WO2012023861A1 - A protection device for electrical fittings and buildings - Google Patents

A protection device for electrical fittings and buildings Download PDF

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Publication number
WO2012023861A1
WO2012023861A1 PCT/NZ2011/000158 NZ2011000158W WO2012023861A1 WO 2012023861 A1 WO2012023861 A1 WO 2012023861A1 NZ 2011000158 W NZ2011000158 W NZ 2011000158W WO 2012023861 A1 WO2012023861 A1 WO 2012023861A1
Authority
WO
WIPO (PCT)
Prior art keywords
protection device
hollow base
cover assembly
actuator
cap
Prior art date
Application number
PCT/NZ2011/000158
Other languages
French (fr)
Inventor
Paul Alfred Hill
Anthony Ronald Sandes
Original Assignee
Forefront Solutions Limited
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 Forefront Solutions Limited filed Critical Forefront Solutions Limited
Priority to AU2011292506A priority Critical patent/AU2011292506B2/en
Publication of WO2012023861A1 publication Critical patent/WO2012023861A1/en

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
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • 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
    • 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
    • F21V29/50—Cooling arrangements
    • 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
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0064—Health, life-saving or fire-fighting equipment
    • F21V33/0076—Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices

Definitions

  • the invention relates to a protection device for electrical fittings and buildings such as wall or ceiling light fittings from overheating when the fittings are in close proximity to building materials and to manage airflow through such fittings.
  • down lights In present, particularly in New Zealand, there is a move to use, in new buildings and when doing improvements to existing buildings, what are colloquially known as down lights. These lights are also known as recessed lights (also pot lights in Canadian English, sometimes can lights [for canister light] in American English). These are a light fixture that is installed into a hollow opening in a ceiling or wall. When installed they appear to have light shining from a hole in the ceiling or wall, concentrating the light in a downward or outward direction as a broad floodlight or narrow spotlight.
  • the trim is the visible portion of the light fitting. It is the insert that is seen when looking up into the fixture, and Jthis includes the thin lining around the edge of the light.
  • the housing is the fixture itself that is installed inside the ceiling or wall and contains a lamp holder.
  • a particular problem with such fittings is that in order to meet current insulation standards for at least modern buildings insulation is placed in close proximity to the lamp fittings and in certain circumstances this can result in a fire hazard because of a build up of heat created by the lamp. In many situations this is not a problem but with some flammable and loosely installed fibre insulations a fire hazard can be created. This has of recent time resulted in expensive house fire insurance claims. In order to minimize the risk of such a fire it is common to leave a space around such fittings and a consequence of this is that heat is lost because of the lack of roof or wall insulation. A further problem with down lights in ceiling situations is the chimney effect created by the housing of the down light.
  • the housing which is generally columnar acts as a chimney resulting in heat loss from within the space in which the down light is fitted.
  • An object of the present invention is to provide a device which allows for the abutment of insulation materials while preventing surface area heat loss, covering of the fitting to prevent heat loss through the chimney effect and the inclusion of a heat activated valve to prevent overheating of the interior of the device.
  • a further object of the invention is to overcome the above identified problems and to provide a protection device for electrical fittings and buildings in which they are installed which at least offers consumers a useful alternative choice.
  • a protection device for electrical fittings and buildings in which they are installed including a cover assembly and hollow base, the cover assembly or hollow base including a ventilation actuator.
  • the hollow base can be the shape of a truncated cone which is circular in plan. It is to be appreciated that in plan the shape can be square, rectangular or any other suitable polygon shape.
  • the cover assembly and/or the hollow base can be manufactured from any suitable fire resistant material or materials such as gypsum which may or may not be fibre reinforced or fire retardant polypropylene.
  • the cover assembly includes a chassis and cap constructed from a fire retardant material for example fire resistant polyester or the like material.
  • the cover assembly incorporates a ventilation actuator which is adapted to open a vent in the assembly to release any build up of heat within the interior of the hollow base above a predetermined or set temperature.
  • the ventilation actuator can be activated by a suitable temperature sensitive means such as a bi-metallic strip or heat / thermally sensitive material such as blends of hydrocarbons.
  • a suitable temperature sensitive means such as a bi-metallic strip or heat / thermally sensitive material such as blends of hydrocarbons.
  • the heat sensitive material is paraffin wax which material when heated expands to activate the ventilation actuator.
  • a protection device for electrical fittings as in the first aspect in which the device is placed over a down light or other electrical installation before roof, ceiling or wall insulation materials are laid to abut the periphery of the device.
  • Figure 1 is a side view of an example of device according to the invention.
  • Figure 2 is a plan view of the device shown in Figure 1 ;
  • Figure 3 is a view from below of the device shown in Figures 1 and 2;
  • Figure 4 is a vertical section through the device shown in Figures 1 to
  • Figure 5 is a side view of a cover assembly of the device shown in Figures 1 to 4;
  • Figure 6 is an isometric view from below of the cover assembly shown in Figure 5;
  • Figure 7 is a side view of a cap of the cover assembly shown in Figures 5 and 6;
  • Figure 8 is an isometric view from below of the cap shown in Figure 7;
  • Figure 9 is an isometric view from above of a chassis section of the cover assembly shown in Figures 3, 4, 5 and 6;
  • Figure 10 is an isometric view from below of the chassis section shown in Figure 9;
  • FIG 11 is a side view of the chassis section shown in Figures 9 and 10;
  • Figure 12 is an isometric view from above of a ventilation actuator for the device shown in Figures 1 to 6;
  • Figure 13 is a side view of the ventilation actuator shown in Figure 12;
  • Figure 14 is a perspective view from above of the device shown in Figures 1 to 4 shown fitted in a ceiling space.
  • FIGs 1 to 4 and 14 is shown an example of device according to the invention which is shaped to cover a down light fitting. It is to be appreciated, although it is not shown in the drawings, that the device and a down light fitting can be manufactured as one unit.
  • the device consists of a hollow base 1 and cover assembly 2.
  • the base 1 shown in Figures 1 to 4 is the shape of a truncated cone which is generally circular in plan.
  • the base 1 has at least one edge at its bottom formed with a straight edge section 3.
  • two straight edge sections 3 are formed which are at right angles to each other so that in use as shown in Figure 14 the hollow base 1 can be sited at the join between two ceiling joists or studs as the case may be.
  • the base 1 can also include a ledge 4 and a series of anchoring feet 5. It is to be appreciated that in plan the shape of the hollow base can be square, rectangular or any other suitable polygon shape if required.
  • the base 1 can be manufactured from any suitable material such as gypsum which may or may not be fibre reinforced or from a fire retardant plastics material such as polypropylene.
  • cover assembly 2 shown in the drawings is advantageously injection moulded in parts from a fire resistant plastics material reinforced by glass fibres such as glass filled polyester.
  • the cover assembly 2. in the example is manufactured from a number of parts which will be described in detail below with reference to Figures 4 and 5 to 12.
  • the cover assembly 2 includes a chassis section 6 shown in detail in Figures 9 to 11 and a cap 7 shown in detail in Figures 7 and 8.
  • the chassis section 6 is ring shaped and includes a central column 8 supported by radial ribs 10.
  • the upper end of the column 8 forms a seat 9.
  • three radial ribs 10 each of which includes a sleeve 11. It is to be appreciated that more ribs may be included if addition strength is required.
  • the chassis 6 includes a downwardly extending skirt 12 which in use allows for fitment of the chassis 6 into a hole 13 ( Figure 4) in the top of the hollow base 1.
  • the cap 7 (detailed in Figures 7 and 8) includes a plurality of downwardly extending vanes 14, a series of spring legs 15 and a centrally positioned riser 16.
  • the number of spring legs 15 in practice is the same as the number of sleeves 11 in the chassis 6.
  • the cover assembly 2 in the example includes a thermal actuator 17 (shown in detail in Figures 12 and 13.
  • the thermal actuator 17 includes a bore 18 for receiving the riser 16 of the cap 7.
  • the thermal actuator 17 includes within its body a diaphragm which is thermally activated to move the riser 16 relative to the actuator 17 to raise the cap 7 so that the vanes 14 are exposed so that there is an air gap through which air within the hollow base can escape to above the cap when the air is heated to above a predetermined temperature.
  • the ventilation actuator 17 can be activated by a suitable temperature sensitive means such as a bi-metallic strip or heat sensitive material such as an expanding media like a hydrocarbon blend designed to expand and activate the actuator over a particular temperature range such as 25°C to 80°C.
  • a suitable temperature sensitive means such as a bi-metallic strip or heat sensitive material such as an expanding media like a hydrocarbon blend designed to expand and activate the actuator over a particular temperature range such as 25°C to 80°C.
  • the ventilation actuator 17 incorporates desired protection features including the following:
  • An audible alarm for example a bimetallic clicker which operates in the event of a failure of the ventilation actuator.
  • the cover assembly 2 sits in an opening 13 ( Figure 4) at the top of the hollow base 1.
  • the opening is closed in use by the cover assembly 2 which is friction fitted but can be removed to access the down light for installation or maintenance.
  • the cover assembly 2 of the device is assembled (to the condition shown in Figures 5 and 6) by fitting the thermal actuator 17 to the chassis 6 using a circlip (not shown) which fits in recess 19 ( Figure 13) and contacts the seat 9 of the centre column 8.
  • the cap 7 is then fitted with its legs 15 extending through the sleeves 11 in the ribs 10 and with its riser 16 extending into the bore 18 at the top of the thermal actuator 17.
  • the chassis 6 and cap 7 are held together after springs 20 are placed on legs 15 by star clips 21.
  • the device In use the device is, as shown in Figure 14, placed over a down light (not visible) and adjacent roof framing 22 with ceiling insulation material 23 laid to abut the periphery of the base 1 and over the framing 22 to minimise heat lose from within the room in which the down light is fitted.
  • the ledge 4 is provided to indicate the appropriate height level for the insulation 23.
  • the cap 7 in Figure 14 is shown in its raised position thereby releasing a build up of heat from within the hollow base 1.
  • the device can include (not shown) a support on the outer periphery of the hollow base for a cable tie or the like for supporting a transformer or other auxiliary equipment.
  • the ventilation actuator 17 operates to periodically open the vent to release the heat build until the actuator closes the vent.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

A method for protecting a building by use of a protection device for electrical fittings. The protection device includes a cover assembly and hollow base which includes a ventilation actuator. The protection device is placed over a down light or other electrical installation before roof, ceiling or wall insulation materials are laid to abut the periphery of the protection device.

Description

A Protection Device for Electrical Fittings and Buildings Technical Field The invention relates to a protection device for electrical fittings and buildings such as wall or ceiling light fittings from overheating when the fittings are in close proximity to building materials and to manage airflow through such fittings. Background Art
At present, particularly in New Zealand, there is a move to use, in new buildings and when doing improvements to existing buildings, what are colloquially known as down lights. These lights are also known as recessed lights (also pot lights in Canadian English, sometimes can lights [for canister light] in American English). These are a light fixture that is installed into a hollow opening in a ceiling or wall. When installed they appear to have light shining from a hole in the ceiling or wall, concentrating the light in a downward or outward direction as a broad floodlight or narrow spotlight.
There are two parts to recessed or down lights, the trim and housing. The trim is the visible portion of the light fitting. It is the insert that is seen when looking up into the fixture, and Jthis includes the thin lining around the edge of the light. The housing is the fixture itself that is installed inside the ceiling or wall and contains a lamp holder.
A particular problem with such fittings is that in order to meet current insulation standards for at least modern buildings insulation is placed in close proximity to the lamp fittings and in certain circumstances this can result in a fire hazard because of a build up of heat created by the lamp. In many situations this is not a problem but with some flammable and loosely installed fibre insulations a fire hazard can be created. This has of recent time resulted in expensive house fire insurance claims. In order to minimize the risk of such a fire it is common to leave a space around such fittings and a consequence of this is that heat is lost because of the lack of roof or wall insulation. A further problem with down lights in ceiling situations is the chimney effect created by the housing of the down light. The housing which is generally columnar acts as a chimney resulting in heat loss from within the space in which the down light is fitted. An object of the present invention is to provide a device which allows for the abutment of insulation materials while preventing surface area heat loss, covering of the fitting to prevent heat loss through the chimney effect and the inclusion of a heat activated valve to prevent overheating of the interior of the device. A further object of the invention is to overcome the above identified problems and to provide a protection device for electrical fittings and buildings in which they are installed which at least offers consumers a useful alternative choice.
Further objects and advantages of the invention will become apparent from the following description which is given by way of example only.
Summary of the Invention
According to a first aspect of the invention there is provided a protection device for electrical fittings and buildings in which they are installed, the device including a cover assembly and hollow base, the cover assembly or hollow base including a ventilation actuator.
The hollow base can be the shape of a truncated cone which is circular in plan. It is to be appreciated that in plan the shape can be square, rectangular or any other suitable polygon shape.
The cover assembly and/or the hollow base can be manufactured from any suitable fire resistant material or materials such as gypsum which may or may not be fibre reinforced or fire retardant polypropylene. The cover assembly includes a chassis and cap constructed from a fire retardant material for example fire resistant polyester or the like material.
The cover assembly incorporates a ventilation actuator which is adapted to open a vent in the assembly to release any build up of heat within the interior of the hollow base above a predetermined or set temperature.
The ventilation actuator can be activated by a suitable temperature sensitive means such as a bi-metallic strip or heat / thermally sensitive material such as blends of hydrocarbons. Preferably the heat sensitive material is paraffin wax which material when heated expands to activate the ventilation actuator.
According to a second aspect of the invention there is provided a method of protecting a building by using a protection device for electrical fittings as in the first aspect in which the device is placed over a down light or other electrical installation before roof, ceiling or wall insulation materials are laid to abut the periphery of the device.
Further aspects of the invention which should be considered in all its novel aspects will become apparent from the following description which is given by way of example only.
Description of the Drawings An example of the invention will now be described with reference to the accompanying drawings in which:
Figure 1 is a side view of an example of device according to the invention;
Figure 2 is a plan view of the device shown in Figure 1 ;
Figure 3 is a view from below of the device shown in Figures 1 and 2;
Figure 4 is a vertical section through the device shown in Figures 1 to
3;
Figure 5 is a side view of a cover assembly of the device shown in Figures 1 to 4; Figure 6 is an isometric view from below of the cover assembly shown in Figure 5;
Figure 7 is a side view of a cap of the cover assembly shown in Figures 5 and 6;
Figure 8 is an isometric view from below of the cap shown in Figure 7; Figure 9 is an isometric view from above of a chassis section of the cover assembly shown in Figures 3, 4, 5 and 6;
Figure 10 is an isometric view from below of the chassis section shown in Figure 9;
Figure 11 is a side view of the chassis section shown in Figures 9 and 10;
Figure 12 is an isometric view from above of a ventilation actuator for the device shown in Figures 1 to 6;
Figure 13 is a side view of the ventilation actuator shown in Figure 12; and
Figure 14 is a perspective view from above of the device shown in Figures 1 to 4 shown fitted in a ceiling space.
Description of the Example
An example of the invention will now be described with reference to a device designed to protect a down light fitting. It is to be appreciated that the device can be used to protect other electrical fittings from overheating and therefore reduce the risk of a fire hazard.
In the following description of the example with reference to the drawings similar integers will be referred to using the same reference numbers in the different figures.
In Figures 1 to 4 and 14 is shown an example of device according to the invention which is shaped to cover a down light fitting. It is to be appreciated, although it is not shown in the drawings, that the device and a down light fitting can be manufactured as one unit. The device consists of a hollow base 1 and cover assembly 2. The base 1 shown in Figures 1 to 4 is the shape of a truncated cone which is generally circular in plan. The base 1 has at least one edge at its bottom formed with a straight edge section 3. In the example two straight edge sections 3 are formed which are at right angles to each other so that in use as shown in Figure 14 the hollow base 1 can be sited at the join between two ceiling joists or studs as the case may be. The base 1 can also include a ledge 4 and a series of anchoring feet 5. It is to be appreciated that in plan the shape of the hollow base can be square, rectangular or any other suitable polygon shape if required.
The base 1 can be manufactured from any suitable material such as gypsum which may or may not be fibre reinforced or from a fire retardant plastics material such as polypropylene.
The example of cover assembly 2 shown in the drawings is advantageously injection moulded in parts from a fire resistant plastics material reinforced by glass fibres such as glass filled polyester. The cover assembly 2. in the example is manufactured from a number of parts which will be described in detail below with reference to Figures 4 and 5 to 12.
The cover assembly 2 includes a chassis section 6 shown in detail in Figures 9 to 11 and a cap 7 shown in detail in Figures 7 and 8. The chassis section 6 is ring shaped and includes a central column 8 supported by radial ribs 10. The upper end of the column 8 forms a seat 9. In the example there are shown three radial ribs 10 each of which includes a sleeve 11. It is to be appreciated that more ribs may be included if addition strength is required. The chassis 6 includes a downwardly extending skirt 12 which in use allows for fitment of the chassis 6 into a hole 13 (Figure 4) in the top of the hollow base 1.
The cap 7 (detailed in Figures 7 and 8) includes a plurality of downwardly extending vanes 14, a series of spring legs 15 and a centrally positioned riser 16. The number of spring legs 15 in practice is the same as the number of sleeves 11 in the chassis 6.
The cover assembly 2 in the example includes a thermal actuator 17 (shown in detail in Figures 12 and 13. The thermal actuator 17 includes a bore 18 for receiving the riser 16 of the cap 7.
The thermal actuator 17 includes within its body a diaphragm which is thermally activated to move the riser 16 relative to the actuator 17 to raise the cap 7 so that the vanes 14 are exposed so that there is an air gap through which air within the hollow base can escape to above the cap when the air is heated to above a predetermined temperature.
The ventilation actuator 17 can be activated by a suitable temperature sensitive means such as a bi-metallic strip or heat sensitive material such as an expanding media like a hydrocarbon blend designed to expand and activate the actuator over a particular temperature range such as 25°C to 80°C. The ventilation actuator 17 incorporates desired protection features including the following:
1. A sealed unit for the expanding media;
2. An audible alarm (not shown) for example a bimetallic clicker which operates in the event of a failure of the ventilation actuator.
The cover assembly 2 sits in an opening 13 (Figure 4) at the top of the hollow base 1. The opening is closed in use by the cover assembly 2 which is friction fitted but can be removed to access the down light for installation or maintenance.
In use the cover assembly 2 of the device is assembled (to the condition shown in Figures 5 and 6) by fitting the thermal actuator 17 to the chassis 6 using a circlip (not shown) which fits in recess 19 (Figure 13) and contacts the seat 9 of the centre column 8. The cap 7 is then fitted with its legs 15 extending through the sleeves 11 in the ribs 10 and with its riser 16 extending into the bore 18 at the top of the thermal actuator 17. The chassis 6 and cap 7 are held together after springs 20 are placed on legs 15 by star clips 21. In use the device is, as shown in Figure 14, placed over a down light (not visible) and adjacent roof framing 22 with ceiling insulation material 23 laid to abut the periphery of the base 1 and over the framing 22 to minimise heat lose from within the room in which the down light is fitted. The ledge 4 is provided to indicate the appropriate height level for the insulation 23. The cap 7 in Figure 14 is shown in its raised position thereby releasing a build up of heat from within the hollow base 1.
The device can include (not shown) a support on the outer periphery of the hollow base for a cable tie or the like for supporting a transformer or other auxiliary equipment.
In the event of a heat build up within the device the ventilation actuator 17 operates to periodically open the vent to release the heat build until the actuator closes the vent.
Where in the foregoing description particular mechanical integers are described it is envisaged that their mechanical equivalents can be substituted as if they were described. Thus by this invention there is provided a protection device for electrical fittings and buildings such as wall or ceiling lights from overheating when the fittings are in close proximity to insulation materials.
A particular example of the invention has been described and it is envisaged that improvements and modifications can take place without departing from the scope thereof.

Claims

A protection device for electrical fittings and buildings in which they are installed, the device including a cover assembly and hollow base, the cover assembly or hollow base including a ventilation actuator.
A protection device as claimed in claim 1 wherein the hollow base is generally the shape of a truncated cone which is circular in plan.
A protection device as claimed in claim 2 wherein at least one edge of a bottom of the hollow base has a straight edge section.
A protection device as claimed in claim 3 wherein the hollow base has two straight edge sections at right angles to each other.
A protection device as claimed in any one of the preceding claims in which the hollow base includes a series of anchoring feet.
A protection device as claimed in claim 2 wherein the hollow base is square, rectangular or any other suitable polygon shape in plan.
A protection device as claimed in any one of the preceding claims wherein the cover assembly and/or the hollow base is manufactured from a fire resistant material.
A protection device as claimed in claim 6 wherein the fire resistant material is gypsum which is optionally fibre reinforced.
A protection device as claimed in claim 7 wherein the cover assembly includes a chassis section and a cap.
A protection device as claimed in claim 9 wherein the chassis section and cap are manufactured from a fire resistant plastics material.
11. A protection device as claimed in claim 10 wherein the fire resistant plastics material is reinforced by glass fibres.
12. A protection device as claimed in claim 11 wherein the plastics material is a glass filled polyester.
13. A protection device as claimed in any one of the preceding claims wherein the cover assembly incorporates the ventilation actuator.
14. A protection device as claimed in claim 13 wherein the cover member is raised by the ventilation actuator to thereby vent any build up of heat within the interior of the housing.
15. A protection device as claimed in claim 13 or claim 14 wherein the ventilation actuator is adapted to raise the cap relative to the chassis when an air temperature in the hollow base is above a predetermined or set temperature.
16. A protection device as claimed in any one of claims 13 to 15 wherein the ventilation actuator is activated by a suitable temperature sensitive means.
17. A protection device as claimed in claim 16 wherein the temperature sensitive means is a bi-metallic strip or a heat / thermally sensitive material.
18. A protection device as claimed in claim 17 wherein the heat sensitive material is paraffin wax.
19. A protection device substantially as hereinbefore described with reference to the accompanying drawings.
20. A method of protecting a building by using a protection device for electrical fittings as in claim 1 in which the protection device is placed over a down light or other electrical installation before roof, ceiling or wall insulation materials are laid to abut the periphery of the protection device.
A method of protecting a building as claimed in claim 15 and substantially as hereinbefore described with reference to the accompanying drawings.
PCT/NZ2011/000158 2010-08-16 2011-08-16 A protection device for electrical fittings and buildings WO2012023861A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2011292506A AU2011292506B2 (en) 2010-08-16 2011-08-16 A protection device for electrical fittings and buildings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ583979A NZ583979A (en) 2010-08-16 2010-08-16 A fire protection device for light or electrical fittings with heat-actuated ventilation means
NZ583979 2010-08-16

Publications (1)

Publication Number Publication Date
WO2012023861A1 true WO2012023861A1 (en) 2012-02-23

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ID=45605338

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PCT/NZ2011/000158 WO2012023861A1 (en) 2010-08-16 2011-08-16 A protection device for electrical fittings and buildings

Country Status (3)

Country Link
AU (1) AU2011292506B2 (en)
NZ (1) NZ583979A (en)
WO (1) WO2012023861A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1015467A (en) * 1963-05-08 1965-12-31 Schmidt Paul Dust and water-proof light fitting
AU2005202669A1 (en) * 2005-04-13 2006-11-02 Hongzhen Wei Fireproofing cover and intumescent material for heat sink
US20080165535A1 (en) * 2007-01-09 2008-07-10 Mazzochette Joseph B Thermally-Managed Led-Based Recessed Down Lights

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1015467A (en) * 1963-05-08 1965-12-31 Schmidt Paul Dust and water-proof light fitting
AU2005202669A1 (en) * 2005-04-13 2006-11-02 Hongzhen Wei Fireproofing cover and intumescent material for heat sink
US20080165535A1 (en) * 2007-01-09 2008-07-10 Mazzochette Joseph B Thermally-Managed Led-Based Recessed Down Lights

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Publication number Publication date
AU2011292506A1 (en) 2013-04-04
AU2011292506B2 (en) 2015-09-03
NZ583979A (en) 2013-04-26

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