IPC分类号：
F21V11/14 | G09F13/06 | F21V11/16
国民经济行业分类号：
C4350 | C3874 | C4090 | C3879
当前申请(专利权)人：
SIGNIFY HOLDING B.V.
原始申请(专利权)人：
PHILIPS LIGHTING HOLDING B.V.
发明人：
DIJKEN, DURANDUS, KORNELIUS | TALGORN, ELISE, CLAUDE, VALENTINE | BOOIJ, SILVIA, MARIA | THIJSSEN, JOHANNES, MARIA
摘要：
The invention provides a lighting device (12) configured to provide both functional lighting for illuminating a space, and simultaneously to present a spatially dynamic sparkling light display. The device comprises a chamber (14) containing one or more light sources (28). The light sources are arranged to direct light in the direction of a translucent surface portion (20), and in the direction of a plurality of light exit areas (32) delimited by the translucent surface portion. The light exit areas each have a higher transmittance than the surrounding surface portion.
技术问题语段：
The technical problem addressed in this patent text is the need for a lighting device that can create a true spatially dynamic sparkling light effect, while being more compact, cheaper, lighter, and simpler than alternative solutions. Additionally, the lighting device should also provide a functional light source for lighting a space, and should be able to achieve a true sparkling effect without the need for light sources to be installed at a distance from the panel.
技术功效语段：
The lighting device described in this patent creates a unique effect for the observer by producing light at different positions that reduces or changes in intensity or color. The device includes optical elements that deflect or absorb some of the light emitted by the main sources to achieve this effect. This allows the device to direct light of a certain color and angle, making it possible to create a complex and visually interesting lighting pattern.
权利要求：
1. A lighting device (12) for simultaneously providing functional lighting for illuminating a space and a dynamic sparkling or glittering effect, wherein the lighting device comprises an exposed outer surface and a plurality of primary light sources (28) disposed within a chamber (14), wherein the chamber has an internal surface arrangement including at least a first surface portion and an opposing second surface portion, the first surface portion being a mounting surface portion (30), the plurality of primary light sources (28) comprising LEDs that are mounted to the mounting surface portion (30), the second surface portion being translucent and delimiting a plurality of light exit areas (32) having a higher transmittance than the second surface portion, wherein the plurality of light exit areas (32) comprises a first pattern of light exit areas, the plurality of primary light sources (28) comprises a second pattern of primary light sources, the second pattern of primary light sources being different to the first pattern of light exit areas, and wherein the plurality of primary light sources (28) is arranged to illuminate the plurality of light exit areas (32) delimited by the translucent second surface portion in order to create a plurality of secondary light sources located on the exposed outer surface of the lighting device (12), each of the plurality of secondary light sources having a light-emitting surface with an anisotropic luminance, characterized in that the plurality of primary light sources (28) comprises at least a first subset of primary light sources and a second subset of primary light sources, the first subset of primary light sources being configured to emit light that is directly incident at one or more of the plurality of light exit areas (32), and the second subset of primary light sources being configured to emit light that is not directly incident at any of the plurality of light exit areas (32).
2. A lighting device (12) as claimed in claim 1, wherein each of the LEDs and each of the light exit areas (32) has a size that is smaller than a separation distance between any two neighboring LEDs, and wherein at least one of the first pattern of light exit areas and the second pattern of primary light sources is an irregular or semi-random pattern.
3. A lighting device (12) as claimed in claim 1, wherein one or more internal surfaces of the chamber (14) are at least partially reflective and optionally wherein said internal surfaces are bounding internal surfaces.
4. A lighting device (12) as claimed in any preceding claim, further comprising one or more optical elements (36) each arranged in optical communication with one or more of the plurality of light exit areas (32), wherein each optical element is adapted to absorb, deflect or refract a portion of the light incident at them.
5. A lighting device (12) as claimed in claim 4, wherein each optical element (36) is directly coupled to or is comprised by one or more of the plurality of light exit areas (32).
6. A lighting device (12) as claimed in claim 1, wherein the output intensity of each of the first and second subsets of primary light sources is independently adjustable.
7. A lighting device (12) as claimed in claim 6, wherein the lighting device (12) further comprises a controller configured to adjust the output intensity of the first subset of primary light sources in dependence upon the output intensity of the second subset of primary light sources.
8. A lighting device (12) as claimed in any preceding claim, wherein the lighting device (12) further comprises a translucent front panel (37) positioned directly opposing an exterior side of said translucent second surface portion, and a space in between the translucent front panel (37) and the translucent second surface portion.
9. A lighting device (12) as claimed in claim 8, wherein the space in between the translucent front panel (37) and the translucent second surface portion is configured to receive and/or at least partially retain a light transmissive fluid.
10. A lighting device (12) as claimed in any preceding claim, wherein the plurality of primary light sources (28) comprises a first set of primary light sources (40) adapted to emit light of a first spectral composition, and a second set of primary light sources (42) adapted to emit light of a second spectral composition, wherein the chamber (14) is arranged to at least partially mix the light of the first spectral composition with that of the second spectral composition.
11. A lighting device (12) as claimed in any preceding claim wherein the translucent second surface portion comprises one or more shaped opaque regions for patterning the light output from the lighting device (12) and/or wherein the lighting device (12) comprises a front panel element comprising one or more shaped opaque regions for patterning light output from the lighting device (12).