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
  • F21V3/00—Globes; Bowls; Cover glasses
• • 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
  • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
• • 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
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V3/00—Globes; Bowls; Cover glasses
  • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
• • 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
  • F21V3/00—Globes; Bowls; Cover glasses
  • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
  • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
• • 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
  • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
• • 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
  • F21V7/04—Optical design
  • F21V7/048—Optical design with facets structure
• • 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
  • 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
• • 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
• • 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
  • F21Y2105/00—Planar light sources
• • 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]
• • 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]
  • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

• the present invention relates to a lamp with a cover and in particular an outdoor lamp, such as a street or patio lamp with a cover.
• flat cover plates have the disadvantage that at a shallow angle from the light source to the light exit plane of the lamp striking rays from the cover are reflected in the reflector and reflected back into the lamp and can not escape.
• the luminaire according to the invention comprises at least one light source arranged in a housing with at least one light exit opening and at least one reflector which is shaped in such a way that the light coming from the light source is divided into at least two light bundles, the light exit opening being at least partially covered by a cover panel , which has two surface portions on which the respectively corresponding light beams impinge, wherein the surface portions are shaped so that the majority of each directed onto a surface portion light beam on the surface portion impinges at an incident angle which is smaller than 60 ° to the Reflections on the cover to reduce.
• the reflections on the cover are reduced because the cover is shaped so that the largest possible portion of the light impinges on the cover at an angle of incidence, which is associated with a low reflectance and in which the transmission of light through the Cover is as high as possible or maximized.
• the cover plate is shaped so that its surface curve follows exactly the angular distribution of the light coming from the primary optics of the luminaire, so that all rays of light impinge on the cover plate at an angle of 90 ° or an angle of incidence of 0 °.
• the angle of incidence here is the angle between the surface normal on the surface of the cover disk and the direction of the incident light.
• the cover can be designed so that it has only a small height above the primary optics of the lamp, so that as little light is emitted in the rear region behind the reflector or in the sky.
• the radiated in the rear region of the lamp behind the reflector light can be additionally reduced by an edge on the housing of the lamp, which may also be formed by a housing projection.
• An emission of 0% in the rear region of the lamp can be further achieved by the cover protrudes at any point beyond the edge of the housing of the lamp or from the light exit opening formed by the edge of the housing.
• the cover according to the invention is particularly suitable for point light sources, such as LEDs, LED arrays or OLEDs, and reflectors that generate a plurality of substantially independent light bundles and thus operate different angular ranges.
• conventional light sources such as high pressure lamps may also be used.
• the part of the light beam impinging on the surface section at the relevant angle of incidence comprises more than 75%, more than 90% or more than 95% of the light current directed onto the surface section.
• the surface portion is shaped so that the incident thereon light beam having an incidence angle of at least 45 ° or less, at least 30 0 or less, at least 20 0 or less or 10 is 0 or less impinges.
• the angle of incidence is the angle between the surface normal on the surface portion and the direction of the incident light.
• the surface portion is convex or concave, curved or curved or has the shape of a wave with a linear or bent Kirdem vertex.
• a waveform is considered as the waveform that extends in cross section between two minima over a maximum or between two maxima over an intermediate minimum.
• the surface section in cross section in the form of a curve with an extremum wherein the curve is symmetrical or asymmetrical with respect to the extremum. If the curve is asymmetrical, this means that the curve has a greater slope on one side of the extremum than on the other side. As a result, in particular unbalanced angular distributions of the light in a light bundle can be taken into account.
• the extremum can be a maximum or a minimum. decision speaking the surface portion has a convex or concave shape. In a plan view, the surface portion may have a symmetrical, round, elliptical, angular, in particular rectangular, square, polygonal or asymmetrical shape.
• the luminaire comprises one or more reflectors which generate more than two light bundles, the cover disc having a number of associated surface sections corresponding to the number of light bundles.
• the surface portions may have the same shape and together may form the entire surface of the cover.
• the luminaire comprises a plurality of reflectors arranged in a row with these respectively assigned light sources, wherein the light bundles of adjacent reflectors coming from the reflectors overlap.
• various desired light intensity distribution curves of the luminaire can be achieved.
• the reflector in the form of a bent tube with two light exit openings at the ends, wherein the light source is arranged in the middle of the tube. Further details regarding a reflector according to this embodiment are disclosed in German patent application 10 2010 007 774.7. The scope of this disclosure with respect to the reflector is included in the disclosure of the present patent application.
• the reflector has funnel-shaped openings, in particular at the ends of the bent tube.
• the light source comprises one or more LEDs, LED arrays or OLEDs.
• the cover plate is rectangular or round and comprises a corrugated shape with two or more shaft maxima extending linear or annular, in particular rotationally symmetrical.
• Such a cover is particularly suitable for a lamp with a rectangular or round housing and corresponding linear or annular, in particular rotationally symmetrical arranged reflectors to cover a corresponding light exit opening, which are generated in the luminaire side by side arranged reflectors of the corrugated shape of the cover corresponding light bundles ,
• the light bundles can also be superimposed in a corresponding annular arrangement of the reflectors to form an annular light beam.
• the cover plate is provided with an antireflection coating or treated antireflecting. As a result, the Refiexionsgrad the light on the cover can be further reduced.
• FIG. 1 shows a lamp according to an exemplary embodiment of the invention with a cover plate in cross section.
• Fig. 2 shows the lamp according to the embodiment shown in Figure 1 in a perspective view from below.
• Fig. 3 shows two graphs showing the reflectance and the transmission as a function of the angle of incidence on a transparent surface for perpendicular (Fig. 3a) and parallel (Fig. 3b) polarized light.
• the luminaire according to the invention will be described with reference to an exemplary embodiment with reference to FIGS. 1-3.
• the luminaire 1 according to the embodiment shown comprises a housing 1, on the upper side of which an LED module housing 2 is arranged. At the LED module housing 2 a plurality of reflectors 4 are mounted side by side.
• the tubular reflectors 4 each comprise a tube longitudinally centered in a tube.
• a light source 3 which may comprise, for example, one or more LEDs, is arranged on the LED module housing 2. From the constriction to the annular light exit openings 6, the tube expands in a funnel shape. A proportion of at least 10% of the emitted total luminous flux of the LEDs can emerge from the light exit openings 6 without reflection on the reflector surface as a beam.
• the reflection surface in the interior of the tube is partially or completely faceted.
• this three-zone reflector due to its tubular design produces two light bundles which emerge at the light exit openings of each reflector 4.
• the light bundles which overlap one another
• the light intensity emitted directly below the light source 3 is reduced, since light emitted vertically from the light source 3 hits the reflector 4 and laterally under, for example, the light emission openings 6
• the radiation characteristic of the luminaire 1 is such that a substantial proportion of light is emitted in the direction of the two longitudinal sides of the luminaire 1. Accordingly, a large proportion of light at a shallow angle emerges from the light exit 6 openings.
• a cover 5 is arranged at the bottom of the housing 1.
• the cover 5 may be made of glass or plastic.
• the cover plate 5 comprises two wave-shaped surface portions 5a, 5b.
• the crests of the waves of the surface portions 5a, 5b extend parallel to the longitudinal side of the lamp 1, as can be seen in Fig. 2.
• the two surface portions 5a, 5b are interconnected by a trough.
• the cover 5 has a small height, so that the proportion of the light emitted from the cover 5 on the back of the lamp 1 scattered light remains low.
• the edge of the housing of the lamp 1 shown in FIGS. 1 and 2 may be extended in the direction transverse to the cover to the height of the vertexes of the waves of the cover 5, so that the cover 5 at any point on the through the edge of the Cover disc 5 formed light Outlet of the light 1 protrudes to achieve a 0% emission in the backward richness of the light 1 or the sky.

Landscapes

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

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44201217

Family Applications (1)

Country Status (9)

Cited By (2)

Families Citing this family (6)

Citations (4)

Family Cites Families (58)

• 2010
  • 2010-04-07 DE DE102010014099A patent/DE102010014099A1/de not_active Ceased
• 2011
  • 2011-04-06 JP JP2013503036A patent/JP5788966B2/ja not_active Expired - Fee Related
  • 2011-04-06 EP EP11715405.4A patent/EP2556290B8/de active Active
  • 2011-04-06 CA CA2794549A patent/CA2794549A1/en not_active Abandoned
  • 2011-04-06 US US13/639,800 patent/US9759401B2/en not_active Expired - Fee Related
  • 2011-04-06 WO PCT/EP2011/001713 patent/WO2011124372A1/de not_active Ceased
  • 2011-04-06 CN CN201180018098.8A patent/CN102947641B/zh not_active Expired - Fee Related
  • 2011-04-06 BR BR112012025348A patent/BR112012025348A2/pt not_active IP Right Cessation
  • 2011-04-06 MX MX2012011587A patent/MX2012011587A/es active IP Right Grant

Patent Citations (4)

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