# US 11,441,748 B2 · Lighting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,748 B2 - Document ID: US11441748B2 - Status: Granted - Kind: B2 - Application number: 17/288,195 - Filed: 2019-11-06 - Published: 2021-12-23 - Granted: 2022-09-13 - Earliest claimed: 2018-11-20 - Assignees: Nippon Telegraph and Telephone Corporation - Applicants: Nippon Telegraph and Telephone Corporation - Inventors: Yoko Ono; Hironobu Minowa; Shuhei Sakamoto; Takeshi Komatsu - Web page: https://patentgrep.com/patent/US11441748B2 ## CPC - F21S 9/02: the power supply being a battery or accumulator - F21V 23/002: {Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm} - F21V 3/02: characterised by the shape - H01M 4/664: {Ceramic materials} - H01M 4/667: {in the form of layers, e.g. coatings} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 50/102: characterised by their shape or physical structure - H01M 50/117: Inorganic material - H01M 50/138: adapted for specific cells, e.g. electrochemical cells operating at high temperature - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/555: Window-shaped terminals - F21S 6/00: Lighting devices intended to be free-standing (F21S9/00, F21S10/00, {F21S13/12} take precedence {lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00}) - F21W 2121/00: Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - 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 - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS ## Abstract To improve design of a lighting device. A lighting device includes optically transparent glass plates provided on side faces and placed on an optical path of light emitted from a light source, where some or all of the optically transparent glass plates contain an optically transparent battery adapted to drive the light source; and an optically transparent glass plate that contains a transparent conductive film by being provided on a bottom face, wherein the optically transparent battery is placed in contact with a pair of transparent conductive film layers, which are connected to the light source. The pair of transparent conductive film layers are formed in a pair of parallel linear grooves formed in a surface of the optically transparent glass plate on the bottom face, and a tabular positive tab and negative tab of the optically transparent battery fit in respective ones of the pair of grooves. ## Claims ### Claim 1 A lighting device comprising; an optically transparent lamp frame that is placed on an optical path of light emitted from a light source; and an optically transparent battery contained in part or all of the lamp frame, where the battery drives the light source, wherein the optically transparent battery includes a first glass substrate layer, a negative electrode layer, a first transparent conductive layer disposed between the first glass substrate layer and the negative electrode layer, a second glass substrate layer, a positive electrode layer, a second transparent conductive layer disposed between the second glass substrate layer and the positive electrode layer, and an electrolyte layer disposed between the negative electrode layer and the positive electrode layer, and wherein the electrolyte layer, the negative electrode layer, and the positive electrode layer form a notch in the optical transparent battery. ### Claim 2 (depends on 1) The lighting device according to claim 1, further comprising a conductive film-coated lamp frame including a transparent conductive film, wherein the optically transparent battery is placed in contact with the transparent conductive film, and the transparent conductive film is connected to the light source. ### Claim 3 (depends on 2) The lighting device according to claim 2, wherein: the transparent conductive film is formed in a pair of linear grooves formed in parallel in a surface of the conductive film-coated lamp frame; and the optically transparent battery has a tabular shape and a tabular positive terminal and a tabular negative terminal protrude from a same side of the optically transparent battery and fit in respective ones of the pair of grooves. ### Claim 4 (depends on 3) The lighting device according to claim 3, wherein there are n optically transparent batteries (n is an integer equal to or larger than 3), which make up side faces of the lighting device; and the conductive film-coated lamp frame is an n-sided polygon, making up a bottom face of the lighting device. ### Claim 5 (depends on 3) The lighting device according to claim 3, wherein the optically transparent lamp frame is made of glass. ### Claim 6 (depends on 2) The lighting device according to claim 2, wherein: the transparent conductive film is formed in a pair of grooves formed in parallel in a surface of the conductive film-coated lamp frame, the pair of grooves drawing n-sided polygons (n is an integer equal to or larger than 3); and there are n optically transparent batteries, each of which has a tabular shape, and a tabular positive terminal and a tabular negative terminal protrude from a same side of each of the optically transparent batteries, and fit in respective ones of the pair of grooves, forming an n-sided polygonal prism. ### Claim 7 (depends on 6) The lighting device according to claim 6, wherein of the n optically transparent batteries, all positive terminals are fitted in one of the pair of grooves and all negative terminals are fitted in another one of the pair of grooves, or the positive terminals and the negative terminals alternate grooves to fit in. ### Claim 8 (depends on 7) The lighting device according to claim 7, wherein there are n optically transparent batteries (n is an integer equal to or larger than 3), which make up side faces of the lighting device; and the conductive film-coated lamp frame is an n-sided polygon, making up a bottom face of the lighting device. ### Claim 9 (depends on 7) The lighting device according to claim 7, wherein the optically transparent lamp frame is made of glass. ### Claim 10 (depends on 6) The lighting device according to claim 6, wherein there are n optically transparent batteries (n is an integer equal to or larger than 3), which make up side faces of the lighting device; and the conductive film-coated lamp frame is an n-sided polygon, making up a bottom face of the lighting device. ### Claim 11 (depends on 6) The lighting device according to claim 6, wherein the optically transparent lamp frame is made of glass. ### Claim 12 (depends on 2) The lighting device according to claim 2, wherein there are n optically transparent batteries (n is an integer equal to or larger than 3), which make up side faces of the lighting device; and the conductive film-coated lamp frame is an n-sided polygon, making up a bottom face of the lighting device. ### Claim 13 (depends on 12) The lighting device according to claim 12, wherein the optically transparent lamp frame is made of glass. ### Claim 14 (depends on 2) The lighting device according to claim 2, wherein the optically transparent lamp frame is made of glass. ### Claim 15 (depends on 1) The lighting device according to claim 1, wherein the optically transparent lamp frame is made of glass.