# US 11,439,207 B2 · Smart belt > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,207 B2 - Document ID: US11439207B2 - Status: Granted - Kind: B2 - Application number: 15/743,253 - Filed: 2017-07-10 - Published: 2020-05-07 - Granted: 2022-09-13 - Earliest claimed: 2016-08-18 - Assignees: Beijing BOE Technology Development Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co. Ltd. - Inventors: Likuan Fan; Peng Sun - Web page: https://patentgrep.com/patent/US11439207B2 ## CPC - A41F 9/002: {Free belts} - A44B 11/005: {Buckles combined with other articles, e.g. with receptacles} - A41D 1/002: {adapted to accommodate electronic equipment (patients' garments for medical monitoring A41D13/1281; luminous ornaments A41D27/085)} - A41F 9/00: Belts, girdles, or waistbands for trousers or skirts - F21V 33/0008: {Clothing or clothing accessories, e.g. scarfs, gloves or belts} - G01C 21/12: executed aboard the object being navigated; Dead reckoning - G01C 21/20: Instruments for performing navigational calculations (G01C21/24, G01C21/26 take precedence) - G01C 21/3407: {specially adapted for specific applications} - G01C 21/365: {Guidance using head up displays or projectors, e.g. virtual vehicles or arrows projected on the windscreen or on the road itself} - G01S 19/13: Receivers - G01S 19/14: specially adapted for specific applications - G06F 1/163: {Wearable computers, e.g. on a belt} - F21W 2111/00: Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 - G09F 19/18: involving the use of optical projection means, e.g. projection of images on clouds (projection apparatus per se G03B) - G09F 27/005: {Signs associated with a sensor} - A41F: GARMENT FASTENINGS; SUSPENDERS - A44B: BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE (fastenings specially adapted for footwear A43C) - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS ## Abstract The present disclosure relates to a smart belt including: a belt body; a belt buckle provided on the belt body; a GPS positioning mechanism for generating a traveling direction; and a rotatable direction indication mechanism for indicating the traveling direction; a drive mechanism for driving the direction indication mechanism to rotate to indicate the traveling direction according to the traveling direction given by the GPS positioning mechanism; and a light source used to project the traveling direction indicated by the direction indication mechanism onto the road surface. The beneficial effects of the present disclosure are: users' hands can be freed and the portability and convenience of navigation usage can be improved. ## Claims ### Claim 1 A smart belt comprising: a belt body; and a belt buckle, which is provided on the belt body; wherein the smart belt further comprises: a GPS positioning mechanism for generating a travel direction; a rotatable direction indication mechanism for indicating the traveling direction, which is provided on the belt buckle; a drive mechanism for driving the direction indication mechanism to rotate to indicate the traveling direction according to the traveling direction given by the GPS positioning mechanism; a light source for projecting the traveling direction indicated by the direction indication mechanism onto a road surface. ### Claim 2 (depends on 1) The smart belt according to claim 1, wherein the light source is disposed on a side of the direction indication mechanism close to the belt buckle. ### Claim 3 (depends on 2) The smart belt according to claim 2, wherein the light source is disposed at a position higher than a position of the direction indication mechanism in a direction perpendicular to the road surface. ### Claim 4 (depends on 1) The smart belt according to claim 1, wherein the direction indication mechanism comprises: a support structure having a cylindrical shape and its axial direction perpendicular to a main surface of the belt buckle, and having a receiving space in its central area; a direction pointer which is located in the receiving space. ### Claim 5 (depends on 4) The smart belt according to claim 4, wherein the direction indication mechanism further comprises: a fixed dial having a scale, wherein the fixed dial is stacked on a side of the support structure close to the belt buckle, and the fixed dial is coaxially arranged with the support structure. ### Claim 6 (depends on 5) The smart belt according to claim 5, wherein there are 4 main scales and 4, 8 or 12 sub scales provided uniformly on the fixed dial. ### Claim 7 (depends on 5) The smart belt according to claim 5, wherein the direction pointer comprises a fixed fulcrum pivoted on the support structure and a free end rotatable about the fixed fulcrum, and the fixed fulcrum is located at an axis of the support structure. ### Claim 8 (depends on 1) The smart belt according to claim 1, wherein the drive mechanism comprises: a link gear capable of rotating the direction indication mechanism; a drive gear capable of driving the link gear to rotate; a motor that can control the drive gear to rotate; and a transmission part connecting the motor and the drive gear. ### Claim 9 (depends on 1) The smart belt according to claim 1, wherein the smart belt further comprises a voice output mechanism that can output the traveling direction by voice. ### Claim 10 (depends on 9) The smart belt according to claim 9, further comprising a function key provided on the belt buckle, for controlling on/off of the direction indication mechanism, the light source and/or the voice output mechanism.