baber/WOPTO huggingface dataset:
Patent WO-2018188146-A1 (WO)
Inventor: ZHOU XINGYU
IPC: H01L29/786
Filed: 2017-05-12
Abstract: La présente invention concerne un substrat de réseau, un dispositif d'affichage et un procédé de fabrication associé. Le substrat de réseau comprend : un substrat (10, 20); une première couche d'électrode de grille (11, 21a); une première couche d'isolation (12, 22); une couche de canal (13, 23); des couches d'électrode de source et de drain (14, 24a); une seconde couche d'isolation (15, 25); et une couche d'électrode de pixel (16, 26a) et une seconde couche d'électrode de grille (17, 26b) qui sont disposées à intervalles et formées sur la seconde couche d'isolation (15, 25). La seconde couche d'électrode de grille (17, 26b), conjointement avec la première couche d'électrode de grille (11, 21a) et les couches d'électrode de source et de drain (14, 24a), forme un TFT de transistor à couches minces à structure de double grille. De la manière ci-dessus, le TFT de transistor à couches minces de la structure à double grille est formé, et la force d'entraînement du substrat de réseau est encore augmentée.
Patent WO-2018188161-A1 (WO)
Title: 一种有机发光显示面板的修补方法及有机发光显示面板
Inventor: CHEN CAIQIN
IPC: H01L27/32
Filed: 2017-05-19
Abstract: 一种有机发光显示面板的修补方法及有机发光显示面板，修补方法包括：确定待修补的显示像素；将待修补的显示像素的开关管(T7)的控制端(208, 608)与扫描线(402, 505)之间的连接断开；将开关管(T7)的第一通路端(204, 604)与第二通路端(206, 606)进行连接，以使得第二参考电压(Vi)持续施加到待修补的显示像素的有机发光二极管(201, 601)的阳极(207, 607)。通过有机发光二极管(201, 601)阴极(203, 603)加载的第一参考电压(Vss)和阳极(207, 607)加载的第二参考电压(Vi)而使得有机发光二极管(201, 601)持续处于暗态，减少了有机发光显示面板修补的能耗并提高了修补效率。
Patent WO-2018205300-A1 (WO)
Title: 曲面显示设备及其组装方法
Inventor: CHENG JIAHE
IPC: G09F9/30
Filed: 2017-05-19
Abstract: 一种曲面显示设备(1A)及其组装方法，此曲面显示设备(1A)包括：一曲面显示设备主体(11)，具有一显示面(111)与一壳体面(112)，显示面(111)为外凸型态，而壳体面(112)背对显示面(111)且为内凹型态；一壁挂架(12A)，设置于壳体面(112)上；以及一壁挂座(13)，设置于一墙体(W)上；其中壁挂架(12A)固定于壁挂座(13)上，藉此曲面显示设备主体(11)壳体面(112)的两侧端处的连线与墙体(W)水平重合。
Patent WO-2017215626-A1 (WO)
Title: Novel waste water zero emission treatment process for denitration catalyst regeneration of thermal power plant
Inventor: JIANG LUMAN
IPC: C02F9/14
Filed: 2017-06-15
Abstract: A novel waste water zero emission treatment process for denitration catalyst regeneration of a thermal power plant, comprising the following steps: a. preliminary waste water settling; b. pentavalent vanadium reduction; c. clarification by adding lime; d. air-stripping; e. biochemical treatment; f. sterilization; g. filtering and washing; and h. water discharge. In the process, a waste water buffer pool is provided at the front end, waste water collected by the system converges to an outdoor sewage pipe by means of indoor drainage ditches, then is discharged to the waste water buffer pool, is subject to the waste water treatment flow after the buffer pool, and is recycled to the cleaning procedure after reaching the standard, thereby realizing zero emission and recycling of waste water, achieving economization and environmental protection, greatly reducing cost input of enterprises, and improving economic and social benefits of enterprises.
Patent WO-2018028314-A1 (WO)
Title: 一种通信接入的方法及接入点和站点
Inventor: SHI ZHENYU
IPC: H04W48/20
Filed: 2017-06-22
Abstract: 本发明实施例公开了一种通信接入的方法，包括：AP确定需要进行上行数据传输的N个STA相对于AP的M个定向波束方向，再根据这M个定向波束方向将AP的竞争接入时间划分为X个时间段，再根据这X个时间段依次将AP的定向波束方向调整为每个时间段所对应的定向波束方向，以接收至少一个STA发送的竞争接入请求。这样，AP有针对性的根据所划分的多个时间段不断调整定向波束方向用于接收不同方向上的STA发送的竞争接入请求，由于AP采用的是定向波束接收方式，因而使得AP在于周围多个STA能够建立通信接入的前提下，提高了AP的覆盖传输距离。
Patent WO-2018090630-A1 (WO)
Title: 像素排列结构、有机电致发光器件、显示装置、掩模板
Inventor: JI FENGLI
IPC: H01L51/50
Filed: 2017-06-27
Abstract: 一种像素排列结构，所述像素排列结构，包括多个重复排列的像素组，每一像素组包括四个像素，其中，第一像素(310)和第二像素(320)排列在同一行，第三像素(330)和第四像素(340)排列在相邻的另一行，第一像素(310)和第三像素(330)排列在同一列，第二像素(320)和第四像素(340)排列在相邻的另一列；第一像素(310)中的子像素的排列方式，与第二像素(320)中的子像素的排列方式不同，第三像素(330)中的子像素的排列方式与第二像素(320)中的子像素的排列方式相同，第四像素(340)中的子像素的排列方式与第一像素(310)中的子像素的排列方式相同。该像素结构使得制造像素排列结构的金属掩膜板的开口区域较大，进而提高开口率，提高AMOLED产品亮度、寿命以及画质清晰度。还提供了一种有机电致发光器件、显示装置以及掩模板。
Patent WO-2019014881-A1 (WO)
Title: Wireless communication method and device
Inventor: ZHAO PENG
IPC: H04L29/06
Filed: 2017-07-19
Abstract: The present application provides a wireless communication method and device, and pertains to the technical field of communications. The present application can reduce the power consumption of a device in voice communications and extend the battery life of the device. The specific solution comprises: a first device receiving, via a short-distance wireless communication connection between the first device and a second device, a function transfer request sent by the second device, the function transfer request being used to instruct the first device to transfer a wireless communication function of the second device to the first device; upon receipt of the function transfer request, the first device acquiring SIM card information of the second device; and the first device performing, according to the SIM card information of the second device, wireless communication corresponding to a SIM card of the second device.
Patent WO-2018040788-A1 (WO)
Title: 一种杀菌剂组合物
Inventor: ZHONG HANGEN
IPC: A01P3/00
Filed: 2017-07-21
Abstract: 本发明提供了一种杀菌剂组合物，该组合物包含两种有效成分A和B，活性组分A为具有式(Ⅰ)的结构化合物，活性组分B为克菌丹，两组分之间的重量比为1:1～40。本发明还提供了该组合物的制备方法及用途。试验结果表明，本发明提供的上述杀菌组合物增效明显，更重要的是施用量减少，使用成本降低。该杀菌组合物能有效防治作物的某些特定的细菌或真菌病害。通过将不同作用机制和作用方式的杀菌剂进行复配，对于扩大杀菌谱和延缓真菌、细菌抗性以及提高防治效果等方面具有很好的作用。
Patent WO-2019006796-A1 (WO)
Title: Blending process
Inventor: XU DAN
IPC: D02G3/04
Filed: 2017-07-27
Abstract: A blending process, relating to the technical field of textile processes, and comprising the following steps: 1. measuring the maximum tensile strength of a rayon filament, i.e., the maximum pressure that can be applied to the rayon filament; 2. placing a polyester filament into a water steaming tank and steaming same for 45 min at a water temperature of 85-100°C; 3. placing the polyester filament in step 2 under an air vent for ventilation, and conducting pre-shaping for 15-25 h; and 4. adopting a hydraulic loom to conduct blending on the rayon filament and the polyester filament at the maximum pressure. The blending process is complete in scheme and simple in process, can make the properties of the rayon filament matched with those of the polyester filament better, thereby facilitating follow-up processes, and can obviously reduce the quantity of weaving bars on every hectometer of weaved fabric.
Patent WO-2018024162-A1 (WO)
Title: Protéine de fusion glp-1 comprenant une partie fc d'immunoglobuline mutée
Inventor: ZHANG YUBO
IPC: C12N5/10
Filed: 2017-07-28
Abstract: L'invention concerne une protéine de fusion comprenant GLP -1 ou un analogue de celui-ci, un lieur peptidique et une partie Fc d'immunoglobuline mutée, ladite protéine de fusion ayant une demi-vie accrue. L'invention concerne également un procédé de production de la protéine de fusion et l'utilisation de la protéine de fusion dans la préparation de médicaments.
Patent WO-2018232834-A1 (WO)
Title: Method for repairing array substrate, array substrate and liquid crystal display
Inventor: WANG XIAOXIAO
IPC: G02F1/1362
Filed: 2017-07-31
Abstract: A method for repairing an array substrate (11), the method comprising: disconnecting a pixel electrode of a pixel on the array substrate (11) and a TFT switch (23) of the array substrate (11); and communicating the pixel electrode with a common electrode line (25) on the array substrate (11).
Patent WO-2019028632-A1 (WO)
Title: Transportation contract management method
Inventor: WAN ZHONGKAI
IPC: G06Q10/08
Filed: 2017-08-07
Abstract: A transportation contract management method. The method comprises: obtaining identity information of a consignor and identity information of a carrier (101); obtaining article information of a first article (102); obtaining transportation route information of the first article (103); obtaining transportation requirement information of the first article (104); obtaining transportation cost information (105); obtaining information of default conditions and responsibility of default (106); obtaining condition information for cancelling or terminating the contract (107); generating a transportation contract of the first article (108); obtaining warehousing information of the first article, determining whether the carrier begins to carry the first article or not (109), and if yes, calculating a transportation route and a transportation duration of the first article (110); obtaining the transportation environment of the first article (111); calculating an actual transportation cost for transporting the first article (112); obtaining the payment state of the actual transportation cost (113); determining whether there is a default scene or not (114), and if yes, sending prompt information to both the consignor and the carrier (115). By means of the method, the efficiency of transportation contract management is greatly improved.
Patent WO-2019028658-A1 (WO)
Title: Cabin-type smart shared treadmill
Inventor: HE MAOFAN
IPC: A63B22/02
Filed: 2017-08-08
Abstract: A cabin-type smart shared treadmill, comprising a base (1), a cabin for running (60) covering the base (1); a cabin door (61) is provided at the rear end of the cabin for running (60); an electromechanical lock (62) is provided on the outer side of the cabin door (61); the electromechanical lock (62) is connected to a control module; the control module is connected to a wireless communication module; the cabin-type smart shared treadmill further comprises a background management system, and when the wireless communication module receives an unlocking instruction sent from the background management system, the control module controls the electromechanical lock (62) to automatically open; an air blowing device (62) is provided at the front end of the cabin for running (60); an exhaust device (64) is provided at the rear end of the cabin for running (60); the top of the cabin for running (60) is provided with a projection device (70) for projecting a screen on the front wall inside the cabin for running (60); a control box (66) is provided on a side wall inside the cabin for running (60), and the control box (66) has a plurality of control keys.
Patent WO-2019028864-A1 (WO)
Title: Resource allocation method and related apparatus
Inventor: NAN FANG
IPC: H04W72/04
Filed: 2017-08-11
Abstract: Provided in the present application are a resource allocation method and a related apparatus. The resource allocation method comprises: a network device transmits downlink control information to a terminal device, wherein X bits in the downlink control information are used to indicate physical uplink shared channel (PUSCH) resources; and the network device receives uplink data over the PUSCH resources, wherein the PUSCH resources indicated by different binary values of the X bits comprise a PUSCH resource of one physical resource block (PRB), a PUSCH resource of two PRBs, and a PUSCH resource of less than 12 subcarriers. The resource allocation method can use the different binary values of X bits in a DCI to indicate a PUSCH resource of one PRB, a PUSCH resource of two PRBs, and a PUSCH resource of less than 12 subcarriers, thereby reducing signaling overhead compared to the scenario in which specific bits are required in downlink control information to respectively indicate resource allocation using PRBs and subcarriers as units.
Patent WO-2019036893-A1 (WO)
Title: Notification file group communication device, and communication method therefor
Inventor: HAN XINGFENG
IPC: H04W4/12
Filed: 2017-08-22
Abstract: The present invention relates to the field of communication information technology, and in particular to a notification file group communication device and a communication method therefor. The notification file group communication device comprises a sending terminal and a server, wherein the sending terminal is used for logging into the server, selecting a group of notified people, and sending a communication request to the server; and the server accepts a communication request sent by the sending terminal, and establishes communication between the sending terminal and contacts in the group of notified people according to the communication request. By means of the notification file group communication device and the communication method therefor provided in the present invention, when communicating with a plurality of target contacts by means of a sending terminal, the plurality of target contacts are firstly classified into a group of notified people, and then, a target contact communication number corresponding to the group of notified people is found by means of a server, and communication is established to send a notification. The method is simple and fast.
Patent WO-2018129934-A1 (WO)
Title: 一种低阻力切片机刀片
Inventor: HONG XIAOMING
IPC: B26D1/28
Filed: 2017-09-01
Abstract: 一种低阻力切片机刀片，包括刀身（1），刀身（1）的下端设有刀刃（2），刀刃（2）后端面上设有过渡作用的凸台（3），凸台（3）上下两侧的后端面上分别设有应力释放段面（4）和后刃面（5），刀刃（2）前端面上自上至下依次设置有倾斜的前推段面（7）和前刃面（6），且前刃面（6）和前推段面（7）之间设有夹角。该刀片设计新颖合理，能大幅降低切刀片与物体固定部分的挤压推力和摩擦力，减轻切片过程中对物体切面的挤压和摩擦损伤，使切片过程中的反作用力减至最小，实现切片过程的精准、高效以及稳定流畅。
Patent WO-2019056469-A1 (WO)
Title: Online bamboo curtain cloth folding machine
Inventor: BIAN DINGHUA
IPC: B65H45/10
Filed: 2017-10-26
Abstract: An online bamboo curtain cloth folding machine, comprising a rack (1). A material receiving tray (2) extending in a horizontal direction is provided on the rack and is connected to the rack by means of stepping elevators (3); a linear guide rail (4) is provided on the material receiving tray and extends in the direction parallel to the length direction of the material receiving tray; a synchronous traction device is provided on the linear guide rail and comprises a traction rack (5); a traction roller (6) is provided inside the traction rack, and the upper end portion of the traction roller is provided with a locating roller (7); an adjusting lead screw (9) is provided on the material receiving tray, and the traction rack is connected to the adjusting lead screw; a floating roller synchronous mechanism is provided on the rack and comprises a floating roller (10), the floating roller is connected to the rack by means of a swing arm (11) extending in the direction perpendicular to the floating roller, and an angle sensor (12) is provided on the swing arm. The online bamboo curtain cloth folding machine can automatically fold a bamboo curtain, thereby improving the overall folding effect and processing efficiency.
Patent WO-2019061667-A1 (WO)
Title: Electronic apparatus, data processing method and system, and computer-readable storage medium
Inventor: WU ZHENYU
IPC: G06F17/30
Filed: 2017-10-31
Abstract: Disclosed are an electronic apparatus, a data processing method and system, and a storage medium. The electronic apparatus comprises a memory and a processor, wherein the memory stores a data processing system, and when being executed by the processor, the data processing system achieves the following features: when data of a data source end is acquired, carrying out type conversion processing on the acquired data based on pre-set data types, and carrying out exception processing and null value processing on the converted data (S1); after data processing at all processing phases is completed, taking data, after having been processed at the final processing phase, as data to be modeled and storing same in a pre-set pipeline, i.e. an ETL Pipeline (S2); and acquiring a plurality of pre-set machine algorithm models and pre-set model parameter ranges corresponding to the machine algorithm models, and selecting, based on a grid search, a machine algorithm model and a model parameter corresponding to the machine algorithm model, so as to model the data to be modeled (S3). By means of the method, user operations during data sorting, analysis and modeling can be simplified, and the data processing efficiency is improved.
Patent WO-2019000771-A1 (WO)
Title: App-based hospital patient management system
Inventor: WANG GELI
IPC: G07C9/00
Filed: 2017-11-01
Abstract: An app-based hospital patient management system, comprising: a terminal app; an RFID tag card; several Wi-Fi relay stations; a cloud server comprising a cloud receiving module, a cloud monitoring module, and a cloud allocation module; and a hospital server establishing a communication connection with the cloud server, and comprising a hospital receiving module, a hospital monitoring module and a hospital allocation module. The cloud receiving module is used to acquire, after receiving a service request which is sent by a patient on the terminal app thereof, coordinate information about the patient terminal and a Wi-Fi relay station within a preset range to which the coordinate information belongs. The app-based patient hospital patient management system can not only enhance the health of a patient in the hospital, but can also perform real-time monitoring and information feedback on the movement path and health state of a hospital patient who goes out of the hospital.
Patent WO-2019084898-A1 (WO)
Inventor: AN KAIQIANG
IPC: G06T5/00
Filed: 2017-11-03
Abstract: La présente invention concerne des systèmes et des procédés permettant d'identifier une ou plusieurs routes cibles. Les systèmes peuvent mettre en œuvre les procédés : pour obtenir une carte de chaleur associée à une pluralité de points de suivi de conduite le long d'une pluralité de routes dans une région cible, la pluralité de routes comprenant une ou plusieurs routes cibles et une ou plusieurs routes de référence ; pour obtenir une carte de réseau routier associée auxdites routes de référence dans la région cible ; pour produire une carte de chaleur intermédiaire par élimination de pixels dans la carte de chaleur qui correspondent auxdites routes de référence sur la carte de réseau routier, élimination de pixels d'arrière-plan correspondant à l'arrière-plan de la carte de chaleur, et affinement de la carte de chaleur ; et pour déterminer des informations de coordonnées de début et des informations de coordonnées de fin associées auxdites routes cibles sur la base de la carte de chaleur intermédiaire selon une transformation linéaire.
Patent WO-2019090510-A1 (WO)
Title: 对冲式熔铝炉均流燃烧系统
Inventor: LIU XIAOZHOU
IPC: F23L15/02
Filed: 2017-11-08
Abstract: 一种对冲式熔铝炉均流燃烧系统，包括炉体（1）、第一蓄热单元（10）、第二蓄热单元（20）、及对角地设置在炉体（1）的两端壁上的四个燃料喷枪。第一燃料喷枪（100）位于炉体（1）第一端壁邻近第二蓄热单元（20）一侧，第二燃料喷枪（200）位于炉体（1）第二端壁邻近第一蓄热单元（10）一侧，第三燃料喷枪（300）位于炉体（1）第二端壁邻近第二蓄热单元（20）一侧，第四燃料喷枪（400）位于炉体（1）第一端壁邻近第一蓄热单元（10）一侧。第一燃料喷枪（100）的燃气喷射方向与第二燃料喷枪（200）的燃气喷射方向相平行，轴线之间的间距为H，第三燃料喷枪（300）的燃气喷射方向与第四燃料喷枪（400）的燃气喷射方向相平行，轴线之间的间距为H，轴线之间的间距H设定为炉体（1）宽度的四分之一至十分之一以使得进入炉膛内的燃气相互对冲形成旋流。
Patent WO-2019090681-A1 (WO)
Title: 一种用于电池金属帽的输送机构
Inventor: HE BIXIAN
IPC: B65G47/06
Filed: 2017-11-10
Abstract: 一种用于电池金属帽的输送机构（10），包括：安装底座（100）、入料装置（200）及输送装置（300），输送装置（300）安装在安装底座（100）上，入料装置（200）与输送装置（300）连接。输送装置（300）包括：导向转盘（310）、挡片（320）、限位柱、横梁（330）及出料组件（340），导向转盘（310）安装在安装底座（100）上，挡片（320）部分卷绕于导向转盘（310），导向转盘（310）未卷绕部分形成入料口（311），挡片（320）与导向转盘（310）形成收容腔（350），横梁（330）及限位柱收容于收容腔（350）内，横梁（330）通过限位柱与导向转盘（310）连接。所述输送机构（10）通过设置的安装底座（100）、入料装置（200）及输送装置（300），代替人工送料，实现机械自动送料，从而提高电池封口工艺的工作效率，以及避免电池金属帽被人工损坏。
Patent WO-2018099288-A1 (WO)
Title: 一种3d影像拍摄装置
Inventor: YAN WENJUN
IPC: G03B35/02
Filed: 2017-11-20
Abstract: 一种3D影像拍摄装置，包括主机架(3)，所述主机架(3)上设有第一摄像机(1)、与所述第一摄像机(1)的镜头朝向垂直的第二摄像机(2)，以及前端敞口的视口框架(6)，所述视口框架(6)内设有反光镜片，通过视口框架(6)内的反光镜片将视口框架(6)内分割成两个区域，这样既节省安装空间又方便安装，并在主机架(3)上设置第一驱动组件和第二驱动组件，实现自动化控制调节镜头的聚集与光圈，结构更紧凑简洁，且控制电路板具有无线通讯功能，减少数据线的连接，避免繁琐的接线操作，方便操作，更实用可靠。
Patent WO-2018121300-A1 (WO)
Title: 液晶显示器
Inventor: CHEN YU-JEN
IPC: G09G3/36
Filed: 2017-12-16
Abstract: 一种液晶显示器，包括液晶面板（10）、驱动模块（20），液晶面板（10）包括阵列排布的多个液晶像素，液晶显示器被设置为在相邻两帧中显示同一画面；驱动模块（20）用于在相邻两帧中分别向每个液晶像素提供高低不同的同极性像素电压，以使每个液晶像素的液晶分子偏转；其中在相邻两帧的每一帧中，每个液晶像素的像素电压的高低都与其上下左右相邻的液晶像素的像素电压的高低不同。
Patent WO-2018126940-A1 (WO)
Inventor: ZHANG ZAICHEN
IPC: H04B7/0456
Filed: 2017-12-26
Abstract: The disclosure relates to an electronic device, radio communication apparatus, and radio communication method. In one embodiment, an electronic device utilized at base station side comprises a processing circuit configured to: acquire information of an arrival time difference of diversity signals transmitted from two or more base stations to a mobile terminal; determine, on the basis of the information, a precoding matrix utilized in diversity signal transmission to reduce an impact of the arrival time difference on a diversity gain; and utilize the determined precoding matrix to perform precoding on a signal to be transmitted.
Patent WO-2019127360-A1 (WO)
Inventor: DENG LEI
IPC: B64C1/06
Filed: 2017-12-29
Abstract: Provided is a centre frame applied to an unmanned aerial vehicle, the centre frame comprising a frame assembly (1), wherein the frame assembly (1) comprises multiple frame members (11), the frame members (11) form an integrated structure by means of integral shaping, and the multiple frame members (11) are spliced with one another and form an accommodation space (12); and the accommodation space (12) is used for accommodating replaceable components of the unmanned aerial vehicle, and the replaceable components can be detachably arranged in the accommodation space (12). The centre frame is compact in structure, and has a good structural integrity, thereby facilitating assembly and maintenance.
Patent WO-2019183740-A1 (WO)
Inventor: YU YONGHAI
IPC: H02N11/00
Filed: 2018-03-29
Abstract: A magnetic force potential energy static pressure engine. Two ends of a machine body (1) are equipped with a front end cover (2) and a rear end cover (10), the machine body further comprises a stator (4) and a rotor (3), and the stator (4) is action force permanent magnets (C1, C2, C3) mounted on an inner wall circumference of the machine body (1). A straight rod portion of a pressure guide link mechanism (5) is sheathed within a limiting slot (6) which is mounted on a working wheel (8), arc-shaped reaction force permanent magnets (C4, C5) are embedded on the top of the straight rod portion of the pressure guide link mechanism (5), and the reaction force permanent magnets (C4, C5) face the reaction force permanent magnets (C1, C2, C3) at the same polarity. A vertex below the bending portion of the pressure guide link mechanism (5) is mounted in a limiting force slot (7) on the working wheel (8) and moves with the working wheel (8). The rotor (3) is provided with an output shaft (9), two ends of the output shaft (9) are respectively mounted in bearing holes of the front end cover (2) and the rear end cover (10) by means of bearings, and the working wheel (8) is sheathed on the output shaft (9). The engine has a simple structure, the interaction force and static pressure of the magnetic force directly generate power required for movement, and the generated power is transmitted by means of the output shaft (9), which has no environmental pollution, and the maintenance cost is low.
Patent WO-2019071868-A1 (WO)
Title: Projection device
Inventor: Dai Youna
IPC: G03B21/14
Filed: 2018-01-04
Abstract: The present invention provides a projection device, comprising a housing, a lens, a lens cover, and a switch assembly; the lens cover is rotatable along the switch assembly; the switch assembly has a first state of being initial and a second state of driving the lens cover to stretch in an axial direction; when the switch assembly is in the second state, the projection device is powered on, and when the switch assembly is in the first state, the projection device is powered off. When the projection device having such a structure is to be powered on, the lens cover needs to be pulled outwardly while being rotated to open or being translated to not block the lens so as to power on the projection device, avoiding the misoperation of power on the projection device caused by rotation of the lens cover in the prior art; moreover, when the switch assembly is in the second state, the lens cover is not in contact with the housing, preventing the lens cover from blocking a heat dissipation opening and affecting heat dissipation, improving performance and reliability of the product, providing good user experience.