GB2495009A - Fire containment mechanism - Google Patents

Fire containment mechanism Download PDF

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Publication number
GB2495009A
GB2495009A GB201217878A GB201217878A GB2495009A GB 2495009 A GB2495009 A GB 2495009A GB 201217878 A GB201217878 A GB 201217878A GB 201217878 A GB201217878 A GB 201217878A GB 2495009 A GB2495009 A GB 2495009A
Authority
GB
United Kingdom
Prior art keywords
text
plate
downlighter
containment mechanism
fire containment
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
GB201217878A
Other versions
GB201217878D0 (en
GB2495009B (en
Inventor
Gary Cream
Andrew Kilborn
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.)
ORLUNA LED TECHNOLOGIES Ltd
Original Assignee
ORLUNA LED TECHNOLOGIES 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 ORLUNA LED TECHNOLOGIES Ltd filed Critical ORLUNA LED TECHNOLOGIES Ltd
Priority to GB201217878A priority Critical patent/GB2495009B/en
Publication of GB201217878D0 publication Critical patent/GB201217878D0/en
Publication of GB2495009A publication Critical patent/GB2495009A/en
Application granted granted Critical
Publication of GB2495009B publication Critical patent/GB2495009B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation

Landscapes

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

Abstract

A fire containment mechanism for a downlighter 3 comprises a steel plate 1 which has a larger footprint than an opening which is adapted to receive the downlighter in an installed state. The plate 1 engages a portion of the body of the downlighter 3 that is received by the opening in the installed state.

Description

Fire containment mechanism The present disclosure relates to a fire containment mechanism. More particularly, it relates to a fire containment mechanism for a downlighter.
Downlighters have become increasingly popular in recent years as a means for lighting both domestic and commercial properties. Such downlighters are frequently found mounted in openings/recesses in ceilings. Since an opening in a ceiling must be provided for mounting a downlighter therein, there can be a problem with the spread of fire. A common solution to the problem is to provide downlighters with a gasket of intumescent material, which expands when it is heated to close off any path through the opening and thereby block the passage of fire through the opening.
This is an adequate solution when the downlighters comprise hoods/bezels that are formed from a high melting point material, such as steel. However, it is desirable to provide downlighters with bezels formed from lower melting point materials, such as aluminium, to provide a desired aesthetic. Here the intumescent materials are not useful, since the downlighter bezel can melt causing the downlighter to drop through the opening in the ceiling and leaving a large opening that the intumescent material cannot fill.
The present invention arose in a bid to provide a solution to this problem.
According to the present invention in a first aspect, there is provided a fire containment mechanism for a downlighter comprising a plate which has a larger footprint than an opening which is adapted to receive the downlighter in an installed state, wherein the plate is arranged to engage a portion of the body of the downlighter that is received by the opening in the installed state.
Since the plate engages a portion of the body of the downlighter that is received by the opening in the installed state, the plate is fully received by the opening in the installed state. Should the bezel of the downlighter, which engages the opening melt during a fire then the downlighter will drop down through the opening. However, the opening will be blocked by the plate, which will engage the rear of the surface in which the opening is provided, by virtue of its larger footprint than the opening. The plate will thereby block the opening and prevent the passage of fire therethrough.
The present invention provides a unique and highly cost effective solution.
Further, preferred features, are provided in the dependent claims.
Non-limiting embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure la shows a plate in accordance with a first embodiment of the present invention in plan view; Figure lb shows the plate of Figure la in side view; Figure lc shows the plate of Figure la in end view; Figure 2a shows the installation of the plate of Figure la to a downlighter in plan view; Figure 2b shows the installation of the plate of Figure la to a downlighter in end view; Figure 3a shows the plate of Figure la in an installed state in plan view; and Figure 3b shows the plate of Figure la in an installed state in perspective view.
With reference to the figures, there is shown a fire containment mechanism for a downlighter according to the present invention in a first embodiment.
The fire containment mechanism comprises a plate 1. The plate is substantially planar and is substantially oval. It should be appreciated that the plate needs not be oval but may take other forms.
The plate is provided with a slot 2, which allows for engagement of the plate with a downlighter 3. The shape of the slot may be adapted as necessary to suit the downlighter to which it is attached. The plate is of unitary construction and is formed from a high melting point material. The plate is preferably formed from steel.
The plate is arranged to be engaged with a downlighter by engaging the downlighter with the slot. The plate is additionally arranged to be bent out of plane along a longitudinal centerline, as seen is Figures lb and It.
Installation of the plate with a downlighter is shown in Figures 2a and 2b. The downlighter with which the plate is adapted to be used is provided with a heatsink that forms part of the body of the downlighter. The heatsink comprises a plurality of spaced parallel fins 4. The fins are joined by a central ribS. The slot of the plate receives the central rib of the heatsink in an installed state. The plate is received between a pair of adjacent fins, as seen clearly in Figures 2b and 3b. With the plate bent out of plane as shown, such that it has a substantial V-shape in end view, the plate is wedged between a pair of adjacent fins with an interference fit. No further fixing means are required.
The plate, as discussed, has a greater footprint than an opening in which the downlighter is installed. In the installed state as shown in Figure 3b, a bezel of the downlighter 6, which is made of a lower melting point material than the plate, engages a surface in which the downlighter is installed (such as a ceiling). The plate lies within the opening, at a level above the surface engaged by the bezel, and substantially parallel to the surface. In the event of a fire and the melting of the bezel, the downlighter drops down through the opening in the surface. The plate, by virtue of its larger footprint, will not pass through the opening. The plate thus blocks the opening and prevents the passage of fire through the opening.

Claims (1)

  1. <claim-text>Claims 1. A fire containment mechanism for a downlighter comprising a plate which has a larger footprint than an opening which is adapted to receive the downlighter in an installed state, wherein the plate is arranged to engage a portion of the body of the downlighter that is received by the opening in the installed state.</claim-text> <claim-text>2. A fire containment mechanism as claimed in Claim 1, wherein the plate is substantially planar and the plane of the plate lies substantially parallel to a surface in which the opening is provided, in the installed state.</claim-text> <claim-text>3. A fire containment mechanism as claimed in Claim 1 or 2, wherein the plate is manufactured from a high melting point material.</claim-text> <claim-text>4. A fire containment mechanism as claimed in any preceding claim, wherein the plate is steel.</claim-text> <claim-text>S. A fire containment mechanism as claimed in any preceding claim, wherein the plate is of unitary construction.</claim-text> <claim-text>6. A fire containment mechanism as claimed in any preceding claim, wherein the plate is substantially oval in shape.</claim-text> <claim-text>7. A fire containment mechanism as claimed in any preceding claim, wherein the plate is provided with a slit which extends to an edge of the plate and which is arranged to receive a portion of the body of the downlighter therein.</claim-text> <claim-text>8. A fire containment mechanism as claimed in any preceding claim, wherein the plate is arranged to be attached to the body of the downlighter by an interference fit.</claim-text> <claim-text>9. A fire containment mechanism as claimed in any preceding claim, wherein the plate is arranged to be engaged with the body of the downlighter by bending the plate out of its plane.</claim-text> <claim-text>10. A fire containment mechanism as claimed in any preceding claim, wherein the downlighter comprises a heatsink, which is received by the opening in an installed state, the heatsink comprising a plurality of fins and the plate being adapted to be retained in engagement with the heatsink by engagement between adjacent fins of the heatsink.</claim-text> <claim-text>11. A fire containment mechanism substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawings.</claim-text>
GB201217878A 2012-10-05 2012-10-05 Fire containment mechanism Expired - Fee Related GB2495009B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201217878A GB2495009B (en) 2012-10-05 2012-10-05 Fire containment mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201217878A GB2495009B (en) 2012-10-05 2012-10-05 Fire containment mechanism

Publications (3)

Publication Number Publication Date
GB201217878D0 GB201217878D0 (en) 2012-11-21
GB2495009A true GB2495009A (en) 2013-03-27
GB2495009B GB2495009B (en) 2013-08-07

Family

ID=47294334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201217878A Expired - Fee Related GB2495009B (en) 2012-10-05 2012-10-05 Fire containment mechanism

Country Status (1)

Country Link
GB (1) GB2495009B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016082026A1 (en) * 2014-11-26 2016-06-02 Jammbco Holdings Ltd Downlight firestop
US9803845B2 (en) 2014-11-26 2017-10-31 Ursatech Ltd. Downlight firestop
US9853267B2 (en) 2014-02-03 2017-12-26 Ursatech Ltd. Intumescent battery housing
US10704751B2 (en) 2014-11-26 2020-07-07 Ursatech Ltd. Downlight firestop
US11794043B2 (en) 2019-12-10 2023-10-24 Ursatech Ltd. Ceiling fixture firestop

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412425A (en) * 2004-03-26 2005-09-28 Douglas Mccandlish Downlight Support Bracket
GB2463796A (en) * 2008-09-29 2010-03-31 Robert Cole Light fitting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412425A (en) * 2004-03-26 2005-09-28 Douglas Mccandlish Downlight Support Bracket
GB2463796A (en) * 2008-09-29 2010-03-31 Robert Cole Light fitting

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9853267B2 (en) 2014-02-03 2017-12-26 Ursatech Ltd. Intumescent battery housing
US10593921B2 (en) 2014-02-03 2020-03-17 Ursatech Ltd. Intumescent battery housing
WO2016082026A1 (en) * 2014-11-26 2016-06-02 Jammbco Holdings Ltd Downlight firestop
US9797563B2 (en) 2014-11-26 2017-10-24 Ursatech Ltd. Downlight firestop
US9803845B2 (en) 2014-11-26 2017-10-31 Ursatech Ltd. Downlight firestop
US10551016B2 (en) 2014-11-26 2020-02-04 Ursatech Ltd. Downlight firestop
US10704751B2 (en) 2014-11-26 2020-07-07 Ursatech Ltd. Downlight firestop
US11408570B2 (en) 2014-11-26 2022-08-09 Ursatech Ltd. Downlight firestop
US11794043B2 (en) 2019-12-10 2023-10-24 Ursatech Ltd. Ceiling fixture firestop

Also Published As

Publication number Publication date
GB201217878D0 (en) 2012-11-21
GB2495009B (en) 2013-08-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20141009 AND 20141015

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20191005