EP2147247A1 - Luminaire avec réflecteur parabolique composite - Google Patents

Luminaire avec réflecteur parabolique composite

Info

Publication number
EP2147247A1
EP2147247A1 EP07795212A EP07795212A EP2147247A1 EP 2147247 A1 EP2147247 A1 EP 2147247A1 EP 07795212 A EP07795212 A EP 07795212A EP 07795212 A EP07795212 A EP 07795212A EP 2147247 A1 EP2147247 A1 EP 2147247A1
Authority
EP
European Patent Office
Prior art keywords
luminaire
segment
light
parabolic
major axis
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
EP07795212A
Other languages
German (de)
English (en)
Other versions
EP2147247A4 (fr
EP2147247B1 (fr
Inventor
Kurt S. Wilcox
Eric J. Haugaard
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.)
Wolfspeed Inc
Original Assignee
Ruud Lighting Inc
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 Ruud Lighting Inc filed Critical Ruud Lighting Inc
Publication of EP2147247A1 publication Critical patent/EP2147247A1/fr
Publication of EP2147247A4 publication Critical patent/EP2147247A4/fr
Application granted granted Critical
Publication of EP2147247B1 publication Critical patent/EP2147247B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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
    • F21W2131/105—Outdoor lighting of arenas or the like

Definitions

  • governmental entities are enacting rules and regulations requiring use of more energy efficient luminaires. For example, some governmental entities have enacted rules limiting or banning the use of the relatively less efficient luminaires with horizontally oriented lamps. And, governmental entities are adopting building codes and other rules imposing limits on the amount of electrical energy that can be consumed by a commercial business which utilizes exterior area illumination. Use of more efficient luminaires, therefore, is being driven by a growing body of governmental regulations.
  • Light trespass refers to spillage of light from one exterior location to an adjacent exterior location. In effect, light trespass represents wasted light. Not only is this inefficient, but such light trespass can be a violation of governmental regulations.
  • FIGURE 21 is a cross-sectional view of a second side segment reflector section taken along section 21-21 of Figure 19 including parabola major axes and foci in a vertical plane
  • FIGURE 22 is a cross-sectional view of a third segmented side reflector section taken along section 22-22 of Figure 19 including parabola major axes and foci in a vertical plane;
  • Housing portion 21 may include center 25, and side wall 27, 29 portions which enclose reflector 11 and a lamp holder 31 in which lamp 19 is mounted.
  • Housing portion 21 includes front 30 and rear 32 sides. While three wall portions 25-29 are shown, any number of walls may be selected in the design of housing 17. Housing walls 25-29 define a generally horizontal bottom opening 33 which lies in a generally horizontal plane 34.
  • side portion 63 is preferably a mirror image of side portion 61
  • side portion 63 also includes sections 93-99, each of which is comprised of two segments 117, 119, 121, 123, 125, 127, 131, 133.
  • Segments 117- 133 also represent a second plurality of two-dimensional parabolic segments.
  • Each of such segments 101-133 is a part of its own two-dimensional parabola, and each segment 101-133 is shaped and oriented such that it forms part of its two-dimensional parabola in a generally vertical plane and another two-dimensional parabola in a generally horizontal plane, thereby enabling these portions of reflector 11 to direct light both downward and to the side to target area subregions 139-169.
  • major axes 73a, 75a, and 77a are oriented at angles of 10°, 12°, and 34°, respectively, forward of nadir 70.
  • Nadir 70 is a vertical axis which passes through the center of light-emitting segment 47.
  • Axis 48 of light- emitting segment 47 is oriented at an angle of about -15° from nadir 70 as can be seen in Figures 16 and 17.
  • Each axis 73a, 75a, 77a is forward of nadir 70 in that the direction of each axis 73a, 75a, 77a is toward the housing front side 30 and away from the housing rear side 32.
  • Each major axis 75a, 77a is in front of another major axis to the extent that it is directed more toward the housing front side 30 than the other major axis.
  • middle parabolic segment 75 major axis 75a is oriented forward of the front parabolic segment 73 major axis 73a and the rear parabolic segment 77 major axis 77a is oriented forward of the middle parabolic segment 75 major axis 75 a.
  • Figures 18 and 24 illustrate one approach to the fabrication of reflector 11.
  • the center 59 and side portions 61, 63 of reflector 11 are fabricated from pieces of sheet metal, it is convenient and cost-effective to approximate the partial parabolas as circular sections having radii of curvature.
  • Figure 18 shows one such embodiment for fabrication of reflector center portion 59.
  • rear segment 77 partial parabola is approximated by a circular section having a radius of curvature of about 13 inches
  • center segment 75 partial parabola is approximated by a circular section having a radius of curvature of about 7 inches
  • front segment 77 partial parabola is approximated by two circular sections respectively having radii of curvature of about 13.5 inches and about 43 inches.
  • each side section 85-99 may be riveted or tack welded at its opposite end to flange 187 to provide a compound parabolic reflector 11 for mounting in housing 17 of luminaire 10. It is envisioned that compound parabolic reflector 11 may have configurations consistent with the improvement, other than those of the preferred embodiment described herein. For example, while nineteen two-dimensional segments 73-77, 101- 131 are shown, a greater or lesser number of segments may be used.

Landscapes

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

Abstract

La présente invention a trait à des luminaires (10) devant éclairer une zone cible (13) ayant des sous-zones situées à l'avant et sur les parties latérales du luminaire. Ce luminaire comprend un boîtier (17), une douille (13) située dans le boîtier et devant supporter une lampe électrique (19) ayant généralement une position verticale, un réflecteur parabolique composite (11) situé également dans le boîtier et entourant en partie une lampe à régions plurielles (51, 53, 55) avec emplacement de segment d'émission de lumière (47). Les formes préférées du réflecteur parabolique composite comprennent un centre segmenté (59) et des parties latérales (61, 63). La partie centrale segmentée préférée dispose d'une première pluralité de segments paraboliques bidimensionnels (73, 75, 77), chacun d'entre eux ayant un point focal (79, 81, 83) situé dans une des régions d'emplacement de segment d'émission de lumière différente. Les parties latérales préférées disposent chacune d'une deuxième pluralité de segments paraboliques bidimensionnels (101-103) avec points focaux (138) situés le long de l'emplacement de segment d'émission de lumière. Les segments paraboliques sont efficaces pour diriger l'essentiel de la lumière vers les sous-zones cibles.
EP07795212A 2007-05-23 2007-05-23 Luminaire avec reflecteur parabolique composite Active EP2147247B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/012256 WO2008150254A1 (fr) 2007-05-23 2007-05-23 Luminaire avec réflecteur parabolique composite

Publications (3)

Publication Number Publication Date
EP2147247A1 true EP2147247A1 (fr) 2010-01-27
EP2147247A4 EP2147247A4 (fr) 2011-03-30
EP2147247B1 EP2147247B1 (fr) 2012-11-07

Family

ID=40093939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07795212A Active EP2147247B1 (fr) 2007-05-23 2007-05-23 Luminaire avec reflecteur parabolique composite

Country Status (5)

Country Link
EP (1) EP2147247B1 (fr)
AU (1) AU2007354673B2 (fr)
CA (1) CA2688071C (fr)
ES (1) ES2394370T3 (fr)
WO (1) WO2008150254A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB478261A (en) * 1936-07-16 1938-01-17 Herbert Biggleston Improvements in or relating to lighting fittings
DE679203C (de) * 1935-06-18 1939-07-31 Zeiss Ikon A G Goerz Werk Reflektor zur Erzeugung eines Ianggestreckten Lichtfeldes
FR2452665A1 (fr) * 1979-03-29 1980-10-24 Gte Prod Corp Reflecteur pour appareil d'eclairage
US4358816A (en) * 1980-09-05 1982-11-09 General Electric Company Roadway luminaire
US6338564B1 (en) * 2000-02-28 2002-01-15 Hubbell Incorporated Optical housing with vertical light source

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679203C (de) * 1935-06-18 1939-07-31 Zeiss Ikon A G Goerz Werk Reflektor zur Erzeugung eines Ianggestreckten Lichtfeldes
GB478261A (en) * 1936-07-16 1938-01-17 Herbert Biggleston Improvements in or relating to lighting fittings
FR2452665A1 (fr) * 1979-03-29 1980-10-24 Gte Prod Corp Reflecteur pour appareil d'eclairage
US4358816A (en) * 1980-09-05 1982-11-09 General Electric Company Roadway luminaire
US6338564B1 (en) * 2000-02-28 2002-01-15 Hubbell Incorporated Optical housing with vertical light source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008150254A1 *

Also Published As

Publication number Publication date
WO2008150254A1 (fr) 2008-12-11
CA2688071C (fr) 2014-04-22
EP2147247A4 (fr) 2011-03-30
CA2688071A1 (fr) 2008-12-11
AU2007354673A1 (en) 2008-12-11
AU2007354673B2 (en) 2013-05-02
EP2147247B1 (fr) 2012-11-07
ES2394370T3 (es) 2013-01-31

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