# US 10,485,069 B2 · Illuminating apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,485,069 B2 - Document ID: US10485069B2 - Status: Granted - Kind: B2 - Application number: 15/984,389 - Filed: 2018-05-20 - Published: 2018-12-06 - Granted: 2019-11-19 - Earliest claimed: 2017-05-30 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Keisuke Seki; Shigeru Ido; Kazuhiko Hayashi - Web page: https://patentgrep.com/patent/US10485069B2 ## CPC - G09F 13/005: {Illumination controller or illuminated signs including an illumination control system} - G06K 7/1473: {error correction} - G09F 13/02: Signs, boards, or panels, illuminated by artificial light sources positioned in front of the insignia - G09F 13/22: electroluminescent (electroluminescent light sources per se H05B33/00) - H05B 45/20: Controlling the colour of the light - H05B 45/38: using boost topology - H05B 45/385: using flyback topology - H05B 47/195: the transmission using visible or infrared light - F21V 23/008: {the casing being outside the housing of the lighting device} - F21Y 2115/10: Light-emitting diodes [LED] - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract An illuminating apparatus includes a first light emitter, a second light emitter which emits light including more predefined color components than light emitted by the first light emitter, and a lighting device which supplies current modulated according to a visible light communication signal, to the first light emitter. The lighting device supplies a constant current to the second light emitter, while the first light emitter is supplied with current. ## Claims ### Claim 1 An illuminating apparatus, comprising: a first light emitter; a second light emitter which emits light including more red components than light emitted by the first light emitter; and a lighting device including a control circuit that obtains a visible light communication signal that causes light emitted by the illuminating apparatus to blink at a rate that is unrecognizable to human eyes and a bright and dark pattern created by the blinking light is a data transmission signal, the control circuit controls a first current supplied to the first light emitter by modulating the first current according to the visible light communication signal, the control circuit controls a second current supplied to the second light emitter by modulating the second current according to the visible light communication signal in reverse phase relative to the first current, the lighting device supplies, to the second light emitter, the second current modulated in reverse phase relative to the first current, while the first current is supplied to the first light emitter. ### Claim 2 (depends on 1) The illuminating apparatus according to claim 1, wherein the first light emitter emits white light having a first color temperature, and the second light emitter emits white light having a second color temperature lower than the first color temperature. ### Claim 3 (depends on 1) The illuminating apparatus according to claim 1, wherein the first light emitter includes a first light emitting element which emits blue light and a second light emitting element which emits green light, the second light emitter includes a third light emitting element which emits red light, and the lighting device supplies a constant current to the second light emitter while the first current is supplied to the first light emitter. ### Claim 4 (depends on 1) The illuminating apparatus according to claim 1, wherein the lighting device includes: a constant current power supply circuit; and a first modulation circuit and a second modulation circuit which are connected in series between output terminals of the constant current power supply circuit, wherein the first modulation circuit includes a first capacitor connected in parallel to the first modulation circuit, the second modulation circuit includes a second capacitor connected in parallel to the second modulation circuit, the first modulation circuit supplies the first current to the first light emitter, the first current being obtained by modulating, according to the visible light communication signal, current supplied from one of the constant current power supply circuit and the first capacitor, and the second modulation circuit supplies the second current to the second 10 light emitter, the second current being obtained by modulating, in reverse phase relative to the first current, current supplied from one of the constant current power supply circuit and the second capacitor. ### Claim 5 (depends on 4) The illuminating apparatus according to claim 4, further comprising: a casing which houses the constant current power supply circuit, the first modulation circuit, and the second modulation circuit. ### Claim 6 (depends on 4) The illuminating apparatus according to claim 4, further comprising: a first casing which houses the constant current power supply circuit; a second casing which houses the first modulation circuit and is different from the first casing; and a third casing which houses the second modulation circuit and is different from the first casing and the second casing. ### Claim 7 (depends on 1) The illuminating apparatus according to claim 1, wherein the first light emitter blinks while the first current is supplied to the first light emitter, and the second light emitter continues to emit light while the first current is supplied to the first light emitter. ### Claim 8 (depends on 1) A signboard, comprising: the illuminating apparatus according to claim 1, and a display panel that is illuminated by the illuminating apparatus and includes at least one of a text character and a graphic.