WO2021098924A1 - Lamp reflector for indirect illumination - Google Patents

Lamp reflector for indirect illumination Download PDF

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Publication number
WO2021098924A1
WO2021098924A1 PCT/DK2020/050313 DK2020050313W WO2021098924A1 WO 2021098924 A1 WO2021098924 A1 WO 2021098924A1 DK 2020050313 W DK2020050313 W DK 2020050313W WO 2021098924 A1 WO2021098924 A1 WO 2021098924A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
light
lamp housing
illuminated
lamp
Prior art date
Application number
PCT/DK2020/050313
Other languages
French (fr)
Inventor
Lars Vestgaard ANDERSEN
Original Assignee
Lite A/S
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lite A/S filed Critical Lite A/S
Publication of WO2021098924A1 publication Critical patent/WO2021098924A1/en

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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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21S8/088—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device mounted on top of the standard, e.g. for pedestrian zones
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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]

Definitions

  • the present invention relates to a lamp reflector for indirect lighting for streetlights.
  • Street and/or park lighting poles, lamps and fittings make a major impact on the ap pearance of the road scheme/urban design, and should be planned as part of the over all design concept from the initial stage.
  • the aesthetic design and quality of the street and/or park lighting installation is becoming a big issue when planning a city infra- structure. At the same time equal care should be taken to avoid light pollution and glare light.
  • Glare makes it difficult to see in the presence of bright light from lamps. Glare is caused by a significant ratio of luminance from a glare source. This is causing prob- lems at night for the drivers, cyclists and pedestrians. This might cause very danger ous situations in the traffic.
  • Lamp lighting design and public perception of both the lamp and the light is often a big issue and a big challenge for designers and manufacturers, especially in street lamp design.
  • the requirements to ensure public safety and energy efficiency are high and very complicated to achieve. If the lamp is not designed correctly, the risks of night time accidents, crime and vandalism will increase, and maintenance costs will be huge.
  • the result of a lamp design makes a big impact on the night-time environment.
  • Object of the Invention Consequently it is an object of the invention to provide a lamp using one point of light source to illuminate the sphere of the lamp as well as the surroundings to be illuminat ed provided by indirect lighting.
  • the present invention addresses this by providing lamp housing for indirect illumina- tion, wherein the lamp housing comprises: - at least one top member having a top plate and a retaining bracket, where the retain ing bracket is arranged along an edge of the top plate,
  • the bottom member houses at least one light source, where in the at least one light source is capable of emitting light in a direction away from the bottom member towards the top member,
  • At least one transparent member extends from an outer perimeter of said retaining bracket to an outer perimeter of said bottom mem ber
  • At least one illuminated member is arranged between said top plate and said retaining bracket, which provides a lighting strip along the edge of said top member
  • At least one reflector member having two or more concentric reflection circles, wherein said reflector member is arranged adjacent said top plate, wherein an outer perimeter of the reflector member is smaller than an outer perimeter of said top mem ber, where the reflector member provides at least one first reflecting surface and at least one second reflecting surface, where in use the light source is capable of emitting light in a direction away from the bottom member towards the first reflecting surface, which reflects a first amount of light towards the transparent member, and towards the second reflecting surface re flects a second amount of light towards the illuminated member.
  • Lighting arrangements may be used to identify the functions of different roads and create an urban design effect. Adequate and glare-free lighting should be provided in all parts of the area/layout to enhance safety and security for drivers, cyclists and pe- destrians.
  • the lamp easily provides the amount of lighting necessary to illuminate road, sidewalks and enable users to see the potential obstacles and each other in the night to provide a safety environment.
  • the lighting arrangements comply with the aesthetic design and quality of the environmental surroundings using only one light source.
  • the glare problems may be substan tially reduced.
  • Benefits of high energy efficiency, high intensity, long lamp life and low maintenance may be retained through the use of an efficient light source which provides a high lumen per. watt.
  • an efficient light source which provides a high lumen per. watt.
  • the lamp may be provided with at decorative light effect.
  • the lamp housing may comprise a top member having a top plate and a retaining bracket, where the retaining bracket is arranged along an edge of the top plate. Be tween the top plate and the retaining bracket one or more decorative light effect may be introduced, using at least one illuminated member.
  • the illuminated member may be provided in a transparent material such as a glass or polymer material.
  • the illumi nated member is in one top side attached to the top plate and in a bottom side attached to the retaining bracket.
  • the bottom member houses a light source, for example a reflector light source.
  • the light source may be a substantially plane light source, such as a light emitting diode or any other solid state lighting.
  • at least one light emitting diode is ar- ranged in an array as the light source, where the light is reflected using a reflector ar ranged adjacent to or in the perimeter of the light source in relation to the bottom member.
  • the light source may be an integrated unit, attached to the bot tom member and using the bottom member as a heat sink. By removing the heat from a light source based on solid state lighting, the life span for the light source may be prolonged and the efficacy of the light source increased.
  • the outer perimeter of the reflector member is smaller than an outer perimeter of said top member, and the reflector may be releasa- bly fastened to the top member.
  • At least one transparent member extends from an out er perimeter of said retaining bracket to an outer perimeter of said bottom member.
  • the transparent member may be releasably fastened relative to the top member and to the bottom member using fastening means, such as bolts, screws and/or clips.
  • the top member, the bottom member and the transparent member or members shape the lamp, forming a cavity.
  • the light source and the reflector may be arranged inside the cavity.
  • the reflector member is not directly visible from a side view of the lamp housing.
  • the reflector member or reflector members are substantially hidden in the top part.
  • the lamp housing may be circular, oval or quadrangular shaped etc.
  • the reflector member comprising the concentric reflection surfaces, may be provided in a circle, oval or quadrangular shape etc.
  • the perimetric shape of the reflector member is substantially the same shape as the lamp housing or any other shape of reflector.
  • the reflector member may have two or more concentric reflection circles. Each of the concentric reflection circles may comprise at least a first reflecting surface. Each of the concentric reflection circles may comprise at least a first reflecting surface and at least a second reflecting surface.
  • the reflector member is arranged adjacent the top plate. The reflector member may be arranged in a parallel position adjacent the top plate. An outer perimeter of the reflector member is smaller than an outer perimeter of said top member. The outer perimeter of the reflector member may be arranged in a parallel position adjacent to the outer perimeter of the top plate.
  • the reflector member may have at least one first reflecting surface and at least one second reflecting surface, arranged parallel to each other. Alternatively, part of the at least one first reflecting surface and at least one second reflecting surface may be arranged parallel to each other. The at least one first reflecting surface and at least one second reflecting surface may be divided into sections.
  • the light emitted from the light source is directed away from the bottom member to wards the reflector member.
  • a reflecting surface is provided in a reflecting material.
  • the reflector may comprise a shape, which may reflect light in one or more different directions.
  • the reflector member may provide at least one first reflecting surface and at least one second reflecting surface.
  • the first reflecting surface or surfaces reflects a first amount of light towards the transparent member.
  • the transparent member allows the light almost unobstructed to pass through said transparent member.
  • the second reflecting surface reflects a second amount of light towards the illuminated member.
  • the illuminated member provides a decorative illumination of the lamp, by providing a lighting strip along the edge of said top member.
  • the light source may be directional light source arranged in the bottom, directing the light towards the reflector member.
  • the reflector member reflects the light towards the illuminated member, which may be a first illuminated member and the transparent member.
  • the reflector member may also reflect the light in a direction towards the light source and/or part of the light source, such as the edges of the light source.
  • the bottom member may also house a second illuminated member, which may be arranged such that the second illuminated member encircles the edges of the light source light.
  • the second illuminated member may comprise acryl.
  • the illuminated member may comprise glass.
  • the glass may be frosted glass.
  • the second illuminated member may have a shape of an upside down truncated cone.
  • the light distribution from a directional light source arranged in the bottom member of the lamp housing is different than the light distribution from a point light source arranged between the top member and the bottom member.
  • a point light source will not provide the same lighting effect distributed in and/or out of the lamp housing.
  • the light distributed from the lamp housing comprising a substantially flat light source which direct most of the light towards the reflector member and this creates a unique light distribution from the lamp house.
  • the lamp provides indirect illumination and an aesthetic design, using only one light source, which is easily maintained.
  • the lamp is a robust lamp which may be used in harsh environments.
  • the lamp is further more easy to scale into the application and specification needed. When applying this lamp into the predefined locations in the environment, the effect will be reducing risks of night time accidents, discouraging crime and vandalism; and making the environment a safe and comfortable place to travel through.
  • said illuminated member is provided in a translucent material.
  • Translucent material allows some light to travel through the material. The light does not pass directly through the materials, but changes direction many times as the light passes through.
  • materials like frosted glass and some plastics are translucent, and may be used in the lamp housing. The benefit of using translucent material is found in that the construction in the lamp housing, such as fas tening/attachment means will be hidden and can therefore not be seen from the outside of the lamp, since material will appear fuzzy and unclear.
  • the operation of driving the illuminated member is cost-effective and maintenance free.
  • the demand for aesthetic design and quality is desired, and must therefore be taken into consideration.
  • translucent material the lighting effect may be predefined for a given purpose according to the specification of the aesthetic design.
  • the material may be chosen among polymer and/or glass or similar material.
  • the illuminated member may be formed according to the aesthetic design, given the lamp a unique and individual appearance.
  • said illuminated member is an optical filter that reduces one or more wavelengths of the light.
  • the light source inside the lamp housing emits a broad range of wavelengths that cov- er the entire visible light spectrum according to a predefined application.
  • an optical filter may be used in relation to or in the il luminated member.
  • An optical filter selectively transmits light of different wave lengths. The light observed from the outside of the lamp may be passed through the optical filter, which only allows some wavelength through providing the predefined colour presented by the illuminated member.
  • the light may easily be directed through the material in order to provide an indirect correct il- lumination of the illuminated member.
  • the material may be chosen among polymer and/or glass or similar material. The operation of driving light through the illuminated member is cost-effective and maintenance free.
  • the lighting effect may be pre defined for a given purpose according to the specification of the aesthetic design.
  • the material may be chosen among polymer and/or glass or similar material providing a coloured expression.
  • the illuminated member may be formed according to the aes- thetic design, giving the lamp a unique and individual appearance, where the colour also may provide predefined information, such as direction and/or location.
  • said illuminated member is provided with a transparent or translucent laminates that reduce one or more wave lengths of the light.
  • the transparent or translucent laminates have a filtering effect.
  • the laminate may be provided as a laminate ring which is arranged adjacent to the illuminated member.
  • a filtering effect is provided by the laminate ring.
  • the illuminated member provided with the transparent or translucent laminate selectively transmits light of different wavelengths. The light observed from the outside of the lamp may be passed through the transparent or translucent laminate, which only allows some wave length through providing the predefined colour presented by the illuminated member.
  • the light may easily be directed through the material in order to provide an indirect correct illumination of the illuminated member.
  • the illuminated member may still be chosen among polymer and/or glass or similar material, where the laminate ring may be provided as a coloured film or formed plastic.
  • the operation of driving light through the illuminated member with transparent or translucent lami nate is cost-effective and maintenance free and still provides the aesthetic design, giv- en the lamp a unique and individual appearance.
  • said reflector member is con centric to said bottom member.
  • the light source may be arranged in the centre of the bottom member, where the light source is emitting the light toward the reflector member, and reflected downwards and out of the lamp. If the lamp is circular around a longitudinal axis of the lamp, the re flector member will reflect the light equally around the bottom part. If the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed symmetric or asymmetric in relation to the shape of the reflector member.
  • said reflector member is concentric to said top member.
  • the reflector may be arranged concentric to said top member.
  • the shape of the lamp may be arranged so that the reflector member is concentric to the top member and the bottom member, the reflector mem ber may distribute the light symmetrically around the lamp.
  • the shape of the lamp may be arranged so that the reflector member is concentric to the top member and the center line may differs from the bottom member. The reflector member may then distribute the light asym metrically around the lamp.
  • the reflector member is pro vided with at least one reflector edge along the perimeter of the reflector member, where the reflector edge extending away from said top plate having at least one sec ond reflecting surface facing towards said illuminated member in a predefined reflect ing angle.
  • the second reflecting surface on the reflector edge provides light to one side of the inner side of the illuminated member, with the purpose of illuminating the illuminated member, so a lighting strip is visible from the outside of the lamp.
  • the amount of light reflected towards the inner side of the illuminated member depends of the size of the second reflecting surface, and the reflection angle of second reflecting surface in rela tion to the reflector member. Furthermore, the amount of light may also depend on the luminous intensity directed toward the second reflecting surface.
  • the reflector member has a shape provided with at least one ridge, pointing towards the bottom member.
  • the reflector member may have one or more ridges facing the light source.
  • the sides of the ridges are surfaces reflecting the light from the light source in an angled direction, so that the incoming light is reflect ed in an outgoing reflected direction, preferable away from the center line of the lamp.
  • said ridge has a predefined ridge height relative to a height of the top member and a predefined ridge width rela tive to a reflecting angle.
  • the sides of the ridge/ridges may have a shape which may be linear, nonlinear, con cave or convex. Alternatively, the sides may be a mix of linear, nonlinear, concave or convex.
  • the reflection sides may have a function as reflection surface.
  • the shape of the reflector surface determines the direction of the outgoing reflected light. Part of the reflector surface may comprise diffused reflection surface.
  • the reflection member may control the reflection of the light by directing the light in a predefined direction.
  • the indirect lighting from the lamp may be aesthetic correct and rela tive glare-free. The light observed from the outside of the lamp will become a lighting design
  • the outer perimeter of said top member is larger than the outer perimeter of said bottom member.
  • the lamp housing may have a conically shape.
  • the top plate, the re flector member and the bottom member may all be concentric and have the common centre line.
  • the reflector member may be provided with concentric ridges. The reflec tor member will then be able to reflect the light equally around the bottom part.
  • the centre ridge may have a conical shaped top and concentric ridges arranged in different distances to the centre line.
  • the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed asymmetric in relation to the shape of the reflector member.
  • the reflector member may then be provided with symmetric and/or asymmetric ridges. The reflector member will then be able to reflect the light around the bottom part in a predetermined direction.
  • This present invention provides a solution which illuminates the sphere of the lamp as well as the surroundings to be illuminated provided by indirect lighting using only one light source.
  • Fig. 1 Illustrating a lamp for indirect illumination comprising an indirect illuminated lighting strip.
  • Fig. 2 Illustrating a cross section view of a lamp housing for indirect illumination comprising an indirect illuminated lighting strip.
  • Fig. 3 Illustrating a cross section view of a top member of a lamp housing for indirect illumination comprising a reflector member.
  • Fig. 4 Illustrating a cross section view of an alternative lamp housing for indirect il lumination.
  • Fig. 5 Illustrating a circular lamp for indirect illumination comprising a reflector member.
  • Fig. 1 illustrates a lamp 1 for indirect illumination comprising an indirect illuminated light strip 4.
  • the lamp housing 1 comprises a top plate 2 and a retaining bracket 3, where the retaining bracket 3 is arranged along an edge of the top plate.
  • a illuminated member 4 is arranged between said top plate 2 and said retaining bracket 3, which provides a lighting strip along the edge of said top member, visible from the outside of the lamp 1.
  • the lamp 1 has a longitudinal axis X.
  • the lamp housing 1 also comprises a bottom part 7, where the bottom member is ca pable of housing a light source 6.
  • the light source 6 emits light towards the top plate 8
  • a reflector member not shown in fig. 1, is provided inside the lamp housing adjacent to the top plate.
  • the light source 6 is then emitted towards the reflector member 8, and reflected through the illuminated member 4 and the transparent members 5.
  • the lamp 1 then provides indirect illumination to the ambient surroundings.
  • Fig. 2 illustrates a cross section view of a lamp housing 1 for indirect illumination comprising an indirect illuminated member 4.
  • the lamp housing 1 comprises a top plate 2 and a retaining bracket 3.
  • the retaining bracket 3 is arranged along an edge of the top plate 2.
  • the illuminated member 4 is arranged between the top plate 2 and the retaining bracket 3.
  • the transparent member extends from an outer perimeter of said retaining bracket 3 to the outer perimeter said bottom member 7, providing a cavity inside the lamp housing.
  • a light source 6 is arranged in relation to the bottom part 7, where the light is emitted towards the reflector member 8.
  • the reflector member 8 is arranged adjacent to the top plate 2.
  • the perimeter of the reflector member is concentric to the perimeter of the reflector member of the top plate 2, having a common center axis, which in this example is similar to the longitu dinal axis X.
  • the reflector member 8 has a ridge shape with an edge extending away from the top member 2 towards the bottom member 7.
  • the light source 6 emits light LI, L2 towards the reflector member 8, in a direction away from the bottom member 7.
  • a first reflecting surface 9 is provided on the side of a ridge, where the first reflecting surface 9 reflects a first amount of light LI towards the transparent member 5.
  • a second reflecting surface 10 is provided on the side of the edge of the reflector member 8, where the second reflecting surface 10 reflects a second amount of light L2 towards the illuminated member 4. The amount of light reflected from the second reflecting surface 10 towards the inner side of the illuminated member depends of the size and form of second reflecting sur face, and the reflection angle f of second reflecting surface in relation to the reflector member.
  • Fig. 3 illustrates a cross section view of a top member 20 of a lamp housing for indi rect illumination comprising a reflector member 8.
  • the reflector member 8 is concen tric to the top plate 20, where the reflector member 8 and the top plate have a common center line X.
  • the light from a light source is emitted toward the reflector member 8, and when reaching the reflector member 8 the reflected light is directed downwards away from the reflector member, and partially away from the top member.
  • Some of the light reflected by the second reflection surface 10 is directed toward the illuminat ed member.
  • a larger amount of the reflected light from the reflection member is re- fleeted by the first reflection surfaces 9', 9", and is directed out of the lamp as indirect illumination.
  • the illuminated member 4 is attached to an edge ring 2' of the top plate 2 on an upper edge of the illuminated member 4, using fastening means such as bolts and/or screws.
  • the lower edge of the illuminated member 4 is attached to the retaining bracket 3 us ing fastening means such as bolts and/or screws.
  • the illuminated member 4 is provid ed with a material, which reduces one or more wavelengths of the light. By reducing one or more wavelengths of the light a predefined colour is illuminating on the outer side of the illuminated member 4.
  • Fig. 4 illustrates a cross section view of an alternative lamp housing 1 for indirect il lumination.
  • the embodiment of the lamp housing 1 comprises a reflec tor member 8 which is arranged concentric to said top member 2 and the bottom member 7.
  • the light source 6 is arranged in the centre of the bottom member 7, where the light source 6 emits light toward the reflector member 8. The light will then be reflected downwards in a direction determined by the form of the reflecting surface.
  • the reflec- tor member 8 will for example distribute the light according to a predefined spatial distributing pattern.
  • the light source 6 may be a light emitting diode or a plurality of light emitting diodes arranged in an array, where the light is reflected using a reflector arranged adjacent to or in the perimeter of the light source 6 in relation to the bottom member 7.
  • the reflector mem ber 8 has one or more ridges 1 , 11", 12 directed more or less towards the light source 6.
  • the sides of the ridges 1 , 11", 12 are surfaces 9', 9", 11 reflecting the light from the light source 6 in an angled direction.
  • the incoming light is reflected in an outgoing reflected direction, preferably away from the centre line X of the lamp hous ing.
  • the ridges 1 , 11 ", 12 have different ridge height relative to the top plate 2 and each ridge 1 , 11 ", 12 has predefined ridge width relative to the ridge height provid- ing a predefined first reflecting angles f ⁇ ', f ⁇ ", and a second reflecting angle f2.
  • the reflection surfaces 9',9",11 are linear.
  • the sides of the ridge/ridges 1 , 11", 12 may have a shape which may be nonlinear, concave or con vex, or even a partial mix of linear, nonlinear, concave or convex. This will provide an alternatively spatial distribution of the light from the lamp housing, because the shape of the reflector surface determines the direction of the outgoing reflected light.
  • Part of the reflector surface may comprise diffused reflection surface.
  • Fig. 5 illustrates a lamp 1 for indirect illumination comprising a reflector member.
  • the lamp 1 has a longitudinal axis X, where the lamp has a conically shaped lamp.
  • the top plate 2 of the top member is larger than the bottom member 7.
  • the top plate 2, the reflector member 8 and the bottom member 7 are all concentric, and the common cen- tre line is identical to the longitudinal axis X.
  • the reflector member 8 is provided with three concentric ridges 1 G, 11", 12. The reflector member 8 will reflect the light equally around the bottom part. If the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed asymmetric in relation to the shape of the reflector member 8.
  • the centre ridge 1 is a conical shaped top with a first reflecting surface 9', where the other ridges 11", 12 are further away from the longitudinal axis X.
  • the reflector member 8 has reflecting surfaces on both sides of the ridges 11 ", 12. The incoming light is reflected similar in a circular spatial distribution of 360°, in relation to longitudinal axis X of the lamp housing.
  • the ridges 1 , 11", 12 have different ridge height relative to the top plate 2 and each ridge 1 , 11", 12 has a predefined ridge width relative to the ridge height.
  • the sides of the ridge/ridges 1 , 11", 12 may have a shape which may be nonlinear, concave or convex, or even a partial mix of linear, nonlinear, concave or convex. This will provide an alternatively circular spatial distribution of the light from the lamp housing, because the shape of the reflector surface 9', 9", 11 determines the direction of the outgoing reflected light for illumination of the surroundings.
  • the reflector member 8 has at least one reflector edge provided with a ridge 12 along the perimeter of the reflector member 8.
  • the ridge 12 extends away from said top plate 2 having two second reflecting surfaces 10', 10", one second reflecting surface 10' directing light towards the illuminated member 4, with the purpose of illuminating the illuminated member 4 so the lighting strip is visible from the outside of the lamp 1.
  • the amount of light reflected towards the inner side of the illuminated member de- pends on the size and form of the second reflecting surface 10'. Furthermore, the amount of light may also dependent from the luminous intensity directed toward the second reflecting surface 10'.

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

Abstract

It is an object of the invention to provide a lamp using one point of light source to illuminate the sphere of the lamp as well as the surroundings to be illuminated provided by indirect lighting. The present invention addresses this by providing lamp housing for indirect illumination, where the lamp housing comprises: - at least one top member having a top plate (2) and a retaining bracket (3), where the retaining bracket (3) is arranged along an edge of the top plate (2), - a bottom member (7), where the bottom member (7) is capable of housing a light source (6), - at least one transparent member (5), where at least one transparent member (5) extends from an outer perimeter of said retaining bracket (3) to an outer perimeter of said bottom member (7) - at least one illuminated member (4) is arranged between said top plate (2) and said retaining bracket (3), which provides a lighting strip along the edge of said top member, - at least one reflector member (8) arranged adjacent said top plate (2), where an outer perimeter of the reflector member (8) is smaller than an outer perimeter of said top member, where the reflector member (8) provides at least one first reflecting surface (9) and at least one second reflecting surface (10), where in use the light source (6) emits light in a direction away from the bottom member (7) towards the reflector member (8), where the first reflecting surface (9) reflects a first amount of light towards the transparent member (5), where the second reflecting surface (10) reflects a second amount of light towards the illuminated member (4).

Description

[LAMP REFLECTOR FOR INDIRECT ILLUMINATION]
Field of the Invention
The present invention relates to a lamp reflector for indirect lighting for streetlights. Background of the Invention
Street and/or park lighting poles, lamps and fittings make a major impact on the ap pearance of the road scheme/urban design, and should be planned as part of the over all design concept from the initial stage. The aesthetic design and quality of the street and/or park lighting installation is becoming a big issue when planning a city infra- structure. At the same time equal care should be taken to avoid light pollution and glare light.
Glare makes it difficult to see in the presence of bright light from lamps. Glare is caused by a significant ratio of luminance from a glare source. This is causing prob- lems at night for the drivers, cyclists and pedestrians. This might cause very danger ous situations in the traffic.
Lamp lighting design and public perception of both the lamp and the light, is often a big issue and a big challenge for designers and manufacturers, especially in street lamp design. The requirements to ensure public safety and energy efficiency are high and very complicated to achieve. If the lamp is not designed correctly, the risks of night time accidents, crime and vandalism will increase, and maintenance costs will be huge. The result of a lamp design makes a big impact on the night-time environment.
Object of the Invention Consequently it is an object of the invention to provide a lamp using one point of light source to illuminate the sphere of the lamp as well as the surroundings to be illuminat ed provided by indirect lighting.
Description of the Invention
The present invention addresses this by providing lamp housing for indirect illumina- tion, wherein the lamp housing comprises: - at least one top member having a top plate and a retaining bracket, where the retain ing bracket is arranged along an edge of the top plate,
- a bottom member, where the bottom member houses at least one light source, where in the at least one light source is capable of emitting light in a direction away from the bottom member towards the top member,
- at least one transparent member, where at least one transparent member extends from an outer perimeter of said retaining bracket to an outer perimeter of said bottom mem ber,
- at least one illuminated member is arranged between said top plate and said retaining bracket, which provides a lighting strip along the edge of said top member,
- at least one reflector member having two or more concentric reflection circles, wherein said reflector member is arranged adjacent said top plate, wherein an outer perimeter of the reflector member is smaller than an outer perimeter of said top mem ber, where the reflector member provides at least one first reflecting surface and at least one second reflecting surface, where in use the light source is capable of emitting light in a direction away from the bottom member towards the first reflecting surface, which reflects a first amount of light towards the transparent member, and towards the second reflecting surface re flects a second amount of light towards the illuminated member.
Lighting arrangements may be used to identify the functions of different roads and create an urban design effect. Adequate and glare-free lighting should be provided in all parts of the area/layout to enhance safety and security for drivers, cyclists and pe- destrians. The lamp easily provides the amount of lighting necessary to illuminate road, sidewalks and enable users to see the potential obstacles and each other in the night to provide a safety environment. At the same time the lighting arrangements comply with the aesthetic design and quality of the environmental surroundings using only one light source.
Using a lamp design with an indirect illumination the glare problems may be substan tially reduced. Benefits of high energy efficiency, high intensity, long lamp life and low maintenance may be retained through the use of an efficient light source which provides a high lumen per. watt. For example by using a light source based on solid state lighting. The lamp may be provided with at decorative light effect.
The lamp housing may comprise a top member having a top plate and a retaining bracket, where the retaining bracket is arranged along an edge of the top plate. Be tween the top plate and the retaining bracket one or more decorative light effect may be introduced, using at least one illuminated member. The illuminated member may be provided in a transparent material such as a glass or polymer material. The illumi nated member is in one top side attached to the top plate and in a bottom side attached to the retaining bracket.
The bottom member houses a light source, for example a reflector light source. The light source may be a substantially plane light source, such as a light emitting diode or any other solid state lighting. Alternatively, at least one light emitting diode is ar- ranged in an array as the light source, where the light is reflected using a reflector ar ranged adjacent to or in the perimeter of the light source in relation to the bottom member. Alternatively the light source may be an integrated unit, attached to the bot tom member and using the bottom member as a heat sink. By removing the heat from a light source based on solid state lighting, the life span for the light source may be prolonged and the efficacy of the light source increased.
A reflector member arranged adjacent said top plate away from the bottom member, provides a reflected light, which is distributed out of the lamp and providing the sur roundings with indirect illumination. The outer perimeter of the reflector member is smaller than an outer perimeter of said top member, and the reflector may be releasa- bly fastened to the top member. At least one transparent member extends from an out er perimeter of said retaining bracket to an outer perimeter of said bottom member. The transparent member may be releasably fastened relative to the top member and to the bottom member using fastening means, such as bolts, screws and/or clips. The top member, the bottom member and the transparent member or members shape the lamp, forming a cavity. The light source and the reflector may be arranged inside the cavity.
The reflector member is not directly visible from a side view of the lamp housing. The reflector member or reflector members are substantially hidden in the top part. The lamp housing may be circular, oval or quadrangular shaped etc. The reflector member comprising the concentric reflection surfaces, may be provided in a circle, oval or quadrangular shape etc. The perimetric shape of the reflector member is substantially the same shape as the lamp housing or any other shape of reflector.
The reflector member may have two or more concentric reflection circles. Each of the concentric reflection circles may comprise at least a first reflecting surface. Each of the concentric reflection circles may comprise at least a first reflecting surface and at least a second reflecting surface. The reflector member is arranged adjacent the top plate. The reflector member may be arranged in a parallel position adjacent the top plate. An outer perimeter of the reflector member is smaller than an outer perimeter of said top member. The outer perimeter of the reflector member may be arranged in a parallel position adjacent to the outer perimeter of the top plate. The reflector member may have at least one first reflecting surface and at least one second reflecting surface, arranged parallel to each other. Alternatively, part of the at least one first reflecting surface and at least one second reflecting surface may be arranged parallel to each other. The at least one first reflecting surface and at least one second reflecting surface may be divided into sections.
The light emitted from the light source is directed away from the bottom member to wards the reflector member. A reflecting surface is provided in a reflecting material. The reflector may comprise a shape, which may reflect light in one or more different directions. The reflector member may provide at least one first reflecting surface and at least one second reflecting surface. The first reflecting surface or surfaces reflects a first amount of light towards the transparent member. The transparent member allows the light almost unobstructed to pass through said transparent member. The second reflecting surface reflects a second amount of light towards the illuminated member. The illuminated member provides a decorative illumination of the lamp, by providing a lighting strip along the edge of said top member.
The light source may be directional light source arranged in the bottom, directing the light towards the reflector member. The reflector member reflects the light towards the illuminated member, which may be a first illuminated member and the transparent member. The reflector member may also reflect the light in a direction towards the light source and/or part of the light source, such as the edges of the light source. The bottom member may also house a second illuminated member, which may be arranged such that the second illuminated member encircles the edges of the light source light. The second illuminated member may comprise acryl. Alternatively, the illuminated member may comprise glass. The glass may be frosted glass. The second illuminated member may have a shape of an upside down truncated cone.
The light distribution from a directional light source arranged in the bottom member of the lamp housing, is different than the light distribution from a point light source arranged between the top member and the bottom member. A point light source will not provide the same lighting effect distributed in and/or out of the lamp housing. The light distributed from the lamp housing comprising a substantially flat light source which direct most of the light towards the reflector member and this creates a unique light distribution from the lamp house.
The lamp provides indirect illumination and an aesthetic design, using only one light source, which is easily maintained. The lamp is a robust lamp which may be used in harsh environments. The lamp is further more easy to scale into the application and specification needed. When applying this lamp into the predefined locations in the environment, the effect will be reducing risks of night time accidents, discouraging crime and vandalism; and making the environment a safe and comfortable place to travel through.
In an advantageous embodiment of the invention, said illuminated member is provided in a translucent material.
When light encounters a material, the light can interact with the material in several different ways. Translucent material allows some light to travel through the material. The light does not pass directly through the materials, but changes direction many times as the light passes through. For example materials like frosted glass and some plastics are translucent, and may be used in the lamp housing. The benefit of using translucent material is found in that the construction in the lamp housing, such as fas tening/attachment means will be hidden and can therefore not be seen from the outside of the lamp, since material will appear fuzzy and unclear. The operation of driving the illuminated member is cost-effective and maintenance free.
The demand for aesthetic design and quality is desired, and must therefore be taken into consideration. By using translucent material the lighting effect may be predefined for a given purpose according to the specification of the aesthetic design. The material may be chosen among polymer and/or glass or similar material. The illuminated member may be formed according to the aesthetic design, given the lamp a unique and individual appearance.
In a further advantageous embodiment of the invention, said illuminated member is an optical filter that reduces one or more wavelengths of the light.
The light source inside the lamp housing emits a broad range of wavelengths that cov- er the entire visible light spectrum according to a predefined application. To be able to use the light emitted from a main light source to illuminate the illuminated member in at least one predefined colour, an optical filter may be used in relation to or in the il luminated member. An optical filter selectively transmits light of different wave lengths. The light observed from the outside of the lamp may be passed through the optical filter, which only allows some wavelength through providing the predefined colour presented by the illuminated member.
When using material with optical filter features for the illuminated member, the light may easily be directed through the material in order to provide an indirect correct il- lumination of the illuminated member. The material may be chosen among polymer and/or glass or similar material. The operation of driving light through the illuminated member is cost-effective and maintenance free.
Again the demand for aesthetic design and quality is desired, and must therefore be taken into consideration. By using translucent material the lighting effect may be pre defined for a given purpose according to the specification of the aesthetic design. The material may be chosen among polymer and/or glass or similar material providing a coloured expression. The illuminated member may be formed according to the aes- thetic design, giving the lamp a unique and individual appearance, where the colour also may provide predefined information, such as direction and/or location.
In a still further advantageous embodiment of the invention, said illuminated member is provided with a transparent or translucent laminates that reduce one or more wave lengths of the light.
Also the transparent or translucent laminates have a filtering effect. The laminate may be provided as a laminate ring which is arranged adjacent to the illuminated member. To be able to use the light emitted from a main light source to illuminate the illumi nated member provided with the transparent or translucent laminate in at least one predefined colour, a filtering effect is provided by the laminate ring. The illuminated member provided with the transparent or translucent laminate selectively transmits light of different wavelengths. The light observed from the outside of the lamp may be passed through the transparent or translucent laminate, which only allows some wave length through providing the predefined colour presented by the illuminated member.
When using the transparent or translucent laminate with optical filter features for the illuminated member, the light may easily be directed through the material in order to provide an indirect correct illumination of the illuminated member. The illuminated member may still be chosen among polymer and/or glass or similar material, where the laminate ring may be provided as a coloured film or formed plastic. The operation of driving light through the illuminated member with transparent or translucent lami nate is cost-effective and maintenance free and still provides the aesthetic design, giv- en the lamp a unique and individual appearance.
In a further advantageous embodiment of the invention said reflector member is con centric to said bottom member. The light source may be arranged in the centre of the bottom member, where the light source is emitting the light toward the reflector member, and reflected downwards and out of the lamp. If the lamp is circular around a longitudinal axis of the lamp, the re flector member will reflect the light equally around the bottom part. If the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed symmetric or asymmetric in relation to the shape of the reflector member.
In a still further advantageous embodiment of the invention, said reflector member is concentric to said top member.
In an example of an embodiment of the lamp, the reflector may be arranged concentric to said top member. The shape of the lamp may be arranged so that the reflector member is concentric to the top member and the bottom member, the reflector mem ber may distribute the light symmetrically around the lamp. Alternatively, in another example of an embodiment of the lamp, the shape of the lamp may be arranged so that the reflector member is concentric to the top member and the center line may differs from the bottom member. The reflector member may then distribute the light asym metrically around the lamp.
In a further advantageous embodiment of the invention, the reflector member is pro vided with at least one reflector edge along the perimeter of the reflector member, where the reflector edge extending away from said top plate having at least one sec ond reflecting surface facing towards said illuminated member in a predefined reflect ing angle.
The second reflecting surface on the reflector edge provides light to one side of the inner side of the illuminated member, with the purpose of illuminating the illuminated member, so a lighting strip is visible from the outside of the lamp. The amount of light reflected towards the inner side of the illuminated member depends of the size of the second reflecting surface, and the reflection angle of second reflecting surface in rela tion to the reflector member. Furthermore, the amount of light may also depend on the luminous intensity directed toward the second reflecting surface.
In a still further advantageous embodiment of the invention, the reflector member has a shape provided with at least one ridge, pointing towards the bottom member.
To be able to control the reflection of light, the reflector member may have one or more ridges facing the light source. The sides of the ridges are surfaces reflecting the light from the light source in an angled direction, so that the incoming light is reflect ed in an outgoing reflected direction, preferable away from the center line of the lamp.
In a further advantageous embodiment of the invention, said ridge has a predefined ridge height relative to a height of the top member and a predefined ridge width rela tive to a reflecting angle.
The sides of the ridge/ridges may have a shape which may be linear, nonlinear, con cave or convex. Alternatively, the sides may be a mix of linear, nonlinear, concave or convex. The reflection sides may have a function as reflection surface. The shape of the reflector surface determines the direction of the outgoing reflected light. Part of the reflector surface may comprise diffused reflection surface.
When using indirect illumination in a lamp the reflection member may control the reflection of the light by directing the light in a predefined direction. By using a re flector member the indirect lighting from the lamp may be aesthetic correct and rela tive glare-free. The light observed from the outside of the lamp will become a lighting design
In a still further advantageous embodiment of the invention, the outer perimeter of said top member is larger than the outer perimeter of said bottom member.
If the outer perimeter of said top member is larger than the outer perimeter of said bottom member, the lamp housing may have a conically shape. The top plate, the re flector member and the bottom member may all be concentric and have the common centre line. The reflector member may be provided with concentric ridges. The reflec tor member will then be able to reflect the light equally around the bottom part. The centre ridge may have a conical shaped top and concentric ridges arranged in different distances to the centre line.
If the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed asymmetric in relation to the shape of the reflector member. The reflector member may then be provided with symmetric and/or asymmetric ridges. The reflector member will then be able to reflect the light around the bottom part in a predetermined direction. This present invention provides a solution which illuminates the sphere of the lamp as well as the surroundings to be illuminated provided by indirect lighting using only one light source.
The invention has now been explained with reference to a few embodiments which have only been discussed in order to illustrate the many possibilities and varying de sign possibilities achievable with the construction of a lamp housing according to the present invention.
Description of the Drawing
The embodiments of the invention are described in the following with reference to: Fig. 1: Illustrating a lamp for indirect illumination comprising an indirect illuminated lighting strip.
Fig. 2: Illustrating a cross section view of a lamp housing for indirect illumination comprising an indirect illuminated lighting strip.
Fig. 3: Illustrating a cross section view of a top member of a lamp housing for indirect illumination comprising a reflector member.
Fig. 4: Illustrating a cross section view of an alternative lamp housing for indirect il lumination.
Fig. 5: Illustrating a circular lamp for indirect illumination comprising a reflector member.
Detailed Description of the Invention
An embodiment of the invention is explained in the following detailed description. It is to be understood that the invention is not limited in its scope to the following de scription or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways.
Fig. 1 illustrates a lamp 1 for indirect illumination comprising an indirect illuminated light strip 4. The lamp housing 1 comprises a top plate 2 and a retaining bracket 3, where the retaining bracket 3 is arranged along an edge of the top plate. A illuminated member 4 is arranged between said top plate 2 and said retaining bracket 3, which provides a lighting strip along the edge of said top member, visible from the outside of the lamp 1. The lamp 1 has a longitudinal axis X.
The lamp housing 1 also comprises a bottom part 7, where the bottom member is ca pable of housing a light source 6. The light source 6 emits light towards the top plate 8
A reflector member, not shown in fig. 1, is provided inside the lamp housing adjacent to the top plate. The light source 6 is then emitted towards the reflector member 8, and reflected through the illuminated member 4 and the transparent members 5. The lamp 1 then provides indirect illumination to the ambient surroundings.
Fig. 2 illustrates a cross section view of a lamp housing 1 for indirect illumination comprising an indirect illuminated member 4. The lamp housing 1 comprises a top plate 2 and a retaining bracket 3. The retaining bracket 3 is arranged along an edge of the top plate 2. The illuminated member 4 is arranged between the top plate 2 and the retaining bracket 3. The transparent member extends from an outer perimeter of said retaining bracket 3 to the outer perimeter said bottom member 7, providing a cavity inside the lamp housing. A light source 6 is arranged in relation to the bottom part 7, where the light is emitted towards the reflector member 8.
The reflector member 8 is arranged adjacent to the top plate 2. The perimeter of the reflector member is concentric to the perimeter of the reflector member of the top plate 2, having a common center axis, which in this example is similar to the longitu dinal axis X. The reflector member 8 has a ridge shape with an edge extending away from the top member 2 towards the bottom member 7.
The light source 6 emits light LI, L2 towards the reflector member 8, in a direction away from the bottom member 7. A first reflecting surface 9 is provided on the side of a ridge, where the first reflecting surface 9 reflects a first amount of light LI towards the transparent member 5. A second reflecting surface 10 is provided on the side of the edge of the reflector member 8, where the second reflecting surface 10 reflects a second amount of light L2 towards the illuminated member 4. The amount of light reflected from the second reflecting surface 10 towards the inner side of the illuminated member depends of the size and form of second reflecting sur face, and the reflection angle f of second reflecting surface in relation to the reflector member.
Fig. 3 illustrates a cross section view of a top member 20 of a lamp housing for indi rect illumination comprising a reflector member 8. The reflector member 8 is concen tric to the top plate 20, where the reflector member 8 and the top plate have a common center line X. The light from a light source is emitted toward the reflector member 8, and when reaching the reflector member 8 the reflected light is directed downwards away from the reflector member, and partially away from the top member. Some of the light reflected by the second reflection surface 10 is directed toward the illuminat ed member. A larger amount of the reflected light from the reflection member is re- fleeted by the first reflection surfaces 9', 9", and is directed out of the lamp as indirect illumination.
The illuminated member 4 is attached to an edge ring 2' of the top plate 2 on an upper edge of the illuminated member 4, using fastening means such as bolts and/or screws. The lower edge of the illuminated member 4 is attached to the retaining bracket 3 us ing fastening means such as bolts and/or screws. The illuminated member 4 is provid ed with a material, which reduces one or more wavelengths of the light. By reducing one or more wavelengths of the light a predefined colour is illuminating on the outer side of the illuminated member 4.
Fig. 4 illustrates a cross section view of an alternative lamp housing 1 for indirect il lumination. In this example the embodiment of the lamp housing 1 comprises a reflec tor member 8 which is arranged concentric to said top member 2 and the bottom member 7.
The light source 6 is arranged in the centre of the bottom member 7, where the light source 6 emits light toward the reflector member 8. The light will then be reflected downwards in a direction determined by the form of the reflecting surface. The reflec- tor member 8 will for example distribute the light according to a predefined spatial distributing pattern.
The light source 6 may be a light emitting diode or a plurality of light emitting diodes arranged in an array, where the light is reflected using a reflector arranged adjacent to or in the perimeter of the light source 6 in relation to the bottom member 7.
To be able to control the reflection of light from the light source 6, the reflector mem ber 8 has one or more ridges 1 , 11", 12 directed more or less towards the light source 6. The sides of the ridges 1 , 11", 12 are surfaces 9', 9", 11 reflecting the light from the light source 6 in an angled direction. The incoming light is reflected in an outgoing reflected direction, preferably away from the centre line X of the lamp hous ing. The ridges 1 , 11 ", 12 have different ridge height relative to the top plate 2 and each ridge 1 , 11 ", 12 has predefined ridge width relative to the ridge height provid- ing a predefined first reflecting angles fΐ', fΐ", and a second reflecting angle f2. In this example the reflection surfaces 9',9",11 are linear. Alternatively, the sides of the ridge/ridges 1 , 11", 12 may have a shape which may be nonlinear, concave or con vex, or even a partial mix of linear, nonlinear, concave or convex. This will provide an alternatively spatial distribution of the light from the lamp housing, because the shape of the reflector surface determines the direction of the outgoing reflected light. Part of the reflector surface may comprise diffused reflection surface.
An amount of light is reflected from the second reflecting surface 10 towards the inner side of the illuminated member 4. The amount of light reflected depends of the size and form of the second reflecting surface 10 and the reflection angle f2. Another and larger amount of light is reflected from the first reflecting surface 10 towards the inner side of the illuminated member 4. The amount of light reflected depends of the size and form of the second reflecting surface 10 and the reflection angle f2. The lamp housing 1 is constructed so that the lamp is only using one luminous point, the light source 6. The power supply only needs to be connected to the light source 6 arranged in relation to the bottom member 7. No wires are needed to supply any light source in the top member. Fig. 5 illustrates a lamp 1 for indirect illumination comprising a reflector member. The lamp 1 has a longitudinal axis X, where the lamp has a conically shaped lamp. The top plate 2 of the top member is larger than the bottom member 7. The top plate 2, the reflector member 8 and the bottom member 7 are all concentric, and the common cen- tre line is identical to the longitudinal axis X. The reflector member 8 is provided with three concentric ridges 1 G, 11", 12. The reflector member 8 will reflect the light equally around the bottom part. If the lamp is in a quadrangular shape or in an oval shape the light emitted from the light source will be distributed asymmetric in relation to the shape of the reflector member 8.
The centre ridge 1 is a conical shaped top with a first reflecting surface 9', where the other ridges 11", 12 are further away from the longitudinal axis X. To be able to control the reflection of light out of the lamp, the reflector member 8 has reflecting surfaces on both sides of the ridges 11 ", 12. The incoming light is reflected similar in a circular spatial distribution of 360°, in relation to longitudinal axis X of the lamp housing. The ridges 1 , 11", 12 have different ridge height relative to the top plate 2 and each ridge 1 , 11", 12 has a predefined ridge width relative to the ridge height. Alternatively, the sides of the ridge/ridges 1 , 11", 12 may have a shape which may be nonlinear, concave or convex, or even a partial mix of linear, nonlinear, concave or convex. This will provide an alternatively circular spatial distribution of the light from the lamp housing, because the shape of the reflector surface 9', 9", 11 determines the direction of the outgoing reflected light for illumination of the surroundings.
The reflector member 8 has at least one reflector edge provided with a ridge 12 along the perimeter of the reflector member 8. The ridge 12 extends away from said top plate 2 having two second reflecting surfaces 10', 10", one second reflecting surface 10' directing light towards the illuminated member 4, with the purpose of illuminating the illuminated member 4 so the lighting strip is visible from the outside of the lamp 1. The amount of light reflected towards the inner side of the illuminated member de- pends on the size and form of the second reflecting surface 10'. Furthermore, the amount of light may also dependent from the luminous intensity directed toward the second reflecting surface 10'.

Claims

1. Lamp housing for indirect illumination, where the lamp housing comprises:
- at least one top member having a top plate and a retaining bracket, where the retain- ing bracket is arranged along an edge of the top plate,
- a bottom part, where the bottom member houses at least one light source, wherein the at least one light source is capable of emitting light in a direction away from the bottom member towards the top member,
- at least one transparent member, where at least one transparent member extends from an outer perimeter of said retaining bracket to an outer perimeter of said bottom mem ber,
- at least one illuminated member is arranged between said top plate and said retaining bracket, which provides a lighting strip along the edge of said top member,
- at least one reflector member having two or more concentric reflection circles, wherein said reflector member is arranged adjacent said top plate, wherein an outer perimeter of the reflector member is smaller than an outer perimeter of said top mem ber, where the reflector member provides at least one first reflecting surface and at least one second reflecting surface, where in use the light source is capable of emitting light in a direction away from the bottom member towards the first reflecting surface, which reflects a first amount of light towards the transparent member, and towards the second reflecting surface re flects a second amount of light towards the illuminated member.
2. Lamp housing according to claim 1, where said illuminated member is provided in a translucent material.
3. Lamp housing according to claim 1 or 2, where said illuminated member is an opti cal filter that reduces one or more wavelengths of the light.
4. Lamp housing according to claim 1 or 2, where said illuminated member is provid ed with at least one transparent or translucent laminates, that reduces one or more wavelengths of the light.
5. Lamp housing according to any one of the preceding claims, where said reflector member is concentric to said bottom member.
6. Lamp housing according to any one of the preceding claims, where said reflector member is concentric to said top member.
7. Lamp housing according to any one of the preceding claims, where the reflector member is provided with at least one reflector edge along the perimeter of the reflec tor member, where the reflector edge extending away from said top plate having at least one second reflecting surface facing towards said illuminated member in a prede fined reflecting angle.
8. Lamp housing according to any one of the preceding claims, where the reflector member has a shape provided with at least one ridge, pointing towards the bottom member.
9. Lamp housing according to claim 8, where said ridge has a predefined ridge height relative to a height of the top member and a predefined ridge width relative to a re flecting angle.
10. Lamp housing according to any one of the preceding claims, where the outer pe rimeter of said top member is larger than the outer perimeter of said bottom member.
PCT/DK2020/050313 2019-11-18 2020-11-18 Lamp reflector for indirect illumination WO2021098924A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201970700 2019-11-18
DKPA201970700 2019-11-18

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Citations (6)

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Publication number Priority date Publication date Assignee Title
FR2534290A1 (en) * 1982-10-08 1984-04-13 Luminter Sa Illuminated bollard with modular structure
US5081569A (en) * 1989-09-05 1992-01-14 Spaulding Lighting, Inc. Luminaire with changeable accent lighting
EP0513907A2 (en) * 1991-05-16 1992-11-19 Koninklijke Philips Electronics N.V. Luminaire for creating a primary beam and a secondary beam
US20100020545A1 (en) * 2008-07-24 2010-01-28 General Electric Company High efficiency beam forming louver system for traditional post-top globes
US20110255280A1 (en) * 2010-04-20 2011-10-20 Chi Gon Chen Multiple LED Bulb With Thermal Management Features
EP2557360A1 (en) * 2010-04-09 2013-02-13 Amoluxe Co., Ltd Led street light

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534290A1 (en) * 1982-10-08 1984-04-13 Luminter Sa Illuminated bollard with modular structure
US5081569A (en) * 1989-09-05 1992-01-14 Spaulding Lighting, Inc. Luminaire with changeable accent lighting
EP0513907A2 (en) * 1991-05-16 1992-11-19 Koninklijke Philips Electronics N.V. Luminaire for creating a primary beam and a secondary beam
US20100020545A1 (en) * 2008-07-24 2010-01-28 General Electric Company High efficiency beam forming louver system for traditional post-top globes
EP2557360A1 (en) * 2010-04-09 2013-02-13 Amoluxe Co., Ltd Led street light
US20110255280A1 (en) * 2010-04-20 2011-10-20 Chi Gon Chen Multiple LED Bulb With Thermal Management Features

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