# US 2021/0341584 A1 · Lidar base, lidar device and autonomous vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0341584 A1 - Document ID: US20210341584A1 - Status: Published application - Kind: A1 - Application number: 17/375,738 - Filed: 2021-07-14 - Published: 2021-11-04 - Earliest claimed: 2020-12-03 - Applicants: Beijing Baidu Netcom Science and Technology Co., Ltd. - Inventors: Rui Ren; Zongtao Fan; Bolei Wang; Jingsheng Hu; Jiali Zhang; Yuquan Yuan; Yanfu Zhang - Web page: https://patentgrep.com/patent/US20210341584A1 ## CPC - G01S 7/4813: {Housing arrangements} - G01S 17/931: of land vehicles - B60S 1/54: using gas, e.g. hot air - B60S 1/56: specially adapted for cleaning other parts or devices than front windows or windscreens {(rear-view mirror arrangements mounted on vehicle exterior including cleaning devices B60R1/0602)} - G01S 7/4817: {relating to scanning} - G01S 2007/4977: {including means to prevent or remove the obstruction} - 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 - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract A lidar base, a lidar device and an autonomous vehicle are provided, and relate to the technical field of automatic driving. Wherein, the lidar base includes: a seat body for installing a lidar assembly; a cover plate arranged on the seat body, and a diversion gap being defined between the cover plate and the base body, wherein an air outlet of the diversion gap is arranged toward the lidar assembly. ## Claims ### Claim 1 A lidar base, comprising: a base body configured to install a lidar assembly; and a cover plate disposed on the base body, and a diversion gap being defined between the cover plate and the base body, wherein an air outlet of the diversion gap is arranged toward the lidar assembly. ### Claim 2 (depends on 1) The lidar base of claim 1, wherein the base body is configured in a ring shape to define a central hole, and the central hole is configured to install the lidar assembly, and wherein an extension direction of the diversion gap is toward a central axis of the base body and is inclined upwardly. ### Claim 3 (depends on 1) The lidar base of claim 1, wherein the base body is provided with an air passage, and an air outlet end of the air passage is in communication with the diversion gap. ### Claim 4 (depends on 3) The lidar base of claim 3, wherein an outer wall of the base body is provided with a groove, the cover plate and the groove define the diversion gap, and the air outlet end of the air passage extends to a bottom wall of the groove. ### Claim 5 (depends on 4) The lidar base of claim 4, wherein an upper edge of the groove is provided with a first inclined surface, and an inner side surface of the cover plate is spaced apart from the first inclined surface to define the air outlet of the diversion gap. ### Claim 6 (depends on 5) The lidar base of claim 5, wherein the outer wall of the base body comprises an arc-shaped surface formed by an upper edge of the first inclined surface extending upwardly in an arc shape, and the arc-shaped surface is recessed inwardly. ### Claim 7 (depends on 5) The lidar base of claim 5, wherein an outer surface of the cover plate is provided with a second inclined surface, and the second inclined surface extends upwardly and obliquely to an upper edge of the cover plate in a direction toward a central axis of the base body. ### Claim 8 (depends on 4) The lidar base of claim 4, wherein a sealing gasket is provided between the cover plate and the base body, the sealing gasket is provided with a notch, and the notch is arranged to keep clear of the groove. ### Claim 9 (depends on 1) The lidar base of claim 1, wherein the diversion gap comprises a plurality of diversion gaps which are arranged at intervals along a circumferential direction of the base body. ### Claim 10 (depends on 9) The lidar base of claim 9, wherein the cover plate is configured in a ring shape, and the cover plate and the base body define the plurality of the diversion gaps. ### Claim 11 (depends on 9) The lidar base of claim 9, wherein the cover plate comprises a plurality of cover plates which are arranged at intervals along the circumferential direction of the base body, and each of the cover plates and the base body define the diversion gap respectively. ### Claim 12 A lidar device, comprising: a lidar assembly which comprises a housing; and a lidar base, comprising: a base body configured to install a lidar assembly; and a cover plate disposed on the base body, and a diversion gap being defined between the cover plate and the base body, wherein an air outlet of the diversion gap is arranged toward the lidar assembly, wherein the housing is installed on the base body. ### Claim 13 (depends on 12) The lidar device of claim 12, wherein the base body is configured in a ring shape to define a central hole, and the central hole is configured to install the lidar assembly, and wherein an extension direction of the diversion gap is toward a central axis of the base body and is inclined upwardly. ### Claim 14 (depends on 12) The lidar device of claim 12, wherein the base body is provided with an air passage, and an air outlet end of the air passage is in communication with the diversion gap. ### Claim 15 (depends on 14) The lidar device of claim 14, wherein an outer wall of the base body is provided with a groove, the cover plate and the groove define the diversion gap, and the air outlet end of the air passage extends to a bottom wall of the groove. ### Claim 16 (depends on 15) The lidar device of claim 15, wherein an upper edge of the groove is provided with a first inclined surface, and an inner side surface of the cover plate is spaced apart from the first inclined surface to define the air outlet of the diversion gap. ### Claim 17 (depends on 16) The lidar device of claim 16, wherein the outer wall of the base body comprises an arc-shaped surface formed by an upper edge of the first inclined surface extending upwardly in an arc shape, and the arc-shaped surface is recessed inwardly. ### Claim 18 (depends on 16) The lidar device of claim 16, wherein an outer surface of the cover plate is provided with a second inclined surface, and the second inclined surface extends upwardly and obliquely to an upper edge of the cover plate in a direction toward a central axis of the base body. ### Claim 19 (depends on 15) The lidar device of claim 15, wherein a sealing gasket is provided between the cover plate and the base body, the sealing gasket is provided with a notch, and the notch is arranged to keep clear of the groove. ### Claim 20 An autonomous vehicle, comprising: a lidar device, comprising: a lidar assembly which comprises a housing; and a lidar base, comprising: a base body configured to install a lidar assembly; and a cover plate disposed on the base body, and a diversion gap being defined between the cover plate and the base body, wherein an air outlet of the diversion gap is arranged toward the lidar assembly, wherein the housing is installed on the base body.