GB2322441A - Luminaires - Google Patents

Luminaires Download PDF

Info

Publication number
GB2322441A
GB2322441A GB9703560A GB9703560A GB2322441A GB 2322441 A GB2322441 A GB 2322441A GB 9703560 A GB9703560 A GB 9703560A GB 9703560 A GB9703560 A GB 9703560A GB 2322441 A GB2322441 A GB 2322441A
Authority
GB
United Kingdom
Prior art keywords
mounting ring
ring
luminaire according
lens
outer mounting
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
GB9703560A
Other versions
GB9703560D0 (en
GB2322441B (en
Inventor
Mark Adam Hawkins
Katherine Howes
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.)
Illuma Lighting Ltd
Original Assignee
Illuma Lighting 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 Illuma Lighting Ltd filed Critical Illuma Lighting Ltd
Priority to GB9703560A priority Critical patent/GB2322441B/en
Publication of GB9703560D0 publication Critical patent/GB9703560D0/en
Publication of GB2322441A publication Critical patent/GB2322441A/en
Application granted granted Critical
Publication of GB2322441B publication Critical patent/GB2322441B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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
    • F21V17/16—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 deformation of parts; Snap action mounting
    • F21V17/164—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 deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

A moulded plastics luminaire comprises a circular lens (2) formed around its periphery with an inner mounting ring (5) and a housing member (2) formed with an outer mounting ring (6) and adapted to receive the inner mounting ring in sealing fitted connection. A first seal is provided between a sealing ring (3) housed in the inner mounting ring and an inclined annular surface (8) on the outer mounting ring. The inner mounting ring is a snap-fit into the outer mounting ring and a second seal is provided between opposed cylindrical surfaces (9,10) on the inner and outer mounting rings.

Description

LUMINAIRES The invention relates to luminaires.
Where luminaires are to be used in locations where there may be water and/or dust present, it is necessary for them to be water and dust proof to levels required by the standard (IEC 529) IP65. In such cases, the lens is normally fitted to the housing by screws with a rubber seal located between the components.
The present invention sets out to provide a luminaire in which a good seal is provided between the lens and a housing member but in which the lens can nevertheless be readily fitted and removed from the housing member by means of a snap-fit.
According to the present invention there is provided a luminaire comprising: a generally circular lens of moulded plastics and being formed around its periphery with an inner mounting ring; a housing member of moulded plastics and being formed with an outer mounting ring adapted to receive the inner mounting ring in sealing fitted connection; wherein a first seal is provided between a sealing ring housed in one of the mounting rings and an annular surface on the other mounting ring; and wherein means are provided on the inner and outer mounting rings such that the inner mounting ring is a snap-fit into the outer mounting ring.
A preferred embodiment of the invention is described below with reference to the accompanying drawings in which: Figure 1 is an exploded cross-sectional view through the housing and lens of a luminaire; and Figure 2 is an enlarged cross-sectional view showing the mounting connection between the housing and the lens with the inner mounting ring of the lens received within the outer mounting ring of the housing member.
As shown in Figure 1, the luminaire comprises a generally circular housing member 1, a generally circular lens 2 and a silicon sealing ring 3. Other components of the luminaire have been omitted. When the luminaire is fitted to a ceiling, the housing member will be located above the lens as shown in the drawings.
The lens 2 is formed of a part spherical dish 4 with a mounting ring 5 formed around its periphery. The mounting ring 5~provides the inner ring of a connection between the lens and the housing member.
The housing member has a mounting ring 6 formed at its periphery which provides the outer ring of the connection and is adapted to receive the inner mounting ring to form a sealing fitted connection between the lens and the housing member.
Referring to Figure 2, it can be seen that the sealing ring 3 is located in a groove 7 formed on the inner ring 5. In the fitted condition, an annular surface 8 formed on the outer ring 6 bears against the sealing ring to form a first seal between the lens and the housing member. The annular surface 8 is inclined to the axis of the luminaire at an angle of about 20 ; this helps to form a tight seal whilst enabling the connection between the lens and housing member to be readily made and broken.
The surface 8 may be purely frustoconical or may be slightly concave to help increase the area of contact with the sealing ring.
Just above the first seal, a cylindrical surface 9 on the outer ring 6 contacts an opposed cylindrical surface 10 on the inner ring 5. These opposed cylindrical surfaces 9 and 10 provided a second seal between the lens and the housing member.
Just above the second seal, a radial surface 11 formed on the free end of the outer ring 6 contacts an opposed radial surface 12 on a shoulder 13 formed on the inner ring 5. These opposed radial surfaces provide a third seal between the lens and the housing.
The cylindrical surface 9 on the outer ring 6 is interrupted by an annular recess 14 which is adapted to receive circumferentially spaced beads 15 which are formed on the cylindrical surface 10 of the inner ring 5. In the preferred embodiment there are three beads 15 each having a circumferential extent of about 600. The beads 15 cooperate with the recess 14 to form a snap-fit. The spaces between the beads provide for sufficient flexibility for the snap-fit to be made and broken without undue effort although one or more notches (not shown) will be provided such that the end of a screwdriver can be inserted between the opposed radial surfaces 11 and 12 for disconnection of the lens from the housing member.
In order to obtain good seals between the mating surfaces and a good snap-fit between the inner and outer rings, it is necessary for the components to be manufactured to close tolerances. This is preferably achieved by moulding the housing member and lens of polycarbonate material. The polycarbonate material may be glass-filled.

Claims (11)

1. A luminaire comprising: a generally circular lens of moulded plastics and being formed around its periphery with an inner mounting ring; a housing member of moulded plastics and being formed with an outer mounting ring adapted to receive the inner mounting ring in sealing fitted connection; wherein a first seal is provided between a sealing ring housed in one of the mounting rings and an annular surface on the other mounting ring; and wherein means are provided on the inner and outer mounting rings such that the inner mounting ring is a snap-fit into the outer mounting ring.
2. A luminaire according to Claim 1, wherein the annular surface is inclined to the axis of the lens.
3. A luminaire according to Claim 1 or Claim 2, wherein a second seal is provided between opposed cylindrical surfaces on the inner and outer mounting rings.
4. A luminaire according to any preceding claim, wherein the sealing ring is housed in a groove formed on the inner mounting ring near the free end thereof and wherein the annular surface is formed on the outer mounting ring.
5. A luminaire according to Claim 2, wherein the annular surface is inclined to the axis of the lens by about 20 .
6. A luminaire according to any preceding claim, wherein a third seal is provided between opposed radial surfaces on the inner and outer mounting rings.
7. A luminaire according to Claim 6, wherein one of the opposed radial surfaces is formed on the free end of the outer mounting ring and the other is formed on a shoulder formed on the inner mounting ring.
8. A luminaire according to Claim 3, wherein a first one of the opposed cylindrical surfaces is formed with an annular recess adapted to receive, as a snap-fit, a plurality of spaced annular beads formed on the second one of the opposed cylindrical surfaces.
9. A luminaire according to Claim 8, wherein the annular recess is formed on the outer mounting ring and wherein the annular beads are provided on the inner mounting ring and comprise three spaced beads each having a circumferential extent of about 600.
10. A luminaire according to any preceding claim, wherein the lens and housing member are formed of a polycarbonate material.
11. A luminaire substantially as described herein with reference to the accompanying drawings.
GB9703560A 1997-02-20 1997-02-20 Luminaires Expired - Fee Related GB2322441B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9703560A GB2322441B (en) 1997-02-20 1997-02-20 Luminaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9703560A GB2322441B (en) 1997-02-20 1997-02-20 Luminaires

Publications (3)

Publication Number Publication Date
GB9703560D0 GB9703560D0 (en) 1997-04-09
GB2322441A true GB2322441A (en) 1998-08-26
GB2322441B GB2322441B (en) 2000-09-13

Family

ID=10808029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9703560A Expired - Fee Related GB2322441B (en) 1997-02-20 1997-02-20 Luminaires

Country Status (1)

Country Link
GB (1) GB2322441B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1248039A1 (en) * 2001-04-03 2002-10-09 Zumtobel Staff GmbH Lamp with water-tight housing
WO2005015082A1 (en) * 2003-07-25 2005-02-17 Ibv Holding Gmbh Light
GB2503732A (en) * 2012-07-06 2014-01-08 Thorpe F W Plc Luminaire diffuser arrangement
WO2015162165A1 (en) * 2014-04-25 2015-10-29 Zumtobel Lighting Gmbh Lamp device having a lamp housing and a lamp cover that can be detachably fastened to the lamp housing
EP3366992A4 (en) * 2015-10-23 2019-11-20 Feng Li Deepwater led lighting sealing structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108775511B (en) * 2018-05-25 2020-04-21 泉州信息工程学院 LED dust explosion-proof anticorrosive fluorescent lamp

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB647374A (en) * 1948-08-10 1950-12-13 Butlers Ltd Improvements relating to vehicle and other lamps
GB1012927A (en) * 1964-05-11 1965-12-08 Lehigh Valley Ind Inc Motor vehicle clearance and marker lamps with shock isolation
GB1369085A (en) * 1972-07-20 1974-10-02 Raydyot Ltd Lamps
US4290098A (en) * 1979-08-10 1981-09-15 Betts Machine Company Receptacle apparatus for housing components of a lighting system
US4827386A (en) * 1988-07-08 1989-05-02 Kenall Manufacturing Co. Water-proof and impact-resistant lighting fixture
EP0315520A1 (en) * 1987-11-04 1989-05-10 Wattohm Technologies Light fixture with fluorescent tubes
US5113331A (en) * 1991-08-09 1992-05-12 General Motors Corporation Vehicle headlamp assembly
EP0677698A1 (en) * 1994-04-16 1995-10-18 ITT Reiss International GmbH Lamp latching system
EP0677701A1 (en) * 1994-04-16 1995-10-18 ITT Reiss International GmbH Lamp
GB2302323A (en) * 1995-06-19 1997-01-15 Grusan Di Sandrin Giannino & C Container having a closure cover

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB647374A (en) * 1948-08-10 1950-12-13 Butlers Ltd Improvements relating to vehicle and other lamps
GB1012927A (en) * 1964-05-11 1965-12-08 Lehigh Valley Ind Inc Motor vehicle clearance and marker lamps with shock isolation
GB1369085A (en) * 1972-07-20 1974-10-02 Raydyot Ltd Lamps
US4290098A (en) * 1979-08-10 1981-09-15 Betts Machine Company Receptacle apparatus for housing components of a lighting system
EP0315520A1 (en) * 1987-11-04 1989-05-10 Wattohm Technologies Light fixture with fluorescent tubes
US4827386A (en) * 1988-07-08 1989-05-02 Kenall Manufacturing Co. Water-proof and impact-resistant lighting fixture
US5113331A (en) * 1991-08-09 1992-05-12 General Motors Corporation Vehicle headlamp assembly
EP0677698A1 (en) * 1994-04-16 1995-10-18 ITT Reiss International GmbH Lamp latching system
EP0677701A1 (en) * 1994-04-16 1995-10-18 ITT Reiss International GmbH Lamp
GB2302323A (en) * 1995-06-19 1997-01-15 Grusan Di Sandrin Giannino & C Container having a closure cover

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1248039A1 (en) * 2001-04-03 2002-10-09 Zumtobel Staff GmbH Lamp with water-tight housing
WO2005015082A1 (en) * 2003-07-25 2005-02-17 Ibv Holding Gmbh Light
EA008009B1 (en) * 2003-07-25 2007-02-27 Ибв Холдинг Гмбх Light
AU2004263632B2 (en) * 2003-07-25 2009-01-29 Ibv Holding Gmbh Light
CN100480579C (en) * 2003-07-25 2009-04-22 Ibv控股有限公司 Lighting equipment
US7585086B2 (en) 2003-07-25 2009-09-08 Ibv Holding Gmbh Thermoplastic light enclosure having upper and lower sealed parts
GB2503732A (en) * 2012-07-06 2014-01-08 Thorpe F W Plc Luminaire diffuser arrangement
WO2015162165A1 (en) * 2014-04-25 2015-10-29 Zumtobel Lighting Gmbh Lamp device having a lamp housing and a lamp cover that can be detachably fastened to the lamp housing
EP3366992A4 (en) * 2015-10-23 2019-11-20 Feng Li Deepwater led lighting sealing structure

Also Published As

Publication number Publication date
GB9703560D0 (en) 1997-04-09
GB2322441B (en) 2000-09-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060220