GB2438867A - Daylight and nightlight luminaire - Google Patents

Daylight and nightlight luminaire Download PDF

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Publication number
GB2438867A
GB2438867A GB0625282A GB0625282A GB2438867A GB 2438867 A GB2438867 A GB 2438867A GB 0625282 A GB0625282 A GB 0625282A GB 0625282 A GB0625282 A GB 0625282A GB 2438867 A GB2438867 A GB 2438867A
Authority
GB
United Kingdom
Prior art keywords
reflector
luminaire
lamps
rod
sockets
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0625282A
Other versions
GB2438867B (en
GB0625282D0 (en
Inventor
Manfred Bock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILA GROUP Ltd
Original Assignee
WILA GROUP Ltd
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 WILA GROUP Ltd filed Critical WILA GROUP Ltd
Publication of GB0625282D0 publication Critical patent/GB0625282D0/en
Publication of GB2438867A publication Critical patent/GB2438867A/en
Application granted granted Critical
Publication of GB2438867B publication Critical patent/GB2438867B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • 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
    • 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
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • 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
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped
    • 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
    • F21Y2113/00—Combination of 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form

Landscapes

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

Abstract

The present invention relates to a luminaire comprising a reflector and at least two sockets arranged adjacent said reflector and used for receiving therein rod-shaped lamps provided with a base on one side thereof and having different illuminances and/or different light colours. The present invention aims at realizing a luminaire used for daylight illumination and nightlight illumination and having, in addition to good anti-dazzle properties, also a symmetrical light distribution and a reasonable light output ratio. In order to achieve this, the sockets are arranged on opposite sides of the reflector axis such that they are laterally displaced relative to one another, in such a way that the lamp axes are arranged on both sides of and inclined relative to the reflector axis and that the respective illuminants of the rod-shaped lamps are located adjacent the reflector axis. Used for luminaires having lamps with more than one light colour temperature.

Description

<p>Luminal re The present invention relates to a luminaire comprising a
reflector and at least two sockets arranged adjacent said reflector and used for receiving therein rod-shaped lamps provided with a base on one side thereof and having different illuminances and/or different light colours.</p>
<p>Such luminaires are used e.g. in cases where, in an illumination concept, daylight and nightlight are to be realized by one luminaire. From the point of view of lighting technology, day and night are realized by different illuminances and different light colours. The light colour is defined through the term colour temperature. A colour temperature of approx. 4,200 Kelvin corresponds to daylight; nightlight can be realized by a colour temperature of approx. 3,000 Kelvin.</p>
<p>Various possibilities of realizing day and night switching modes in illumination systems are already known on the market. A simple possibility is e.g. a provision of individual luminaires having different light colours and illumination intensities in the room to be illuminated. A changeover between daylight luminaires and nightlight luminaires can be effected manually or through daylight sensors.</p>
<p>If daylight illumination and nightlight illumination are to be realized by one luminaire, this can be accomplished by providing a daylight luminaire with a warm white filter disk.</p>
<p>When changing over to the nightlight mode, this warm white filter disk is placed below the lamp, whereby the colour spectrum will change and the luminance will be reduced.</p>
<p>This solution is, however, comparatively complicated, since the warm white filter disk has to be moved through a motor.</p>
<p>In addition, it is also known to provide a luminaire with two perpendicularly arranged lamps that are disposed side by side. The lamps have the desired different light colour characteristics and the desired different illumination intensities. Due to the space required for the sockets of the lamps, the lamps are, however, arranged side by side at a certain distance from one another, which is necessary for structural reasons. This leads to a strongly asymmetric light distribution on the illuminated surface so that, when a changeover from daylight to nightlight has been carried out, a completely different appearance may possibly prevail.</p>
<p>In order to eliminate this drawback, a different solution has been developed, in the case of which the lamps are arranged in the luminaire horizontally one on top of the other.</p>
<p>This allows to accomplish an almost symmetric light distribution for the daylight mode and for the nightlight mode. However, also this solution entails a substantial drawback, since the light output ratio of the luminaire is less than 30 %. This is due to fact that the reflector reflection of the lower lamp is essentially disturbed by the upper lamp and that the light beams of the upper lamp are obstructed by the lower lamp.</p>
<p>The hitherto known possibilities of realizing daylight and nightlight by one luminaire entail a plurality of drawbacks. These possibilities are often very complicated, they may lead to an asymmetric light distribution and thus to different daylight and nightlight appearances of the room to be illuminated, or they entail a high reduction of the light output ratio.</p>
<p>It is therefore the object of the present invention to realize a luminaire for daylight illumination and nightlight illumination, which has, in addition to good anti-dazzle properties, also a symmetrical light distribution and a reasonable light output ratio.</p>
<p>In order to achieve this, the present invention is so conceived that the sockets are arranged on opposite sides of the reflector axis such that they are laterally displaced relative to one another, in such a way that the lamp axes are arranged on both sides of and inclined relative to the reflector axis and that the respective ilium inants of the rod-shaped lamps are located adjacent the reflector axis. By means of this arrangement, the necessity of arranging the lamp sockets in the reflector at a large lateral distance from one another can be avoided. Hence, there is almost no lateral displacement between the focal points of two corresponding daylight and nightlight lamps. By means of the inclined mode of arrangement of the lamps, the lamps are prevented from exerting a strong mutual influence on one another, whereby an acceptable light output ratio will be achieved.</p>
<p>According to a preferred embodiment, the illuminants of the rod-shaped lamps are arranged on the same level adjacent the reflector axis. It follows that these two lamps will mutually influence one another only to an extremely low extent.</p>
<p>It is also possible that the illuminants of the rod-shaped lamps are arranged directly adjacent the reflector axis. It follows that the lamps are arranged in the reflector at almost identical locations, i.e. the two lamps will cover almost identical illumination areas.</p>
<p>A further variant is so conceived that a respective 450 angle is defined between the lamp axes and the reflector axis, It follows that that two lamp axes extend perpendicular to one another. On the basis of this arrangement, the structurally necessary distance between the socket positions is avoided, and an almost identical focussing of the two focal points of the lamps is achieved.</p>
<p>Another advantageous embodiment is so conceived that the reflector is parabolic. This allows a correction of the lighting effect of the slightly displaced lamps, and a homogeneous symmetrical luminous distribution curve is achieved.</p>
<p>Another possibility is that a scatter sheet is arranged within the reflector adjacent to the at least two lamps. Also by means of this scatter sheet a correction of the lighting effect of the slightly displaced lamps as well as a homogeneous symmetrical luminous distribution curve can be achieved.</p>
<p>The scatter sheet can consist of a patterned and frosted safety glass. This allows a robust embodiment of the luminaire.</p>
<p>In the following, embodiments of the present invention will be explained in detail on the basis of a drawing. The only figure shows a section through the luminaire.</p>
<p>Fig. 1 shows a section through the luminaire 1. The luminaire 1 shown comprises a two-part reflector 2 with a parabolic reflector 3 and a reflector cone 4. Adjacent to the parabolic reflector 3, the sockets 5, 6 are arranged. The sockets 5, 6 serve to receive therein the lamps 7, 8. In order to realize daylight and nightlight, the lamps 7, 8 have different illuminances and different light colours. Daylight can be realized e.g. by the light colour neutral white with a light temperature of approx. 4,200 Kelvin, nightlight is represented by the light colour warm white with a light temperature of approx. 3,000 Kelvin.</p>
<p>On the lamp side facing away from the sockets 5, 6, a scatter sheet 9 is arranged in the reflector 2. The scatter sheet 9 consists of patterned and frosted safety glass, whereby a robust embodiment of the luminaire is obtained.</p>
<p>The sockets 5, 6 are arranged, with slight lateral displacement, on opposite sides of the reflector axis 10. The sockets 5, 6 are mounted such that the reception openings 11, 12 for the lamps 7, 8 are directed towards the reflector axis 10. The lamps 7, 8 are preferably rod-shaped. Due to the minor degree of lateral displacement of the sockets 5, 6, it is achieved that the lamp axes 13 and 14 are arranged very close to the reflector axis lOon both sides. The illuminants 15, 16 of the rod-shaped lamps 7, 8 extend from the sockets 5, 6 towards the reflector axis 10. The illuminants 15, 16 of the rod-shaped lamps 7, 8 are preferably arranged adjacent to the reflector axis 10 or project beyond the latter, the reflector axis 10 being positioned between the lamps 7, 8 and the illuminants 15, 16 of the lamps 7, 8 being almost in contact with the reflector axis 10. It follows that also the illuminants 15, 16 of the lamps 7, 8 are located so close to one another that are they almost in contact with one another.</p>
<p>Due to the reflector 2 and the patterned and frosted scatter sheet 9 arranged below said reflector 2, the lighting effect of the slightly displaced lamps 7, 8 can be corrected. A reasonable light output ratio as well as a homogeneous symmetrical luminous distribution curve will be achieved in this way. In addition, this will also allow a reduction of glare.</p>
<p>The sockets 5, 6 are preferably arranged such that a respective 450 angle is defined between the lamp axes 13, 14 and the reflector axis 10. It follows that, by means of the structurally necessary distance between the sockets 5, 6, the two lamps 7, 8 will be prevented from obstructing one another. Both lamps 7, 8 are arranged almost at the focal point of the reflector 2 so that an almost identical focussing of the light cones of the lamps 7, 8 is achieved.</p>

Claims (1)

  1. <p>Claims 1. A turn inaire (1) comprising a reflector (2) and at least two
    sockets (5, 6) arranged adjacent said reflector (2) and used for receiving therein rod-shaped lamps (7, 8) provided with a base on one side thereof and having different itluminances and/or different light colours, characterized in that the sockets (5, 6) are arranged on opposite sides of the reflector axis (10) such that they are laterally displaced relative to one another, in such a way that the lamp axes (13, 14) are arranged on both sides of and inclined relative to the reflector axis (10) and that the respective illuminants (15, 16) of the rod-shaped lamps (7, 8) are located adjacent the reflector axis (10).</p>
    <p>2. A luminaire (1) according to claim 1, characterized in that the illuminants (15, 16) of the rod-shaped lamps (7, 8) are arranged on the same level adjacent the reflector axis (10).</p>
    <p>3. A luminaire (1) according to claim 1 or 2, characterized in that the illuminants (15, 16) of the rod-shaped lamps (7, 8) are arranged directly adjacent the reflector axis (10).</p>
    <p>4. A luminaire (1) according to one of the claims ito 3, characterized in that a respective 45 angle is defined between the lamp axes (13, 14) and the reflector axis (10).</p>
    <p>5. A luminaire (1) according to one of the claims 1 to 4, characterized in that at least a part of the reflector (2) is parabolic.</p>
    <p>6. A luminaire (1) according to one of the claims 1 to 5, characterized in that a scatter sheet (9) is arranged within the reflector (2) adjacent to the at least two lamps (7, 8).</p>
    <p>7. A luminaire (1) according to claim 6, characterized in that the scatter sheet (9) consists of a patterned and frosted safety glass.</p>
GB0625282A 2005-12-21 2006-12-19 Luminaire Expired - Fee Related GB2438867B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005019965U DE202005019965U1 (en) 2005-12-21 2005-12-21 Lamp, has frames arranged on opposite sides of reflector axis, so that light axes are arranged on both sides of reflector axle and inclined in reflector axis, and illuminants of lights lie adjacent to reflector axis

Publications (3)

Publication Number Publication Date
GB0625282D0 GB0625282D0 (en) 2007-01-24
GB2438867A true GB2438867A (en) 2007-12-12
GB2438867B GB2438867B (en) 2010-05-12

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Family Applications (1)

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GB0625282A Expired - Fee Related GB2438867B (en) 2005-12-21 2006-12-19 Luminaire

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DE (1) DE202005019965U1 (en)
GB (1) GB2438867B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017205449A1 (en) * 2017-03-30 2018-10-04 Zumtobel Lighting Gmbh lamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999026268A1 (en) * 1997-10-28 1999-05-27 Advanced Lighting Technologies, Inc. Unitary socket/electronics assembly module for a metal halide lamp
DE20002060U1 (en) * 2000-02-05 2000-06-08 Wila Leuchten Ag Sevelen lamp
WO2002016827A1 (en) * 2000-08-24 2002-02-28 Koninklijke Philips Electronics N.V. Luminaire
WO2003087662A1 (en) * 2002-04-12 2003-10-23 Koninklijke Philips Electronics N.V. Luminaire
DE202005010464U1 (en) * 2005-07-04 2005-09-08 Ansorg Gmbh Device to illuminate objects such as clothing has separated lights in a housing with separate reflectors and a control of color temperature for day and night illumination
EP1586811A1 (en) * 2004-04-16 2005-10-19 Koninklijke Philips Electronics N.V. Lamps and reflector arrangement for color mixing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125440A (en) * 1936-01-27 1938-08-02 Edwin F Guth Illuminating fixture
US4922393A (en) * 1983-03-25 1990-05-01 Scientific Component Systems, Inc. Lamp apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999026268A1 (en) * 1997-10-28 1999-05-27 Advanced Lighting Technologies, Inc. Unitary socket/electronics assembly module for a metal halide lamp
DE20002060U1 (en) * 2000-02-05 2000-06-08 Wila Leuchten Ag Sevelen lamp
WO2002016827A1 (en) * 2000-08-24 2002-02-28 Koninklijke Philips Electronics N.V. Luminaire
WO2003087662A1 (en) * 2002-04-12 2003-10-23 Koninklijke Philips Electronics N.V. Luminaire
EP1586811A1 (en) * 2004-04-16 2005-10-19 Koninklijke Philips Electronics N.V. Lamps and reflector arrangement for color mixing
DE202005010464U1 (en) * 2005-07-04 2005-09-08 Ansorg Gmbh Device to illuminate objects such as clothing has separated lights in a housing with separate reflectors and a control of color temperature for day and night illumination

Also Published As

Publication number Publication date
GB2438867B (en) 2010-05-12
GB0625282D0 (en) 2007-01-24
DE202005019965U1 (en) 2006-03-09

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20181219