Subway passenger room television screen detection device convenient for battery replacement

Abstract

According to the subway passenger room television screen detection device convenient for battery replacement, a detachable power supply module is arranged in a battery jar on a detection device body; the power supply module comprises a battery box, a locking piece and a jacking assembly, a carrying cavity is formed in the battery box, and an unlocking sliding block is arranged at the first end of the battery box; the locking piece is movably arranged on the top surface of the battery box, and a locking groove for accommodating the top of the locking piece is formed in the inner side wall of the battery groove; and the jacking assembly comprises a transmission rod, a jacking rod and a connecting rod, the transmission rod can be matched with the unlocking sliding block, the jacking rod is arranged in the carrying cavity in a liftable mode, and the two ends of the connecting rod are rotationally connected with the transmission rod and the jacking rod correspondingly. When the unlocking sliding block moves towards the carrying cavity, the top of the locking piece can be separated from the locking groove to unlock the battery box, then the transmission rod is pushed to enable the jacking rod to ascend to jack up the battery in the carrying cavity, the unlocking sliding block can be operated by one hand to unlock the battery box and jack up the battery, and the operation process of replacing the battery is simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway passenger compartment TV screen detection, and particularly relates to a subway passenger compartment TV screen detection device which is convenient for replacing a battery. Background Technique

[0002] The passenger compartment TV screen is a display screen used in subway trains to display subway line information, operating status and advertisements. Setting TV screens at obvious positions in the subway train passenger compartment can fully display relevant information to passengers. In the subway train passenger compartment, multiple TV screens are often set. Since the TV screen is a vulnerable part and the TV screen needs to be equipped with a variety of signal transmission devices to facilitate the display of various information in a timely manner, in addition to repairing the damaged TV screen, it is also necessary to regularly detect the faults of all TV screens in the subway train passenger compartment.

[0003] In order to improve the maintenance efficiency of the subway train passenger compartment TV screen and avoid damage to the TV screen caused by repeated disassembly and assembly of the TV screen, a movable fault detection device can be used to connect with the TV screen and related functional modules in the subway train passenger compartment, and the TV screen and related functional modules are detected for faults through technical means. Since the number of TV screens in the subway train passenger compartment is often large, when the fault detection device detects the faults of the TV screens one by one, it needs to move continuously between the TV screens. Therefore, in order to ensure the portability of the fault detection device, the battery of the fault detection device often has limited power. How to replace the battery with one hand and quickly to improve the working efficiency of the fault detection device is a problem to be solved. Content of the Utility Model

[0004] In view of this, the utility model aims to provide a subway passenger compartment TV screen detection device which is convenient for replacing a battery to solve the above technical problems. To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A subway passenger compartment TV screen detection device which is convenient for replacing a battery, comprising a detection device body and a power supply module. A battery slot is arranged on the detection device body, and the power supply module is detachably arranged inside the battery slot;

[0006] The power supply module includes: a battery box, a locking member and a jacking assembly. A carrying cavity for accommodating a battery is arranged inside the battery box. An accommodating hole is arranged at the first end of the battery box, and an unlocking slider is arranged in the accommodating hole. Connecting contacts are arranged at the second end of the battery box;

[0007] A through hole communicating with the accommodating hole is further arranged on the top surface of the battery box. The locking member is movably arranged inside the through hole, and a locking groove for accommodating the top of the locking member is arranged on the inner side wall of the battery slot;

[0008] An opening communicating with the carrying cavity is provided inside the accommodation hole. The jacking assembly includes a transmission rod, a jacking rod, and a connecting rod. The transmission rod includes a connecting section and a pushing section that are perpendicular to each other. The connecting section is slidably disposed in the carrying cavity, and the free end of the pushing section is inserted into the accommodation hole along the opening. The jacking rod is vertically movably disposed inside the carrying cavity, and both ends of the connecting rod are rotatably connected to the connecting section and the jacking rod respectively.

[0009] When the unlocking slider moves towards the carrying cavity, the unlocking slider can first disengage the top of the locking member from the locking groove, and then the unlocking slider pushes the transmission rod so that the jacking rod moves upward inside the carrying cavity to jack up the battery inside the carrying cavity.

[0010] Further, an elastic rotating shaft is provided inside the through hole. A central hole is provided at the center of the locking member, and the locking member is connected to the elastic rotating shaft through the central hole.

[0011] Further, a locking convex block is provided inside the locking groove, and a locking hook cooperating with the locking convex block is provided at the top of the locking member.

[0012] Further, a guide rail perpendicular to the bottom surface of the battery box is further provided on the inner side wall of the carrying cavity. The guide rail is located between the first end and the second end of the battery box, and the distance between the guide rail and the first end of the battery box is less than the distance from the second end of the battery box, and the end of the jacking rod is inserted into the guide rail.

[0013] Further, a support rod is further provided inside the carrying cavity between the guide rail and the second end of the battery box. The plane where the axis of the support rod and the axis of the jacking rod are located is parallel to the bottom surface of the carrying cavity.

[0014] Further, a top block is further provided inside the carrying cavity, and the top block and the connection contact are respectively located on opposite side walls inside the carrying cavity. A guiding inclined surface is provided at the top of the top block.

[0015] Further, a base contact is further provided on the inner side wall of the battery slot. When the battery box is locked in the battery slot, the base contact can be in contact with the connection contact on the battery box.

[0016] Further, a limiting block is provided at the second end of the battery box, and a limiting groove for accommodating the limiting block is provided at the top of the side wall of the battery slot near the second end of the battery box; a guiding shaft is further provided at the second end of the battery box, and a guiding groove for accommodating the guiding shaft is provided at the bottom end of the side wall of the battery slot near the second end of the battery box.

[0017] Further, the detection body includes a base and a top cover, the base and the top cover are hinged, a keyboard, a touchpad, and a wire management groove are provided inside the base, and a display screen is provided inside the top cover.

[0018] Furthermore, a locking slope is provided at the top end of the locking member.

[0019] Compared with the prior art, the subway passenger compartment TV screen detection device for facilitating battery replacement of the present utility model has the following advantages:

[0020] (1) A battery slot is provided on the base, and a detachable battery box is provided in the battery slot. When the battery needs to be replaced, the fault detection device can maintain the state where the top cover and the base are opened during operation, directly detach the battery box downward from the battery slot and replace the battery in the battery box, so that the detection device can continue to work, without the need to fasten the top cover and the base and then turn the entire fault detection device over, reducing the operations required for battery replacement, and at the same time not affecting the movement of the fault detection device between the display screens in the subway train passenger compartment;

[0021] (2) The locking hook at the top end of the locking member at the first end of the battery box can be inserted into the locking slot on the base and fit with the top surface of the locking protrusion in the locking slot to lock the battery box. Push the unlocking slider from the first end of the battery box so that the unlocking slider moves towards the second end of the battery box in the receiving hole. The unlocking slider can push the bottom end of the locking member located in the receiving hole to drive the locking member to rotate, so that the locking hook at the top end of the locking member disengages from the top surface of the locking protrusion to unlock the battery box. Continue to press the unlocking slider so that it continues to move towards the second end of the battery box in the receiving hole, which can push the transmission rod to raise the jacking rod and lift one end of the battery. Operating only one unlocking slider can achieve the unlocking of the battery box and lifting the battery in the battery box, which can achieve single-handed operation while improving the speed of taking out the battery;

[0022] (3) The transmission rod provided in the battery box can drive the jacking rod to rise and fall through the connecting rod. When the jacking rod rises, it can jack up the first end of the battery supported thereon, so that the battery is in an inclined posture with one end higher than the other end, which is convenient for quickly taking out the battery and replacing it. The top block at the first end of the battery box can press the battery tightly against the connection contact at the second end of the battery box. A base contact that can contact the connection contact is provided in the battery slot, so that the battery can continuously and stably supply power to the fault detection device through the electrical connection between the connection contact and the base contact;

[0023] (4) The guide shaft provided at the second end of the battery box can be clamped into the guide groove in the battery slot and rotate in the guide groove. Through the rotational cooperation of the guide shaft in the guide groove, during the process of installing the battery box, the rotational direction of the battery box in the battery slot is defined and guided, making it easier for the battery box to be aligned and installed in place. The limiting block provided at the second end of the battery box can be inserted into the limiting groove in the battery slot, and after the battery box is fastened in place, it cooperates with the locking hook to stably lock the battery box in the battery slot to prevent the battery box from falling off during movement. Description of the Drawings

[0024] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0025] Figure 1 It is a top view of a subway passenger compartment TV screen detection device for facilitating battery replacement according to an embodiment of the present invention.

[0026] Figure 2 It is a left view of a subway passenger compartment TV screen detection device for facilitating battery replacement according to an embodiment of the present invention.

[0027] Figure 3 It is a schematic structural diagram after a subway passenger compartment TV screen detection device for facilitating battery replacement according to an embodiment of the present invention is opened.

[0028] Figure 4 It is a partial cross-sectional view of the base of a subway passenger compartment TV screen detection device for facilitating battery replacement according to an embodiment of the present invention.

[0029] Figure 5 It is Figure 4 Another state change schematic diagram of.

[0030] Explanation of reference numerals: 1 - top cover; 2 - handle; 3 - lock; 4 - unlocking slider; 5 - first end of battery box; 6 - base; 7 - display screen; 8 - cable management groove; 9 - keyboard; 10 - touchpad; 11 - locking groove; 12 - locking hook; 13 - locking bump; 14 - through hole; 15 - guide rail; 16 - limiting groove; 17 - limiting block; 18 - guiding groove; 19 - guiding shaft; 20 - second end of battery box; 21 - support rod; 22 - lifting rod; 23 - connecting rod; 24 - connecting section; 25 - pushing section; 26 - accommodating hole; 27 - locking member; 28 - rotating shaft; 29 - top block. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0034] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0035] A subway passenger compartment TV screen detection device facilitating battery replacement, as Figure 1 、 2 、shown in Figure 3, includes a detection body and a power supply module. The user can carry the detection body onto the subway train and connect it to the passenger compartment TV screen for fault detection of the passenger compartment TV screen. A battery slot is provided on the detection body, and the power supply module is detachably arranged in the battery slot. The power supply module can be a battery with a suitable model or a box containing a battery, and the disassembly method of the power supply module can be sliding disassembly or rotational disassembly.

[0036] The power supply module includes a battery box, a locking member 27, and a lifting assembly, as Figure 4 、 5 、shown in Figure, the top of the battery box is provided with an opening, the bottom surface of the battery box is close to the bottom surface of the base, and the first end 5 of the battery box (as Figure 4 、 5The left end shown in the figure) is close to the left side wall of the base. When the battery box is installed in the battery slot, the outer surface of the battery box can closely fit the inner wall of the battery slot, which can prevent liquid and dust from entering the battery box to damage the battery to a certain extent. The battery box in this embodiment is made of plastic material. There is a mounting cavity for accommodating the battery inside the battery box. There is an accommodation hole 26 at the first end 5 of the battery box. The opening of the accommodation hole is located on the end face of the first end of the battery box. An unlocking slider 4 is provided in the accommodation hole 26, and the unlocking slider can slide in the accommodation hole.

[0037] At the second end 20 of the battery box (such as Figure 4 , 5 shown at the right end in the figure) there are connection contacts. The two ends of the connection contacts are respectively located on the side wall of the mounting cavity close to the second end of the battery box and on the end face of the second end of the battery box. The connection contacts are made of conductive material, and the battery can supply power to the detection body through the connection contacts.

[0038] There is also a through hole 14 on the top surface of the battery box that communicates with the accommodation hole. The top end of the through hole is provided on the top surface close to the first end of the battery box, and the bottom end of the through hole communicates with the top end of the accommodation hole. The locking member 27 is movably arranged inside the through hole. There is a locking groove 11 for accommodating the top of the locking member at the position on the top surface of the battery slot close to the first end of the battery box. When the battery box is installed in the battery slot, the top of the locking member can be inserted into the locking groove.

[0039] There is an opening in the accommodation hole that communicates with the mounting cavity. In this embodiment, the two ends of the opening are respectively located in the accommodation hole and in the mounting cavity. The lifting assembly includes a transmission rod, a lifting rod 22 and a connecting rod 23. The transmission rod includes a connecting section 24 and a pushing section 25 that are perpendicular to each other. The connecting section is slidably arranged in the mounting cavity. The free end of the pushing section is inserted into the accommodation hole along the opening. The other end of the pushing section is fixedly connected to the top end of the connecting section. The lifting rod is arranged to be liftable inside the mounting cavity. The two ends of the connecting rod are respectively rotatably connected to the bottom end of the connecting section and the lifting rod. In this embodiment, the lower end of the connecting rod is rotatably connected to the bottom end of the connecting section, the upper end of the connecting rod is rotatably connected to the lifting rod, and the connecting rod is perpendicular to the axis of the lifting rod.

[0040] When the unlocking slider is in the initial position, the user can apply a force to the unlocking slider on the outside of the first end of the battery box so that the unlocking slider slides in the direction of the mounting cavity. When the unlocking slider moves in the direction of the mounting cavity, the unlocking slider can first disengage the top of the locking member from the locking groove to release the locked state of the battery box, facilitating the disassembly of the battery box. As the unlocking slider continues to move in the direction of the mounting cavity, the unlocking slider can push the transmission rod. At this time, the movement of the transmission rod will be transmitted to the lifting rod through the connecting rod, so that the lifting rod performs a rising action. By the rising action of the lifting rod, the battery can be lifted so that the battery is exposed, facilitating the user to quickly and conveniently take out the battery.

[0041] Optionally, to enable the locking member to be conveniently switched between the locked state and the unlocked state inside the through hole, the locking member is rotatably arranged in the through hole. An elastic rotating shaft 18 is provided inside the through hole. The locking member is connected to the elastic rotating shaft. When the top end of the locking member is inserted into the locking groove, the battery box can be locked under the action of the elastic rotating shaft. The bottom end of the locking member is inserted into the accommodating cavity. When the unlocking slider moves and triggers the bottom end of the locking member to move, the top end of the locking member disengages from the locking groove, releasing the lock on the battery box.

[0042] To enhance the locking effect of the locking member on the battery box, a locking protrusion 13 may be provided on the inner wall of the locking groove close to the mounting cavity. A locking hook 12 may be provided at the top end of the locking member. The locking hook can be inserted into the locking groove and cooperate with the locking protrusion to lock the first end of the battery box. In addition, to enable the top end of the locking member to be smoothly inserted into the locking groove, a locking inclined surface is further provided at the top end of the locking member. During the process of inserting the top end of the locking member into the locking groove, the locking inclined surface can contact the locking protrusion, and the locking protrusion can make the top end of the locking member rotate away from the protrusion by abutting against the locking inclined surface. The locking hook can be smoothly inserted into the locking groove under the guidance of the locking inclined surface and cooperate with the locking protrusion to lock the battery box.

[0043] To guide the lifting rod to perform lifting movement in the mounting cavity, guide rails 15 perpendicular to the bottom surface of the battery box are further provided on the inner side wall of the mounting cavity. The guide rails are located between the first end and the second end of the battery box. In this embodiment, there are two guide rails, which are respectively arranged on two opposite inner side walls of the mounting cavity, and both guide rails are located on the two inner side walls between the first end and the second end of the battery box. The guide rails are perpendicular to the bottom surface of the battery box. The distance between the guide rail and the first end of the battery box is less than the distance from the second end of the battery box. Both ends of the lifting rod 22 are inserted into the guide rails, and the axis direction of the lifting rod is parallel to the bottom surface of the battery box. When the lifting rod moves upward, the surface of the lifting rod abuts against the inner wall of the guide rail and rises under the guidance of the inner wall. At this time, the lifting rod can support one end of the battery and stably lift one end of the battery under the guidance of the guide rail.

[0044] Optionally, to stably support the battery inside the mounting cavity, a support rod 21 is further provided in the mounting cavity between the guide rail and the second end of the battery box. Both ends of the support rod are respectively connected to the inner wall of the mounting cavity. The axis of the support rod is parallel to the axis of the lifting rod, and the plane where the axis of the support rod and the axis of the lifting rod are located is parallel to the bottom surface of the mounting cavity. The support rod and the lifting rod can respectively support both ends of the battery so that the battery can be stably placed in the mounting cavity.

[0045] In order to make the battery in close contact with the connection contacts, a top block 29 is provided in the carrying cavity. The top block and the connection contacts are located on opposite side walls in the carrying cavity, respectively. A guide slope is provided on the top of the top block. The guide slope is used to press against one end of the battery when the battery is placed in the carrying cavity so that the battery gradually presses against the connection contacts during the process of being placed in the carrying cavity. After the battery is installed in place, the first end of the battery leaves the guide slope and is supported by the top block. At this time, the electrode of the battery can be in close contact with one end of the connection contact located on the side wall of the carrying cavity. In addition, a base contact is provided on the side wall near the second end of the battery box in the battery slot. When the battery box is locked in the battery slot, the connection contact is in close contact with the base contact, so that the battery can supply power to the detection device body.

[0046] In order to lock the battery box in the battery slot more stably, a limit block 17 may be provided at the second end of the battery box, and a limit groove 16 for accommodating the limit block may be provided on the inner side wall of the battery slot. When the battery box is installed in the battery slot, the limit block is inserted into the limit groove to lock the second end of the battery box. In addition, to facilitate the installation of the battery box, a guide shaft 19 may be provided at the second end of the battery box. The axis of the guide shaft is parallel to the bottom surface of the battery box. A guide groove 18 for accommodating the guide shaft is provided on the inner side wall of the battery slot. The guide shaft can be inserted into the guide groove, and the guide shaft can rotate in the guide groove. When installing the battery box in the battery slot, the guide shaft can cooperate with the guide groove to guide the direction of rotation of the battery box, so that the battery box is easier to install in the battery box. When the battery box is removed from the battery slot, the limit block falls out of the limit groove.

[0047] An optional implementation of this embodiment is that in order to make the detection body easy to carry, the detection body can be designed in the form of a suitcase. The detection body includes a top cover 1 and a base 6. One end of the top cover and the base are hinged, and the top cover can be buckled on the base to form a suitcase. The other ends of the top cover and the base are respectively provided with matching locks 3. The locks can lock the top cover and the base after the top cover is buckled on the base so that the two cannot be separated. The other end of the base is also provided with a handle 2. The handle can easily lift the suitcase formed by the top cover and the base buckled together, and the lock can ensure that the top cover and the base will not be separated during movement. In this embodiment, the outer surfaces of the top cover and the base are both hard shells. In order to reduce the weight of the detection device, the material of the hard shell can be ABS engineering plastics.

[0048] In order to achieve the function of detecting the faults of the main body, a display screen 7 is provided inside the top cover. The display surface of the display screen is embedded in the inner panel of the top cover. The top cover can be flipped open from the base to read the content on the display screen. The display screen can be a common display screen or a touch screen with touch and click functions. Inside the base, there are a communication module, a control module, and a data processing module. The communication module includes communication cables and display cables. The communication cable is provided with an input interface and an output interface. The input interface can be connected to the TV screen port in the passenger compartment of the subway train to receive the output signal of the TV screen in the passenger compartment. The output interface can be connected to an external industrial computer or other devices to output the detection result of the TV screen in the passenger compartment to the industrial computer or external devices for further analysis and report generation. The display cable is used to connect to the display screen to supply power to the display screen and output a display signal to the display screen. The control module is used to receive the operation instructions of the user and send the instruction signal to the data processing module. The control module can also receive the control instructions sent by the data processing module and send the control instructions to the TV screen through the communication cable. The data processing module is used to receive the instruction signal of the control module and the output signal of the TV screen, and analyze the instruction signal and the output signal of the TV screen. The data processing module can convert the instruction signal into a control instruction and send it to the TV screen through the communication cable. The data processing module can also detect the faults of the TV screen through the output signal of the TV screen.

[0049] To facilitate the operation of the detection main body, a keyboard 9 and a touchpad 10 are also provided on the inner panel of the base. After the top cover and the base are opened, the keyboard and the touchpad can be operated. When the top cover and the base are buckled, there is a gap between the display screen and the keyboard and the touchpad. On the inner panel of the base above the keyboard and the touchpad (in the direction shown in Figure 3 ), a cable management groove 8 for storing the communication cable is also provided. One end of the communication cable is provided with an output interface and an output interface. The other end of the communication cable is connected to the control module and the data processing module. A winding post is provided in the cable management groove, and the communication cable can be wound around the winding post so that the communication cable will not be complicatedly wound when stored in the cable management groove, facilitating the quick removal of the cable. The battery slot is provided on the bottom surface of the base, and the power supply module is detachably arranged in the battery slot. The power supply module is used to supply power to the communication module, the control module, the data processing module, and the TV screen.

[0050] The effects of the above solution are described below:

[0051] A detachable battery box is provided in the battery slot on the base. A battery is placed in the carrying cavity inside the battery box. When replacing the battery, there is no need to fasten the top cover and the base and then turn the whole fault detection device over. The state where the top cover and the base are opened when the fault detection device is working can be maintained, and the battery box can be directly detached downward from the battery slot and the battery inside the battery box can be replaced. This reduces the operations required for battery replacement, enables the battery replacement process to be carried out with one hand, and does not affect the movement of the fault detection device among the display screens in the passenger compartments of subway trains. The locking hook can be inserted into the locking slot on the base and cooperate with the locking protrusion in the locking slot to lock the battery box. The user can push the unlocking slider to unlock the battery box so that the battery box can be detached from the battery slot, and continue to push the unlocking slider to make the lifting rod lift one end of the battery. Operating only one unlocking slider can achieve the unlocking of the battery box and the lifting of the battery inside the battery box, simplifying the difficulty of battery replacement and enabling one-handed operation.

[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A subway passenger compartment TV screen detection device facilitating battery replacement, characterized in that: It includes a detection device body and a power supply module. A battery slot is provided on the detection device body, and the power supply module is detachably arranged inside the battery slot; The power supply module includes: a battery box, a locking member (27) and a lifting assembly. An accommodation cavity for accommodating a battery is provided inside the battery box. An accommodation hole (26) is provided at the first end (5) of the battery box, and an unlocking slider (4) is provided in the accommodation hole (26). Connection contacts are provided at the second end (20) of the battery box; A through hole (14) communicating with the accommodation hole is further provided on the top surface of the battery box. The locking member (27) is movably arranged inside the through hole (14), and a locking groove (11) for accommodating the top of the locking member (27) is provided on the inner side wall of the battery slot; An opening communicating with the accommodation cavity is provided inside the accommodation hole (26). The lifting assembly includes a transmission rod, a lifting rod (22) and a connecting rod (23). The transmission rod includes a connecting section (24) and a pushing section (25) that are perpendicular to each other. The connecting section (24) is slidably arranged in the accommodation cavity. The free end of the pushing section is inserted into the accommodation hole along the opening. The lifting rod (22) is arranged in the accommodation cavity in a liftable manner. Two ends of the connecting rod (23) are respectively rotatably connected to the connecting section (24) and the lifting rod (22); When the unlocking slider (4) moves towards the accommodation cavity, the unlocking slider (4) can first disengage the top of the locking member (27) from the locking groove (11), and then the unlocking slider (4) pushes the transmission rod so that the lifting rod (22) moves upward in the accommodation cavity to lift the battery inside the accommodation cavity.

2. The subway passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, wherein: An elastic rotating shaft (28) is provided inside the through hole (14), and the center of the locking member (27) is connected to the elastic rotating shaft (28).

3. The subway car passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, wherein: A locking protrusion (13) is provided in the locking groove (11), and a locking hook (12) cooperating with the locking protrusion (13) is provided at the top of the locking member (27).

4. The subway car passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, wherein: A guide rail (15) perpendicular to the bottom surface of the battery box is further provided on the inner side wall of the accommodation cavity. The guide rail (15) is located between the first end (5) and the second end (20) of the battery box, and the distance between the guide rail (15) and the first end (5) of the battery box is less than the distance from the second end (20) of the battery box. The end of the lifting rod (22) is inserted into the guide rail (15).

5. The subway car passenger compartment TV screen detection device for facilitating battery replacement according to claim 4, wherein: A support rod (21) is further provided in the accommodation cavity between the guide rail (15) and the second end (20) of the battery box. The plane where the axis of the support rod (21) and the axis of the lifting rod (22) are located is parallel to the bottom surface of the accommodation cavity.

6. The detection device for subway passenger compartment TV screens that facilitates battery replacement according to claim 1, characterized in that: A top block (29) is further provided in the accommodation cavity, and the top block and the connection contacts are respectively located on opposite side walls in the accommodation cavity. A guiding inclined surface is provided at the top of the top block (29).

7. The subway passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, characterized in that: Base contacts are further provided on the inner side wall of the battery slot. When the battery box is locked in the battery slot, the base contacts can be in contact with the connection contacts on the battery box.

8. The subway car passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, wherein: A limiting block (17) is provided at the second end (20) of the battery box, and a limiting groove (16) for accommodating the limiting block (17) is provided at the top of the side wall of the battery slot near the second end (20) of the battery box; a guiding shaft (19) is further provided at the second end (20) of the battery box, and a guiding groove (18) for accommodating the guiding shaft (19) is provided at the bottom end of the side wall of the battery slot near the second end (20) of the battery box.

9. The subway car passenger compartment TV screen detection device for facilitating battery replacement according to claim 1, wherein: The detection body includes a base (6) and a top cover (1), the base (6) and the top cover (1) are hinged, a keyboard (9), a touchpad (10) and a wire management groove (8) are provided in the base (6), and a display screen (7) is provided in the top cover (1).

10. The subway passenger compartment TV screen detection device for facilitating battery replacement according to claim 3, wherein: The top end of the locking member (27) is provided with a locking inclined surface.

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