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A lighting fixture that has a plurality of differently fashioned regions wherein different light emission properties occur. The fixture includes at least one hollow light guide having a cavity, one or more bulbs that emit light into the cavity of the hollow light guide, and at least one light output

A lighting fixture that has a plurality of differently fashioned regions wherein different light emission properties occur. The fixture includes at least one hollow light guide having a cavity, one or more bulbs that emit light into the cavity of the hollow light guide, and at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face. The light output device forms at least a part of the wall of the hollow light guide and the light of at least one bulb that directs light into the hollow light guide is beamed out in different regions of the lighting fixture that have different light emission properties.

대표청구항 ▼

1. A lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a lig

1. A lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device comprising a plurality of components having different light-refractive structures and forming at least a part of a wall of the hollow light guide and the fixture having a plurality of differently fashioned regions having different light emission properties. 2. A lighting fixture according to claim 1, wherein the light output device includes a plurality of regions having different light-refractive structures for light output.3. A lighting fixture according to claim 1, wherein the light output device comprises a sub-region without a light-refractive structure that deflects the passing light in a directed fashion.4. A lighting fixture according to claim 3, wherein the light output device comprises no light-refractive structure that deflects the passing light in a directed fashion in a sub-region so that an element that limits one of the luminous intensity or color is effective.5. A lighting fixture according to claim 2, wherein a first region of the light output device has prism elements with prism angles of more than 90° and a second region of the light output device has prism elements with a prism angle of 55° to 80°.6. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide, and light of the at least one lamp being directed into the hollow light guide and being directed out of the different regions of the lighting fixture having the different light emission properties, said lighting fixture comprising at least two wall regions being positioned along a lamp axis and extending opposite the light output device and each of said wall regions having a reflective wall with a different structure, so that the reflective wall of one of the at least two wall regions reflects the light of the lamp onto the output device differently than the reflective wall of the other of the at least two wall regions. 7. A lighting fixture according to claim 6, wherein the reflective walls comprise curved surfaces or planar surfaces and wherein the walls may be inclined relative to each other.8. A lighting fixture according to claim 6, which includes a reflective wall extending opposite the light output device, said wall has wall regions positioned along a direction extending along an axis of the lamp, said wall regions having different inclinations relative to each other.9. A lighting fixture according to claim 8, wherein the lamp directs light only at part of the wall regions of the reflective wall.10. A lighting fixture according to claim 1, wherein said plurality of differently fashioned regions of said fixture comprises a plurality of differently fashioned regions of the hollow light guide and the light being emitted through the light output device has different properties in different regions.11. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wa ll of the hollow light guide and light of the at least one lamp being directed into the hollow light guide and being directed out of the different regions of the lighting fixture having the different light emission properties and comprising at least two regions having a reflective wall extending opposite the light output device, in a first region, the reflective wall being directed relative to the lamp so that the light incident onto the reflective wall from the lamp is incident essentially at a surface facing toward the cavity and is reflected into the cavity, and, in a second region, the light of the same lamp incident onto the reflective wall of the second region is reflected at least partially onto a side facing away from the cavity and is reflected away from the cavity for output as an indirect light part. 12. A lighting fixture have a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide, and the light exit face comprising a first region having a first average luminous intensity and a second region adjoining the first region and having a second average luminous intensity that is lower than the first average luminous intensity. 13. A lighting fixture according to claim 12, wherein a device that reduces the light intensity of the light output via a light output device in a sub-region of the light output device is provided in the cavity near or adjacent the light output device.14. A lighting fixture according to claim 13, wherein a partially light-transmitting element is arranged in the inside of the cavity at a distance from the light output device, said element reducing the light intensity of the light incident onto a sub-region of the light output device.15. A lighting fixture according to claim 13, wherein an element is arranged in the inside of the cavity of the hollow light guide spaced from the light output device, said element being arranged between the light output device and a wall lying opposite the light output device and extending over a sub-region of the cavity, said element being reflective at a side facing toward the light output device and at a side lying opposite this side.16. A lighting fixture according to claim 13, wherein a light intensity distribution curve in the region having a reduced luminous intensity covers a larger angular range than in the region having luminous intensity.17. A lighting fixture according to claim 12, wherein an element that reduces the light is provided adjacent the light-refractive structure in a sub-region in the light output device.18. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide, the light exit face having a first region and a second region adjoining the first region, and coloring means so that the emerging light of the second region has a different color than that in the first region and the light of the at least one lamp is directed out of the different regions of the lighting fixture. 19. A lighting fixture according to claim 18, wherein a coloring device for producing a specific color of the light emerging from the light output device is provided in the cavity adjacent a sub-region of th e light output device.20. A lighting fixture according to claim 19, wherein the light output device comprises a planar, light-transmissive element that is constructed at least partially with coloring so that the coloring region of this element forms a sub-region of the light output device.21. A lighting fixture according to claim 18, wherein a coloring element that modifies the color of the light incident onto a sub-region of the light output device is arranged in the inside of the cavity at a distance from the light output device.22. A lighting fixture according to claim 19, wherein an element reflective at both sides is arranged in the inside of the cavity spaced from the light output device, said element being arranged between a light output device and a wall lying opposite the light output device and extending over a sub-region of the cavity with the side of said element facing toward the light output device being provided with a coloring function.23. A lighting fixture according to claim 18, wherein an element of the light output device is followed by a color-selective device that modifies the color of the emerging light on a part of the light exit face.24. A lighting fixture according to claim 18, wherein a luminous intensity in a region of the light exit face is lower in a region where chromatic light is output than in a region where whit light is output.25. A lighting fixture according to claim 1, wherein said light output device includes a plurality of regions having different light-refractive structures for light output wherein each region includes prism elements having uniform prism angles throughout the region.26. A lighting fixture according to claim 1, wherein said lamp is positioned adjacent said cavity along one side thereof.27. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide, the lighting fixture having a plurality of regions having different light emission properties, wherein the longitudinal axis of said lamp is transverse to said regions. 28. A lighting fixture according to claim 27 wherein the length dimension of said lamp is less than the length dimension of said fixture.29. A lighting fixture according to claim 28, wherein said lamp is positioned with one end thereof adjacent one end of said fixture.30. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp the emits light into the cavity of the hollow light guide, the at least one lamp being a straight lamp, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide and the light output device including a first region having first light-refractive structure and a second region having a second light refractive structure different from the first light refractive structure, said first region at least partly surrounding the second region so that light of the at least one lamp is directed out of the different regions of the lighting fixture. 31. A lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output de vice forming at least a part of a wall of the hollow light guide and the fixture having a plurality of differently fashioned regions having different light emission properties, said plurality of differently fashioned regions of said fixture comprising a plurality of differently fashioned regions of the hollow light guide so that light being directed out of different regions of the lighting fixture have different light emission properties and the light emitted at the light exit face of the lighting fixture in a first region has a symmetrical light intensity distribution curve and in a second region has an asymmetrical light intensity distribution curve. 32. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide and light of the at least one lamp being directed into the hollow light guide and being directed out of the different regions of the lighting fixture having different light emission properties, wherein the longitudinal axis of said lamp is transverse to said regions. 33. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide and light of the at least one lamp being directed into the hollow light guide and being directed out of the different regions of the lighting fixture having different light emission properties, wherein said light output device comprises a sub-region having no light-refractive structure that deflects the passing light in a directed fashion so that an element that limits one of the luminous intensity or color is effective. 34. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide and light of the at least one lamp being directed into the hollow light guide and being directed out of the different regions of the lighting fixture having different light emission properties, and a reflective wall extending opposite the light output device, said wall having wall regions positioned along a direction extending along an axis of the lamp, said wall regions having different inclinations relative to each other, wherein the lamp directs light only at part of the wall regions of the reflective wall. 35. A lighting fixture having a plurality of differently fashioned regions having different light emission properties, said fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide and light of the at least one lamp being directed into the hollow light guide and being directed o ut of the different regions of the lighting fixture having different light emission properties, wherein said plurality of differently fashioned regions of said fixture comprises a plurality of differently fashioned regions of the hollow light guide and the light being emitted through the light output device has different properties in different regions. 36. A lighting fixture comprising at least one hollow light guide having a cavity, at least one lamp that emits light into the cavity of the hollow light guide, at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face, the light output device forming at least a part of a wall of the hollow light guide, said hollow light guide and said light output device forming a plurality of differently fashioned regions having different light emission properties for directing light of the at least one lamp out of said fixture having different lighting characteristics when observed from different locations relative to said fixture. 37. The lighting fixture of claim 36 wherein said light output device comprises a plurality of components having different light-refractive structures.