baber/WOPTO huggingface dataset:
Patent KR-102396151-B1 (KR)
IPC: G06Q50/28
Filed: 2020-01-20
Granted: 2022-05-09
Abstract: 본 발명은 소비자가 가정에서 원하는 음식 등을 주문하여 배달받을 수 있도록 하기 위한 배달음식 주문/수거 관리시스템에 관한 기술로서, 주문자 단말로부터 배달주문을 수신하는 주문수신모듈; 상기 배달주문에 상응하는 업체 단말로 상기 배달주문을 전송하며, 상기 업체 단말로부터 전송되는 주문확인신호를 접수하게 되는 주문중계모듈; 상기 주문확인신호에 연동하여 상기 업체 단말과 연결된 알림장치로 주문내역을 배포토록 하는 주문배포모듈; 상기 알림장치를 통해 상기 배달주문이 배포됨과 동시에 해당 배달주문에 관한 정보가 포함된 스캔 가능한 식별코드가 생성되어 프린터로 출력되도록 하는 식별코드 출력모듈; 상기 배달주문이 배달 완료된 이후 상기 주문자 단말에 의한 상기 식별코드에 대한 스캔이 이루어지면 수거정보를 수신하게 되는 수거모듈;을 포함하는 것을 특징으로 한다.
Patent KR-102310195-B1 (KR)
IPC: G06Q50/26
Filed: 2020-01-23
Granted: 2021-10-12
Abstract: 본 발명은 폭염 취약지 분석관리 장치 및 방법에 관한 것으로, 상기 장치는 특정 지역의 온도, 인구 및 시설에 관한 분석데이터를 수집하는 분석데이터 수집부, 상기 분석데이터를 기초로 공간 분석을 통해 도시열섬 지역을 도출하는 열섬지역 도출부 및 상기 도시열섬 지역의 위치를 중심으로 적어도 하나의 취약요인에 관한 공간 분포를 도출하여 도시열섬 취약지역을 결정하는 도시열섬 취약지역 결정부를 포함한다. 따라서, 본 발명은 지역 내 폭염에 취약한 열섬 지역을 도출하고, 취약 계층의 공간 분포를 고려한 시설물 설치와 도시 열환경 설계 및 정책 개발을 지원할 수 있다.
Patent KR-102251322-B1 (KR)
Title: Earphone apparatus and earphone system having the same
Inventor: YUN BUM SIK
IPC: G08B21/18
Filed: 2020-01-29
Granted: 2021-05-12
Abstract: The present invention relates to an earphone apparatus including: an earphone wirelessly connected to a terminal for transmitting voice data; and a cradle configured to accommodate the earphone, and configured to wirelessly receive the voice data transmitted from the terminal or wirelessly connected to another cradle to wirelessly receive voice data from the another cradle. The cradle includes: a first communication unit communicating with the earphone; a second communication unit communicating with an external cradle; and a cradle control unit including the first communication unit and the second communication unit, and the cradle control unit is configured to wirelessly connect the cradle to the another cradle by using the second communication unit to transmit the voice data received from the terminal to the another cradle through the second communication unit when the cradle wirelessly receives the voice data transmitted from the terminal, and wirelessly connect the cradle to the earphone by using the first communication unit to output the voice data transmitted from the another cradle to the earphone through the first communication unit when the cradle is wirelessly connected to the another cradle. Accordingly, a voice signal is shared with an external device.
Patent KR-102112576-B1 (KR)
Inventor: HONG GI JA
IPC: E03F5/04
Filed: 2020-02-17
Granted: 2020-05-19
Abstract: According to an embodiment of the present invention, a grating cover includes: a body (11) formed in a shape of ⊂ when being viewed from the top; a panel (12) installed on the body (11) so that the body (11) is formed in a square when being viewed from the top; a cover (20) which is installed on the body (11) to be opened and closed and of which one side end portion comes in contact with the panel (12) to close the body (11); and an elastic unit (30) installed between the body (11) and the panel (12) to be stretched or reduced so that a distance (W) between the body (11) and the panel (12) is controlled.
Patent KR-102284622-B1 (KR)
Title: Thermo-graphic camera and drone used black ice monitering method
Inventor: SHIN SOO YOUNG
IPC: B64D47/08
Filed: 2020-02-24
Granted: 2021-08-02
Abstract: The present invention relates to a black ice monitoring method using a thermal imaging camera and a drone, comprising the steps of: flying a drone in a predicted first black ice generation region; photographing the first black ice generation region using a first thermal imaging camera mounted on the drone; detecting a first general area of black ice depending on the surface temperature from a first thermal image photographed using the first thermal imaging camera; transmitting a first black ice position information to a plurality of vehicles through a wireless communication network if the first black ice block exceeds a preset area size; and providing the first black ice position information and a first warning alarm, respectively, from the plurality of vehicles. Accordingly, not only can safe driving be induced but also traffic accidents can be prevented.
Patent KR-102345016-B1 (KR)
IPC: G06F21/56
Filed: 2020-02-26
Granted: 2021-12-29
Abstract: 본 개시의 기술적 사상에 의한 일 양태에 따른 랜섬웨어 감지 방법은, 애플리케이션을 획득하는 단계와, 애플리케이션으로부터 코드 및 리소스 데이터를 획득하는 단계와, 코드 및 리소스 데이터에 기초하여 애플리케이션이 요청하는 권한, 코드 및 리소스 데이터에 포함된 문자열을 분석하는 단계와, 분석 결과에 기초하여 애플리케이션이 랜섬웨어를 포함하는지 여부를 판단하는 단계, 및 판단 결과에 기초하여 애플리케이션의 적어도 일부를 랜섬웨어 데이터베이스에 저장하는 단계를 포함할 수 있다.
Patent KR-102171778-B1 (KR)
Inventor: YOO BYUNG MAN
IPC: G06Q10/08
Filed: 2020-03-05
Granted: 2020-10-29
Abstract: The present invention relates to an apparatus and a method for providing a direct transaction mediation service, which receives an order of a marine product before a fishing operation from a customer, and receives a prepayment. The apparatus of the present invention comprises: an order receiving unit for receiving an order of a marine product from a customer; an order transmitting unit for periodically transmitting order receipt content received from the order receiving unit to a corresponding fishery worker terminal; and a fishing operation information managing unit for receiving information related to a fishing operation in accordance with the order receipt content from the fishery worker terminal and providing the information for a customer. According to the present invention, a mediating service platform can be provided, wherein a purchaser directly selects a fishery worker when desiring a purchase of a marine product, and completes a pre-order and a payment before an actual fishing operation of the marine product such that the fishery worker can rapidly and directly deliver a fresh marine product to the purchaser after the fishing operation.
Patent KR-102332946-B1 (KR)
IPC: G01M17/10
Filed: 2020-03-09
Granted: 2021-12-01
Abstract: 본 발명은 철도차량용 구동기어 조립체 무부하 시험장치에 관한 것으로서, 특히, 견인전동기 정비 후 구동기어와 피니언 기어를 현차 상태와 같이 조립된 상태에서 속도, 온도, 진동과 같은 이상 유무를 측정할 수 있도록 하는 철도차량용 구동기어 조립체 무부하 시험장치에 관한 것이다. 구성은 철도차량용 구동기어 조립체 무부하 시험장치로서, 윤축과 상기 윤축의 양단에 형성되는 제1 기어유닛과 윤축에 끼워지는 대기어와 치결합되는 소기어로 이루어지는 제2 기어유닛을 포함하는 구동기어 조립체를 안전하게 안착시킬 수 있도록 상호 간격을 두고 형성되는 지지프레임과, 상기 각 지지프레임의 상면에 형성되며 중앙에 윤축 수용홀이 형성되고 상기 윤축 수용홀의 내측으로는 부시와 베어링이 형성되는 윤축 고정지그로 이루어지는 구동기어 조립체 안착부와; 상기 구동기어 조립체 안착부의 일측에 형성되어 상기 구동기어 조립체 안착부를 통해 안착되는 구동기어 조립체의 흔들림을 방지하도록 회전동작에 의해 개폐되는 고정덮개와, 상기 고정덮개와 결합되어 신축동작하는 피스톤 로드를 갖는 실린더로 이루어지는 구동기어 조립체 고정수단과; 상기 구동기어 조립체 안착부의 타 일측에 형성되어 윤축의 양단에 형성되는 제1 기어유닛과, 상기 제1 기어유닛의 내측으로 형성되는 차륜과, 상기 차륜의 내측에 형성되는 제2 기어유닛을 포함하는 구동기어 조립체를 회전시키도록 동력을 제공하는 전동기와 상기 전동기의 축에 결합되는 원동풀리와 기어박스의 기어 축에 결합되는 종동풀리를 포함하여 이루어지는 구동수단; 을 포함한다.
Patent KR-102250334-B1 (KR)
Title: Method for repairing carbon fiber reinforced plastic member
Inventor: YOON MAN SEOK
IPC: B29K267/00
Filed: 2020-03-23
Granted: 2021-05-10
Abstract: Disclosed is a method for repairing a carbon fiber reinforced plastic member. In one embodiment, the method for repairing the carbon fiber reinforced plastic member comprises the following steps of: primarily polishing a surface of a carbon fiber reinforced plastic (CFRP) member by using a sandpaper; coating a curable putty composition to the surface of the CFRP member, and curing the same to form a coating layer; and heat-treating the CFRP member on which the coating layer is formed at more than 80°C and less than 100°C, wherein the curable putty composition contains a transparent resin, a curing agent, and a solvent.
Patent KR-102227860-B1 (KR)
Title: Ceramic composites used for 3D printing for manufacturing of building exterior materials and performance improvement method of building exterior materials printed using this
Inventor: LEE BONG CHUN
IPC: C04B18/08
Filed: 2020-03-26
Granted: 2021-03-15
Abstract: The present invention relates to a ceramic composite composition for three-dimensional (3D) printing for manufacturing building exterior materials, and a method for increasing performance of the building exterior materials printed by using the same. More specifically, according to the present invention, the ceramic composite composition does not use conventional cement and comprises any one of a first mixture of a binder, in which fly ash is added to fine powder of blast furnace slag, and powdered sodium silicate added to the binder, and a second mixture of a binder, in which fly ash is added to the powder of blast furnace slag, powdered sodium silicate added to the binder, and powdered calcium hydroxide added thereto. Fly ash is added in an amount of about 20 to about 30 parts by weight with respect to 100 parts by weight of the fine powder of blast furnace slag, and sodium silicate is added in an amount of about 15 to about 25 parts by weight with respect to on 100 parts by weight of the binder. Accordingly, an atypical building exterior material can be manufactured by using a powder stacking-type 3D printer and performance such as water absorption and compressive strength can be increased in the manufactured building exterior material.
Patent KR-102194036-B1 (KR)
Inventor: AHN GU YONG
IPC: E02B3/06
Filed: 2020-04-14
Granted: 2020-12-22
Abstract: The present invention relates to a wave dissipating block which has an excellent wave dissipating effect, can be mounted in various methods, and has an excellent interlocking function, and to a marine structure using the same. The wave dissipating block of the present invention comprises: a central body (10) substantially having a shape of a regular tetrahedron (11); and four angular units (20) including vertices (111) of the regular tetrahedron (11) and extending in an outward direction from a volumetric center (13) of the regular tetrahedron (11). Each of the angular units (20) has a cross-sectional area gradually increasing from a centripetal end portion (31) toward a centrifugal end portion (33). The central body (10) has a protrusion (15) protruding outward in a centrifugal direction from a surface (117) of the regular tetrahedron (11) of the central body (10). A side surface of each of the angular units (20) has a plurality of planar triangles, the protrusion (15) further protrudes from an area center (119) of the surface (117) toward a side (113), and the protrusion (15) near the side has a concave depression (16) extending in the direction perpendicular to the side.
Patent KR-102242846-B1 (KR)
Title: Special material for optical color sorter Downhill guide chute
Inventor: PARK KI SOO
IPC: B07C5/36
Filed: 2020-05-07
Granted: 2021-04-22
Abstract: The present invention relates to a new material downhill guide chute device for an optical color sorter, capable of increasing the stability and precision of a downhill transfer of a material during use by improving characteristics of a guide chute guiding a material to slide from top to bottom by its self-load in an optical color sorter, while making a large contribution to a reduction in processes and a cost loss caused by repairing and replacement by considerably reducing the wear rate of the chute. In other words, in regard to an optical color sorter, the material downhill guide chute device (20) comprises: a downhill guide plate (100) having a predetermined area and thickness and having a material friction surface provided on a front side to guide a material to slide from top to down by its self-load; and a guide plate fixing means formed on both sides of the downhill guide plate (100) or in the bottom of the same to substantially and stably fix and support the downhill guide plate (100) in the optical color sorter, wherein the downhill guide plate (100) is made of tempered glass having compression stress in a part close to the surface of the glass and considerable tensile stress therein due to compressive residual stress applied to the surface, and having strength which is far more improved than ordinary glass while being hardly broken.
Patent KR-102233076-B1 (KR)
Title: Protection overbreak propulsion machine
Inventor: GI YEONG UHM
IPC: E21D9/06
Filed: 2020-05-12
Granted: 2021-03-29
Abstract: The present invention relates to an anti-overbreak excavating propulsion machine, which maintains a front part provided with a cutter head at a constant pressure, can prevent water, soil, sludge, etc. from being introduced to a rear part from the front part, and can stably perform a construction while reducing excavating costs. The anti-overbreak excavating propulsion machine of the present invention comprises: a front part having a cutter head rotatably installed therein; a rear part having a motor and a decelerator for driving the cutter head; and a sludge and skid barrier for partitioning the front and rear parts. The sludge and skid barrier wall includes a blocking plate for partitioning the front and rear parts, and a pair of fixing bands for fixing the blocking plate.
Patent KR-102201427-B1 (KR)
Inventor: KIM SUN BONG
IPC: E03F5/04
Filed: 2020-05-14
Granted: 2021-01-11
Abstract: Provided is a permeable grating for preventing dirt from entering and blocking odors. The permeable grating comprises: an outer frame including a frame to be seated on an upper part of a storm water drain; a plurality of I-bars formed inside the outer frame to have a predetermined interval, and arranged in parallel in the longitudinal direction of the outer frame; cross bars formed through the I-bars to traverse the I-bars, and extending in the longitudinal direction of the outer frame; V-bars formed in the space between the predetermined I-bars among the plurality of I-bars, and continuously arranged in a zigzag pattern in a direction perpendicular to the longitudinal direction of the outer frame; a lower support plate formed under the outer frame, and having a plurality of permeation spaces in which a grid shape is repeatedly arranged; an inner mesh disposed in the space between the lower support plate and the plurality of I-bars, and having a hole smaller than the permeation space of the lower support plate; and a filling material that is filled in the space between the I-bars, but not filled in the space between the V-bars. The filling material includes elvan gravel, rubber chips, and cork chips. The length of the I-bars in a heightwise direction is smaller than that of the outer frame in a heightwise direction. The length of the V-bars in a heightwise direction is smaller than that of the I-bars in a heightwise direction.
Patent KR-102405609-B1 (KR)
Title: 조적조 건물 이전설치방법
IPC: E04G23/06
Filed: 2020-06-02
Granted: 2022-06-03
Abstract: 본 발명은 일 장소에 위치한 건물을 복수의 건물편으로 절단하는 건물 절단 단계, 건물편을 이양하는 이양 단계, 및 타 장소에 복수의 건물편을 조립하는 조립 단계를 포함하며, 조립 단계는, 건물편을 설치하는 설치 단계, 및 설치된 건물편의 내측면을 덮는 내벽을 배치하는 보강 단계를 포함하여, 일 장소에 배치된 건물을 타 장소로 안정적으로 이전하면서, 구조적 보강을 할 수 있다.
Patent KR-102420043-B1 (KR)
IPC: G09F9/30
Filed: 2020-06-19
Granted: 2022-07-13
Abstract: 디스플레이 장치가 개시된다. 본 디스플레이 장치는, 영상을 표시하는 플렉서블 디스플레이부, 플렉서블 디스플레이부의 화면 크기를 가변하는 구동부, 및, 플렉서블 디스플레이부에서 표시될 컨텐츠의 크기에 대응되는 화면 크기로 컨텐츠에 대응되는 영상이 표시되도록 구동부를 제어하는 제어부를 포함한다.
Patent KR-102302548-B1 (KR)
Title: Preparing method of surface-treated metal nanowire
Inventor: CHOI DONCHUL
IPC: B22F9/24
Filed: 2020-06-29
Granted: 2021-09-16
Abstract: The present invention is to manufacture a metal nanowire with improved surface properties. A method for manufacturing a surface-treated metal nanowire according to the present invention comprises: a) mixing a first metal precursor, a reducing agent, a capping agent and a first solvent, and performing solvothermal synthesis to obtain a metal nanowire; and b) heat-treating the obtained metal nanowire in a reducing atmosphere.
Patent KR-102209201-B1 (KR)
IPC: A61P25/00
Filed: 2020-06-29
Granted: 2021-02-01
Abstract: 본 발명은 옥시이미노메틸벤젠(Oxyiminomethylbenzene) 유도체로서, 일주기 생체시계 분자 네트워크의 전사 조절인자인 CRYs의 활성의 억제 및 CLOCK:BMAL1 이합체의 활성 강화를 통해 일주기 생체리듬의 진폭을 강화하고, 주기를 안정화 시키는 옥시이미노베틸벤젠 유도체에 관한 것이다.
Patent KR-102157990-B1 (KR)
Title: Method and system for recognizing vehicle number plate using neural network
Inventor: LEE HONG KI
IPC: G06N3/04
Filed: 2020-06-29
Granted: 2020-09-21
Abstract: A vehicle license plate recognition method using a neural network that is performed by a vehicle license plate recognition device including a processor and a memory to recognize characters on a vehicle license plate comprises the steps of: receiving, by a processor, an image including a license plate area of a vehicle; recognizing, by the processor, a character area classified in the license plate area of the vehicle; outputting, by the processor, a first output feature map by performing a first convolution operation on an image including the classified character area; outputting, by the processor, a second output feature map by applying sampling to the output first output feature map; outputting, by the processor, a third output feature map by performing a second convolution operation on the second output feature map; outputting, by the processor, a fourth output feature map by applying sampling to the output third output feature map; and recognizing, by the processor, characters in the classified character area by using a fully connected layer for fully connecting the output fourth output feature map and a predetermined feature map that is defined as a numerical expression of the characteristics of characters, and divides the character area into certain areas to be defined as the number of pixels of characters included in each area, the sum of white pixels or black pixels placed in several horizontal lines drawn according to the height of the characters, or the sum of while pixels or black pixels placed in several vertical lines drawn according to the width of the characters.
Patent KR-102245214-B1 (KR)
IPC: G02B6/02
Filed: 2020-06-29
Granted: 2021-04-28
Abstract: 본 발명은 광섬유 격자 센서의 제조 방법에 관한 것으로, 해결하고자 하는 과제는 일정한 간격의 다중형 FBG 센서를 제작하며, FBG 센서의 단부 피복의 일부를 제거하여 FBG 센서의 전기 회로 부분 및/또는 커넥팅 접합 부분에 요구되는 부분에 대한 작업이 용이하도록 하는데 있다. 
일례로, 코팅 생성부를 이용하여, 다중형 FBG 센서에 경화성 코팅 물질로 피복을 형성하는 다중형 FBG 센서 피복 형성 단계; 및 코팅 제거부를 통해 상기 피복 중 미리 결정된 위치에 상기 피복의 일부를 제거하여 상기 피복이 일부분 제거된 다중형 FBG 센서를 형성하는 다중형 FBG 센서 피복 부분 제거 단계를 포함하는 광섬유 격자 센서의 제조 방법을 개시한다.
Patent KR-102499783-B1 (KR)
IPC: A41D13/11
Filed: 2020-07-22
Granted: 2023-02-14
Abstract: 개시되는 간이 방호복은, 착용자의 머리, 얼굴 및 목 부분을 둘러 감싸도록 제공되며, 전방 측에는 착용자의 시야 확보를 위한 투시창이 마련되는 후드; 후드의 하부와 이어지게 형성되며, 착용자의 어깨, 몸통 및 팔을 둘러 감싸면서 내부에 공기층이 형성되게 하는 몸통부; 및 착용자의 호흡으로 배출되는 이산화탄소가 몸통부의 하부 측에 포집 및 저장할 수 있게 안내하는 가이드 관체;를 포함하되, 몸통부의 하부 측에 포집 및 저장된 이산화탄소는 몸통부의 하부를 통해 연기 및 유독가스가 유입되지 않게 하면서 공기층 내 공기를 밀어올려 착용자가 호흡할 수 있게 한다.
Patent KR-102240390-B1 (KR)
Title: Smart Integrated Control System for Integrated Control of Complex Valve and Fan Coil Unit and Its Operation
Inventor: LEE DONG SUB
IPC: G06N3/02
Filed: 2020-07-30
Granted: 2021-04-14
Abstract: According to one embodiment of the present invention, a smart integrated control system includes: a plurality of fan coil units individually connected to pipes supplying and returning water for cooling and heating, outputting cold wind and hot wind with the water for cooling and heating in accordance with an external signal, and automatically controlling the volume and velocity of the cold wind and the hot wind in accordance with a surrounding environment change; a variable complex valve variably controlling a return amount of the cold or hot water discharged from the pipes based on a valve control signal; and a smart integrated control terminal controlling the plurality of fan coil units individually and by group unit such that a surrounding environment (temperature, humidity) reaches environment setting information designated by a user, and generating and providing the valve control signal for automatically controlling the return amount of the complex valve in accordance with the operation condition of the plurality of controlled fan coil units. Therefore, the present invention is capable of monitoring a surrounding environment state in accordance with an operation condition.
Patent KR-102251308-B1 (KR)
Title: Haptic controller and system and method for providing haptic feedback using the same
Inventor: KO GI NAM
IPC: G06F3/0346
Filed: 2020-08-05
Granted: 2021-05-12
Abstract: An objective of the present invention is to provide a haptic controller which may three-dimensionally provide various stiff senses including gripping or pressing an object to a user gripping the haptic controller according to interaction between an object and contents on a monitor screen, and may pass information such as contact or bump with objects which is not a situation of gripping or holding the objects or generation information of a specific event through vibration, and a system and a method for providing haptic feedback using the same. A method for providing haptic feedback by a system for providing haptic feedback including a haptic controller having a first haptic controller and a second haptic controller; and a main terminal to exchange a signal through wire/wireless communication with the haptic controller, the method comprises: detecting a first position of the first haptic controller and a second position of the second haptic controller through the wire/wireless communication by the main terminal; comparing the first position and the second position with a reset position, respectively by the main terminal; and trasmitting first haptic feedback of intensity stornger than a reset intensity to a hantic controller located within a threhold length by the main terminal when there is a hantic controller located within a threshold length of the reset position, and trasmitting first haptic feedback of intensity weaker than the reset intensity to a hantic controller located beyond a threhold length by the main terminal when there is a hantic controller located beyond a threshold length of the reset position.
Patent KR-102429420-B1 (KR)
Title: 기주 공명관을 이용한 두더지 퇴치기
IPC: H02S10/00
Filed: 2020-08-05
Granted: 2022-08-03
Abstract: 본 발명은 기주 공명관을 이용한 두더지 퇴치기에 관한 것이다. 
본 발명은 지중에 삽입 설치되는 본체(10)와, 상기 본체(10) 상부에 개폐 가능하게 결합되는 커버(20)와, 상기 커버에 형성되는 태양전지 발전패널(30)과, 상기 태양전지 발전패널의 출력에 의해 충전되어 전류를 공급하는 전원공급부(40)와, 상기 전원공급부(40)와 전기적으로 연결되어 음파의 발진 간격, 발진 시간, 발진 주파수를 자동으로 변경 가능하게 하는 제어수단을 구비하는 회로부(60)와; 상기 회로부(60)에 의해 발진되는 음파를 출력하는 음파출력수단(70)을 구비하는 두더지 퇴치기에 있어서, 상기 음파출력수단(70)에서 출력되는 음파에 공명작용이 발생하도록 본체(10)내에서 본체(10)의 길이 방향을 따라 배치되는 공명관(80)을 포함하여 음파를 증폭시키고, 공명관 내부 온도  변화에 따라 진동의 주파수를 변화시켜 저전력으로 고효율의 고음을 발생시킬 수 있게 된다.
Patent KR-102283857-B1 (KR)
Title: Air vent head with multiple chambers
Inventor: PARK SUN BOG
IPC: B63J2/08
Filed: 2020-08-06
Granted: 2021-07-30
Abstract: The present invention relates to an air vent head with multiple chambers and, more specifically, to an air vent head for a ship. The air vent head for a ship comprises four chambers (200) provided inside a body part (100), thereby minimizing the height of the air vent head. High efficiency can be achieved by designing the cross-sectional area of an air intake and exhaust space in an optimal condition. Respective buoys are provided in a plurality of chambers to reduce the overall height and volume of the air vent head so that the cost of initial production can be reduced and an installation location can be easily secured. The air vent head can flexibly respond to deformation, cracking, or surface damage. An impact, the elasticity of a rubber packing provided therein, and the rising force of the buoys maximize a repulsion action so that watertightness can be increased and the comprehensive advantages of watertight and flow characteristics and reverse/discharge flow are highlighted. Moreover, a double protective cover is provided outside the air vent head to protect the air vent head from an external impact that can occur inadvertently, so that stability can be increased.