EP0007527A1 - Eclairage de secours - Google Patents

Eclairage de secours Download PDF

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Publication number
EP0007527A1
EP0007527A1 EP79102402A EP79102402A EP0007527A1 EP 0007527 A1 EP0007527 A1 EP 0007527A1 EP 79102402 A EP79102402 A EP 79102402A EP 79102402 A EP79102402 A EP 79102402A EP 0007527 A1 EP0007527 A1 EP 0007527A1
Authority
EP
European Patent Office
Prior art keywords
reflector
light according
emergency light
emergency
light
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.)
Ceased
Application number
EP79102402A
Other languages
German (de)
English (en)
Inventor
Achim Dr. Ing. Dipl.-Ing. Willing
Bruno Dr. Ing. Dipl.-Ing. Weiss
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.)
Rudolf Zimmermann & Co Kg GmbH
Original Assignee
Rudolf Zimmermann & Co Kg GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25775196&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0007527(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19782833113 external-priority patent/DE2833113A1/de
Priority claimed from DE19792915585 external-priority patent/DE2915585A1/de
Application filed by Rudolf Zimmermann & Co Kg GmbH filed Critical Rudolf Zimmermann & Co Kg GmbH
Publication of EP0007527A1 publication Critical patent/EP0007527A1/fr
Ceased 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
    • F21V5/00—Refractors for 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

Definitions

  • the invention relates to an emergency light with a light source with a substantially uniform radiation characteristic.
  • the level of illumination ie the adaptation in the case of emergency lighting, is in the range of mesopic vision, while the general lighting takes place in photopic vision. This means that the evaluation of a brightness pattern with emergency lighting is different than with normal lighting. For example, reliable color recognition is no longer guaranteed for emergency lighting. In addition, only rough details need to be recognized in the emergency lighting. Questions about the convenience of lighting and similar items that are of considerable importance in general lighting are addressed in emergency lighting not asked at all. In addition, a completely different type of glare is considered in emergency lighting.
  • the reflector should be designed and the light source should be arranged in such a way that the uniform illumination of the usable surface is made up exclusively of rays reflected at most once, and that the distance from an area of the usable surface irradiated by a specific reflector section of the reflector The larger the distance of the reflector section from the reflector axis, the greater the axis of the gate.
  • the desired light intensity distribution is either if the direct lamp luminous flux is not taken into account, or the luminous intensity distribution - excluding the reflected light - is described by where I lamp is the direct light distribution of the lamp.
  • FIGS. 1 and 2 Two types of optics are possible according to the invention (FIGS. 1 and 2).
  • the luminous flux of the reflector element (0 do) results from the luminous intensity distribution of the lamp and the solid angle that the surface element occupies with the lamp.
  • the angular position of the reflector element depends on its position in relation to the lamp and usable surface element and results from the laws of geometric optics.
  • the shape of the reflector results from the additional condition that there should be no discontinuities on the reflector surface within the course of a beam path, except at seams when the beam path passes type I into type II, or if a beam path to build up the reflector is repeated several times (Fig. 3, 4).
  • the shape of the reflector cannot be represented analytically in a simple manner; the calculation process mentioned is also the definition of the reflector surfaces.
  • An increase in luminaire efficiency can be achieved if the luminous flux of the lamp that does not fall directly on the reflector is directed onto the reflector by an additional dome mirror. This is also achieved through the use of domed mirrored lamps.
  • the emergency light 1 shown in Fig. 6 comprises a light source 2, e.g. a good color rendering incandescent lamp, which is surrounded by a reflector 3.
  • This reflector is shaped rotationally symmetrically in such a way that circular zones on the illuminated surface 4 are each assigned zones on the reflector which build up from the center of rotation.
  • the curvature of the reflector 3 is chosen so that a uniform illumination distribution is achieved on the illuminated surface 4.
  • the light intensity of the light source 2 is dimensioned such that this uniform illuminance is approximately the required minimum illuminance, i.e. e.g. 2 lux, corresponds. Thanks to this arrangement, the light intensity drops sharply outside the area to be illuminated, i.e. only scattered radiation gets there.
  • additional devices 5 can be provided, which are only indicated schematically in FIG. 6.
  • Such devices can e.g. be appropriately shaped lenses, or lenses in combination with one or more additional reflectors.
  • the use of lenses or lens combinations is also within the scope of the possibilities according to the invention for achieving uniform light distribution.
  • an aperture ring 6 is shown in FIG. a diffuser, scattered light beams so limited that the maximum beam angle l max does not exceed a certain value, approximately 65 °.
  • a corresponding dimensioning of the reflector 3 or a displacement of the position of the light source 2 along the axis of rotation of the reflector 3 may already be sufficient to limit the radiation angle ⁇ .
  • FIG. 5 shows the geometric relationships which are used as a basis for calculating the required luminous flux for an emergency light 1 suspended above the surface 4 to be illuminated in Höl h.
  • the lighting intensity is considered at a point A which lies at a distance r from the base F below the light source 2 of the emergency light 1.
  • the light source 2 is shown only schematically in the drawing and represents the entire emergency light 1.
  • the luminous flux required for illuminating the surface 4 is calculated once under the conditions of conventional conditions, namely that the illuminance decreases radially outwards from the base and the minimum illuminance, e.g. 2 lux, is achieved (which results in correspondingly higher illuminance levels in the vicinity of the base point F) and, on the other hand, the case where means (not shown in FIG. 5) for producing a uniform light distribution produce the horizontal illuminance level over the entire illuminated area Area is constant, it follows that in the latter case the required luminous flux is seven times less than in the first case.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP79102402A 1978-07-28 1979-07-12 Eclairage de secours Ceased EP0007527A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19782833113 DE2833113A1 (de) 1978-07-28 1978-07-28 Notleuchte
DE2833113 1978-07-28
DE19792915585 DE2915585A1 (de) 1979-04-18 1979-04-18 Notleuchte
DE2915585 1979-04-18

Publications (1)

Publication Number Publication Date
EP0007527A1 true EP0007527A1 (fr) 1980-02-06

Family

ID=25775196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102402A Ceased EP0007527A1 (fr) 1978-07-28 1979-07-12 Eclairage de secours

Country Status (1)

Country Link
EP (1) EP0007527A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153416A1 (fr) * 1983-08-19 1985-09-04 NEGISHI, Masataka Dispositif d'eclairage
DE3507143A1 (de) * 1984-03-01 1985-10-03 Fusion Systems Corp., Rockville, Md. Lampe zur abgabe eines relativ gleichmaessigen lichtstroms

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217720C (fr) *
DE297125C (fr) *
DE217742C (fr) *
FR898886A (fr) * 1942-10-17 1945-05-09 Philips Nv Réflecteur en forme de cloche
GB599334A (en) * 1945-09-14 1948-03-10 Charlotte Ettinger Getz Electric light bulb
FR1050992A (fr) * 1952-02-21 1954-01-12 Réflecteur pour lampes à rayonnement infra-rouge et son procédé d'exécution
DE1005462B (de) * 1953-11-11 1957-04-04 Siemens Ag Spiegelreflektor aus Aluminium fuer elektrische Leuchten
DE1046840B (de) * 1956-09-27 1958-12-18 Egyesuelt Izzolampa Innenmattierte Gluehlampe und Verfahren zum Mattieren derselben
FR1470102A (fr) * 1966-02-25 1967-02-17 Dispositif d'éclairage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217720C (fr) *
DE297125C (fr) *
DE217742C (fr) *
FR898886A (fr) * 1942-10-17 1945-05-09 Philips Nv Réflecteur en forme de cloche
GB599334A (en) * 1945-09-14 1948-03-10 Charlotte Ettinger Getz Electric light bulb
FR1050992A (fr) * 1952-02-21 1954-01-12 Réflecteur pour lampes à rayonnement infra-rouge et son procédé d'exécution
DE1005462B (de) * 1953-11-11 1957-04-04 Siemens Ag Spiegelreflektor aus Aluminium fuer elektrische Leuchten
DE1046840B (de) * 1956-09-27 1958-12-18 Egyesuelt Izzolampa Innenmattierte Gluehlampe und Verfahren zum Mattieren derselben
FR1470102A (fr) * 1966-02-25 1967-02-17 Dispositif d'éclairage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153416A1 (fr) * 1983-08-19 1985-09-04 NEGISHI, Masataka Dispositif d'eclairage
EP0153416A4 (fr) * 1983-08-19 1987-03-02 Masataka Negishi Dispositif d'eclairage.
DE3507143A1 (de) * 1984-03-01 1985-10-03 Fusion Systems Corp., Rockville, Md. Lampe zur abgabe eines relativ gleichmaessigen lichtstroms

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT NL SE

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19820719

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WILLING, ACHIM, DR. ING. DIPL.-ING.

Inventor name: WEISS, BRUNO, DR. ING. DIPL.-ING.