WO1990001201A1 - Warning device - Google Patents

Warning device Download PDF

Info

Publication number
WO1990001201A1
WO1990001201A1 PCT/GB1989/000866 GB8900866W WO9001201A1 WO 1990001201 A1 WO1990001201 A1 WO 1990001201A1 GB 8900866 W GB8900866 W GB 8900866W WO 9001201 A1 WO9001201 A1 WO 9001201A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
base
warning device
ceiling
ceiling rose
Prior art date
Application number
PCT/GB1989/000866
Other languages
French (fr)
Inventor
John Edward Kingston
Original Assignee
John Edward Kingston
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 John Edward Kingston filed Critical John Edward Kingston
Publication of WO1990001201A1 publication Critical patent/WO1990001201A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • This invention relates to warning devices such as include a smoke detection device operably connected to an audible warning device.
  • warning devices are widely available for attachment to a ceiling, but it is a common complaint that they look out of place and do not fit in with the surrounding decor.
  • GB 2 189 634-A proposes a ceiling-mounting device in which the detection device and the alarm are mounted in spaced but connected housings, and a lamp fitting is suspended between them some distance below. Whilst this would totally eliminate the proximity problem the device has not met with commercial success, which may well be because it is still not aesthetically acceptable to the consumer.
  • the present invention proposes a warning device which comprises a housing for direct or indirect attachment to a ceiling, the housing having smoke inlet means and containing a smoke detection device and an audible alarm device operably connected together, the housing having inlet means for electrical supply wiring and an outlet for an electrical cable for supplying electricity to a pendant light fitting which in use is suspended in spaced relationship below the housing via an elongate suspension element, characterised in that the housing is of substantially equal width in two mutually perpendicular directions.
  • the housing is located directly above the lamp fitting and may still be in its air flow, the spacing counters any adverse effect and the efficiency of the detector may even be enhanced, as will be explained below.
  • the housing will norally be substantially circular, although it may also be square for example.
  • Figure 1 is a plan view from below of a warning device of the nvention
  • Figure 2 is a side view of the device
  • Figure 3 is a plan view of a base portion of the device.
  • the device comprises a two-part housing 1 of squat cylindrical shape including a base 2 and a cover 3.
  • the base 2 is of annular shape with a central aperture 4 which allows the base to encircle an existing celing rose, or more often, the base portion of a ceiling rose which remains attached to a ceiling.
  • a pair of fixing holes 6, 7 are provided in the base for attaching the housing directly to the ceiling using screws.
  • the inner periphery of the housing is provided with a screw-thread 8 to engage a complementary formation on the base of the ceiling rose, thus providing an alternative means of attaching the housing to the ceiling.
  • a smoke detection device 10 and an alarm siren 11 are mounted on the base 2 together with their associated electronics.
  • a mains- operated power supply and/or a battery (not shown) are also mounted on the base.
  • the cover 3 (Fig.s 1 and 2) includes a circular top wall 15 and a short cylindrical side wall 16 both of which contain respective ventilation slots 18, 19.
  • the top wall 15 contains a central aperture 23 surrounded by an outwardly extending tubular spigot 24, through which an electrical cable 25 can pass from inside the housing to a pendant lamp fitting (not shown). In the case of a lightwewight fitting this may be suspended by the cable alone, but a heavier fitting may be suspended by a tube which encloses the cable and which is connected by threads to the spigot 24 or by screws to the top wall 15.
  • a test button 26 projects through the top wall 15 enabling the user to test the detector and alarm system.
  • the cover may be secured to the base by complementary screw threads, by fixing screws or by a snap engagement.
  • the cover in use, the cover is removed from the existing ceiling rose and the cable leading to the lamp fitti.ng is disconnected from the rose. If the detector circuit requires a mains supply the appropriate connections can be made to the ceiling rose so that the incoming electricity supply wires do not need to be disturbed.
  • the cable to the lamp fitting is threaded through the aperture 23 and re-connected to the ceiling rose, and the cover 3 is fitted to the base 2.
  • Heat generated by a lamp mounted in the pendant fitting will not adversely affect the operation of the detection device.
  • a gentle air flow may be created by the lamp passing in through the the top apertures 18 and out through the side apertures 19. This may actually enhance the efficiency of the device by drawing smoke through the housing. This applies to both ionisation and optical (photoelectric) detectors.
  • the device need not necessarily be mounted over an existing ceiling rose, in which case the incoming supply wires would simply be fed through the aperture 4.
  • the device may be modified so that no disturbance to an existing ceiling rose and its associated electrical connections is necessary.
  • the base includes an open- ended slot 9 (Fig. 3) leading from the central aperture 4 to the outer periphery of the base, and a similar slot is included in the cover leading from the aperture 23 through the side wall 16.
  • the housing can be fitted over the complete ceiling rose by passing the existing cable through the slots in the base and cover.

Abstract

The device comprises a squat cylindrical housing (1) which includes a base (2) and a cover (3). The base has a central aperture to receive an existing ceiling rose, or the base of one, and may be screw-threaded to engage the base of the ceiling rose. Screw fixing holes are also provided. The cover has smoke inlet apertures (18) in its top wall (15) and outlet apertures in its side wall (16), and includes a central aperture (23) for an electrical cable (25) for feeding a pendant light fitting which is suspended some distance below the housing (1).

Description

WARNING DEVICE
TECHNICAL FIELD OF THE INVENTION
This invention relates to warning devices such as include a smoke detection device operably connected to an audible warning device.
BACKGROUND ART
Such warning devices are widely available for attachment to a ceiling, but it is a common complaint that they look out of place and do not fit in with the surrounding decor.
It has been proposed to incorporate such a device in a ceiling-mounting lamp fitting (see US 4 090 178, GB 2 008 871-A and US 4 717 910) but the close proximity of the lamp to the detection device and any associated electronics can give rise to problems. Intense heat from the lamp may affect the sensitivity of the detection device and may also adversely affect the electronics. Thus, such devices have not found favour in many countries.
GB 2 189 634-A proposes a ceiling-mounting device in which the detection device and the alarm are mounted in spaced but connected housings, and a lamp fitting is suspended between them some distance below. Whilst this would totally eliminate the proximity problem the device has not met with commercial success, which may well be because it is still not aesthetically acceptable to the consumer.
SUMMARY OF THE INVENTION
The present invention proposes a warning device which comprises a housing for direct or indirect attachment to a ceiling, the housing having smoke inlet means and containing a smoke detection device and an audible alarm device operably connected together, the housing having inlet means for electrical supply wiring and an outlet for an electrical cable for supplying electricity to a pendant light fitting which in use is suspended in spaced relationship below the housing via an elongate suspension element, characterised in that the housing is of substantially equal width in two mutually perpendicular directions.
Although the housing is located directly above the lamp fitting and may still be in its air flow, the spacing counters any adverse effect and the efficiency of the detector may even be enhanced, as will be explained below.
The housing will norally be substantially circular, although it may also be square for example.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is exemplified in the accompanying drawings, in which:
Figure 1 is a plan view from below of a warning device of the nvention,
Figure 2 is a side view of the device, and
Figure 3 is a plan view of a base portion of the device.
DETAILED DESCRIPTION OF THE DRAWINGS
The device comprises a two-part housing 1 of squat cylindrical shape including a base 2 and a cover 3.
As shown in Fig. 3, the base 2 is of annular shape with a central aperture 4 which allows the base to encircle an existing celing rose, or more often, the base portion of a ceiling rose which remains attached to a ceiling. A pair of fixing holes 6, 7 are provided in the base for attaching the housing directly to the ceiling using screws. The inner periphery of the housing is provided with a screw-thread 8 to engage a complementary formation on the base of the ceiling rose, thus providing an alternative means of attaching the housing to the ceiling. A smoke detection device 10 and an alarm siren 11 are mounted on the base 2 together with their associated electronics. A mains- operated power supply and/or a battery (not shown) are also mounted on the base.
The cover 3 (Fig.s 1 and 2) includes a circular top wall 15 and a short cylindrical side wall 16 both of which contain respective ventilation slots 18, 19. The top wall 15 contains a central aperture 23 surrounded by an outwardly extending tubular spigot 24, through which an electrical cable 25 can pass from inside the housing to a pendant lamp fitting (not shown). In the case of a lightwewight fitting this may be suspended by the cable alone, but a heavier fitting may be suspended by a tube which encloses the cable and which is connected by threads to the spigot 24 or by screws to the top wall 15. A test button 26 projects through the top wall 15 enabling the user to test the detector and alarm system.
The cover may be secured to the base by complementary screw threads, by fixing screws or by a snap engagement.
in use, the cover is removed from the existing ceiling rose and the cable leading to the lamp fitti.ng is disconnected from the rose. If the detector circuit requires a mains supply the appropriate connections can be made to the ceiling rose so that the incoming electricity supply wires do not need to be disturbed. The cable to the lamp fitting is threaded through the aperture 23 and re-connected to the ceiling rose, and the cover 3 is fitted to the base 2.
Heat generated by a lamp mounted in the pendant fitting will not adversely affect the operation of the detection device. In fact, a gentle air flow may be created by the lamp passing in through the the top apertures 18 and out through the side apertures 19. This may actually enhance the efficiency of the device by drawing smoke through the housing. This applies to both ionisation and optical (photoelectric) detectors.
The device need not necessarily be mounted over an existing ceiling rose, in which case the incoming supply wires would simply be fed through the aperture 4.
The device may be modified so that no disturbance to an existing ceiling rose and its associated electrical connections is necessary. The base includes an open- ended slot 9 (Fig. 3) leading from the central aperture 4 to the outer periphery of the base, and a similar slot is included in the cover leading from the aperture 23 through the side wall 16. Thus, the housing can be fitted over the complete ceiling rose by passing the existing cable through the slots in the base and cover.

Claims

1. A warning device which comprises a housing
(I) for direct or indirect attachment to a ceiling, the housing having smoke inlet means (18) and containing a smoke detection device (10) and an audible alarm device
(II) operably connected together, the housing having inlet means (4) for electrical supply wiring and an outlet (23) for an electrical cable (25) for supplying electricity to a pendant light fitting which in use is suspended in spaced relationship below the housing via an elongate suspension element, characterised in that the housing (1) is of substantially equal width in two mutually perpendicular di rections.
2. A warning device according to Claim 1, in which the housing (1) is substantially circular.
3. A warning device according to Claim 1, in which the housing (1) includes a base (2) and a cover (3), the base including an aperture (4) for receiving an existing ceiling rose, or the base portion of an exisiting ceiling rose, so that the ceiling rose or base thereof is contained within the housing in use.
4. A warning device according to Claim 3, in which the aperture (4) is screw threaded (8) to engage a thread on the base of an existing ceiling rose.
5. A warning device according to Claim 3, in which the housing (1) includes an open-ended slot leading from the inlet means (4) and the outlet (23) to the periphery of the housing.
6. A housing according to Claim 1, in which the top wall (15) of the housing (1) contains smoke inlet apertures (18) and side wall (16) of the housing contains smoke outlet apertures (19).
PCT/GB1989/000866 1988-07-28 1989-07-28 Warning device WO1990001201A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8817974.2 1988-07-28
GB8817974A GB2221331A (en) 1988-07-28 1988-07-28 Smoke detector

Publications (1)

Publication Number Publication Date
WO1990001201A1 true WO1990001201A1 (en) 1990-02-08

Family

ID=10641253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/000866 WO1990001201A1 (en) 1988-07-28 1989-07-28 Warning device

Country Status (3)

Country Link
AU (1) AU4059589A (en)
GB (1) GB2221331A (en)
WO (1) WO1990001201A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7109874B2 (en) 2001-03-14 2006-09-19 Acbond Limited Smoke detectors
EP2801959A1 (en) * 2009-10-05 2014-11-12 Cavius APS Smoke alarm

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9211770D0 (en) * 1992-06-03 1992-07-15 Oliver Ian P Lighting apparatus
GB2290900A (en) * 1994-06-20 1996-01-10 Timothy James Shepherd Lighting smoke alarm
GB2330015A (en) * 1997-06-21 1999-04-07 Howard St John Milton Decorative cover for ceiling rose
SE512409C2 (en) * 1997-12-11 2000-03-13 Rickard Groenstedt Suspension for fire alarms
GB2337841A (en) * 1998-05-28 1999-12-01 Mark Henry Herrington Combined light bulb fitting and smoke alarm
GB2371666A (en) * 2001-01-25 2002-07-31 James Turner Fire alarm and light fitting
AU2002953417A0 (en) * 2002-12-18 2003-01-09 Gerard Industries Pty Ltd Detector assembly suited to smoke alarms

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
US4199754A (en) * 1977-11-21 1980-04-22 Esb Incorporated Circuit for an emergency lighting and fire detector system
US4255746A (en) * 1977-11-21 1981-03-10 Esb Inc. Emergency lighting and fire detector system
US4529976A (en) * 1982-10-29 1985-07-16 Frederick M. Jameson Smoke detector with masking shield
EP0166259A2 (en) * 1984-05-30 1986-01-02 Franz Mahlmeister Fire, smoke, gas or intrusion alarm giver for use in dwellings or industrial premises
US4694285A (en) * 1985-11-12 1987-09-15 Scripps Keith A Combination electrical light, smoke and/or heat detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849581A1 (en) * 1977-11-21 1979-07-05 Esb Int Corp SECURITY SYSTEM TO BE USED IN CONJUNCTION WITH A PRIMARY ELECTRICITY SOURCE
US4694281A (en) * 1982-09-16 1987-09-15 Mcdermott Julian A Visual alarm apparatus
GB2155708B (en) * 1984-02-24 1988-02-10 Colin Robert Francis Electrical devices
US4717910A (en) * 1985-11-12 1988-01-05 Scripps Keith A Detector and light assembly
GB8609863D0 (en) * 1986-04-23 1986-05-29 Benson L Fire protection device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090178A (en) * 1976-08-09 1978-05-16 Norris Elwood G Combination smoke detector and lamp structure
US4199754A (en) * 1977-11-21 1980-04-22 Esb Incorporated Circuit for an emergency lighting and fire detector system
US4255746A (en) * 1977-11-21 1981-03-10 Esb Inc. Emergency lighting and fire detector system
US4529976A (en) * 1982-10-29 1985-07-16 Frederick M. Jameson Smoke detector with masking shield
EP0166259A2 (en) * 1984-05-30 1986-01-02 Franz Mahlmeister Fire, smoke, gas or intrusion alarm giver for use in dwellings or industrial premises
US4694285A (en) * 1985-11-12 1987-09-15 Scripps Keith A Combination electrical light, smoke and/or heat detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7109874B2 (en) 2001-03-14 2006-09-19 Acbond Limited Smoke detectors
EP2801959A1 (en) * 2009-10-05 2014-11-12 Cavius APS Smoke alarm

Also Published As

Publication number Publication date
GB2221331A (en) 1990-01-31
AU4059589A (en) 1990-02-19
GB8817974D0 (en) 1988-09-01

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