# US 2021/0276464 A1 · Ventilation device for slim vehicular seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276464 A1 - Document ID: US20210276464A1 - Status: Published application - Kind: A1 - Application number: 16/932,577 - Filed: 2020-07-17 - Published: 2021-09-09 - Earliest claimed: 2020-03-04 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Tae Hee Won; Gil Ju Kim; Jung Sang You; Chan Ho Jung; Ju Yeol Kong; Seon Chae Na; Kwang Bin Im; Hyuk Kim; Seung Gyu Hong - Web page: https://patentgrep.com/patent/US20210276464A1 ## CPC - B60N 2/5657: {blown towards the seat surface} - B60N 2/70: Upholstery springs {; Upholstery} - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR ## Abstract A ventilation device for a slim vehicular seat configured for easily ensuring an airflow path in the slim seat and of reducing a thickness of the slim seat to a desired extent, may include a blowing duct, which extends from a lower portion of a seat cushion, is connected to the lower end portion of a foam pad to greatly reduce the width of the space between the foam pad and a back board, making it possible to easily manufacture a slim seat in which the overall thickness of a seat back is minimized. ## Claims ### Claim 1 A ventilation device for a vehicular seat, wherein a blowing hole is formed in a lower portion of a foam pad of a seat back, wherein a blowing duct, which extends from a lower portion of a seat cushion, is supported by a seat back lower frame, and wherein an upper end portion of the blowing duct is airtightly coupled to the blowing hole in the foam pad, thereby facilitating a back board to be mounted on a rear surface of the foam pad as close thereto as possible, and wherein the seat back lower frame is provided in a front surface of the seat back lower frame with a support groove, in which the blowing duct is fitted and supported. ### Claim 2 (canceled) ### Claim 3 (depends on 1) The ventilation device of claim 1, wherein the seat back lower frame is provided with a support hole formed through the seat back lower frame, and wherein the blowing duct is fitted in and supported by the support hole. ### Claim 4 (depends on 1) The ventilation device of claim 1, wherein the foam pad is provided with an air distribution path in a front surface of the foam pad, and wherein the air distribution path is formed to extend upwards and fluidically-communicate with the blowing hole. ### Claim 5 (depends on 1) The ventilation device of claim 1, further including a support plate mounted on the foam pad, wherein the support plate is attached to an external peripheral surface of the blowing hole to support the upper end portion of the blowing duct. ### Claim 6 (depends on 5) The ventilation device of claim 5, wherein the support plate includes an opening, and wherein the upper end portion of the blowing duct is engaged to the opening of the support plate. ### Claim 7 (depends on 5) The ventilation device of claim 5, further including an upper fixing plate mounted on an upper portion of the support plate to lock and fix the upper end portion of the blowing duct. ### Claim 8 (depends on 7) The ventilation device of claim 7, wherein a lower portion of the upper fixing plate is provided with a locking stepped portion, and wherein a periphery of the upper end portion of the blowing duct is provided with a locking flange, which is fitted and locked in the locking stepped portion. ### Claim 9 (depends on 5) The ventilation device of claim 5, further including a lower fixing plate mounted on a lower portion of the support plate to lock and fix the upper end portion of the blowing duct. ### Claim 10 (depends on 9) The ventilation device of claim 9, wherein an upper portion of the lower fixing plate is provided with a locking stepped portion, and wherein a periphery of the upper end portion of the blowing duct is provided with a locking flange, which is fitted and locked in the locking stepped portion. ### Claim 11 (depends on 5) The ventilation device of claim 5, further including an upper fixing plate and a lower fixing plate, which are mounted on an upper portion and a lower portion of the support plate, respectively to lock and fix the upper end portion of the blowing duct. ### Claim 12 (depends on 11) The ventilation device of claim 11, wherein a lower portion of the upper fixing plate is provided with a first locking stepped portion and an upper portion of the lower fixing plate is provided with a second locking stepped portion, and wherein a periphery of the upper end portion of the blowing duct is provided with a locking flange, which is fitted and locked in the first and second locking stepped portions. ### Claim 13 (depends on 1) The ventilation device of claim 1, wherein the blowing duct, which extends from the lower portion of the seat cushion, includes a first blowing duct and a second blowing duct, which extend through the seat back lower frame, are firstly bent toward respective internal spaces in seat back side frames, are secondly bent toward the blowing hole formed in the rear surface of the foam pad, and are coupled to the blowing hole. ### Claim 14 (depends on 13) The ventilation device of claim 13, wherein the first and second blowing ducts, which extend through the seat back lower frame and are firstly bent toward internal spaces in the seat back side frames, are mounted in spaces behind bolsters of the foam pad. ### Claim 15 (depends on 13) The ventilation device of claim 13, wherein the first and second blowing ducts are coupled to the seat back side frames via support rings. ### Claim 16 A ventilation device for a vehicular seat, wherein a blowing hole is formed in a lower portion of a foam pad of a seat back, wherein a blowing duct, which extends from a lower portion of a seat cushion, is supported by a seat back lower frame, and wherein an upper end portion of the blowing duct is airtightly coupled to the blowing hole in the foam pad, thereby facilitating a back board to be mounted on a rear surface of the foam pad as close thereto as possible, and wherein the foam pad is provided with an air distribution path in a front surface of the foam pad, and wherein the air distribution path is formed to extend upwards and fluidically-communicate with the blowing hole.