EP1724521B1 - Lighting apparatus with seal arranged between reflector and refractor - Google Patents

Lighting apparatus with seal arranged between reflector and refractor Download PDF

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Publication number
EP1724521B1
EP1724521B1 EP06111418A EP06111418A EP1724521B1 EP 1724521 B1 EP1724521 B1 EP 1724521B1 EP 06111418 A EP06111418 A EP 06111418A EP 06111418 A EP06111418 A EP 06111418A EP 1724521 B1 EP1724521 B1 EP 1724521B1
Authority
EP
European Patent Office
Prior art keywords
reflector
refractor
lid
seal
lighting apparatus
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.)
Not-in-force
Application number
EP06111418A
Other languages
German (de)
French (fr)
Other versions
EP1724521A3 (en
EP1724521A2 (en
Inventor
Flavio Mauro Sangiorgio
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.)
FAEL SpA
Original Assignee
FAEL SpA
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 FAEL SpA filed Critical FAEL SpA
Priority to PL06111418T priority Critical patent/PL1724521T3/en
Publication of EP1724521A2 publication Critical patent/EP1724521A2/en
Publication of EP1724521A3 publication Critical patent/EP1724521A3/en
Application granted granted Critical
Publication of EP1724521B1 publication Critical patent/EP1724521B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • 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

Definitions

  • the present invention relates to a lighting apparatus with a seal arranged between reflector and refractor.
  • Lighting apparatuses preferably for lighting large surfaces, comprising a power supply body connected to a lamp housed in a reflector which supports a refractor inferiorly closed by a cover at least partially transparent to light, are known.
  • the reflector-refractor coupling along with the lower refraction lens, allows to optimise the light produced by the lamp; in particular, the refraction capacity of the lower lens allows to better exploit the "most" vertical light rays, i.e. those which do not encounter the surface of the reflector.
  • the horizontal surface lighted "on ground level" (working surface) can be increased by constructively imposing a high refraction index.
  • the reflector-retractor combination allows to increase the level of lighting on the working surface thus considerably reducing dazzling.
  • This type of apparatus is widely used in industrial sheds, in food warehouses and, in general, in large environments where considerable amounts of dust or hazardous liquid residues in suspension are present.
  • the reflector-refractor coupling may be made by interference between the widest lower end of the reflector and the narrower upper end of the refractor. Said coupling is further ensured by a plurality of screw/nut screw connections in the aforesaid interference zone between reflector and refractor.
  • An example of said coupling is disclosed in US 6 095 662 .
  • the nature of the reflector-refractor coupling does not ensure the absence of infiltrations of hazardous particles which can react with the internal electrical contacts causing fires.
  • the seal is very easy to assemble thus minimising the waste of time during the assembly step of the apparatus.
  • a lighting apparatus 1 comprises a power supply body 2 connected to a semi-reflector 3, in which a lamp (not shown) is housed.
  • the body 2 contains electrical components (not shown) for powering the lamp.
  • Said semi-reflector 3 supports a refractor 4 by means of a socket-type connection system obtained by interference between a wider lower end 5 of the semi-reflector 3 and a narrower upper end 6 of the refractor 4.
  • a seal 7 is interposed between the semi-reflector 3 and the refractor 4 where an internal protrusion 16 of the upper end 6 of the refractor 4 overlaps and rests on an external protrusion 17 of the lower end 5 of the semi-reflector 3 ( figure 2 ).
  • Screw/nut screw connections 8 ensure the connection between the semi-reflector 3 and the refractor 4 with an appropriate compression of the seal 7.
  • the assembly of the apparatus 1 is very simple ( figures 3-4 ).
  • the seal 7 is positioned at the lower end 5 of the semi-reflector 3 to which the power supply body 2 is connected; then, the refractor 4 is moved downwards making the semi-reflector 3 pass through the internal cavity of the refractor 4 until the upper end 6 of the refractor 4 interferes with the lower end 5 of the semi-reflector 3.
  • the apparatus is ready to be used without the risk of infiltration of hazardous or however undesired particles which may interact with the electrical connections causing fires.

Abstract

A lighting apparatus is described comprising a power supply body (2) connected to a reflector (3), in which a lamp is accommodated, which supports a refractor (4), inferiorly closed by a lid (9) at least partially transparent to light, by means of a socket-type connection obtained by interference between a wider lower end (5) of the reflector (3) and a narrower upper end (6) of the refractor (4). Said apparatus further comprises a seal (7) interposed between the reflector (3) and the refractor (4) where they interfere.

Description

  • The present invention relates to a lighting apparatus with a seal arranged between reflector and refractor.
  • Lighting apparatuses, preferably for lighting large surfaces, comprising a power supply body connected to a lamp housed in a reflector which supports a refractor inferiorly closed by a cover at least partially transparent to light, are known.
  • The reflector-refractor coupling, along with the lower refraction lens, allows to optimise the light produced by the lamp; in particular, the refraction capacity of the lower lens allows to better exploit the "most" vertical light rays, i.e. those which do not encounter the surface of the reflector.
  • The horizontal surface lighted "on ground level" (working surface) can be increased by constructively imposing a high refraction index.
  • Furthermore, the reflector-retractor combination allows to increase the level of lighting on the working surface thus considerably reducing dazzling.
  • This type of apparatus is widely used in industrial sheds, in food warehouses and, in general, in large environments where considerable amounts of dust or hazardous liquid residues in suspension are present.
  • Severe fire prevention standards exist which impose the manufacturer of the aforesaid type of apparatus to maintain the internal part of the lamp where the electrical connections for powering the lamp itself are present well insulated.
  • The reflector-refractor coupling may be made by interference between the widest lower end of the reflector and the narrower upper end of the refractor. Said coupling is further ensured by a plurality of screw/nut screw connections in the aforesaid interference zone between reflector and refractor. An example of said coupling is disclosed in US 6 095 662 .
  • The nature of the reflector-refractor coupling does not ensure the absence of infiltrations of hazardous particles which can react with the internal electrical contacts causing fires.
  • It is the object of the present invention to make a lighting apparatus with reflector and refractor coupled so as to avoid the infiltration of hazardous or however undesired substances inside the apparatus where there are the electrical power contacts of the lamp.
  • According to the invention, such object is reached by a lighting apparatus as disclosed in claim 1.
  • The seal is very easy to assemble thus minimising the waste of time during the assembly step of the apparatus.
  • These and other features of the present invention will become more apparent from the following detailed description of a practical embodiment thereof shown by way of non-limitative example in the attached drawings, in which:
    • figure 1 shows a partially sectioned front view of an apparatus according to the present invention;
    • figure 2 shows a portion on magnified scale of the apparatus in figure 1;
    • figure 3 shows the same portion of figure 2 in a disassembled condition;
    • figure 4 shows a partially sectioned frontal view of the disassembled apparatus.
  • A lighting apparatus 1 comprises a power supply body 2 connected to a semi-reflector 3, in which a lamp (not shown) is housed.
  • The body 2 contains electrical components (not shown) for powering the lamp.
  • Said semi-reflector 3 supports a refractor 4 by means of a socket-type connection system obtained by interference between a wider lower end 5 of the semi-reflector 3 and a narrower upper end 6 of the refractor 4.
  • A seal 7 is interposed between the semi-reflector 3 and the refractor 4 where an internal protrusion 16 of the upper end 6 of the refractor 4 overlaps and rests on an external protrusion 17 of the lower end 5 of the semi-reflector 3 (figure 2).
  • Screw/nut screw connections 8 ensure the connection between the semi-reflector 3 and the refractor 4 with an appropriate compression of the seal 7.
  • A lid 9 provided with a refraction lens 15 inferiorly closes the refractor 4 by means of fastening means 10 comprising a further seal 11.
  • The assembly of the apparatus 1 is very simple (figures 3-4).
  • Firstly, the seal 7 is positioned at the lower end 5 of the semi-reflector 3 to which the power supply body 2 is connected; then, the refractor 4 is moved downwards making the semi-reflector 3 pass through the internal cavity of the refractor 4 until the upper end 6 of the refractor 4 interferes with the lower end 5 of the semi-reflector 3.
  • Finally, the screw/nut screw connections 10 are tightened and the refractor 4 is inferiorly closed by means of the lid 9 with refraction lens 15.
  • The apparatus is ready to be used without the risk of infiltration of hazardous or however undesired particles which may interact with the electrical connections causing fires.

Claims (5)

  1. A lighting apparatus comprising a power supply body (2) connected to a reflector (3), in which a lamp is accommodated, which supports a refractor (4), inferiorly closed by a lid (9) at least partially transparent to light, by means of a socket-type connection obtained by interference between a wider lower end (5) of the reflector (3) and a narrower upper end (6) of the refractor (4), and it further comprises a seal (7) arranged between the reflector (3) and the refractor (4) where they interfere, characterised in that said connection system consists in overlapping and resting an internal protrusion (16) of the upper end (6) of the refractor (4) on an external protrusion (17) of the lower end (5) of the reflector (3).
  2. An apparatus according to claim 1, characterised in that said socket-type connection system is ensured by a plurality of screw/nut screw connections (8).
  3. An apparatus according to claim 1, characterised in that said glazed lid consists of a lid (9) provided with a refraction lens (15).
  4. An apparatus according to claim 3, characterised in that said lid (9) with refraction lens (15) is connected to the refractor (4) by means of fastening means (10) comprising a further seal (11).
  5. An apparatus according to claim 1, characterised in that said reflector is a semi-reflector (3).
EP06111418A 2005-05-16 2006-03-21 Lighting apparatus with seal arranged between reflector and refractor Not-in-force EP1724521B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06111418T PL1724521T3 (en) 2005-05-16 2006-03-21 Lighting apparatus with seal arranged between reflector and refractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000179U ITMI20050179U1 (en) 2005-05-16 2005-05-16 LIGHTING APPLIANCE WITH INTERLACING GASKET BETWEEN REFLECTOR AND REFLECTOR

Publications (3)

Publication Number Publication Date
EP1724521A2 EP1724521A2 (en) 2006-11-22
EP1724521A3 EP1724521A3 (en) 2007-01-03
EP1724521B1 true EP1724521B1 (en) 2008-08-06

Family

ID=36160001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06111418A Not-in-force EP1724521B1 (en) 2005-05-16 2006-03-21 Lighting apparatus with seal arranged between reflector and refractor

Country Status (5)

Country Link
EP (1) EP1724521B1 (en)
AT (1) ATE403834T1 (en)
DE (1) DE602006002059D1 (en)
IT (1) ITMI20050179U1 (en)
PL (1) PL1724521T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1992196A (en) * 1934-02-14 1935-02-26 Samuel S Dauman Lighting fixture
US5434765A (en) * 1994-03-10 1995-07-18 Holophane Corporation Luminaire assembly
US6095662A (en) * 1997-05-19 2000-08-01 Hubbell Incorporated Lighting fixture with emergency illuminating device

Also Published As

Publication number Publication date
DE602006002059D1 (en) 2008-09-18
PL1724521T3 (en) 2009-01-30
ITMI20050179U1 (en) 2006-11-17
ATE403834T1 (en) 2008-08-15
EP1724521A3 (en) 2007-01-03
EP1724521A2 (en) 2006-11-22

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