# US 11,898,739 B2 · Safety detection device and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,739 B2 - Document ID: US11898739B2 - Status: Granted - Kind: B2 - Application number: 17/414,897 - Filed: 2019-12-18 - Published: 2022-03-03 - Granted: 2024-02-13 - Earliest claimed: 2018-12-18 - Assignees: Defining Future Solutions PTY Ltd - Applicants: Defining Future Solutions Pty Ltd. - Inventors: David Frederick Small - Web page: https://patentgrep.com/patent/US11898739B2 ## CPC - F21V 33/0076: {Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices} - F21S 9/022: {Emergency lighting devices} - F21V 21/04: Recessed bases - G08B 5/36: using visible light sources - G08B 7/06: using electric transmission {, e.g. involving audible and visible signalling through the use of sound and light sources} - G08B 7/066: {guiding along a path, e.g. evacuation path lighting strip} - G08B 17/10: Actuation by presence of smoke or gases {, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means} - G08B 17/103: using a light emitting and receiving device - G08B 17/113: Constructional details - G08B 25/009: {Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range} - F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling} - F21S 8/061: {with a non-rigid pendant, i.e. a cable, wire or chain} - F21V 21/03: Ceiling bases, e.g. ceiling roses (F21V21/04 takes precedence) - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract Light fixtures and safety detection systems are provided that enable smoke detection devices to be installed in a manner that is out-of-sight, thus alleviating the need to unsightly smoke detection devices to be installed throughout a building. The safety detection system comprises: an electrical fixture, for installation in a building; and a smoke detection device, for detecting at least smoke in the building. The smoke detection device is integrated with the electrical fixture such that the smoke detection device is concealed when installed. ## Claims ### Claim 1 A safety detection system, comprising: a light fixture, for installation in a ceiling of a building; and a reservoir, configured to be at least partly received in a space defined above the ceiling and behind the light fixture, the reservoir including a smoke detection device, for detecting at least smoke in the building, wherein the smoke detection device is integrated with the light fixture such that the smoke detection device is concealed when installed, and wherein the smoke detection device comprises an inner body, separating the reservoir from the light fixture. ### Claim 2 (depends on 1) The safety detection system of claim 1, wherein the light fixture comprises a downlight fixture, the downlight fixture at least partly received in a space defined above the ceiling. ### Claim 3 (depends on 1) The safety detection system of claim 1, wherein the reservoir includes one or more apertures, configured to enable airflow into the reservoir. ### Claim 4 (depends on 1) The safety detection system of claim 1, wherein the light fixture includes a faceplate, configured to conceal the reservoir. ### Claim 5 (depends on 1) The safety detection system of claim 1, including an electrical input, the electrical input configured to provide power to both the smoke detection device and the light fixture. ### Claim 6 (depends on 5) The safety detection system of claim 5, wherein the electrical input is a switched electrical input, configured to enable the light fixture to be turned on and off. ### Claim 7 (depends on 6) The safety detection system of claim 6, further including a battery configured to power the smoke detection device when the light fixture is switched off. ### Claim 8 (depends on 1) The safety detection system of claim 1, including a switched electrical input configured to power the light fixture, and non switched electrical input configured to power the smoke detection device. ### Claim 9 (depends on 1) The safety detection system of claim 1, wherein the light fixture includes a light that is configured to operate in a signalling configuration when smoke is detected by the smoke detection device. ### Claim 10 (depends on 1) The safety detection system of claim 1, including a second light fixture, the second light fixture including a light that is configured to operate in a signalling configuration when smoke is detected by the smoke detection device. ### Claim 11 (depends on 10) The safety detection system of claim 10, wherein the light fixture and the second light fixture are wirelessly coupled. ### Claim 12 (depends on 1) The safety detection system of claim 1, the light fixture including a light configured to illuminate in the event of an alert situation, wherein the light indicates the type or nature of the alert via hue or light activation sequencing. ### Claim 13 (depends on 1) The safety detection system of claim 1, wherein the light fixture includes an illumination component, wherein a hue of the light fixture is variable to signify operating status or alert status information. ### Claim 14 (depends on 1) The safety detection system of claim 1, wherein the light fixture is installed during construction of the building, and is connected to mains power within the building. ### Claim 15 (depends on 1) The safety detection system of claim 1, wherein the smoke detection device includes a communication module, configured to enable the detection device to communicate with remote devices. ### Claim 16 (depends on 1) The safety detection system of claim 1, configured to communicate status and alert information to one or more remote devices. ### Claim 17 (depends on 3) The safety detection system of claim 3, wherein the apertures are provided around a periphery of the light fixture. ### Claim 18 (depends on 1) The safety detection system of claim 1, wherein the reservoir is cylindrical or frustoconical in shape. ### Claim 19 (depends on 1) The safety detection system of claim 1, wherein the reservoir is configured to releasably engage with the fixture.