est réalisé selon l'une des revendications précédentes 1 à 12, ainsi qu'un panneau cachant ou de recouvrement (13) doté d'au moins un évidement de panneau (14), à travers lequel la lumière émise par le luminaire downlight (1) peut être rayonnée.
- Dispositif d'éclairage selon la revendication précédente, dans lequel le pot de tamisage (6) du luminaire downlight (1) est situé, avec sa partie de fond (7) entourant l'orifice de sortie de la lumière (12) dans ledit évidement de panneau (14), une pluralité de luminaires downlight étant disposés espacés les uns des autres, les uns à côté ou derrière les autres en au moins une rangée et/ou étant distribués en une disposition en forme de matrice.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016007844.8A DE102016007844A1 (de) | 2016-06-28 | 2016-06-28 | Lochstrahler |
Publications (2)
Publication Number | Publication Date |
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EP3263974A1 EP3263974A1 (fr) | 2018-01-03 |
EP3263974B1 true EP3263974B1 (fr) | 2019-01-09 |
Family
ID=59239849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17178109.9A Active EP3263974B1 (fr) | 2016-06-28 | 2017-06-27 | Luminaire downlight |
Country Status (2)
Country | Link |
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EP (1) | EP3263974B1 (fr) |
DE (1) | DE102016007844A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10151461B2 (en) * | 2017-02-06 | 2018-12-11 | apure holding llc | Lighting device and lighting assembly |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1238446A (en) * | 1917-01-30 | 1917-08-28 | Theodore T Seal | Lens for headlights. |
US2506951A (en) * | 1945-11-05 | 1950-05-09 | Leroy C Doane | Foraminous sheet material and luminaire made therefrom |
US3187174A (en) * | 1962-05-07 | 1965-06-01 | Harry M Gerstel | Lighting fixture |
DE2507857C3 (de) * | 1975-02-24 | 1980-01-10 | Carl Wilhelm Cleff Gmbh & Co Kg, 5600 Wuppertal | Beleuchtungsvorrichtung |
DE3737324A1 (de) * | 1987-10-30 | 1989-05-11 | Scholz & Kronberg Produktions | Tiefstrahlende direktleuchte |
US6655813B1 (en) * | 2002-01-07 | 2003-12-02 | Genlyte Thomas Group Llc | Multi-function luminaire |
WO2004102064A1 (fr) * | 2003-05-15 | 2004-11-25 | Lucea Ag | Source lumineuse |
JP4328954B2 (ja) * | 2003-10-22 | 2009-09-09 | 矢崎総業株式会社 | 室内照明灯 |
JP2007179906A (ja) * | 2005-12-28 | 2007-07-12 | Toshiba Lighting & Technology Corp | 照明器具 |
DE102007040573A1 (de) | 2007-08-28 | 2009-03-05 | Christian Bartenbach | Beleuchtungsvorrichtung |
US8267558B1 (en) * | 2008-10-03 | 2012-09-18 | B/E Aerospace, Inc. | Light rotation assembly |
-
2016
- 2016-06-28 DE DE102016007844.8A patent/DE102016007844A1/de not_active Withdrawn
-
2017
- 2017-06-27 EP EP17178109.9A patent/EP3263974B1/fr active Active
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DE102016007844A1 (de) | 2017-12-28 |
EP3263974A1 (fr) | 2018-01-03 |
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