# US 2019/0170432 A1 · Domestic refrigeration device, and method of controlling a light source arrangement arranged therein > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170432 A1 - Document ID: US20190170432A1 - Status: Published application - Kind: A1 - Application number: 16/205,680 - Filed: 2018-11-30 - Published: 2019-06-06 - Earliest claimed: 2017-12-01 - Assignees: emz-Hanauer GmbH & Co. KGaA - Applicants: emz-Hanauer GmbH & Co. KGaA - Inventors: Manfredi Signorino; Martin Brabec; Daniel Sygnat; Johann Schenkl - Web page: https://patentgrep.com/patent/US20190170432A1 ## CPC - F25D 27/005: {combined with control means} - F21V 33/00: Structural combinations of lighting devices with other articles, not otherwise provided for - F25D 25/025: {Drawers} - H05B 45/22: using optical feedback - F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B) - 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 domestic refrigeration device comprises an interior for storing foods, a light source arrangement which is configured to emit light, in particular white light, of different spectral characteristics into the interior, and a sensor unit which is configured to optically detect light emitted by the lit interior, to allocate to the detected light a value that is characteristic of the color of the emitted light, and to control the light source arrangement in such a manner that light of a specific spectral characteristic, which is dependent on the value that is characteristic of the color, is emitted. ## Claims ### Claim 1 A domestic refrigeration device, comprising: an interior for storing foods; a light source arrangement which is configured to emit light, in particular white light, of different spectral characteristics into the interior; and a sensor unit which is configured to optically detect light emitted by the lit interior, to allocate to the detected light a value that is characteristic of the color of the emitted light, and to control the light source arrangement in such a manner that light of a specific spectral characteristic, which is dependent on the value that is characteristic of the color, is emitted. ### Claim 2 (depends on 1) The domestic refrigeration device according to claim 1, wherein the value that is characteristic of the color of the emitted light is a value for the hue of the emitted light in the HSV color space. ### Claim 3 (depends on 1) The domestic refrigeration device according to claim 1, wherein the light emitted by the light source arrangement is white light with different correlated color temperatures. ### Claim 4 (depends on 1) The domestic refrigeration device according to claim 1, wherein the light source arrangement is configured to emit light into a partial volume of the interior that is in the form of a separate storage region. ### Claim 5 (depends on 4) The domestic refrigeration device according to claim 4, wherein the separate storage region can be brought from a closed state into an open state and vice versa, and wherein the sensor unit further comprises a position sensor for detecting the closed state and the open state of the separate storage region. ### Claim 6 (depends on 4) The domestic refrigeration device according to claim 4, wherein the separate storage region is a cold compartment, in particular for fresh foods, which is arranged to be displaceable between an open state and a closed state, wherein in the closed state of the cold compartment a base plate on which the light source arrangement and the sensor unit are provided is arranged above an open side of the cold compartment and spaced apart from the open side of the cold compartment. ### Claim 7 (depends on 6) The domestic refrigeration device according to claim 6, wherein the light source arrangement is arranged along a longitudinal direction of the base plate narrow side and inclined relative to the base plate narrow side in the direction towards the separate storage compartment, and wherein the base plate narrow side is in particular an end face of the base plate. ### Claim 8 (depends on 6) The domestic refrigeration device according to claim 6, wherein the sensor unit is arranged on a base plate flat side facing the cold compartment. ### Claim 9 (depends on 6) The domestic refrigeration device according to claim 6, wherein the base plate has a screen into which the light source arrangement is integrated. ### Claim 10 (depends on 9) The domestic refrigeration device according to claim 9, wherein the screen has a curved reflector portion opposite the light source arrangement. ### Claim 11 (depends on 1) The domestic refrigeration device according to claim 1, wherein the light source arrangement has a plurality of light-emitting diodes, LEDs, which emit light of different wavelengths. ### Claim 12 (depends on 11) The domestic refrigeration device according to claim 11, wherein the sensor unit comprises a light sensor which is sensitive in the different wavelengths. ### Claim 13 (depends on 1) The domestic refrigeration device according to claim 1, wherein the sensor unit comprises a micro-camera for optically detecting the lit interior. ### Claim 14 (depends on 1) A method of controlling a light source arrangement, wherein the light source arrangement is arranged in a domestic refrigeration device, in particular in a domestic refrigeration device according to claim 1, which comprises an interior for storing foods, and the light source arrangement is configured to emit light, in particular white light, of different spectral characteristics into the interior, the method comprising: lighting the interior by means of the light source arrangement with light, in particular white light; optically detecting the light emitted by the lit interior; determining a value that is characteristic of the color of the emitted light; and controlling the light source arrangement in such a manner that light of a specific spectral characteristic, which is dependent on the value that is characteristic of the color, is emitted. ### Claim 15 (depends on 14) The method according to claim 14, wherein the value that is characteristic of the color of the emitted light is a value for the hue of the emitted light in the HSV color space. ### Claim 16 (depends on 15) The method according to claim 15, further comprising: allocating the determined value for the hue to one of a plurality of color value groups, wherein a color value group in each case comprises one or more color value ranges, each color value group having color value ranges which are different from one another, and wherein each color value group is in turn allocated to a specific correlated color temperature; and controlling the light source arrangement in such a manner that light with a correlated color temperature that corresponds to the correlated color temperature allocated to the color value group to which the determined value for the hue was allocated is emitted. ### Claim 17 (depends on 14) The method according to claim 14, wherein the lit interior is a partial volume of the interior in the form of a separate storage region, wherein the separate storage region can be brought from a closed state into an open state and vice versa, and wherein the closed state and the open state can be detected by means of a position sensor, and wherein the method according to claim 14 is started only when the closed state is detected by means of the position sensor after a predetermined time period following the open state. ### Claim 18 (depends on 14, 17) The method according to claim 17, wherein the light source arrangement comprises a plurality of light sources, in particular light-emitting diodes, LEDs, which emit light of different wavelengths, and a sensor unit having a light sensor which is sensitive in the different wavelengths, wherein the light sources, when the method according to claim 14 is started, are controlled in such a manner that they emit light of different wavelengths temporally in succession for lighting the interior. ### Claim 19 (depends on 5) The domestic refrigeration device according to claim 5, wherein the separate storage region is a cold compartment, in particular for fresh foods, which is arranged to be displaceable between an open state and a closed state, wherein in the closed state of the cold compartment a base plate on which the light source arrangement and the sensor unit are provided is arranged above an open side of the cold compartment and spaced apart from the open side of the cold compartment. ### Claim 20 (depends on 7) The domestic refrigeration device according to claim 7, wherein the sensor unit is arranged on a base plate flat side facing the cold compartment.