Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
  • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
• • 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
• • 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
  • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
  • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
• • 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
  • F21V19/00—Fastening of light sources or lamp holders
  • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
• • 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
  • F21V21/14—Adjustable mountings
  • F21V21/30—Pivoted housings or frames
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
  • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• • 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
  • F21S8/08—Lighting devices intended for fixed installation with a standard
  • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
• • 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
  • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
  • F21W2131/10—Outdoor lighting
  • F21W2131/103—Outdoor lighting of streets or roads

Definitions

• the technical field of the present disclosure relates to lighting devices.
• Lighting fixtures such as luminaires, such as ceiling lights or pendant lights, are known for room lighting.
• lighting fixtures with mercury-containing light sources such as fluorescent lamps or halogen lamps
• Efficient and versatile LED solutions offer a climate-friendly and future-proof alternative to the prohibited light sources.
• fluorescent lamps such as ring-shaped mercury-containing fluorescent lamps
• there are no LED replacement lamps that offer the same light distribution or would enable the same functionality in dimming mode or emergency lighting operation. This renders the existing luminaires or lighting systems installed in ceilings unusable. Instead of converting existing systems, a completely new lighting system is often planned, with new luminaires and new installation points on the ceiling, which involves considerable technical and financial effort.
• An object of the present application is to provide a lighting device which enables a simple and cost-effective conversion of existing lighting systems.
• the lighting device comprises a number of spotlights, in particular LED spotlights, each with a predefined beam angle and a predefined main beam direction.
• the spotlights are arranged essentially in a ring around an axis of symmetry such that the main beam directions of the spotlights are inclined away from the axis of symmetry by a predefined angle of inclination to expand the maximum beam angle of the lighting device.
• the beam characteristics or the aperture angle of the spotlights can be selected in such a way that the light cones generated by the spotlights overlap. This makes it possible to achieve large-area room illumination or soft room light with smooth brightness transitions.
• the inclination of the spotlights allows for larger illumination areas to be covered and significantly better illumination uniformity to be achieved.
• the lighting device can largely simulate the radiation characteristics of a lighting device with an annular fluorescent lamp as the light source, so that the lighting device can serve as a replacement for lighting devices based on annular fluorescent lamp.
• the lighting device thus makes it possible to do without luminaires based on mercury-containing fluorescent lamps without having to completely redesign the lighting or significantly impairing the radiation characteristics of the luminaires.
• the radiators are designed to be replaced without tools. Because the radiators can be replaced without tools, they can be replaced particularly easily and quickly when needed.
• Fig. 1 shows a schematic front view of a lighting device according to an exemplary embodiment.
• the lighting device 1 comprises a cover plate 2 with a central opening 3 and spotlights 4, wherein the spotlights 4 are arranged on the cover plate 2 in a ring around the central opening 3.
• the spotlights 4 are designed as so-called LED spotlights and each comprise an LED light source 5 and beam-forming optics 6 consisting of a transparent optic (lens) and a reflector for forming a light with a predefined radiation characteristic.
• the slots 8 are designed to accommodate mounting elements, such as mounting pins and/or screws, and have a length of 50 mm and a width of 5.6 mm.
• the slots 8 are radially aligned and arranged diametrically opposite each other at a distance of 116 mm from each other.
• Fig. 3 shows a schematic side view of the lighting device according to Fig. 1 .
• the mounting plate 7 has adjustable feet 14, with which the mounting plate 7 is fastened to the supports 13.
• the supports 13 and the adjustable feet 14 are dimensioned such that a distance of approximately 131.50 mm exists between the mounting plate 7 and the cover plate 2. This ensures, in particular, that the lighting device fits into a designated installation space and that sufficient space remains for handling mounting devices during installation of the lighting device.
• supports 15 of the radiators can be seen, which are designed to hold the radiators 4 in a position inclined by an angle of 10°.
• the supports 15 are in particular designed so that they can serve both as beam-forming elements 5 for shaping the radiation characteristics of the radiators 4 and as supporting elements for fixing the radiators at a predetermined angle of inclination.
• the lighting device 1 has a maximum beam angle or total opening angle of 56°, which is due both to the opening angles of the individual radiators 4 and to the inclination of the radiators 4 with respect to the axis of symmetry of the lighting device 1.
• the maximum beam angle of the lighting device can be extended, so that a wider beam characteristic of the entire lighting device 1 can be achieved than of the individual spotlights or spots.
• Fig. 4 shows schematically a perspective rear view of the lighting device according to Fig. 1 . As can be seen from the perspective representation of the Fig. 4 As can be seen, there is a clear space 16 between the individual components of the lighting device 1, which is accessible through the central opening 3.
• the clear space 16 can be used in particular during the installation of the lighting device 1, for example, to mount the mounting plate 7 to the ceiling of a room. Furthermore, the clear space 16 provides space for the electrician to connect, for example, the electrical connections 9 and/or the driver 12 to a power supply.
• Fig. 5 shows a perspective front view of the lighting device according to an embodiment.
• the lighting device 1 has a central module 17 accommodated in the central opening 3.
• the central module 17 can comprise a decorative cover, a warning light, a signal light, a ventilation grille, a communication module, and/or another functional element.
• the radiators 4 each have a radiation angle of 30° to 45°, in particular of 33° to 39°, especially of 35° to 37°.
• the overall radiation characteristics of the lighting device 1 can be influenced by the inclination of the spotlights 4.
• the maximum radiation angle of the lighting device 1 can be increased due to the inclination of the spotlights 4.
• the lighting performance of the lighting device was verified by simulating a lighting system with lighting devices each containing six spotlights, each with an inclination angle of 10° and each with a light output of 450 lm.
• the lighting of the room is characterized by the spatial distribution of the illuminance, which is Fig. 6 is visualized as an isolux diagram for a room area with five lighting devices 1, each with six spotlights 4.
• the spotlights 4 are in Fig. 6 shown as dark dots.
• FIG. 6 Simulation results for two different cases are shown.
• the upper image corresponds to the case where the spotlights 4 of the lighting devices are tilted outward at an angle of 10° from the symmetry axis of the lighting devices.
• the upper illuminance distribution exhibits significantly greater homogeneity than the lower illuminance distribution.
• the illuminance in the upper diagram exhibits a smaller variation from 250 lx to 450 lx.
• the lower diagram exhibits a greater variation in illuminance from 200 lx to 500 lx.
• the lower diagram exhibits clearly pronounced hotspots with locally increased illuminance, particularly directly below the lighting devices 1.
• the number, inclination and beam characteristics of the spotlights can be selected differently.
• the existing recessed luminaires do not have to be completely removed or replaced.
• the existing housings of the luminaires being replaced can also be recycled.
• the existing light source such as a ring-shaped fluorescent lamp
• the existing light source can be removed from the already installed luminaire in a first step.
• a cover must first be removed to gain access to the light source.
• the driver 12 can be connected to a power supply, and the electrical connections 9 can be electrically connected to the driver 12.
• the central opening 3 provides access to the intermediate space 16, allowing the electrician to easily perform these actions.
• the lighting device can be designed as a recessed, in particular recessed ceiling luminaire, a surface-mounted, in particular surface-mounted ceiling luminaire, and/or as a pendant luminaire. It is also conceivable for the spotlights to have a tilt adjustment mechanism so that the tilt angle can be adjusted depending on the application or operating conditions. The tilt adjustment mechanism can also be designed so that the tilt angles of all spotlights remain the same when adjusting the tilt angles. Thus, the light distribution of the lighting device 1 can maintain its symmetrical shape and the illumination of the entire half-space.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=90097795

Family Applications (1)

Country Status (1)

Citations (4)

• 2024
  • 2024-02-12 EP EP24315046.3A patent/EP4600545A1/fr active Pending

Patent Citations (4)

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