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EP0619006B1 - Reflecteur pour luminaire et luminaire pourvu d'un tel reflecteur - Google Patents

Reflecteur pour luminaire et luminaire pourvu d'un tel reflecteur Download PDF

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Publication number
EP0619006B1
EP0619006B1 EP92924999A EP92924999A EP0619006B1 EP 0619006 B1 EP0619006 B1 EP 0619006B1 EP 92924999 A EP92924999 A EP 92924999A EP 92924999 A EP92924999 A EP 92924999A EP 0619006 B1 EP0619006 B1 EP 0619006B1
Authority
EP
European Patent Office
Prior art keywords
sections
fitting
reflector
diagonal
longitudinal
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.)
Expired - Lifetime
Application number
EP92924999A
Other languages
German (de)
English (en)
Other versions
EP0619006A1 (fr
Inventor
Nils Svendenius
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.)
Fagerhults Belysning AB
Original Assignee
Fagerhults Belysning AB
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 Fagerhults Belysning AB filed Critical Fagerhults Belysning AB
Publication of EP0619006A1 publication Critical patent/EP0619006A1/fr
Application granted granted Critical
Publication of EP0619006B1 publication Critical patent/EP0619006B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • 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
    • F21V7/0025—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
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the present invention refers to a reflector for an electrical radiation fitting and an electrical radiation fitting furnished with such a reflector.
  • An objective of the invention is to improve and develop known techniques in this field primarily in the above mentioned respects. More precisely, the invention is to make possible a considerable, flexible light control even in longitudinal direction of an electric radiation fitting. It should even be possible, with use of a certain given fitting shell, by arranging differently shaped reflectors in said shell, to accomplish different light spread patterns, primarily in longitudinal direction of the fitting with maintained light spread in transverse direction of the fitting.
  • a reflector according to the invention is designated in the drawings by 1 in its entirety and may consist of either a homogeneous body of metal and/or plastic material and/or glass and/or ceramics or several loose segments which together, preferably assembled, e.g. glued or welded together form a structure of e.g. a kind as shown in the drawings.
  • a reflector is, at least on its interior side, provided with a reflecting layer 2 of e.g. aluminum.
  • the reflector or its parts, respectively may be produced by compression molding, injection molding, casting, deep drawing and similar manufacturing methods as known per se.
  • application of layer 2 is known per se, e.g. by adhesion, evaporation, anodization etc, unless the material of the reflector per se offers a reflecting layer which, e.g. by polishing, can be made more efficient as to its reflecting properties.
  • the reflector design as shown in the drawings shows two top sections 3 and 4, two longitudinal sections 5 and 6 connected thereto, four diagonal sections 7 - 10 connected to both said top sections and said longitudinal sections, as well as transverse section 11 and 12, which mainly connect with their ends to a pair of diagonal sections.
  • the terms "transverse”, “diagonal” and “longitudinal” have been chosen with respect to the longitudinal extension of an elongated radiation fitting. Consequently, the longitudinal sections reflect radiation mainly laterally from the fitting, the transverse sections in longitudinal direction of the fitting and the diagonal sections both in transverse and longitudinal direction.
  • a light source 13 particularly one or several fluorescent tubes
  • there occurs once reflected radiation i.e. radiation which, after leaving the light or radiation source, impacts one of the said sections and is then reflected away from the reflector, as well as multiply reflected radiation, where radiation travels between at least two sections, before it leaves the reflector.
  • the sectional view according to fig. 5 is entirely symmetrical with respect to the axis H.
  • the cross section may consist of the involution 14 of a circle or a parabola part as well as one or several parabola parts 15 and one or several further parabola parts 16, 16a, 16b, 16c and 16d, respectively, or some other quadratic curve.
  • the cross section according to fig. 5 generates, when it runs at right angle through the generatrix lines 17 and 18, respectively, the reflector sections 3 - 6. These sections are limited laterally by the sections 7 - 10 cutting the generated envelope surface along lines 3', 3" - 6', 6". These and other lines must not necessarily be acute lines. Instead, there may be more or less gently rounded transitional areas between interconnecting sections, which latter even may be somewhat convex and/or concave in planes parallel to the generatrix plane. It is important, however, that the design of details as described herein and shown in the drawings is maintained per se and/or in combination for ensuring an advantageous total effect.
  • the section 7 - 10 are generated, when a parabola part or several composed parabola parts are within a plane, which includes an angle alpha with the cross sectional plane A in figs. 1 - 3 and runs along line or curve 19 respectively 20 respectively 21 respectively 22.
  • the cross sectional plan B includes an angle ⁇ with line or curve 19 respectively 20 respectively 21 respectively 22.
  • the reflector section 7 shown is a mirror image of reflector section 10 in that vertical plane C, which goes through the longitudinal axis of fluorescent tube 13.
  • reflector section 8 is a mirror image of reflector section 9 in the same vertical plane.
  • Reflector section 7 is a mirror image of reflector section 8 in that plane, which is formed by the cross section A.
  • Reflector sections 7 - 10 must not necessarily be mirror images of each other as described above but may be mutually entirely different. All are formed, however, in a manor as described above, but may have mutually different values of angle alpha and angle ⁇ .
  • the parabola parts generating the sections may also be different as well as lines or curves 17 - 22.
  • the reflector sections 11 and 12 are generated by a curve 23' and 24', respectively, which lie in a vertical plane parallel to the longitudinal axis of fluorescent tube 13, and by a line or curve 23 and 24, respectively, standing at right angle to the said vertical plane.
  • the curve 23' and 24', respectively, may consist of one or several straight lines or parabola parts.
  • the reflector sections 11 and 12 are delimited by the sections 7 and 10 respectively 8 and 9, when the former intersect the latter.
  • the reflector sections 11 and 12 may be mirror images of each other in that vertical plane, which is formed by the cross section A. Deviations as to both generating of and mutual relations between sections 11 and 12 may, however, occur.
  • sections 11 and 12 cut at increasing distance from generatrix 23 respectively 24 increasingly deeper into sections 7 and 10 respectively 8 and 9 to end abruptly at a level of between 20% and 70% preferably app.
  • excellent large abutment surfaces are formed, when the reflectors are to be arranged in series, e.g. according to figs. 8 and 9.
  • the reflector as shown and described has excellent resistance properties, as its structure allows stressing from practically all directions without the sections being deformed or damaged. Therefore, the reflector may be manufactured of very thin material. Furthermore, the structure per se requires a minimum of material, i.e. with respect to achieved illumination effect. Both these circumstances allow together material savings.
  • the reflector and the light fitting as shown in the drawings gives rise to a rotation symmetrical distribution of light at the same time as there is achieved a very good optical and mechanical shielding and a very high rate of efficiency of app. 75%.
  • Asymmetric light control means that the light distribution of the fitting has its maximum in a direction, which forms an angle with a vertical line from the center of the fitting to a point straight below the light source of the fitting.
  • Asymmetric light control means, if the fitting is located properly at a working place, that the working surface will be well illuminated at the same as possible light reflexes are directed away from the face of a person at the working place, and that considerably batter contrast conditions are achieved compared to when a fitting with symmetric light control is placed straight above a working place.
  • Reflector designs allowing control of light in arbitrary directions, i.e. in transverse and longitudinal directions and directions there between, render substantially improve possibilities in illumination planning, e.g. with respect to flexibility, illumination effects etc.
  • reflectors according to the invention may be arranged in series not only in a way as shown in figs. 8 and 9 in longitudinal direction of a fitting but even or only in transverse direction of a fitting.
  • the outer base area of sections 5 and 6 is straight in transverse direction as shown and/or provided with a bevel similar to bevels 27 and 28 or with an outer building up which renders a vertical and transverse abutment surface, excellent properties are achieved to keep in place without extra means a series of reflectors both in longitudinal and/or transverse direction of a fitting.
  • the reflectors may easily be interconnected by e.g. glue and/or mechanical means.
  • the said design of the reflectors concerning the outer shape permits easy and simple insertion into an fitting 31 as shown in fig. 9, where a lower surrounding border 32 may keep in place a series of reflectors even without any extra means.
  • a lower surrounding border 32 may keep in place a series of reflectors even without any extra means.
  • both reflectors and one or several fluorescent tubes may be simply an speedily introduced or removed.
  • its extent in plane C corresponds preferably to app. 50% of the extent in plane A, which means length and widths, while the height preferably app. corresponds to the width.
  • a series of reflectors 1 arranged in a light fitting forms triangle shaped spaces 34 i lateral direction between adjacent reflectors. These spaces may advantageously be used for ventilation of the fitting. Even the interspace formed between the various sections and the lateral surfaces as well as the top surface of a fitting base formed as a parallel epipate may advantageously be used for the same purpose. Furthermore, the outer shape of the reflectors permits in cross section parabola and sector shaped fitting bases apart from the design as shown. The strength of the reflectors allows even use of same as a fitting without any surrounding fitting shell.
  • a reflector respectively a radiation fitting according to the invention provided with such reflectors may be used for any kind of radiation, e.g. radiation of light, infrared heat and ultraviolet radiation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Aerials With Secondary Devices (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (9)

  1. Réflecteur (1) pour un système d'éclairage allongé (31) du type à rayonnement électrique, en particulier pour un système d'éclairage allongé en forme de tube fluorescent, comprenant, sur le côté interne, une couche réfléchissante (2), ainsi qu'une ou plusieurs sections supérieures (3, 4) et des sections longitudinales (5, 6) reliées à ces dernières et s'étendant dans la direction longitudinale du système d'éclairage jusqu'à ladite ou auxdites sections supérieures (3, 4), et les sections longitudinales (5, 6) étant reliées à des sections obliques ou diagonales (7-10), lesdites sections diagonales (7-10) étant reliées à des sections transversales (11, 12) arrangées en position transversale par rapport à la direction longitudinale du système d'éclairage, lesdites sections transversales étant reliées à une paire de sections diagonales (7+10, 8+9) principalement avec leurs extrémités, caractérisé en ce que, dans le but de diriger et de protéger une partie importante de la lumière réfléchie dans les directions diagonale et longitudinale du système d'éclairage, au moins un certain nombre des sections (3-12), y compris les sections diagonales (7-10), sont formées par des génératrices (19-24) et, dans les sections transversales (14-16), par les involutions (14) d'un cercle ou par une ou plusieurs parties paraboliques (15) ou encore par n'importe quelle courbe quadratique qui s'étend à partir d'une source lumineuse (13), et en ce que, afin de réfléchir une partie importante de la lumière dans la direction longitudinale du système d'éclairage, les sections transversales (11, 12), au fur et à mesure que leur distance augmente par rapport aux génératrices associées (23, 24), coupent de plus en plus profondément en direction longitudinale les sections diagonales adjacentes (7-10), respectivement (8, 9), pour se terminer brusquement à un niveau correspondant à une valeur entre 20% et 70% de la hauteur du réflecteur.
  2. Réflecteur selon la revendication 1, caractérisé en ce que les sections diagonales forment des angles uniformes de 30°-60° par rapport à l'axe longitudinal du système d'éclairage.
  3. Réflecteur selon la revendication 1 ou 2, caractérisé en ce que le réflecteur comprend deux sections supérieures (3, 4), deux sections longitudinales (5, 6) reliées aux premières citées, quatre sections diagonales (7-10) reliées aux deux sections supérieures et aux deux sections longitudinales, ainsi que deux sections transversales (11, 12).
  4. Réflecteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les sections longitudinales, les sections diagonales et les sections transversales (5-12) sont formées au moins partiellement par une partie parabolique ou par plusieurs parties paraboliques composites situées dans un plan qui forme un angle alpha avec le plan en section transversale A du réflecteur (1) et qui s'étend le long d'une ligne ou d'une courbe (17-24) qui représente la ligne de base ou la courbe de base de la section respective, ainsi que par un plan vertical s'étendant à travers deux sections diagonales (7+9, 8+10) disposées en diagonale les unes par rapport aux autres en formant un angle avec la ligne de base ou avec la courbe de base des sections respectives conformément à l'équation: 0,0 < (alpha) ≤ 90,0°; 0,0 < (β) ≤ 90,0°.
  5. Réflecteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les sections supérieures (3, 4) et les sections longitudinales (5, 6) sont délimitées latéralement par les sections diagonales (7-10) coupant la surface enveloppée obtenue le long des lignes (3', 3"-6', 6"), les zones d'intersection étant configurées sous forme soit d'arêtes vives, soit d'arrondis.
  6. Réflecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les sections transversales (11, 12) sont pliées vers l'extérieur de préférence à l'horizontale dans des directions mutuellement opposées pour former des gradins analogues à ceux d'une étagère (25, 26) dont les bords externes libres sont disposés dans un plan vertical commun avec le bord externe libre (7'+10', 8'+9') des sections diagonales adjacentes (7+10, 8+9) et avec la partie de base inférieure externe des sections transversales (11, 12) qui possèdent un chanfrein vertical externe (27, 28).
  7. Réflecteur selon la revendication 6, caractérisé en ce qu'on pratique, au-dessus des sections transversales (11, 12), deux ouvertures (29, 30) de forme approximativement triangulaire et destinées au réflecteur, à travers lesquelles on peut introduire un ou plusieurs tubes fluorescents (13), les sections transversales (11, 12) étant, soit fixes, soit intégrées dans la base du réflecteur, soit configurées, ou arrangées sous forme d'éléments séparés ou encore munies d'ouvertures traversantes en direction verticale destinées à l'introduction de tubes fluorescents en direction radiale.
  8. Réflecteur selon l'une quelconque des revendications 1-7, caractérisé en ce que l'étendue du réflecteur (1) à la fois en direction verticale et en direction longitudinale est approximativement égale, tandis que l'étendue en direction transversale représente le double de l'étendue en direction longitudinale ou en hauteur.
  9. Système d'éclairage par rayonnement muni d'un réflecteur selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le système d'éclairage comprend plusieurs réflecteurs (1) montés en série dans la direction longitudinale et/ou transversale du système d'éclairage, au moins une partie des lignes ou des surfaces de délimitation des réflecteurs, coopérant avec la base du système d'éclairage, par exemple avec son extrémité représentant des espaces intermédiaires (34) en forme de triangles ménagés entre des réflecteurs adjacents étant prévus pour favoriser la ventilation du système d'éclairage, sous forme d'ouvertures de ventilation.
EP92924999A 1991-12-09 1992-12-07 Reflecteur pour luminaire et luminaire pourvu d'un tel reflecteur Expired - Lifetime EP0619006B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9103631 1991-12-09
SE9103631A SE469804B (sv) 1991-12-09 1991-12-09 Reflektor till en elektrisk strålningsarmatur samt en med en sådan reflektor försedd elektrisk strålningsarmatur
PCT/SE1992/000842 WO1993012376A1 (fr) 1991-12-09 1992-12-07 Reflecteur pour luminaire et luminaire pourvu d'un tel reflecteur

Publications (2)

Publication Number Publication Date
EP0619006A1 EP0619006A1 (fr) 1994-10-12
EP0619006B1 true EP0619006B1 (fr) 1999-03-10

Family

ID=20384547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92924999A Expired - Lifetime EP0619006B1 (fr) 1991-12-09 1992-12-07 Reflecteur pour luminaire et luminaire pourvu d'un tel reflecteur

Country Status (6)

Country Link
EP (1) EP0619006B1 (fr)
AT (1) ATE177521T1 (fr)
AU (1) AU3121293A (fr)
DE (1) DE69228614T2 (fr)
SE (1) SE469804B (fr)
WO (1) WO1993012376A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036868A1 (fr) 1999-11-12 2001-05-25 Koninklijke Philips Electronics N.V. Luminaire sans lamelles

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20010464A1 (it) * 2001-05-18 2002-11-18 Fiat Ricerche Dispositivo di illuminazione a luminanza controllata.
ITTO20010460A1 (it) * 2001-05-18 2002-11-18 Fiat Ricerche Dispositivo di illuminazione a luminanza controllata.
DE10151958A1 (de) 2001-10-22 2003-04-30 Zumtobel Staff Gmbh Leuchte mit mehreren Topfreflektoren
DE102004005917A1 (de) * 2004-02-06 2005-08-25 Zumtobel Staff Gmbh Reflektoranordnung für eine Leuchte mit mehreren in Reihe angeordneten Reflektorkammern
CN101545609B (zh) * 2008-03-25 2010-09-29 山西光宇电源有限公司 Led路灯多曲面反射器
CN105444004A (zh) * 2016-01-04 2016-03-30 众普森科技（株洲）有限公司 一种适用户外灯具的防眩光模组

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246137A (en) * 1966-04-12 Air diffusing light fixture
US2242590A (en) * 1939-08-04 1941-05-20 Moreau Marcel Eloi Light reflector
US3902059A (en) * 1974-02-15 1975-08-26 Esquire Inc Light reflector system
DE2740487C3 (de) * 1977-09-08 1981-06-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Elektronisches Blitzgerät
US4389699A (en) * 1981-09-11 1983-06-21 Armstrong World Industries, Inc. Swivel cell light fixture
US4751626A (en) * 1987-05-28 1988-06-14 Columbia Lighting, Inc. Reflector system for a luminaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036868A1 (fr) 1999-11-12 2001-05-25 Koninklijke Philips Electronics N.V. Luminaire sans lamelles
US6467934B1 (en) 1999-11-12 2002-10-22 Koninklijke Philips Electronics N.V. Reflector system for elongated light source

Also Published As

Publication number Publication date
DE69228614D1 (de) 1999-04-15
DE69228614T2 (de) 1999-09-30
AU3121293A (en) 1993-07-19
SE469804B (sv) 1993-09-13
SE9103631L (sv) 1993-06-10
WO1993012376A1 (fr) 1993-06-24
EP0619006A1 (fr) 1994-10-12
ATE177521T1 (de) 1999-03-15
SE9103631D0 (sv) 1991-12-09

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