EP3467372B1 - Led-voutenleuchtsystem mit mikroquerlamellen - Google Patents

Led-voutenleuchtsystem mit mikroquerlamellen Download PDF

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Publication number
EP3467372B1
EP3467372B1 EP18197268.8A EP18197268A EP3467372B1 EP 3467372 B1 EP3467372 B1 EP 3467372B1 EP 18197268 A EP18197268 A EP 18197268A EP 3467372 B1 EP3467372 B1 EP 3467372B1
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EP
European Patent Office
Prior art keywords
cove
light
baffle
light fixture
leds
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
EP18197268.8A
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English (en)
French (fr)
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EP3467372A1 (de
Inventor
Dennis Pearson
Michael D. Bremser
James Johnson
Thomas Lueken
Shaun TOMS
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.)
Tempo Industries LLC
Original Assignee
Tempo Industries LLC
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Filing date
Publication date
Priority claimed from US15/725,834 external-priority patent/US10352509B2/en
Application filed by Tempo Industries LLC filed Critical Tempo Industries LLC
Publication of EP3467372A1 publication Critical patent/EP3467372A1/de
Application granted granted Critical
Publication of EP3467372B1 publication Critical patent/EP3467372B1/de
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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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • F21S8/024—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a wall or like vertical structure, e.g. building facade
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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

Definitions

  • the subject disclosure relates to LED electric lighting fixtures, and more particularly to LED light fixture apparatus configured to project light from a cove or other architectural feature into an adjacent room space.
  • An illustrative LED cove light system may comprise a wall piece mounted to a back surface of a cove and having a top edge which is at the same height as a top surface of a front wall of the cove.
  • a light fixture component is removably attachable at an angle to the wall piece and carries one or more LEDs positioned to project light from the cove out into an adjacent space of a room.
  • the one or more LEDs are mounted near a top edge of the light fixture component but at or beneath the level of the top surface of the front wall of the cove.
  • Illustrative embodiments further provide a method of illuminating a surface comprising constructing a wall piece and configuring the wall piece to be mountable to a cove wall surface perpendicular to a surface to be illuminated and configuring a light fixture component and the wall piece to be to attachable together such that one or more LEDs in the light fixture component are positioned at an angle selected to project light from the LEDs on the surface to be illuminated.
  • the wall piece is then attached to a wall, and the light fixture component is attached to the wall piece such that each of the one or more LEDs is spaced at a selected distance from the surface to be illuminated.
  • Illustrative methods further contemplate attaching the wall piece to a structural surface of predictable integrity so that planned light distributions are not altered during the construction phase of building projects. Overall, an end user is assured a predictable, controlled lighting effect.
  • the baffle serves to control lateral light distribution so as to prevent the development of artifacts on walls or surfaces adjacent the end of a cove light fixture.
  • the light fixture component may be configured so as to enable 85% or more of the light generated by the LEDs to exit the cove when the light fixture component is interlocked with the mounting track.
  • FIG. 1 An illustrative embodiment of an LED cove light system 11 is shown in FIG. 1 .
  • FIG. 1 illustrates a cove 13 having a back wall 15, a front wall 19, and a bottom 17, which, in the illustrative embodiment, form a channel 20 of rectangular cross-section.
  • the front wall 19, may be, for example, 2 to 6 inches (approximately 5.1 to 15.2 centimetres) high.
  • a cove light fixture 21 is attached to the back wall 15.
  • the illustrative cove light fixture 21 includes a wall piece or mounting track 22 and an LED fixture component 23, which carries one or more LEDs, LED modules, or LED lighting devices, e.g. 25.
  • the top edge 27 of the wall piece 22 lies at the same height as the top edge 29 of the front wall 19 of the cove 13.
  • the wall piece 22 may be constructed of thermally conductive plastic or a composite polycarbonate.
  • the LED light fixture component 23 is constructed to clip on to the wall piece 22 at a predetermined fixed angle of, for example, 20 degrees to the horizontal, and the one or more LEDs 25 are positioned as high as possible toward the top edges 27, 29.
  • adjacent fixture units are shipped clipped together and include a length adjustment feature, which allows the overall length of a number of interconnected units to be adjusted.
  • each LED light module 23 directs LED-generated light through a respective lens 28 ( FIG. 3 ).
  • lenses 28 may be used to tailor the light output pattern of the LEDs 25 in a desired manner.
  • lenses 28 may also protect the LEDs 25 and/or assist in sealing the modules 23, 24.
  • the system is configured to optimize the distribution of available light in a pattern 32 such as illustrated in FIG. 2 .
  • optics may be used to assist in projecting light from the cove 13 out into the room 31 to contribute to the useable ambient light in the space, to provide a more pleasing effect to the eye, to eliminate the possibility of glare, and to assist in meeting modern energy codes and requirements (e. g. ASHRAE 90.1) requiring a certain power density (W/sq ft) that can be attributed to lighting.
  • Optics may be employed, for example, to shift the normal light distribution pattern 30 to a more desirable distribution, e.g. 32.
  • the light distribution may varied by changes in the lens 28 or the addition of a reflective surface positioned below the LEDs 25 and attached to the printed circuit board 47.
  • the first module 23 includes a base component 40, left and right shield components 43, 53, a module top 45, a printed circuit board (PCB) 47, and a dome lens 28.
  • the second module 24 includes a power through base component 50, left and right shields 51, 53, a module top 45, a PCB 47 and a dome lens 28.
  • the respective module tops 45 close the respective base components 40, 50 and receive and mount the PCB's 47.
  • the respective left and right shields 43, 53 cover holes in the bottom of base component 40 in order to be compliant with U.L. listing requirements for electrical safety since line voltage wires pass through the cavity formed by components 40 and 45 and attach to the input PCBA 73.
  • FIG. 3 illustrates one embodiment of such an interconnection assembly, which includes an extension-reduction slide component 63, an extension retaining clip 65, and a wireway cover 67. These components are further illustrated in FIG. 10 .
  • Embodiments of an interconnection assembly enabling linear movement of adjacent modules are also taught in U.S. Patent Publication 2014/0307438, published October 16, 2014 .
  • A.C. power is introduced into the first module 23 by a male 3-pin connector assembly 55, which plugs into an opening 56 in the base 40.
  • A.C power may then exit the second base 50 via a female end cap 3-pin connector 57, which may cooperate with three female receptacles 59.
  • Power is supplied to each of two female in-line connector assemblies 72 and from there to respective A.C. power board assemblies 73.
  • the power board assemblies 73 supply conditioned A.C. power to the respective PCB's 47 via respective 4-pin by two- row connectors 75.
  • Male power pins 79 provide the return from the PCB's 47 to the A.C. wires 71 via the respective connectors 72.
  • the A.C. power feed and conditioning circuitry in the illustrative embodiments may be constructed as disclosed in U.S. patent application serial no. 14/941,476, filed November 13, 2015 , and entitled "Compact A.C. Powered LED Light Fixture".
  • FIG. 4 illustrates a circuit board 47 and associated components in more detail.
  • the LEDs 25 are arranged linearly along an upper edge of the board 47 and space equally apart.
  • the LEDs 25 may be Nichia 757 type LEDs, 0.5 Watts. This positioning of the LEDs 25 assists in obtaining various desired light distribution patterns by placing the LEDs 25 near or at the height level of the front cove wall 19 ( FIG. 1 ).
  • the LEDs 25 may be positioned one half inch (approximately 1.3 centimetres) below the top edge 29 of the cove wall 19.
  • FIGS. 6-8 show an illustrative embodiment of an interconnection mechanism for joining a wall piece 22 and a light fixture module, e.g. 23.
  • the wall piece 22 has a central channel 81 of generally rectangular cross-section having an open entry way 83.
  • the bottom surface 85 of the light fixture module 23 is cantilevered to have linear lower and upper segments 87, 89 which meet an obtuse angle "A.โ€
  • a latch member 91 is attached to the upper segment 89 and has a leg 93 and a foot 95.
  • the channel 81 runs the entire length of the wall piece 22, and the foot 95 is positioned at two locations on the light fixture module 23. This need not be the case in other embodiments.
  • the latch member 91, channel 81 and entry way 83 are so shaped and dimensioned that the upper end 99 of the foot 95 may be inserted into the upper end of the channel 81, which enables the lower end 97 of the foot 95 to swing into the channel 81, as indicated by arrow 101 in FIG. 7 .
  • the foot 95 may be dropped down into the interconnected or attached position shown in FIG. 8 .
  • the LED 25 is disposed at a selected angle, for example, 20 degrees to the horizontal, as discussed above.
  • the cantilevered bottom surface on the light fixture module 23 facilitates this interconnection mechanism. In this manner, a tool-less interconnection and installation of the light fixture module 23 and the wall piece 22 is achieved.
  • FIG. 9 illustrates a lighting pattern achievable according to illustrative embodiments in a room with vertical walls 401, 405 lying perpendicular to a ceiling 403.
  • the vertical walls 401, 405 meet with the ceiling 403 at respective edges 404, 410.
  • the vertical cove back wall 15 lies against the vertical wall 401.
  • the Candela curve of maximum intensity 400 forms about a line 402 perpendicular to the surface of the circuit board 47 carrying the LEDs 25; however those skilled in the art will appreciate that this maximum intensity direction can be altered by the use of optics.
  • 85% efficacy is the ratio of the "useful" light which illuminates a desired surface (i.e. visible to the observer) to that of the light emitted from the luminaire (some of which is lost in the lens 28).
  • the terms low, medium and high candle power are used qualitatively because the brightness on the relevant surface (i.e. ft.-cd) goes as the inverse of the distance squared.
  • ft.-cd the brightness on the relevant surface
  • the fundamentals of uniform lighting are primarily based on the ratio of intensity in the direction from the source to the task.
  • a source that is aimed directly at a task is easily expressed as the Candela (Candlepower) divided by the distance to the task squared, (Cp/D โ‡ 2).
  • Candela Chippower
  • Cp/D โ‡ 2 the distance to the task squared
  • a cosine factor of the angle along with the distance to the task determines the foot-candles and therefore the uniformity Cp / D โ‡ 2 โ‡ cos โ‡ .
  • the intensity (Candela) from the source to the outer reaches of the task must be substantially higher than the intensity toward the closest area of the task.
  • the light toward the farthest area needs to be ten times that of the closest area with the mid-range blending from low to high in order to achieve good uniformity.
  • the human eye can notice a lighting ratio of approximately 3:1, therefore, good uniformity with no shadows or hot spots would be considered outstanding.
  • a single luminous ceiling plane can be achieved.
  • a system which delivers 85% efficacy from the cove can provide the primary light in the space, entirely eliminating the need for downlights, typically provided by downlight "cans," and resulting in tremendous savings in construction costs in various applications.
  • Performance may be enhanced further in some embodiments by employing high light reflectance value (LR greater than 70) paint or other finish on a ceiling or other surface.
  • An 85% efficacy rating can be contrasted to fluorescent strips where 40% of the light exits the cove and to prior LED linear fixtures where 60% of the light exits the cove.
  • the first light fixture wireway module 123 includes a first base component 140, a heat sink 145, a printed circuit board (PCB) 147, and a lens 127.
  • the second light fixture wireway module 124 includes a second base component 150 and a lens 127.
  • the second light fixture wireway module 124 also includes a heat sink and a PCB, which may be constructed and positioned identically to heat sink 145 and PCB 147, but which are not shown for purposes of clarity of illustration.
  • the respective heat sinks, e.g. 145 close the respective first and second wireway module components 140, 150 and receive and mount the PCB's 147.
  • the heat sinks comprise generally rectangular trays, which snugly receive the PCB's, e.g. 147.
  • the PCB 147 may be attached to the trays, for example, mechanical fasteners 200, 207, or in other embodiments by thermally conductive adhesive tape.
  • the base component 140 comprises a power input base and the base component 150 comprises a power output base.
  • the PCB 147 may comprise an LED board mounting one or more LEDs. In one embodiment, the PCB 147 may mount twelve LEDs in a row, each of which collectively receive up to 10 watts of power at 120 volts A.C.
  • a first captive panel screw 200 inserts through holes 201, 203, and 204, then through a retainer ring 205, which holds screw 200 captive upon removal of the heat sink 145 from the base 140, and finally threads into a hole 206 in a top surface of the first base component 140.
  • a second captive panel screw 207 inserts through holes 208, 209, 210, then through a retainer ring 211 and finally threads into a hole 212 in a boss 213 formed on an inner side surface of the first base component 140.
  • each lens 127 has a flat portion 146 and an arcuate portion 148 ( FIG.13 ).
  • the arcuate portion 148 has a constant radius so as to avoid sharp edges which would generate non-uniformity in the distributed light, i.e. artifacts or a "prism effect.โ€
  • the arcuate portion 148 has no "optic" effect on the light passing through it, but in other embodiments could provide an optic effect, for example, to generate a primary beam like that shown in FIG. 9 .
  • the thickness of the lens 127 is determined by the selected lens material and U.L. requirements.
  • the illustrative embodiment of Fig. 11 further includes a reflector component 149, which may be made of, for example, metal or a reflective coated plastic.
  • the reflector 149 may have a parabolic contour.
  • the reflector component 149 is positioned beneath the LEDs 125 so as to redirect light from the LEDs 125 in an upward direction, thereby assisting in reflecting more useful light out of the light fixture module 123.
  • the left and right light fixture modules 123, 124 are connected together by an interconnection assembly which enable the modules 123, 124 to move linearly towards and away from each other to allow the distance between the modules 123, 124 to be adjusted, while at the same time meeting safety requirements for shielding a line voltage cable 220 as it passes between the respective base components 140, 150.
  • FIG. 15 illustrates one embodiment of such an interconnection assembly, which includes a wire transfer base component 163, a wire transfer cover 165 and a clip-on spacer 167.
  • the ridges, e.g. 162 on each outer side of the wire transfer base 163 ride in complementary slots formed on the inner sides of the base components 140, 150, allowing the wire transfer base 163 to slide in and out with respect to the base components 140, 150, to thereby vary the distance between the respective base components 140,150.
  • Bosses, e.g. 164, on the outside of the wire transfer cover 165 snap into oppositely disposed holes 166 in the wire transfer base 163.
  • the wireway cover 167 snaps into place and holds the base components 140, 150 a fixed distance apart, for example, for shipping purposes.
  • the wireway cover 167 may be removed to permit the distance between the base components 140, 150 to be decreased, after which the base components 140, 150 may be screwed or otherwise fastened to an adjacent surface to fix them into place at the selected separation distance.
  • illustrative embodiments provide a linear collapsing feature, which can assist in accommodating shorter than expected wall lengths.
  • Embodiments of an interconnection assembly enabling linear movement of adjacent modules are also taught in U.S. Patent Publication 2014/0307438, published October 16, 2014 .
  • A.C. power is introduced into the first light fixture module 123 by a male 3-pin connector 155.
  • the electrical cable 159 which exits the connector 155 is attached by a cable clamp 156 to the power input base 140 and then is clamped by and electrically connected to an electrical connector 172.
  • the electrical connectors 172 may be fabricated of first and second halves arranged to pierce the insulation of the electrical cables 159, 161, for example, as illustrated in U.S. Patent 9,458,995 .
  • the electrical connectors 172 are connected to A.C. power supply and conditioning circuitry like that illustrated in Figure 1 where power is supplied to each of two female in-line connector assemblies 72 and from there to respective A.C. power board assemblies 73.
  • the power board assemblies 73 supply conditioned A.C. power to the respective PCBs 147 via respective 4-pin by two-row connectors 75.
  • Male power pins 79 provide the return from the PCB's 147 to the A.C. wires 71 via the respective connectors 72.
  • the A.C. power feed and conditioning circuitry may be constructed as disclosed in U.S. Patent Application Serial No. 14/941,476, filed November 13, 2015 , and entitled, "Compact A.C. Powered LED Light Fixture".
  • the LEDs 125 are arranged linearly along an upper edge 148 of the board 147 and spaced equally apart.
  • the LEDs 125 may be Nichia 757 type LEDs, 0.5Watts. This positioning of the LEDs 125 assists in obtaining various desired light distribution patterns, for example, by placing the LEDs 125 near or at the height level of a cove wall, such as the cove wall 19 of FIG. 1 .
  • the LEDs 125 may be positioned one-half inch (approximately 1.3 centimetres) below the top edge 29 of the cove wall 19.
  • Figure 13 shows an illustrative embodiment of an interconnection mechanism for interconnecting a wall mount hanger or wall piece 122 with a light fixture module, e.g. 123.
  • the vertically disposed wall piece 122 has a front surface 183, which forms into a bottom hook portion 185.
  • a projection 186 from the side of the wall piece 122 further defines a horizontally running groove 188.
  • a bottom surface 184 of the light fixture module 123 is shaped to have linear lower and upper segments 187, 189 which meet an obtuse angle "A1.โ€
  • a lip 191 is formed on the upper segment 189 and fits into the groove 188.
  • first and second hooks 193, 195 are formed on the lower segment 187 ( FIG. 12 ) and interlock or engage with the bottom hook 185 of the wall piece 122.
  • the LEDs 125 are preferably placed as high as possible towards the top edge 152 of the PCB 147. In various embodiments, the closest the LEDs 125 may be placed to the top edge 152 of the PCB 147 is 30 thousandths of an inch (approximately 0.76 millimetres) due to various design considerations. Thus, according to illustrative embodiments, the proper LED angle is automatically achieved upon installation.
  • the cooperating parts are so shaped and dimensioned that the upper lip 191 may be inserted into the groove 188, which enables the hook 193 on the light fixture module 123 to snap into or otherwise come into engagement with the bottom hook 185 of the wall piece 122 so as to lock or retain the light fixture module 123 in a predetermined fixed position with respect to the wall mount hanger 122.
  • the LEDs 125 are disposed at the selected angle, for example, 20 degrees to the horizontal, as discussed above. In this manner, a tool-less interconnection and installation of the light fixture module 123 with respect to the wall piece 122 is achieved.
  • two principles may be applied: (a) place the LEDs as high as possible in a cove (low loss, optimum light output) and (b) attach the wall piece to a wall or other surface which is a predictable structural surface for fixture mounting purposes.
  • a predictable surface is one which an architect or designer can anticipate in advance will not be subject to changes during the construction phase which could disturb the desired lighting effect.
  • mounting techniques which propose to mount a cove lighting fixture on the floor or bottom surface of a ceiling cove can be unpredictable because the manner of construction may result in unexpected changes in dimensions or a ceiling cove bottom which is open, exposing studs and gaps between them.
  • FIGS. 16-20 illustrate the utility and advantages of illustrative embodiments in various applications.
  • a light fixture which employs a lens like that in FIG. 13 is used, as opposed to one with optics that would create a narrower beam such as illustrated in FIG. 9 .
  • narrow beam optics could be used in other embodiments.
  • FIG. 16 illustrates a tall wall wash embodiment where a light fixture 311 according to illustrative embodiments is mounted in the horizontal bottom 313 of a cove and positioned to throw light on a vertical wall 313.
  • the LEDs 317 of the fixture 311 are positioned at a distance "d" from the vertical wall 315. Since this distance "d" can remain the same regardless of the width "w" of the cove bottom 313, reliable pre-positioning of the light fixture 311 without the need for post-installation adjustment is facilitated.
  • FIG. 17 illustrates a dual ceiling graze embodiment with respective fixtures 311 disposed on respective side walls 322, 324, above respective horizontal cove walls 321, 323 to illuminate respective ceiling surfaces 325, 327.
  • Such an embodiment might be used, for example, down the middle of the ceiling of a room.
  • FIG. 18 show a ceiling graze embodiment where a single fixture 311 is attached to the vertical side wall 329 of a cove above a horizontal bottom cove surface 331 and positioned to illuminate a horizontal ceiling surface 333.
  • the distance "wโ€ can be varied, while the distance โ€œdโ€ from the LEDs 317 to the ceiling 333 can be held constant thereby maintaining the desired light distribution, while avoiding post-installation adjustment of the position of the fixture.
  • FIG. 19 illustrates a fixture mounted on a vertical sidewall 335 of a cove to provide indirect lighting of a horizontal ceiling 337.
  • the width "w" of the cove may vary or the bottom of the cove may be open or irregular, but the desired illumination pattern can still be achieved with the LEDs again spaced a selected fixed distance from the ceiling 337, while avoiding the need for post-installation adjustment.
  • FIG. 20 illustrates a wall wash embodiment where a fixture 311 is mounted in a horizontal ceiling 341 adjacent a vertical cove wall 343.
  • the distance between the vertical cove wall 343 and the wall 345 being illuminated may vary while the distance "d" between the LEDs and the wall 345 can be maintained the same so as to result in the desired pre-designed illumination pattern.
  • Fig. 21 illustrates a light fixture wireway module 123 with an internal micro baffle 411 positioned beneath the arcuate portion 148 of the lens 127.
  • the baffle 411 is constructed to fit into the space defined by the reflective surface of the reflector 149 and the inner surface of the arcuate portion 148 of the lens 127 of Fig. 13 .
  • the baffle 411 is illustrated in more detail in Figs. 22-25 .
  • the baffle 411 is a single piece component, which may be molded of a suitable plastic such as polycarbonate or ABS, but may be fabricated of other materials and in other manners in other embodiments.
  • the baffle 411 may have a bright white, matte finish.
  • the baffle 411 may be attached to the PCB 147 by double sided tape, guided by alignment pegs e.g. 423, which insert into suitable apertures in the PCB 147.
  • the baffle 411 of the illustrative embodiment includes a number of identically shaped baffle elements 413, positioned down the length of the baffle 411. As seen in Fig. 23 , as one proceeds down the length of the illustrative embodiment, first and second of the baffle elements 413 are joined together by a first web portion 421, and the second and third baffle elements 413 are joined by a second web portion 422 including a first rectangular recess 419, which is shaped to accommodate a first respective LED 125.
  • the third and fourth baffle elements 413 are joined by a third web portion 421 of equal length to the first web portion 421, and the fourth and fifth baffle elements 413 are joined by a fourth web portion 422 including a second rectangular recess 419 shaped to accommodate a second respective LED 125.
  • the second web portions 422 each have the same width. As may be appreciated, in the illustrative embodiment, this just described positioning of the baffle elements 413 is repeated down the length of the baffle 411.
  • the left and right most LEDs 125 of the wireway module 123 do not have a baffle element 413 positioned adjacent their respective left and right sides to provide for desired light distribution from the sides of the module 123 and to prevent casting of undesirable shadows on adjacent wall surfaces.
  • each baffle element 413 has a front surface 417 shaped to mate flushly with the reflecting surface of the reflector 149 and an arcuate surface 415 shaped to mate flushly with the interior arcuate surface of the arcuate portion 148 of the lens 123.
  • This mating interface between each baffle element 413 and the reflector 149 and lens 127 is such that no light can be transmitted from one side of a baffle element 413 to the other side of that element 413.
  • the baffle 411 may have an overall length D1 of 0.997 inches (approximately 25.32 millimetres) and a width D2 of 0.288 inches (approximately 7.32 millimetres).
  • Each of the recesses 419 may have the same width D3 of 0.301 inches (approximately 7.65 millimetres) and the same depth D7 of 0.159 inches (approximately 4.04 millimetres).
  • the recesses 419 may be centrally positioned between the adjacent baffle elements 413 such that the distance D4 on each side of a recess 419 is 0.129 inches (approximately 3.28 millimetres).
  • the distance D5 between the LED-facing surfaces of baffle elements 413 maybe 0.375 inches (approximately 9.53 millimetres), and the distance D6 maybe 0.061 inches (approximately 1.55 millimetres). Such dimensions are for illustrative purposes and may vary in other embodiments.
  • the baffle 411 serves to control lateral light distribution so as to prevent artefacts from appearing on side walls adjacent the light fixture modules 123.
  • Such side walls may occur, for example, at the end of a cove and may be perpendicular, for example, to a cove surface on which a light fixture module 123 is mounted.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (6)

  1. LED-Voutenleuchte (21), umfassend:
    eine Montageschiene (22), die eine hintere Oberflรคche aufweist, die zum Montieren an einem hinteren Abschnitt einer Voute (13) ausgelegt ist;
    eine Leuchtenkomponente (23), die an der Montageschiene (22) angebracht werden kann, umfassend eine Leiterplatte (147), auf der eine Vielzahl von LEDs (125) montiert ist, und eine lichtdurchlรคssige Abdeckung, die einen bogenfรถrmigen Abschnitt aufweist, der รผber der Vielzahl von LEDs (125) positioniert ist;
    wobei die Leuchtenkomponente (23) weiter konfiguriert ist, um mit der Montageschiene (22) ineinander zu greifen, um Licht aus der Voute (13) in einem festen Winkel in Richtung einer Decke eines Raums zu projizieren, wenn sie an der Montageschiene (22) angebracht ist;
    wobei die Leuchtenkomponente (23) weiter einen Reflektor (149) umfasst, der innerhalb der lichtdurchlรคssigen Abdeckung und unterhalb der LEDs (125) positioniert ist, um Licht, das von der Vielzahl von LEDs (125) ausgeht, durch die lichtdurchlรคssige Abdeckung nach auรŸen umzuleiten, um die aus der Voute (13) austretende Lichtmenge zu erhรถhen;
    und weiter umfassend eine Ablenkplatte (411), die unterhalb des bogenfรถrmigen Abschnitts der lichtdurchlรคssigen Abdeckung angeordnet ist, wobei die Ablenkplatte (411) eine Vielzahl von Ablenkelementen (413) aufweist, wobei eine Vielzahl von Paaren der Ablenkelemente (413) durch einen Stegabschnitt (422) mit einer Vertiefung (419) darin zusammengefรผgt ist, wobei sich eine der Vielzahl von LEDs (125) in jeder Vertiefung (419) befindet, wobei jedes Ablenkelement (413) erste (415) und zweite (417) Oberflรคchen aufweist, die geformt sind, um jeweils zu einer Innenoberflรคche des bogenfรถrmigen Abschnitts der lichtdurchlรคssigen Abdeckung und einer reflektierenden Oberflรคche des Reflektors zu passen.
  2. LED-Voutenleuchte (21) nach Anspruch 1, wobei jedes Ablenkelement (413) bรผndig mit der Innenoberflรคche des bogenfรถrmigen Abschnitts und bรผndig mit der reflektierenden Oberflรคche zusammenpasst, so dass kein Licht innerhalb der lichtdurchlรคssigen Abdeckung von einer Seite eines Ablenkelements (411) auf die andere Seite dieses Ablenkelements (411) รผbertragen werden kann.
  3. LED-Voutenleuchte (21) nach Anspruch 1, wobei, wenn man eine Lรคnge der Ablenkplatte (411) hinuntergeht, erste und zweite Ablenkelemente (413) durch einen ersten Stegabschnitt (421) zusammengefรผgt sind, zweite und dritte Ablenkelemente (413) durch einen zweiten Stegabschnitt (422), der eine erste Vertiefung (419) einschlieรŸt, zusammengefรผgt sind, die geformt ist, um eine erste jeweilige LED (125) unterzubringen, dritte und vierte Ablenkelemente (413) durch einen dritten Stegabschnitt (421) von gleicher Lรคnge wie der erste Stegabschnitt (421) zusammengefรผgt sind und vierte und fรผnfte Ablenkelemente (413) durch einen vierten Stegabschnitt (422), der eine zweite Vertiefung (419) einschlieรŸt, zusammengefรผgt sind, die geformt ist, um eine zweite jeweilige LED (125) aufzunehmen.
  4. LED-Voutenleuchte (21) nach Anspruch 1, wobei die Leuchtenkomponente (23) konfiguriert ist, sodass 85% oder mehr des von den LEDs (125) erzeugten Lichts die Voute (13) verlรคsst, wenn die Montageschiene (22) am hinteren Abschnitt der Voute (13) montiert ist und die Leuchtenkomponente (23) an der Montageschiene (22) angebracht ist.
  5. LED-Voutenleuchte (21) nach einem der Ansprรผche 1 bis 4, wobei die Ablenkplatte (411) durch doppelseitiges Klebeband an der Leiterplatte (147) angebracht ist, das durch Ausrichtungsstifte (423) gefรผhrt wird, die in geeignete ร–ffnungen in der Leiterplatte (147) eingesetzt sind.
  6. LED-Voutenleuchtsystem (11), umfassend:
    eine Voute (13), die sich unterhalb einer Decke eines Raumes befindet, wobei die Voute (13) einen hinteren Abschnitt aufweist, der von einer vorderen Wand beabstandet ist; und
    die LED Voutenleuchte (21) nach einem der Ansprรผche 1 bis 5.
EP18197268.8A 2017-10-05 2018-09-27 Led-voutenleuchtsystem mit mikroquerlamellen Active EP3467372B1 (de)

Applications Claiming Priority (1)

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US15/725,834 US10352509B2 (en) 2016-04-09 2017-10-05 Adaptive LED cove lighting system with micro baffle

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EP3467372B1 true EP3467372B1 (de) 2020-10-21

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Publication number Priority date Publication date Assignee Title
EP1442251B1 (de) * 2001-11-01 2007-10-17 Koninklijke Philips Electronics N.V. Leuchte und leuchtenraster fรผr solche leuchte
US7824056B2 (en) * 2006-12-29 2010-11-02 Hussmann Corporation Refrigerated merchandiser with LED lighting
EP2662612B1 (de) * 2007-12-27 2018-07-25 Nichia Corporation Beleuchtungsvorrichtung, Beleuchtungseinheit und Halterung
US7726840B2 (en) 2008-03-04 2010-06-01 Tempo Industries, Inc. Modular LED lighting fixtures
US8210724B2 (en) * 2008-03-24 2012-07-03 I/O Controls Corporation Low glare lighting for a transit vehicle
US8864347B2 (en) 2012-04-17 2014-10-21 Tempo Industries, Llc Concatenatable linear LED lighting fixtures
US9429283B2 (en) 2013-04-15 2016-08-30 Tempo Industries, Llc Adjustable length articulated LED light fixtures
US9458995B1 (en) 2015-04-10 2016-10-04 Tempo Industries, Llc Wiring rail platform based LED light fixtures
DE202016002197U1 (de) * 2016-04-01 2016-06-06 Osram Gmbh Direktstrahlende LED-Leuchte mit Entblendungsoptik

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