# US 10,502,400 B2 · LED illumination device with single pressure cavity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,400 B2 - Document ID: US10502400B2 - Status: Granted - Kind: B2 - Application number: 15/857,904 - Filed: 2017-12-29 - Published: 2018-05-24 - Granted: 2019-12-10 - Earliest claimed: 2015-12-28 - Assignees: Eaton Intelligent Power Limited - Applicants: Eaton Intelligent Power Limited - Inventors: Walten P. Owens; Christopher D. Nolan; Joseph R. Casper - Web page: https://patentgrep.com/patent/US10502400B2 ## CPC - F21V 21/15: specially adapted for power operation, e.g. by remote control - F21S 2/005: {of modular construction} - F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)} - F21V 15/01: Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors} - F21V 29/74: with fins or blades - F21V 31/005: {Sealing arrangements therefor} - G08B 21/182: {Level alarms, e.g. alarms responsive to variables exceeding a threshold} - F21V 21/30: Pivoted housings or frames - F21V 29/507: of means for protecting lighting devices from damage, e.g. housings - F21V 29/89: Metals - F21V 31/03: with provision for venting {(for vehicle head lights F21S45/33; for vehicle rear lights F21S41/192)} - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2113/00: Combination of light sources - F21Y 2115/10: Light-emitting diodes [LED] - H05B 47/19: via wireless transmission - 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 - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A method for performing self-diagnosis in a light fixture. The method includes receiving data corresponding to a plurality of environmental conditions from one or more sensors. The one or more sensors are positioned in a sensor cavity of a light fixture wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions. The method also includes analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value. ## Claims ### Claim 1 A method for performing self-diagnosis in a light fixture comprising: by a processor, receiving data corresponding to a plurality of environmental conditions from one or more sensors, wherein the one or more sensors are positioned in a sensor cavity of a light fixture, and wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions; by the processor, analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value, wherein: the light fixture further comprises a circuit board cavity that includes a circuit board with control electronics and the processor, and the plurality of conduits also provide a sealed path between the LED modules, the sensor cavity, and the circuit board cavity. ### Claim 2 (depends on 1) The method of claim 1, wherein analyzing the data to determine if at least one of the plurality of environmental conditions has undergone at least one one or more changes comprises comparing the received data corresponding to a plurality of environmental conditions with a set of optimal environmental conditions. ### Claim 3 (depends on 1) The method of claim 1, wherein receiving the data corresponding to the plurality of environmental conditions from the one or more sensors comprises receiving data corresponding to the plurality of environmental conditions from the one or more sensors upon occurrence of a triggering event selected from one or more of the following: user instructions; turning on of the light fixture; turning off of the light fixture; manufacturing or quality testing of the light fixture; or occurrence of a fault in the light fixture. ### Claim 4 (depends on 1) The method of claim 1, wherein: the one or more sensors comprise one or more of the following: a pressure sensor, a temperature sensor, a humidity sensor, a chemical substance sensor, a fire sensor, a particulate sensor, a biological agent sensor, a moisture sensor, an air speed detector, or an orientation sensor; and the plurality of environmental conditions comprise one or more of the following: pressure, temperature, humidity, chemical substance presence, or particulate matter presence. ### Claim 5 (depends on 1) The method of claim 1, further comprising, by the processor, in response to detecting a change that exceeds the threshold level, the threshold change or the rate of change that is greater than the threshold value, executing a corrective measure. ### Claim 6 (depends on 5) The method of claim 5, wherein: the one or more sensors comprise an orientation sensor; the detected change comprises a change in orientation; and the corrective measure comprises causing a motor to adjust an orientation of the light fixture. ### Claim 7 (depends on 5) The method of claim 5, wherein: the one or more sensors comprise a pressure sensor or a humidity sensor; the detected change comprises a change in pressure or a change in humidity; and the corrective measure comprises turning off one or more of the LED modules. ### Claim 8 (depends on 5) The method of claim 5, wherein: the one or more sensors comprise a pressure sensor or a humidity sensor; the detected change comprises a change in pressure or a change in humidity; and the corrective measure comprises opening a vent to relieve pressure in the sealed path. ### Claim 9 (depends on 5) The method of claim 5, wherein: the one or more sensors comprise a pressure sensor or a humidity sensor; the detected change comprises a change in pressure or a change in humidity; and the corrective measure comprises activating a pump to increase pressure in the sealed path. ### Claim 10 (depends on 5) The method of claim 5, wherein the corrective measure comprises one or more the following: shutting off power to one of the LED modules of the light fixture; or shutting off power to all of the LED modules of the light fixture. ### Claim 11 (depends on 5) The method of claim 5, wherein the corrective measure is performed for a predefined period of time, until the detected at least one change is reversed, or both. ### Claim 12 (depends on 1) The method of claim 1, further comprising, by the processor, in response to detecting a change that exceed the threshold level, the threshold change or the rate of change that is greater than the threshold value, generating an alert. ### Claim 13 (depends on 12) The method of claim 12, wherein the alert comprises information corresponding to one or more of the following: the detected at least one change, instructions for a user to perform at least one corrective action, or one or more corrective measures initiated by the processor. ### Claim 14 (depends on 13) The method of claim 13, wherein the information is included in a visual pattern. ### Claim 15 The method of 1, further comprising, by the processor: in response to receiving data from the one or more sensors, performing the self-diagnosis; and causing a transmitter configured to transmit the data from the one or more sensors, an output of the self-diagnosis, or both to a remote receiver. ### Claim 16 A method for performing self-diagnosis in a light fixture comprising: by a processor: receiving data corresponding to a plurality of environmental conditions from one or more sensors, wherein the one or more sensors are positioned in a sensor cavity of a light fixture, and wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions; analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value; and in response to detecting a change that exceeds the threshold level, the threshold change or the rate of change that is greater than the threshold value, executing a corrective measure, wherein: the one or more sensors comprise an orientation sensor, the detected change comprises a change in orientation, and the corrective measure comprises causing a motor to adjust an orientation of the light fixture. ### Claim 17 (depends on 16) The method of claim 16, wherein analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more changes comprises comparing the received data corresponding to a plurality of environmental conditions with a set of optimal environmental conditions. ### Claim 18 (depends on 16) The method of claim 16, wherein receiving the data corresponding to the plurality of environmental conditions from the one or more sensors comprises receiving data corresponding to the plurality of environmental conditions from the one or more sensors upon occurrence of a triggering event selected from one or more of the following: user instructions; turning on of the light fixture; turning off of the light fixture; manufacturing or quality testing of the light fixture; or occurrence of a fault in the light fixture. ### Claim 19 (depends on 16) The method of claim 16, wherein: the one or more sensors further comprise one or more of the following: a pressure sensor, a temperature sensor, a humidity sensor, a chemical substance sensor, a fire sensor, a particulate sensor, a biological agent sensor, a moisture sensor, or an air speed detector; and the plurality of environmental conditions comprise one or more of the following: pressure, temperature, humidity, chemical substance presence, or particulate matter presence. ### Claim 20 (depends on 16) The method of claim 16, wherein: the one or more sensors further comprise a pressure sensor or a humidity sensor; the detected change further comprises a change in pressure or a change in humidity; and the corrective measure further comprises at least one of the following: turning off one or more of the LED modules, opening a vent to relieve pressure in the sealed path, or activating a pump to increase pressure in the sealed path. ### Claim 21 (depends on 16) The method of claim 16, wherein the corrective measure further comprises one or more the following: shutting off power to one of the LED modules of the light fixture; or shutting off power to all of the LED modules of the light fixture. ### Claim 22 (depends on 16) The method of claim 16, wherein the corrective measure is performed for a predefined period of time, until the detected at least one change is reversed, or both. ### Claim 23 (depends on 16) The method of claim 16, further comprising, by the processor, in response to detecting a change that exceed the threshold level, the threshold change or the rate of change that is greater than the threshold value, generating an alert. ### Claim 24 (depends on 23) The method of claim 23, wherein the alert comprises information corresponding to one or more of the following: the detected at least one change, instructions for a user to perform at least one corrective action, or one or more corrective measures initiated by the processor. ### Claim 25 (depends on 24) The method of claim 24, wherein the information is included in a visual pattern. ### Claim 26 The method of 16, further comprising, by the processor: in response to receiving data from the one or more sensors, performing the self-diagnosis; and causing a transmitter configured to transmit the data from the one or more sensors, an output of the self-diagnosis, or both to a remote receiver. ### Claim 27 A method for performing self-diagnosis in a light fixture comprising: by a processor: receiving data corresponding to a plurality of environmental conditions from one or more sensors, wherein the one or more sensors are positioned in a sensor cavity of a light fixture, and wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions; analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value; and in response to detecting a change that exceeds the threshold level, the threshold change or the rate of change that is greater than the threshold value, executing a corrective measure, wherein: the one or more sensors comprise a pressure sensor or a humidity sensor; the detected change comprises a change in pressure or a change in humidity; and the corrective measure comprises opening a vent to relieve pressure in the sealed path. ### Claim 28 (depends on 27) The method of claim 27, wherein analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more changes comprises comparing the received data corresponding to a plurality of environmental conditions with a set of optimal environmental conditions. ### Claim 29 (depends on 27) The method of claim 27, wherein receiving the data corresponding to the plurality of environmental conditions from the one or more sensors comprises receiving data corresponding to the plurality of environmental conditions from the one or more sensors upon occurrence of a triggering event selected from one or more of the following: user instructions; turning on of the light fixture; turning off of the light fixture; manufacturing or quality testing of the light fixture; or occurrence of a fault in the light fixture. ### Claim 30 (depends on 27) The method of claim 27, wherein: the one or more sensors further comprise one or more of the following: a pressure sensor, a temperature sensor, a humidity sensor, a chemical substance sensor, a fire sensor, a particulate sensor, a biological agent sensor, a moisture sensor, or an air speed detector; and the plurality of environmental conditions comprise one or more of the following: pressure, temperature, humidity, chemical substance presence, or particulate matter presence. ### Claim 31 (depends on 27) The method of claim 27, wherein the corrective measure further comprises at least one of the following: turning off one or more of the LED modules; shutting off power to one of the LED modules of the light fixture; or shutting off power to all of the LED modules of the light fixture. ### Claim 32 (depends on 27) The method of claim 27, wherein the corrective measure is performed for a predefined period of time, until the detected at least one change is reversed, or both. ### Claim 33 (depends on 27) The method of claim 27, further comprising, by the processor, in response to detecting a change that exceed the threshold level, the threshold change or the rate of change that is greater than the threshold value, generating an alert. ### Claim 34 (depends on 33) The method of claim 33, wherein the alert comprises information corresponding to one or more of the following: the detected at least one change, instructions for a user to perform at least one corrective action, or one or more corrective measures initiated by the processor. ### Claim 35 (depends on 34) The method of claim 34, wherein the information is included in a visual pattern. ### Claim 36 The method of 27, further comprising, by the processor: in response to receiving data from the one or more sensors, performing the self-diagnosis; and causing a transmitter configured to transmit the data from the one or more sensors, an output of the self-diagnosis, or both to a remote receiver. ### Claim 37 A method for performing self-diagnosis in a light fixture comprising: by a processor: receiving data corresponding to a plurality of environmental conditions from one or more sensors, wherein the one or more sensors are positioned in a sensor cavity of a light fixture, and wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions; analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value; and in response to detecting a change that exceeds the threshold level, the threshold change or the rate of change that is greater than the threshold value, executing a corrective measure, wherein: the one or more sensors comprise a pressure sensor or a humidity sensor; the detected change comprises a change in pressure or a change in humidity; and the corrective measure comprises operating a pump to increase pressure in the sealed path. ### Claim 38 (depends on 37) The method of claim 37, wherein analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more changes comprises comparing the received data corresponding to a plurality of environmental conditions with a set of optimal environmental conditions. ### Claim 39 (depends on 37) The method of claim 37, wherein receiving the data corresponding to the plurality of environmental conditions from the one or more sensors comprises receiving data corresponding to the plurality of environmental conditions from the one or more sensors upon occurrence of a triggering event selected from one or more of the following: user instructions; turning on of the light fixture; turning off of the light fixture; manufacturing or quality testing of the light fixture; or occurrence of a fault in the light fixture. ### Claim 40 (depends on 37) The method of claim 37, wherein: the one or more sensors further comprise one or more of the following: a pressure sensor, a temperature sensor, a humidity sensor, a chemical substance sensor, a fire sensor, a particulate sensor, a biological agent sensor, a moisture sensor, or an air speed detector; and the plurality of environmental conditions comprise one or more of the following: pressure, temperature, humidity, chemical substance presence, or particulate matter presence. ### Claim 41 (depends on 37) The method of claim 37, wherein the corrective measure further comprises one or more the following: turning off one or more of the LED modules; shutting off power to one of the LED modules of the light fixture; or shutting off power to all of the LED modules of the light fixture. ### Claim 42 (depends on 37) The method of claim 37, wherein the corrective measure is performed for a predefined period of time, until the detected at least one change is reversed, or both. ### Claim 43 (depends on 37) The method of claim 37, further comprising, by the processor, in response to detecting a change that exceed the threshold level, the threshold change or the rate of change that is greater than the threshold value, generating an alert. ### Claim 44 (depends on 43) The method of claim 43, wherein the alert comprises information corresponding to one or more of the following: the detected at least one change, instructions for a user to perform at least one corrective action, or one or more corrective measures initiated by the processor. ### Claim 45 (depends on 44) The method of claim 44, wherein the information is included in a visual pattern. ### Claim 46 The method of 37, further comprising, by the processor: in response to receiving data from the one or more sensors, performing the self-diagnosis; and causing a transmitter configured to transmit the data from the one or more sensors, an output of the self-diagnosis, or both to a remote receiver.