# US 8,569,971 B2 · Night light > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,569,971 B2 - Document ID: US8569971B2 - Status: Granted - Kind: B2 - Application number: 12/065,494 - Filed: 2006-08-30 - Published: 2008-09-18 - Granted: 2013-10-29 - Earliest claimed: 2005-08-31 - Applicants: Steven Parker - Inventors: Steven Parker - Web page: https://patentgrep.com/patent/US8569971B2 ## CPC - G01K 1/02: Means for indicating or recording specially adapted for thermometers - F21S 8/035: {by means of plugging into a wall outlet, e.g. night light} - F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors} - G01K 3/00: Thermometers giving results other than momentary value of temperature (G01K7/42 takes precedence) - H05B 47/10: Controlling the light source - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A night-light (100) having a light source (104) and control circuitry (110), which is arranged to receive a temperature input comprising a measure of temperature measured by a temperature sensor (208). The light source (104) is arranged to emit light in a first color when the temperature measured by a temperature sensor (208) is within a predetermined range and to emit light in an alternative color when the temperature measured by the temperature sensor (208) is outside the predetermined range. The night-light may be of particular use in babies' nurseries. ## Claims ### Claim 1 A nursery night-light comprising: a housing; a light source being located within the housing; a frosted dome being attached to the housing, the dome configured to diffuse light generated by the light source; control circuitry arranged to receive a temperature input comprising a measure of temperature measured by a temperature sensor and to control the light source, the light source being arranged to emit light of a first colour when the temperature input is within a predetermined range and to emit light of at least one alternative colour when the temperature input is outside the predetermined range; and at least one secondary temperature indicator arranged to indicate whether the temperature input is within the predetermined range, the at least one secondary temperature indicator is additional to the light source, wherein the at least one secondary temperature indicator is located on the housing such that a viewer visualizes without looking through the dome. ### Claim 2 (depends on 1) The night-light according to claim 1, further comprising a temperature sensor arranged to provide the temperature input and arranged to affix to the exterior of the night-light. ### Claim 3 (depends on 1) The night-light according to claim 1, wherein the color of the emitted light has an intrinsic meaning to an observer. ### Claim 4 (depends on 3) The night-light according to claim 3, wherein the intrinsic meaning is associated with one of hot or cold. ### Claim 5 (depends on 1) The night-light according to claim 1, wherein the at least one secondary temperature indicator comprises one or more of the following: a display means arranged to display a symbol, a colour, a light, a coloured light, textual instructions, temperature information; an alarm means. ### Claim 6 (depends on 1) The night-light according to claim 1, wherein the secondary temperature indicator means has an intrinsic meaning to an observer. ### Claim 7 (depends on 1) The night-light according to claim 1, wherein the light source is arranged to emit light of at least three colours, a first colour when the temperature input is within the predetermined range, a second colour when the temperature input is below that range and a third colour when the temperature input is above that range. ### Claim 8 (depends on 7) The night-light according to claim 7, wherein the predetermined range is between roughly 16° C. and roughly 20° C. ### Claim 9 (depends on 1) The night-light according to claim 1, wherein the light source is arranged to emit light of four colours, a first colour when the temperature input is within the predetermined range, a second colour to indicate that the temperature input is below the predetermined range, a third colour when the temperature input is above that range, but not substantially so, and a fourth colour to indicate that the temperature input dangerous exceeds the predetermined range. ### Claim 10 (depends on 9) The night-light according to claim 9, wherein the third colour is used when the temperature input is above 20° C. ### Claim 11 (depends on 10) The night-light according to claim 10, wherein the fourth colour is used when the temperature input is above 24° C. ### Claim 12 (depends on 1) The night-light according to claim 1, further comprising an instruction set, linking the colour of the light to a recommended action. ### Claim 13 (depends on 12) The night-light according to claim 12, wherein the recommended actions relate to the provision of sleepwear. ### Claim 14 (depends on 12) The night-light according to claim 12, wherein the recommended actions include one or more of the following: cool room, heat room, use light sleepwear, use moderate sleepwear, use heavy sleepwear, use an alternative room. ### Claim 15 (depends on 1) The night-light according to claim 1, further comprising a kit. ### Claim 16 (depends on 15) The night-light according to claim 15, wherein the kit further comprises a power supply means arranged to supply power to the night-light, the power supply means comprising the temperature sensor. ### Claim 17 (depends on 16) The night-light according to claim 16, wherein the kit further comprises a set of instructions providing details of the action recommended given the temperature of a room as indicated by the colour of the light. ### Claim 18 (depends on 17) The night-light according to claim 17, wherein the set of instructions provides a sleepwear guide which can be used by a carer to select sleepwear for a baby with an appropriate level of thermal resistance. ### Claim 19 (depends on 18) The night-light according to claim 18, wherein the set of instructions defines the correct level of sleepwear with reference to the Tog value. ### Claim 20 (depends on 17) The night-light according to claim 17, wherein the set of instructions comprises information printed on one of the night light or in an instruction manual. ### Claim 21 (depends on 20) The night-light according to claim 20, wherein the kit further comprises sleepwear of known thermal resistance. ### Claim 22 (depends on 15) The night-light according to claim 15, wherein the set of instructions further comprises information on how to site the night-light. ### Claim 23 The night-light according to claim lwherein the at least one secondary temperature indicator comprises a display means arranged to display a symbol. ### Claim 24 A nursery night-light comprising: a light source; control circuitry arranged to receive a temperature input comprising a measure of temperature measured by a temperature sensor and to control the light source, the light source being arranged to emit light of a first color when the temperature input is within a predetermined range and to emit light of at least one alternative color when the temperature input is outside the predetermined range; at least one secondary temperature indicator arranged to indicate whether the temperature input is within the predetermined range; and a housing, wherein the at least one secondary temperature indicator is located on the housing.