baber/WOPTO huggingface dataset:
Patent JP-2019511040-A (JP)
Title: テキスト情報クラスタ化方法及びテキスト情報クラスタ化システム
IPC: G06F16/00
Filed: 2017-02-16
Abstract: 本出願の一実施形態は、テキスト情報クラスタ化方法及びシステムを開示している。クラスタ化方法は、複数のテキスト情報のそれぞれに対して単語セグメント化を実行するステップと、複数の第１レベルトピックを形成するべく、単語セグメント化が実行された複数のテキスト情報に対して初期クラスタ化を実行するステップであって、第１レベルトピックのそれぞれは、少なくとも２つのテキスト情報を含む、ステップと、予め設定された規則に従って、第１レベルトピックのそれぞれの下のテキスト情報の数に基づいて第１レベルトピックのそれぞれの下の第２レベルトピックの数を判定するステップと、複数の第２レベルトピックを形成するべく、第１レベルトピックのそれぞれの下の第２レベルトピックの数に従って第１レベルトピックのそれぞれに含まれている少なくとも２つのテキスト情報に対して第２クラスタ化を実行するステップとを含む。本出願においては、初期クラスタ化において、階層クラスタ化方法を使用することにより、第１レベルトピックの合計数が減少し、これにより、演算効率が改善され、第２クラスタ化において、第２レベルトピックの数が、テキスト情報の数に従って動的に判定され、これにより、第２レベルトピックの演算速度が加速される。
Patent JP-2019503516-A (JP)
Title: 光ファイバーのバンドルを使用した高分解能撮像のためのシステム及び方法
IPC: A61B1/045
Filed: 2015-12-17
Abstract: 一態様によれば、本発明は、光ファイバーコア（Ａ）のアレイを備え、対象物の空間的にインコヒーレントな複数の点源から発せられた複数の光線を受けるようになっているファイバーバンドル（１）とを備える対象物の高分解能撮像システムに関し、本システムは、検出平面を有し、ファイバーバンドルの近位端に位置し、複数のスペックルパターンを受けるようになっている二次元検出器（２４０）であって、スペックルパターンの各々は前記光線の１つがファイバーバンドル内の少なくとも複数のコアを伝送する結果生じるものであり、前記二次元検出器によって検出された複数のスペックルパターンの集合体によりスペックル群画像が形成される、二次元検出器（２４０）と、前記スペックル群画像から対象物の画像を求めるようになっている処理ユニット（２５０）とを更に備える。
Patent JP-2019518231-A (JP)
Title: 発光ダイオードディスプレイ及びそれを含む絶縁されたガラスユニット
IPC: C03C27/12
Filed: 2017-04-07
Abstract: 内側板ガラス及び外側板ガラスを含む発光ダイオードディスプレイが記載される。内側板ガラスは、第１及び第２の主表面を有し、第２の主表面からの可視光反射は７．６％以下である。外側板ガラスは、内側板ガラスと平行な関係にある。１つまたは複数の発光ダイオード（ＬＥＤ）及び少なくとも１つ（第１）の中間層が、内側板ガラスと外側板ガラスとの間に設けられている。第１の中間層は、１つまたは複数のＬＥＤを封入している。導電性コーティングが内側板ガラスの第１の主表面の上に形成されてもよく、１つまたは複数のＬＥＤのうちの少なくとも１つ（第１）が導電性コーティング上に設けられてもよく、第１の発光ダイオードは導電性コーティングと電気的に導通している。導電性コーティングは、可視光に対して透明であってもよい。【選択図】図２
Patent JP-2019520103-A (JP)
Title: ナビゲーションおよびローカル温度測定
IPC: A61B8/12
Filed: 2017-04-27
Abstract: システムは、体積の中に設置されている器具に伴うサーマルセンサーを含む。サーマルセンサーは、器具の表面における温度、および、器具から所定の距離だけ離れた位置における温度を決定する際に有用である可能性がある。治療法は、サーマルセンサーによって感知された温度に基づいて実施され得る。
Patent JP-2019522064-A (JP)
Title: 吸水性または水溶性ポリマー、中間化合物、及びそれらの方法
IPC: C08F22/10
Filed: 2017-05-25
Abstract: グラフトコポリマー、グラフトコポリマーを含む組成物、中間体物質、及び関連する方法が開示され、ここで該グラフトコポリマーは、１，１−二置換−１−アルケン化合物（好ましくはメチレンマロン酸エステル化合物）を含む第１ポリマー成分を含み、第２成分にグラフトされる。結果として生じたグラフトコポリマーは、親水性または水溶性であり得る。第２成分は、好ましくは親水性成分である。
Patent JP-2019515580-A (JP)
Title: イントラ予測モードのネイバーベースのシグナリング
IPC: H04N19/11
Filed: 2017-05-10
Abstract: ビデオデータをコーディングするためのデバイスは、ビデオデータの現在ブロックがイントラ予測モードを使用してコーディングされていると判断し、現在ブロックの第1の隣接ブロックのイントラ予測モードを、現在ブロック用の最確モード候補リストに追加し、現在ブロックの第2の隣接ブロック用のイントラ予測モードを、現在ブロック用の最確モード候補リストに追加し、現在ブロックの第3の隣接ブロック用のイントラ予測モードを、現在ブロック用の最確モード候補リストに追加し、イントラ予測モードを使用して、ビデオデータの現在ブロックをコーディングするように構成される。
Patent JP-2019516390-A (JP)
Title: 動物用食品の製造方法
IPC: A23K20/179
Filed: 2017-05-24
Abstract: 本発明は動物用食品の製造方法に関する。本発明のさらなる側面によれば、動物用食品が提供される。本発明の方法および本発明の動物用食品は、対応する製品が個別化されていることを特徴とする。【選択図】図１
Patent JP-2019505358-A (JP)
Title: 耐移動性と摘出性を備えた植込み式医療装置
IPC: A61N1/37
Filed: 2017-04-17
Abstract: 植込み式医療装置は、外表面を有するハウジングと外表面に配置された複数の突起とからなり、複数の突起は、植込み式医療装置が患者の体内に植え込まれた後、患者の組織内で、回転移動すること、並進移動すること、および側方移動することのうちの少なくとも１つを抑制する。
Patent JP-2019524456-A (JP)
Title: 表および裏面取り用回転式フライスのための星形切削インサート
IPC: B23C5/20
Filed: 2017-06-18
Abstract: 表および裏面取り用回転式フライス（２０）は、インサートポケット（３０）とポケット（３０）に解放可能に保持される割り出し可能な星形切削インサート（３２）とを含むカッター本体（２２）を含む。切削インサート（３２）は星形の上面および下面（４２、４４）を有し、上面および下面（４２、４４）は、上面および下面（４２、４４）の各々に交わる周面（４６）によって接続される。切削インサート（３２）は、周方向に交互する複数の内側および外側コーナ部（５０、５２）を含む。切削部（５４）は、各外側コーナ部（５０）と、その回転方向前方に隣接する第１の内側コーナ部（５２ａ）と、その回転方向後方に隣接する第２の内側コーナ部（５２ｂ）とによって画成される。各切削部（５４）は、外側コーナ部（５０）から第１の内側コーナ部（５２ａ）まで延在する表面取り用切刃（５８ａ）と、外側コーナ部（５０）から第２の内側コーナ部（５２ｂ）まで延在する裏面取り用切刃（５８ｂ）とを含む。【選択図】図７
Patent JP-2019522189-A (JP)
Title: 一体型スペクトルユニット
IPC: G01J3/26
Filed: 2017-06-15
Abstract: 本開示の態様は、第１の基板内に作成したマイクロ−エレクトロ−メカニカルシステム（ＭＥＭＳ）干渉計と、第２の基板の上に一体化した光方向変換構造を具える一体型スペクトルユニットであって、第２の基板が第１の基板に結合されているユニットに関する。光方向変換構造は、第１の基板に対して面外方向に伝搬する入力光ビームを受光して、入力光ビームを、ＭＥＭＳ干渉計に向けて第１の基板の面内方向に方向変換する、少なくとも一のミラーを具える。【選択図】図３
Patent JP-2019522751-A (JP)
Title: エンジンブロック
IPC: F02B75/18
Filed: 2017-06-16
Abstract: 【課題】 エンジンブロックを提供すること。【解決手段】 シリンダハウジング(１)と、シリンダハウジング(１)下部に位置するツインクランクシャフト機構取付ハウジング(２)とを含み、シリンダハウジング(１)とツインクランクシャフト機構取付ハウジング(２)が一体化とし；シリンダハウジング(１)内にピストンヘッドと密封接触して燃焼室を構成するシリンダキャビティ(３)を有し；前記ツインクランクシャフト機構取付ハウジング(２)は、エンドキャップ(２−１)とサイドカバー(２−２)に囲まれてから成り、ツインクランクシャフト機構取付ハウジング(２)内部にピストンロッドガイド溝(６)を有し、ピストンロッドガイド溝(６)上に連接棒摺動溝(７)が貫設され、ピストンロッドガイド溝(６)の両側にベルクランクの回動自在可能なチャンバー(４)が設けられ、各ベルクランクの回動自在可能なチャンバー(４)両端のハウジングにクランク主軸が挿通するための主軸取付穴(５)を有し、主軸取付穴(５)の下部に主軸支持部が取り付けられ；前記ツインクランクシャフト機構取付ハウジング(２)の一端にセンタ出力歯車軸(９)が取り付けられ、その取り付け位置がセンタ出力歯車とツインクランクシャフト端部の駆動歯車の同時噛み合いを満たす。このエンジンブロックは、ツインクランクシャフト機構のために具体的なシリンダハウジング構造を提供し、ピストンの密封端とガイド端の分離を実現し、エンジンの実際の運転需要を満たす。【選択図】 図１１
Patent JP-2020111403-A (JP)
Title: Center of gravity estimation device
Inventor: HATTORI TATSUYA
IPC: B66F9/24
Filed: 2019-01-08
Abstract: To provide a center of gravity estimation device capable of estimating the center of gravity position of cargoes in multiple directions for a cargo handling vehicle in the state where the cargo is loaded on the loading section of the cargo handling vehicle.SOLUTION: A center of gravity estimation device 40 comprises two load sensors 17 to detect each load applied to the two front wheels on the left and right, a pressure sensor 18 to detect a lift cylinder pressure, a first center of gravity calculation part 29, and a second center of gravity calculation part 30, where the first center of gravity calculation part calculates the center of gravity estimation value of the cargo in the front and back directions of a forklift based on the load applied to the left and right two front wheels detected by the two load sensors 17, on the lift cylinder pressure detected by the pressure sensor 18, and on the data about a forklift structure, and the second center of gravity calculation part calculates the center of gravity estimation value of the cargoes in the forklift left and right directions based on the load applied to the left and right two front wheels detected by the two load sensors 17, and on the data about the forklift structure.SELECTED DRAWING: Figure 7
Patent JP-2019082706-A (JP)
Title: Advertising system
Inventor: YOSHIKAWA AKIHIRO
IPC: G06Q30/02
Filed: 2019-01-10
Abstract: To provide a system of advertising which uses a mobile object on a physical space as a sending source of visual advertising information.SOLUTION: A rental cycle 12 as a mobile object is equipped with an advertising display device 32 displaying advertisement information and a transmitter 30, and the advertising system 10 includes a management server 50 capable of communicating with the portable terminal 90 of each passenger. The portable terminal 90 is provided with a detection unit and a sending unit. The detection unit measures the distance between the portable terminal 90 and the transmitter 30 based on signals received from the transmitter 30, and detects the portable terminal 90 capturing a mobile body when the measured distance becomes in a predetermined range. The sending unit sends data showing the fact that the portable terminal has captured the mobile body to the management server 50. When the management server 50 receives the data about the fact, the server determines a privilege to be given to the passenger of the portable terminal 90 and sends the data about the privilege to the portable terminal 90.SELECTED DRAWING: Figure 1
Patent JP-2020111945-A (JP)
Title: Crusher screen device, control device of crusher screen device and operation method of crusher screen device
Inventor: Hagiwara Yukiko
IPC: B02C13/284
Filed: 2019-01-10
Abstract: To provide a crusher screen device having a function for removing contaminants on the screen device, and capable of reducing a load of the screen device in contaminant treatment in a conduit, a control device of the crusher screen device and an operation method of the crusher screen device.SOLUTION: There are also provided a crusher screen device, a control device of the crusher screen device and an operation method of the crusher screen device having a screen part 5 for transferring contaminants G in a conduit, and a control part for controlling an operation of the screen part. When the control part detects an overload at the screen part, the control part performs a reverse operation at an angle or larger per rotation (the number of pieces of rakes on a rotating face). By this constitution, the operation method performs the reverse operation by a predetermined angle, removes the contaminants being a factor of the overload of the screen part from a point at which an overload state is detected, and can perform processing while reducing a load applied on the screen device.SELECTED DRAWING: Figure 2
Patent JP-2020112688-A (JP)
Title: Image forming system
Inventor: FURUYA OSAMU
IPC: G03G15/16
Filed: 2019-01-11
Abstract: To improve a transfer rate to control a reverse transfer rate; and thereby to improve image quality and reduce toner consumption.SOLUTION: An image forming system comprises: image carriers 30 that carry toner images; and a transfer body that has a transfer surface to which the toner images are transferred from the image carriers, where a resistance component [logΩ cm] in a frequency range of an AC current of 1 mHz or more and 1 Hz or less is larger than 14.6 and smaller than 17.7. The transfer body has a first layer that has the transfer surface and a layer adjacent to the first layer, and the first layer has a layer thickness larger than 1 um and smaller than 20 um.SELECTED DRAWING: Figure 2
Patent JP-2019091057-A (JP)
Title: Exposure apparatus and device manufacturing method
Inventor: OMURA YASUHIRO
IPC: G03F7/20
Filed: 2019-01-15
Abstract: To provide a catadioptric projection optical system having a large numerical aperture and using a liquid immersion method without enlarging an optical member constituting the catadioptric projection optical system.SOLUTION: A catadioptric projection optical system PL1 forming an image of a first plane R1 on a second plane comprises: a first imaging optical system G1 that includes at least six mirrors M1 to M6 and forms a first intermediate image and a second intermediate image of the first plane R1; and a second imaging optical system G2 that relays the second intermediate image onto the second plane.SELECTED DRAWING: Figure 1
Patent JP-2019140676-A (JP)
Title: Camera system and vehicle travel control system
Inventor: SATO YOSHIAKI
IPC: H04N5/232
Filed: 2019-01-22
Abstract: To provide a camera system capable of improving a specific accuracy of a position of a subject in a multiple exposure image.SOLUTION: A camera system 10 comprises: an imaging apparatus 20 which obtains a first image by a normal exposure of performing once exposure and obtains a second image by multiple exposure of performing a plurality of exposures; and an image processing device 30 which extracts a feature amount of a first object from the first image and identifies at least one first position corresponding to the feature amount in the second image.SELECTED DRAWING: Figure 1
Patent JP-2020120233-A (JP)
Title: Work machine system and method
Inventor: NAKAZAWA KOICHI
IPC: B60R1/00
Filed: 2019-01-23
Abstract: To accurately grasp the positional relationship between a work machine and its surroundings using an image by an operator.SOLUTION: A processor acquires shape data indicating a peripheral shape in the traveling direction of a work machine. A processor generates a guide line. The guide line is arranged apart from the work machine. The guide line indicates the peripheral shape in the traveling direction of the work machine. The processor combines a peripheral image and the guide line to generate an image including the peripheral image of the work machine and the guide line. A display displays an image including the peripheral image and the guide line on the basis of a signal from the processor.SELECTED DRAWING: Figure 5
Patent JP-2020118880-A (JP)
Title: Recorder
Inventor: AOKI TAKESHI
IPC: G03G21/16
Filed: 2019-01-25
Abstract: To solve the problem that cost is increased when means for uncompletedly closing an opening and closing body is constituted of a dedicated member, when a detachable unit body is not attached to a recorder main body.SOLUTION: The recorder comprises: a recorder main body including a recording part for recording on a medium; an opening and closing body openable and closable to the recorder main body; a unit body detachable to a mounting part exposed by opening the opening and closing body and constituting a part of a first medium conveying path in the state mounted on the mounting part; a second medium conveying path provided above the first medium conveying path; and a passage formation member positioned at the upper part of the mounting part and forming a part of the second medium conveying path. The passage formation member provided so as to change a posture is evacuated from the second medium conveying path in the state of removing the unit body from the mounting part and has a second posture going to the opening and closing passage of the opening and closing body.SELECTED DRAWING: Figure 12
Patent JP-2020118630-A (JP)
Title: Method for checking holding member of electronic component conveyance device, electronic component conveyance device, and electronic component inspection device
Inventor: YAMAZAKI TAKASHI
IPC: G01R31/26
Filed: 2019-01-28
Abstract: To provide a method for checking a holding member of an electronic component conveyance device with which, when using a component holding plate (change kit) that accommodates an IC device by changing, it is possible to prevent a mistake in selecting the component holding plate.SOLUTION: Provided is a method for checking a holding member (tray 200 or component holding plate 100) mounted in an electronic component conveyance device (conveyance device 10) that conveys an electronic component (IC device 90) and having recesses 111-118 in which the electronic component is accommodated. The method includes: imaging the holding member so as to include the recesses; acquiring recess data relating to the shape or arrangement of the recesses; checking the recess data against storage data relating to the shape or arrangement of the electronic component that is previously stored; and notifying when a difference between the acquired recess data and the storage data exceeds a preset threshold pertaining to determination.SELECTED DRAWING: Figure 8
Patent JP-2020123819-A (JP)
Title: Elastic wave filter
Inventor: MAEDA KENTA
IPC: H03H9/64
Filed: 2019-01-30
Abstract: To provide an elastic wave filter, with which steepness of a passband end part is improved while maintaining a passband width.SOLUTION: An elastic wave filter 10 comprises serial arm resonators 101 to 105 having IDT electrodes formed for a substrate having a piezoelectric property. A resonance frequency of the serial arm resonators 101 to 105 is positioned within a passband of the elastic wave filter 10. The IDT electrodes extend in a direction crossing an elastic wave propagation direction. One pair of comb-like electrodes is constructed by a plurality of electrode fingers arranged parallel to each other and a bus bar electrode connecting electrode finger one ends constituting the plurality of electrode fingers to each other. The IDT electrodes of the serial arm resonator 101 having the lowest antiresonance frequency include two or more floating thinning-out electrodes arranged so as not to sandwich the electrode fingers constituting one comb-like electrode of the pair of comb-like electrodes.SELECTED DRAWING: Figure 4A
Patent JP-2020126314-A (JP)
Title: Design supporting device
Inventor: PHAN VINH LONG
IPC: G06F30/20
Filed: 2019-02-01
Abstract: To predict a tank temperature at a fireproof test in a design concept stage of a fuel tank.SOLUTION: At the steps 100-118, a design supporting device calculates Reynolds number Re at each portion of a fuel tank 114 based on design concept information including the shape of the fuel tank 114 and a gap size between the fuel tank 114 and a vehicle floor 110, and on flow velocity around the fuel tank 114 using numerical fluid dynamics. At steps 120-142, the design supporting device calculates a temperature T(finish) at each portion of the fuel tank at the end of the fireproof test, based on calorie Qflowing into the fuel tank 114 from a flame at the fireproof test calculated by using the Reynolds number Re and a thermal conductivity model according to each portion of the fuel tank 114, and on a physical property value including a material density ρof the fuel tank 114, and on the information about a plate thickness d of the fuel tank 114.SELECTED DRAWING: Figure 18
Patent JP-2020136728-A (JP)
Title: Image processing apparatus, system, method, and program
Inventor: MIYAMOTO DAIJIRO
IPC: H04N1/00
Filed: 2019-02-13
Abstract: To display correspondence between a manuscript image displayed on a UI screen and a manuscript on a manuscript table corresponding to the manuscript image so as to be easily confirmed by a user when a plurality of manuscripts are placed on the manuscript table.SOLUTION: An image processing apparatus comprises: image acquisition means for acquiring scan image data including image regions corresponding to a plurality of manuscripts and a plurality of pieces of manuscript image data obtained by extracting the image regions from the scan image data, the plurality of pieces of manuscript image data corresponding to the plurality of manuscripts, respectively; and display control means for displaying one of the plurality of pieces of manuscript image data on a display device together with the scan image data. The display control means makes an image region in the scan image data corresponding to the one manuscript image data be emphasized and displayed.SELECTED DRAWING: Figure 14
Patent JP-2020133668-A (JP)
Title: Spring structure
Inventor: SUZUKI TAKEZO
IPC: F16J3/04
Filed: 2019-02-13
Abstract: To provide a technology of a spring structure which can support a large load safely.SOLUTION: A spring structure includes: a metallic bellows member; a first support member fixed to one axial end part of the bellows member; and a second support member disposed around the bellows member and the first support member and covering the bellows member and the first support member. The second support member includes a fixed part fixed to the other axial end part of the bellows member. A liquid is enclosed in a sealed space enclosed by the bellows member, the first support member, and the second support member.SELECTED DRAWING: Figure 1
Patent JP-2020135949-A (JP)
Title: Active material, and positive electrode mixture and solid battery using the same
Inventor: WASHIDA DAISUKE
IPC: H01M4/36
Filed: 2019-02-13
Abstract: To provide an active material having an increased operating voltage at the initial stage of discharge.SOLUTION: An active material according to the present invention is used for a solid-state battery. In a radial distribution function obtained by the measurement of an X-ray absorption fine structure of the active material, at least one peak is observed in the range of 0.115 nm or more and 0.144 nm or less, and at least one peak is observed in the range of 0.310 nm to 0.340 nm or less. The active material includes core material particles and a coating layer arranged on the surfaces of the core material particles. A halogen element exists on the surface of the core material particles or in the vicinity thereof.SELECTED DRAWING: Figure 1
Patent JP-2020137222-A (JP)
Title: Motor controller
Inventor: MURATA HIROMI
IPC: H02P6/16
Filed: 2019-02-18
Abstract: To provide a motor controller more accurately detecting a rotation angle of a rotation shaft.SOLUTION: A motor controller 100 comprises: a plurality of rotation position sensors 10 for detecting a rotation position of a rotation shaft of a motor MT; and a sensor setting unit 22 that evaluates a performance of the plurality of rotation position sensors by a predetermined evaluation method and, on the basis of the evaluation, sets a control rotation position sensor to be used for motor control out of the plurality of rotation position sensors. The sensor setting unit electrifies the motor in a plurality of drive modes in which the rotation shaft stops at predetermined reference positions and evaluates a performance of the rotation position sensors by the predetermined evaluation method using detection positions based on output of the rotation position sensors acquired in each drive mode and a reference position.SELECTED DRAWING: Figure 4
Patent JP-2020136975-A (JP)
Title: Original size detection method of image reading apparatus
Inventor: NOMURA NAOHIKO
IPC: H04N1/10
Filed: 2019-02-22
Abstract: To provide an image reading apparatus capable of automatically determining an original size, in which a mark or a pattern on a white sheet attached for the determination is removed, an original platen is irradiated with a light generation source attached onto an outer side of a white sheet edge, and the original size can be determined by reading it with a reading sensor.SOLUTION: An image reading apparatus includes: a white sheet that suppresses an original; a thickness plate part containing one or more light source in other than a reading range of the white sheet; a transparence original platen on which the original is mounted; a point light source array lighting that is arranged in a line direction of the bottom of the original platen; a reading unit that contains a light reception element that receives a reflection light of the original to be irradiated; a driving unit that relatively moves the reading unit with the original on the original platen in a sub-scanning direction; a storage unit that acquires an irradiation light from a light source installed on a pressure plate and stores them; a determination unit that determines the presence/absence of the original installed on the original platen on the basis of a specific threshold value from information acquired by the storage unit; and an original size detection unit that estimates an original size installed from the information acquired by the determination unit.SELECTED DRAWING: Figure 1
Patent JP-2020133874-A (JP)
Title: Drive plate
Inventor: OKUDA TATSUJI
IPC: F16H41/24
Filed: 2019-02-26
Abstract: To provide a drive plate which can suppress the enlargement of a size of an engine starter while favorably securing the durability of a ring gear.SOLUTION: This drive plate includes a plate member connected to a crankshaft of an engine and a power transmission object, and a ring gear engaged with a pinion gear which is moved toward the plate member by the engine starter in an axial direction. The drive plate is rotated by the engine starter at a start of the engine. The plate member includes a ring gear support part for supporting the ring gear so as to be non-rotatable and movable in the axial direction with respect to the plate member, and an elastic body for energizing the ring gear to the engine starter side is arranged between the ring gear support part and the ring gear.SELECTED DRAWING: Figure 1
Patent JP-2020136246-A (JP)
Title: Air purge unit
Inventor: NAKAMURA JUMPEI
IPC: H01H35/00
Filed: 2019-02-26
Abstract: To provide an air purge unit that can remove dirt on a lens surface of a photoelectronic sensor with a small amount of supplied air.SOLUTION: An air purge unit 2 comprises: a housing 30; an air supply port 31 for supplying air to the inside of the housing 30; and a plurality of air blowing ports 32 that are arranged in a side wall of the housing 30 for blowing air to a lens surface 11a of a photoelectronic sensor 1.SELECTED DRAWING: Figure 6