baber/WOPTO huggingface dataset:
Patent JP-2023142638-A (JP)
Title: cylinder head
Inventor: YAMASHITA SHOHEI
IPC: F02B19/10
Filed: 2022-03-25
Abstract: To disclose a cylinder head which can promote lean burn and high EGR.SOLUTION: A pocket-shaped sub-chamber 11 is opened in a center part of a downward recess 6 which is formed at a cylinder head 4. An outlet 14a of an auxiliary intake port 14 and an ignition plug 20 are arranged at the sub-chamber 11 in a state of being sorted to fore-and-aft both sides with an axial core O sandwiched therebetween. Since an auxiliary air-fuel mixture injected from the auxiliary intake port 14 forms a swirl flow in the sub-chamber 11, a strong initial flame can be created by suppressing a diffusion of fuel. Since the sub-chamber 11 intrudes upward from an upper bottom face of the downward recess 6, a creation function of a tumble flow in a cylinder bore cannot be obstructed. Accordingly, stratified combustion in a main combustion chamber (downward recess 6) can be ensured.SELECTED DRAWING: Figure 1
Patent JP-2023143091-A (JP)
Title: Virtual item control system, virtual item control method, and virtual item control program
Inventor: MATSUI KENTARO
IPC: G06F21/62
Filed: 2022-03-25
Abstract: To properly control the right of another user to operate a virtual item.SOLUTION: A virtual item control system includes at least one processor. The at least one processor is configured to: acquire information identifying a person accessing a room which is a predetermined virtual reality space, and information identifying an owner of a virtual item disposed in the room; and execute control processing to control the right of the person to operate the virtual item disposed in the room, on the basis of whether the information identifying the owner is included in the information identifying the person.SELECTED DRAWING: Figure 4
Patent JP-2023144876-A (JP)
Title: cell module
Inventor: SAKAI MASANOBU
IPC: H01M50/569
Filed: 2022-03-28
Abstract: To provide a cell module improved in productivity.SOLUTION: Provided is a cell module including: a battery pack in which a plurality of cells are stacked and connected; a cell circuit measuring the voltage and internal resistance of the cell; an insulation board fixed to the battery pack and mounting the sensor circuit thereon; and a terminal cover that comprises an electrical insulation material, that is a member covering an input/output terminal of the battery pack and a power terminal of the sensor circuit, and that can be attached to and detached from the battery pack. The insulation board is provided with a sensor side conductor connected to the power terminal of the sensor circuit, and the terminal cover includes a battery pack side conductor electrically connecting between the input/output terminal of the battery pack and sensor side conductor. The battery pack side conductor comprises a conductive part formed on a terminal cover inner surface and connected to the sensor side conductor, and a connection part extended from the conductive part and electrically connected to the input/output terminal of the battery pack.SELECTED DRAWING: Figure 1
Patent JP-2023144973-A (JP)
Title: Self-submerging type warning flare
Inventor: HAYAKAWA YOSHIHITO
IPC: B63C9/20
Filed: 2022-03-28
Abstract: To provide a self-submerging type warning flare capable of emitting smoke over a long period of time while suppressing enlargement in size.SOLUTION: A self-submerging type warning flare 2 includes a wooden columnar body 10 including an ignition hole 14. A bottom cover 20 to be weight is attached to a bottom unit of the columnar body 10. A plurality of ignition powder tubes 200 serially connected by a fuse 50 and an ignition device 100 for igniting the leading ignition powder tube 200 are stored inside the columnar body 10. A plurality of cylindrical storage spaces 12 communicated with the ignition hole 14 for storing the plurality of ignition powder tubes 200 are formed in the columnar body 10. The plurality of cylindrical storage spaces 12 are serially communicated by having adjacent cylindrical storage spaces 12 coupled with each other by a communicating hole 16. A self-submerging device 30 is provided in between the cylindrical storage space 12 at beginning of the line and outside of the columnar body 10. The ignition powder tubes 200 lit last in lighting order is stored in the cylindrical storage space 12 where the self-submerging device 30 is provided.SELECTED DRAWING: Figure 3
Patent JP-2022088531-A (JP)
Title: Vaporization device system and method
IPC: A24F40/40
Filed: 2022-03-29
Abstract: PROBLEM TO BE SOLVED: To provide a system and a method to generate an inhalable vapor in an electronic vaporization device. 
     SOLUTION: A vaporization device may generate a vapor with one or more defined characteristics. In some cases, the vapor may have a predetermined aerosol number density and/or a predetermined average aerosol particle diameter. The vaporization device may generate a vapor from a vaporizable material. In some cases, the vaporizable material may be a liquid material housed in a cartridge. The vaporization device may include a rechargeable power storage device. 
     SELECTED DRAWING: Figure 7B 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023138210-A (JP)
Title: Resin molding mold
Inventor: SAI SEIICHI
IPC: B29C33/42
Filed: 2022-03-17
Abstract: To provide a resin molding mold that can be used for two-color molding to obtain a resin molded product that improves bonding with a resin layer.SOLUTION: A resin molding mold 1 has a protruding member 11 having a large cross-sectional area at a tip formed on at least one surface of a core 1A and a cavity 1B of the resin molding mold.SELECTED DRAWING: Figure 1
Patent JP-2023154210-A (JP)
Title: air conditioning system
Inventor: KANI YOSHIMIKI
IPC: F24F5/00
Filed: 2022-04-06
Abstract: To provide an air conditioning system that comprises two heat sources, and in which while cooling operation is performed by one air conditioning device, heating operation or drying operation can be performed by another air conditioning device.SOLUTION: An air conditioning system 1A comprises a first heat medium circuit 40 capable of circulating a heat medium via a flow passage 31a of the heat exchanger 31 between a first heat source 10 and a first air conditioning device 3, a second heat medium circuit 50 capable of circulating the heat medium between a second heat source 20 and a flow passage 31b of the heat exchanger 31, a third heat medium circuit 60 capable of circulating the heat medium between the second heat source 20 and a second air conditioning device 4, and a valve device 54 capable of blocking the circulation of the heat medium between the second heat source 20 and the flow passage 31b of the heat exchanger 31.SELECTED DRAWING: Figure 1
Patent JP-2022082820-A (JP)
Title: Pharmaceutical compositions
IPC: A61K47/10
Filed: 2022-04-11
Abstract: PROBLEM TO BE SOLVED: To provide pharmaceutical compositions comprising pemafibrate or a salt thereof or solvates thereof and having excellent homogeneity. 
     SOLUTION: Provided are pharmaceutical compositions comprising the following ingredients (A) and (B) and being a solid preparations. The ingredient (A) is a pemafibrate or a salt thereof or solvates thereof. The ingredient (B) is one or more selected from a group consisting of the following ingredients (B-1) and (B-3) to (B-6): (B-1) cellulose ether; (B-3) povidone; (B-4) silicic acid compound; (B-5) multivalent alcohol; and (B-6) alkyl sulfate ester. 
     SELECTED DRAWING: None 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023157251-A (JP)
Title: Synthetic fiber manufacturing method, synthetic fiber, unwoven fabric, and surface modification method for synthetic resin
Inventor: ITO TOMOMICHI
IPC: D06M15/263
Filed: 2022-04-14
Abstract: To provide a novel surface modification technique not needing post-processing in a synthetic resin, and to provide a method for manufacturing a synthetic fiber using the technique, a synthetic fiber, an unwoven fabric, and a surface modification method for a synthetic resin.SOLUTION: A method for manufacturing a synthetic fiber comprises a step of manufacturing a synthetic fiber made of a solute component by gasifying a solvent from a solution. The solution includes a third component coupling a first component having a nature of easy dissolving in the solvent with a second component having a nature of difficult dissolving in the solvent. The solvent is gasified from the solution so that the third component is localized near the fiber surface and the first component functions as an anchor to prevent separation of the second component from the fiber surface.SELECTED DRAWING: Figure 15
Patent JP-2022087292-A (JP)
Title: Game machine
IPC: A63F7/02
Filed: 2022-04-14
Abstract: PROBLEM TO BE SOLVED: To provide a game machine capable of improving properties of amusement. 
     SOLUTION: In a pachinko machine 10, on the basis of an entrance of a game ball to an upper operation port or a lower operation port, reservation information for special symbols is acquired. On the basis of the reservation information, a winning/losing determination for the special symbols is performed. The reservation information is stored with a prescribed number of pieces of reservation information set in advance as an upper limit. If a plurality of pieces of reservation information is being stored, the winning/losing determination is configured to be performed one by one. Further, as game states, a high probability state and a low probably state are set, the high probability state as a so-called a probability variable state being likely to result in a big win in the winning/losing determination for the special symbols and the low probability state being unlikely to result in the big win. In the pachinko machine 10, a setting to the high probability state is set according to the number of storages of the pieces of reservation information. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022176890-A (JP)
Title: Spherical particles comprising carbon nanomaterial-graft-polymer and methods of production and uses thereof
Inventor: VALERIE M FARRUGIA
IPC: C08L101/00
Filed: 2022-04-15
Abstract: To provide highly spherical particles (also referred to as CNM-g-polymer particles) that comprise carbon nanomaterial-graft-polymer (CNM-g-polymer).SOLUTION: Highly spherical particles may comprise a thermoplastic polymer grafted to a carbon nanomaterial (CNM-g-polymer), wherein the particles have an aerated density of about 0.5 g/cm3 (preferably about 0.55 g/cm3) to about 0.8 g/cm3. The CNM-g-polymer particles may be useful in a variety of applications including selective laser sintering additive manufacturing methods.SELECTED DRAWING: Figure 1
Patent JP-2023157710-A (JP)
Title: Fitting
Inventor: SUDO KATSUHITO
IPC: E05C1/08
Filed: 2022-04-15
Abstract: To provide a fitting with which a door body for an entrance can be easily opened.SOLUTION: A fitting 1 includes a door body 3 for an entrance to which a handle 26 is attached and which can be opened and closed, a facing portion 4 disposed opposite to a door end side end surface 3a of the door body 3 when the door body 3 is in the closed position, and a latch portion 7 provided on the door body 3 or the facing portion 4 and not interlocked with the handle 26.SELECTED DRAWING: Figure 3
Patent JP-2022090128-A (JP)
Title: Tenodesis implants and tools
IPC: A61F2/08
Filed: 2022-04-26
Abstract: PROBLEM TO BE SOLVED: To provide methods and devices for anchoring a ligament or tendon to bone. 
     SOLUTION: In one embodiment, a biceps brachii tenodesis mechanism is provided and includes a sheath inserter tool, an expandable sheath configured to couple to the sheath inserter tool, an expander inserter tool, and an expander configured to couple to the expander inserter tool. The sheath inserter tool is configured to advance the expandable sheath, with a tendon disposed therearound, into a bone hole, and the expander inserter tool is configured to advance the expander through an outer shaft of the sheath inserter tool and to drive the expander into the sheath. The expander is configured to be received within a lumen extending at least partially through the expandable sheath to thereby expand the sheath. In this way, the mechanism delivers the tendon or ligament into the bone hole and locks the sheath and tendon within the bone hole. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022119819-A (JP)
Title: Photosensitive resin composition
IPC: H05K1/03
Filed: 2022-05-12
Abstract: PROBLEM TO BE SOLVED: To provide a photosensitive resin composition having excellent resolution which can form a cured product having a low average linear thermal expansion coefficient and forms a film excellent in appearance, flexibility and crack resistance when formed into a film shape. 
     SOLUTION: There is provided a photosensitive resin composition which comprises (A) a resin containing an ethylenically unsaturated group and a carboxyl group, (B) an inorganic filler having an average particle diameter of 0.5 μm or more and 2.5 μm or less and a specific surface area of 1.4 m 2 /g or more and 10 m 2 /g or less, (C) a photopolymerization initiator and (D) an epoxy resin, wherein the content of (B) component is 60 mass% or more and 85 mass% or less, when the total slid content of the photosensitive resin composition is defined as 100 mass%. 
     SELECTED DRAWING: None 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023169905-A (JP)
Title: Ｐｍモータの温度推定装置
IPC: H02P21/16
Filed: 2022-05-18
Abstract: 【課題】トルクセンサ、電圧センサ等を追加することなく容易にＰＭモータの抵抗温度、磁石温度を推定することができるＰＭモータの温度推定装置を提供する。【解決手段】インバータ２により駆動されるＰＭモータ１に流れる電流を検出したモータ検出電流と、前記モータ１の回転数を検出して求めた角周波数と、前記モータ検出電流が電流指令と等しくなるように電流制御器３４によって電流制御を行って得られた電圧指令とを入力として、設計したモータモデル６１を用いてモータモデルの電流を計算し、そのモータモデル電流と前記モータ検出電流の差をなくすように、モータモデル６１の巻線抵抗、磁石磁束、インダクタンスを、パラメータ調整器６３によって調整することにより、モータの巻線抵抗、磁石磁束を含むモータパラメータを同定するパラメータ同定部６０と、同定した巻線抵抗、磁石磁束から抵抗温度、磁石温度を推定する温度計算部６８と、を備えた。【選択図】 図１
Patent JP-2023048095-A (JP)
Title: hand dryer
IPC: A61L9/16
Filed: 2022-05-18
Abstract: PROBLEM TO BE SOLVED: To provide a hand dryer having improved quality. 
     SOLUTION: A hand dryer includes a housing having an inner surface and an opening for a user inserting the hands into a drying space enclosed by the inner surface, a blowout port provided on the inner surface for blowing out air in the dying space, a suction port provided on the inner surface for sucking the air in the drying space, a flow passage part for connecting the blowout port and the suction port, and an air blowing part provided at the flow passage part, causing the suction port to such the air and causing the blowout port to blow out at least a part of the air sucked by the suction port via the flow passage part, the air blowing part driven by one motor. 
     SELECTED DRAWING: Figure 7 
     COPYRIGHT: (C)2023,JPO&INPIT
Patent JP-2023172395-A (JP)
Title: 棒体連結具
IPC: F16B2/06
Filed: 2022-05-23
Abstract: 【課題】基部の形状または取付対象物の自由度を高めることができるとともに取付作業負担も軽減することができる棒体連結具を提供する。【解決手段】棒体連結具１００は、連結具本体１０１と宛がい体１２０とで構成されている。連結具本体１０１は、棒体保持部１０２、アーム部１０５および取付部１１０を備えている。棒体保持部１０２は、棒体１０の外周部に嵌るＵ字状に形成されており、一方の端部にのみアーム部１０５を介して取付部１１０が設けられているとともに、他方の端部に延長部１０３を介して凹状嵌合部１０４が形成されている。アーム部１０５には、ナット１０８が設けられている。取付部１１０は、アーム部１０５の先端部に対して屈曲して延びて形成されている。宛がい体１２０は、板状に形成されており、ナット１０８に嵌合するボルト１０７が貫通する挿し込み部１２１および凹状嵌合部１０４に嵌合する第２連結具孔１２２が形成されている。【選択図】 図１
Patent JP-2023172460-A (JP)
Title: 情報処理装置及び情報処理方法
IPC: G16H20/00
Filed: 2022-05-24
Abstract: 【課題】周辺症状の主要因を適切に推定する情報処理装置及び情報処理方法等の提供。【解決手段】 情報処理装置は、センサを用いて取得されたセンシングデータを含む入力データを取得する取得部と、入力データに基づいて、被介助者が、認知症の周辺症状が見られる状態である周辺症状状態となった主要因が、被介助者の周辺環境に起因する環境要因、被介助者の実行機能障害に起因する第１中核要因、被介助者の見当識障害に起因する第２中核要因、及び、被介助者の心理に起因する心理要因を含む複数の要因の何れであるかを推定する要因推定部と、を含む。【選択図】図１
Patent JP-2023173890-A (JP)
Title: 通信装置、制御方法およびプログラム
IPC: B41J29/38
Filed: 2022-05-26
Abstract: 【課題】 印刷装置を定額で利用するサービスにおいて、さらなる利便性の向上が求められている。【解決手段】 前記印刷装置に関する定額サービスに関する情報を取得する第１取得手段と、ジョブデータの処理の実行を受け付ける受付手段と、前記第１取得手段において取得した情報が第１の定額サービスが契約されていることを示す情報であり、かつ前記受付手段において受け付けた前記ジョブデータの処理が印字動作を伴わない処理である場合、前記ジョブデータの処理を実行し、前記第１取得手段において取得した情報が前記第１の定額サービスと異なる第２の定額サービスが契約されていることを示す情報であり、かつ前記受付手段において受け付けた前記ジョブデータの処理が印字動作を伴わない処理である場合、前記ジョブデータの処理を実行しない第１制御手段と、を備えることを特徴とする印刷装置。【選択図】 図５
Patent JP-2023174220-A (JP)
Title: 加熱装置
IPC: F24H15/335
Filed: 2022-05-27
Abstract: 【課題】ヒータへのスケールの付着を抑制することができる加熱装置を提供する。【解決手段】加熱装置１０は、貯水部１４と、循環流路１６と、遠心ポンプ１８と、ヒータ２０と、制御部５０とを備える。貯水部１４は、水を貯留する。循環流路１６は、貯水部１４の外部に設けられ、貯水部１４内の水を循環させる。遠心ポンプ１８は、循環流路１６に設けられ、貯水部１４内の水を循環流路１６を介して循環させる。ヒータ２０は、循環流路１６に設けられ、循環流路１６内を流れる水を加熱する。制御部５０は、遠心ポンプ１８及びヒータ２０の動作を制御する。また、制御部５０は、ヒータ２０による水の加熱中に遠心ポンプ１８で水を循環させ、ヒータ２０による水の加熱を停止させるとき、遠心ポンプ１８で継続して水を循環させる。【選択図】 図１
Patent JP-2023174349-A (JP)
Title: 画像表示装置、車両及び画像表示方法
IPC: B60R11/02
Filed: 2022-05-27
Abstract: 【課題】クロストークの発生を低減しつつ遮蔽部が透明化されたように知覚させることが可能な画像表示装置、車両及び画像表示方法が提供される。【解決手段】画像表示装置（１）は、観察者及び観察者の周囲を撮像し、撮像して得られた画像データを出力する撮像部と、画像データに基づいて、観察者の右眼によって見られる、観察者の視界を遮る遮蔽部に対応する範囲の第１画像を生成する第１画像処理部と、画像データに基づいて、観察者の左眼によって見られる、遮蔽部に対応する範囲の第２画像を生成する第２画像処理部と、観察者を撮影した画像データに基づいて、観察者の顔の向き又は視線方向を検出する視線検出部と、遮蔽部に対する観察者の顔の向き又は視線方向の関係に基づいて決定した第１画像又は第２画像のいずれかと、単色の均一画像とを遮蔽部に表示する画像表示部とを備える。【選択図】図１
Patent JP-2022109335-A (JP)
Title: game machine
IPC: A63F7/02
Filed: 2022-05-30
Abstract: PROBLEM TO BE SOLVED: To provide a game machine capable of enhancing excitement of games that use operation means. 
     SOLUTION: When a player performs a depressing operation (a first operation) of an operation button 71 in an effective period corresponding to a unit presentation, a point is obtained. If the points obtained by the depressing operation of the operation button 71 reach prescribed points, a privilege of suggesting a game state after the finish of a big win state is given to the player by a depressing operation (a second operation) of an OK button 80 by the player before the generation of a prescribed trigger. On the other hand, if the OK button 80 does not receive the depressing operation, the privilege is not given. Accordingly, participation mind of the player is enhanced, and thus a game machine capable of enhancing excitement of games that use the operation means can be provided. 
     SELECTED DRAWING: Figure 44 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022113736-A (JP)
Title: Photodetection device and electronic device
IPC: H01L27/146
Filed: 2022-06-02
Abstract: PROBLEM TO BE SOLVED: To prevent a leakage of an electric charge between adjacent pixels. 
     SOLUTION: A plurality of pixels perform photoelectric conversion on light incident from a back surface via a different on-chip lens for each of the pixels. A pixel separation wall is composed of a front surface trench which is a trench formed on the front surface, and a back surface trench which is a trench formed on the back surface, and formed between adjacent pixels. A wiring layer is provided on the front surface. The present disclosure can be applied to, for example, a back-illuminated CMOS image sensor or the like. 
     SELECTED DRAWING: Figure 4 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022120109-A (JP)
Title: Poorly water-soluble component-solubilizing micelles and liquid preparations containing the same
IPC: A61K47/10
Filed: 2022-06-10
Abstract: PROBLEM TO BE SOLVED: To solubilize a poorly water-soluble component in a liquid preparation, provide a liquid preparation containing a poorly water-soluble component, and enhance the solubility of the poorly water-soluble component in water (for example, neutral, weakly acidic, or weakly basic), and/or to stabilize a poorly water-soluble component-containing liquid preparation to a practically sufficient degree as a pharmaceutical. 
     SOLUTION: Provided are micelles, which are anionic micelles each comprising, as a constituent unit, a component having a functional group that is anionized under basic conditions and capable of forming an anionic micelle, the micelle being protected on its periphery with a protective agent, or which are cationic micelles each comprising, as a constituent unit, a component having a functional group that is cationized under acidic conditions and capable of forming a cationic micelle, the micelle being protected on its periphery with a protective agent. 
     SELECTED DRAWING: None 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022123043-A (JP)
Title: Pen needle outer cover concepts
IPC: A61M5/32
Filed: 2022-06-15
Abstract: PROBLEM TO BE SOLVED: To provide a pen needle which is easy to use. 
     SOLUTION: A pen needle includes a hub having a proximal end, a needle which is received in an axial direction on the hub and has a proximal end and a distal end, and an outer cover received on the hub in order to cover the distal end of the needle. The outer cover has a contact receiving part adjacent to the side wall of the proximal end for receiving the proximal end having a side wall and the hub. The side wall at the proximal end of the outer cover has a diameter larger than an inner diameter of the contact receiving part engaging the proximal end of the hub. 
     SELECTED DRAWING: Figure 10 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022120166-A (JP)
Title: Sales data processing device, program, and sales data processing system
IPC: G07G1/00
Filed: 2022-06-16
Abstract: PROBLEM TO BE SOLVED: To suitably support registration of commodities by clerks and customers. 
     SOLUTION: A sales data processing device includes: customer registration means that registers a commodity according to operation of a customer; clerk registration means that registers a commodity according to operation of a clerk; commodity display selection means that displays a region showing commodities and receives selection of a commodity; imaging means that images a target commodity including characteristics of the commodity or a symbol code attached to the commodity; first commodity identification means that identifies the commodity on the basis of the characteristics imaged by the imaging means; and second commodity identification means that identifies the commodity on the basis of the symbol code imaged by the imaging means. The customer registration means registers, when a commodity is not identified by the second commodity identification means, the commodity identified by the first commodity identification means. The clerk registration means registers, when a commodity is not identified by the second commodity identifying means, the commodity whose selection is received by the commodity display selection means. 
     SELECTED DRAWING: Figure 25 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023024933-A (JP)
Title: Robot system comprising sizing mechanism for image base and method for controlling robot system
Inventor: JOSE JERONIMO MOREIRA RODRIGUES
IPC: B25J13/08
Filed: 2022-06-17
Abstract: To provide a method for controlling a robot system.SOLUTION: The method for controlling a robot system includes steps of: obtaining precedent image data on a starting place and/or a task place for transferring objects from the starting place to the task place, where the data includes a first measured depth value corresponding to a height of a stack of objects; obtaining subsequent image data on the starting place and/or the task place at the time after one or more objects are transferred from the stack of objects, where the data includes a second measured depth value corresponding to a height of the stack of objects at the time after the objects of stack of objects are transferred; and deriving one or more dimensions of at least one transferred object by comparing the first measured depth value with the second measured depth value, by identifying a comparison place on the basis of the at least one transferred object, where the dimensions include a height of the at least one transferred object.SELECTED DRAWING: Figure 6
Patent JP-2024000567-A (JP)
Title: 換気装置
IPC: F24F7/007
Filed: 2022-06-21
Abstract: 【課題】送風量にゆらぎを持たせた場合にも騒音値のゆらぎを抑制可能な換気装置を提供する。【解決手段】換気装置１００は、居室空間３２と、居室空間３２へ空気を供給するための給気口４１と、居室空間３２の空気を排出するための排気口４２と、を有するボックス３と、給気口４１から供給される空気を送出する送風機４と、居室空間３２の空気を排気口４２に導く排気風路４４と、送風機４から送出された空気を居室空間３２に導く通風路５と、送風機４から送出された空気を、居室空間３２を迂回して排気口４２へ導くバイパス風路６と、バイパス風路６の開口率を調整する第１ダンパ７と、第１ダンパ７の動作を制御する制御部９と、を備える。制御部９は、第１ダンパ７を用いてバイパス風路６の開口率を制御し、通風路５から居室空間３２へ搬送される空気の量と通風路５からバイパス風路６へ搬送される空気の量とを調整する。【選択図】図１