CN113178130A - Display device - Google Patents
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- CN113178130A CN113178130A CN202110311953.XA CN202110311953A CN113178130A CN 113178130 A CN113178130 A CN 113178130A CN 202110311953 A CN202110311953 A CN 202110311953A CN 113178130 A CN113178130 A CN 113178130A
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- display device
- contact
- alarm
- cover plate
- circuit board
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- 239000002184 metal Substances 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 206010014357 Electric shock Diseases 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- ZRHANBBTXQZFSP-UHFFFAOYSA-M potassium;4-amino-3,5,6-trichloropyridine-2-carboxylate Chemical compound [K+].NC1=C(Cl)C(Cl)=NC(C([O-])=O)=C1Cl ZRHANBBTXQZFSP-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
Abstract
The application discloses a display device, which comprises a shell, a display panel and a printed circuit board, wherein the display panel is arranged in the shell, the printed circuit board is arranged in the shell, and the printed circuit board is electrically connected with the display panel and supplies power to the display panel; the housing includes a detachable assembly that disconnects power to the display panel when the detachable assembly is detached from the housing. This application realizes breaking of electricity after display device disassembles through above mode.
Description
Technical Field
The application relates to the technical field of display devices, in particular to a display device.
Background
With the development of times and the technological progress, more and more people use electronic products and become necessities of life of people, so that the use frequency of the electronic products is higher and higher, and the loss of electronic devices is accelerated. If the electronic product is in failure or damaged, the electronic product is usually required to be disassembled for maintenance, and a lot of electronic products are also easy to disassemble, so that the possibility of disassembling and maintaining by users privately exists. In the process of private disassembly, as the private disassembly is unprofessional, when an individual disconnects the electronic product privately, the risk of electric shock exists.
The situation of this kind of disassembling privately not only exists in the use of electronic product, also exists in various display devices, and at present usually, the manufacturer when the product leaves the factory, pastes on the screw lock attaches the mouth and pastes the anti-disassembly label, pastes and to prevent the anti-disassembly label that also exists the user and tear, and the situation of disassembling privately can not effectively prevent the privately disassembling, also can not avoid the risk of disassembling the person's electric shock.
Disclosure of Invention
The utility model provides a display device, display device can the auto-power-off when being disassembled, realizes disassembling the outage, effectively avoids electrocuteeing.
The application discloses a display device, which comprises a shell, a display panel and a printed circuit board; the display panel is arranged in the shell; the printed circuit board is arranged in the shell, is electrically connected with the display panel and supplies power to the display panel; the shell comprises a detachable component which is detachably connected with the shell; the printed circuit board disconnects the power to the display panel when the detachable assembly is detached from the housing.
Optionally, the housing includes a back plate and a rear shell, the detachable component is the rear shell, and the rear shell is detachably connected to the back plate; the printed circuit board is provided with a first contact and a second contact, and the rear shell is provided with a trigger structure; when the rear shell and the back plate are fixed together, the first contact and the second contact are electrically connected through the trigger structure, and the main circuit of the printed circuit board is conducted; when the rear shell and the back plate are detached and separated, the first contact and the second contact are disconnected, and the main circuit of the printed circuit board is not conducted so as to disconnect the power supply of the display panel.
Optionally, a fixing piece is arranged on the rear shell and used for detachably connecting the rear shell and the back plate together; the display device further comprises a cover plate, and the cover plate is connected with the rear shell and used for covering the fixing piece.
Optionally, the printed circuit board further includes a third contact, the rear case is further provided with an alarm triggering structure, the display device detects the conduction condition of the first contact, the second contact, the third contact, the triggering structure and the alarm triggering structure, and when the conduction condition meets a preset requirement, the display device gives an alarm.
Optionally, a protrusion is arranged on the cover plate, and the protrusion is used for abutting against the trigger structure or the alarm trigger structure; when the cover plate covers and shields the fixing piece, the protrusion is abutted against the trigger structure or the alarm trigger structure, and the trigger structure is disconnected with the alarm trigger structure; when the cover plate is separated from the fixing piece, the protrusion is separated from the trigger structure or the alarm trigger structure, the trigger structure is electrically connected with the alarm trigger structure, and then the preset requirement is judged to be met and the display device gives an alarm.
Optionally, a metal sheet conductive head is arranged on the cover plate and used for abutting against the trigger structure or the alarm trigger structure; when the cover plate covers the fixing piece, the metal sheet conductive head is abutted to the triggering structure and the alarm triggering structure at the same time, and the triggering structure and the alarm triggering structure are electrically connected through the metal sheet conductive head; when the cover plate is separated from the fixing piece, the metal sheet conductive head is separated from the trigger structure and the alarm trigger structure, the trigger structure and the alarm trigger structure are disconnected, the preset requirements are met, and the display device sends out alarm information.
Optionally, a groove is formed in the rear shell, and the shape of the groove is matched with that of the cover plate; the fixing piece is arranged at the bottom of the groove, and the cover plate is embedded into the groove to shield the fixing piece.
Optionally, the display device further includes an elastic member, and the rear housing is elastically connected to the cover plate through the elastic member, so as to reset the cover plate.
Optionally, the housing includes a front frame and a support structure, the detachable component is the support structure, and the support structure is detachably connected to the front frame; the printed circuit board is provided with a first contact and a second contact, and the supporting structure is provided with a triggering structure; when the front frame and the supporting structure are fixed together, the first contact and the second contact are electrically connected through the trigger structure, and the main circuit of the printed circuit board is conducted; when the supporting structure is detached from the front frame, the first contact and the second contact are disconnected, and the main circuit of the printed circuit board is not conducted to disconnect the power supply of the display panel.
Optionally, the display device further comprises a recording component, the recording component is electrically connected with the printed circuit board, and the recording component is used for recording the electric conduction information on the printed circuit board.
Compared with the scheme that when the detachable assembly is detached from the shell, the display panel is electrified, so that electric shock risks are caused. According to the display device, the state of the detachable assembly is associated with the power supply of the display panel, when the display panel detects that the detachable assembly is detached, the display panel is disconnected from the power supply, and the display panel is not electrified, so that the risk of electric shock can be well avoided; and when display panel during operation, if can dismantle the subassembly and be dismantled, display panel will no longer work and display screen, has played the effect of reminding, tells user's casing that can dismantle the subassembly and has been dismantled, needs vigilant.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a display device according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of a display device according to an embodiment of the present application;
FIG. 3 is a schematic view of the assembly of the rear housing and the back plate according to the embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a state where a rear case is separated from a rear plate according to an embodiment of the present application;
FIG. 5 is an enlarged view of a portion of another display device according to an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating the closing and opening of the cover plate according to the embodiment of the present application;
FIG. 7 is a schematic illustration of a cover closing and opening comparison of another embodiment of the present application;
FIG. 8 is a schematic view of another display device according to an embodiment of the present application;
100, a display device; 200. a printed circuit board; 210. a first contact; 220. a second contact; 230. a third contact; 300. a display panel; 400. a housing; 410. a removable assembly; 411. a trigger structure; 412 an alarm triggering mechanism; 413. a spring plate; 414. a fixing member; 420. a rear housing; 430. a back plate; 500. a cover plate; 510. a protrusion; 520. a metal sheet conductive head; 530. a bevel; 540. an anti-slip groove; 600. an elastic member; 700. and recording the component.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application is described in detail below with reference to the figures and alternative embodiments.
Fig. 1 is a schematic view of a display device according to an embodiment of the present application, and referring to fig. 1, a display device 100 includes a housing 400, a display panel 300, a printed circuit board 200, and a detachable assembly 410; the display panel 300 is disposed within the case 400; a printed circuit board 200 disposed in the housing 400, electrically connected to the display panel 300, and supplying power to the display panel 300; the housing 400 comprises a detachable component 410, and the detachable component 410 is detachably connected with the housing 400; when the detachable assembly 410 is detached from the housing 400, the printed circuit board 200 disconnects the power supply of the display panel 300.
The display panel 300 is electrified to cause an electric shock risk with respect to a scheme when the detachable assembly 410 is detached from the housing 400. According to the display device 100, the state of the detachable component 410 is associated with the power supply of the display panel 300, the printed circuit board 200 is connected with an independent power supply, the independent power supply supplies power to the display panel 300, when the display panel 300 detects that the detachable component 410 is detached, the printed circuit board 200 is disconnected from the independent power supply, the display panel 300 is disconnected from the power supply, and the display panel 300 is not electrified, so that the risk of electric shock can be well avoided; when the display panel 300 is operated, if the detachable component 410 is detached, the display panel 300 will not operate any more and display a picture, which plays a role of reminding the user that the detachable component 410 of the housing 400 is detached and needs to be alerted.
The implementation mode of disassembling and powering off can be adjusted according to practical situations, and is within the protection scope of our own as long as the technical idea is met, and some implementation modes are described in detail as follows:
fig. 2 is a partial enlarged view of a display device according to an embodiment of the present application, and referring to fig. 2, it can be seen from fig. 1 that: the housing 400 comprises a back plate 430 and a rear shell 420, the detachable component 410 is the rear shell 420, and the rear shell 420 is detachably connected with the back plate 430; a first contact 210 and a second contact 220 are arranged on the printed circuit board 200, and a trigger structure 411 is arranged on the rear shell 420; when the rear case 420 and the back plate 430 are fixed together, the first contact 210 and the second contact 220 are electrically connected through the trigger structure 411, and the main circuit of the printed circuit board 200 is conducted; when the rear case 420 is detached from the rear panel 430, the first contact 210 and the second contact 220 are disconnected, and the main circuit of the pcb 200 is not conducted to disconnect the power supply of the display panel 300, so that the display panel 300 does not operate. In this embodiment, the detachable module 410 is a rear case 420, the display panel 300 may be fixed on the back plate 430 and/or the rear case 420, the rear case 420 is detachable, the trigger structure 411 is disposed on the rear case 420, the printed circuit board 200 is disposed with the first contact 210 and the second contact 220, the first contact 210 and the second contact 220 are electrically connected to the main circuit, when the rear case 420 and the back plate 430 are fixedly mounted on the display device 100, the first contact 210 and the second contact 220 are electrically conducted through the trigger structure 411, the main circuit of the printed circuit board 200 is conducted, and when the rear case 420 is detached, the first contact 210 and the second contact 220 are disconnected from the trigger structure 411, the main circuit of the printed circuit board 200 is disconnected, so that the power supply of the display panel 300 is disconnected, and the electric shock risk is better avoided.
The private removal of the housing 400 may not only cause an electric shock risk, but also may cause damage to components inside the display panel 300 or damage to the housing 400 of the display device 100, and further may not allow the display device 100 to be maintained when it is sent for professional maintenance.
Fig. 3 is a schematic assembly diagram of a rear housing and a back plate according to an embodiment of the present application, and referring to fig. 3, as can be seen from fig. 1 and fig. 2, a fixing member 414 is disposed on the rear housing 420 and is used for detachably connecting the rear housing 420 and the back plate 430 together; the display device 100 further includes a cover plate 500, and the cover plate 500 is connected to the rear case 420 and covers the fixing member 414. The fixing element 414 is generally covered by the cover plate 500, and is not exposed to the outside, and the fixing element 414 is hidden, so that the fixing element 414 is not easy to find when a user wants to dismantle the fixing element 414; meanwhile, when the display device 100 fails, the disassembling person needs to remove the cover plate 500 to disassemble the fixing member 414, so that the rear case 420 is separated from the back plate 430, the components inside the display device 100 are maintained, the disassembling step is added by arranging the cover plate 500, the disassembling difficulty is improved, and the disassembling prevention effect of the display device 100 is further improved.
Further, in order to make the rear case 420 more difficult to disassemble, the following design can be made: the rear case 420 may be provided with a groove, which is matched with the shape of the cover plate 500; the fixing member 414 is disposed at the bottom of the groove, and when the cover plate 500 is mounted to the rear case 420, the cover plate 500 is inserted into the groove, shielding the fixing member 414. In addition, the groove is formed in the rear shell 420, so that the cover plate 500 is not easy to take out of the rear shell 420, the difficulty in disassembling the rear shell 420 is increased, and the effect of preventing the private disassembly is achieved; the thickness of the cover plate 500 is equal to the depth of the groove, and the upper surface of the embedded rear cover plate 500 and the outer surface of the rear shell 420 are in the same plane; the cover plate 500 is mounted on the rear case 420 without having an unnecessary protruding portion, so that the whole rear case 420 looks more integrated, and the aesthetic appearance of the whole display apparatus 100 is improved. The rear shell 420 is not provided with a groove, so that the anti-disassembly effect can be met by only covering the fixing piece 414 when the cover plate 500 covers the rear shell 420; the groove is provided, so that the cover plate 500 is prevented from being disassembled, and the appearance of the rear shell 420 is not affected.
The surface of the cover plate 500, which is away from the triggering structure 411 and contacts with the groove of the rear case 420, is a slope 530, and the cover plate 500 can slide along the extending direction of the slope 530. When the display device 100 is out of order and needs to be maintained, a maintenance person can slide the cover plate 500 along the extending direction of the inclined surface 530, slide the cover plate 500 out of the groove, expose the fixing member 414, and detach the rear case 420 through the fixing member 414, so that the maintenance person can detach the display device conveniently. The upper surface of the cover plate 500 may be further provided with an anti-slip groove 540, the anti-slip groove 540 is a rectangular groove, the anti-slip groove 540 may be one or more, a maintenance person may extend a finger into the anti-slip groove 540 to buckle the cover plate 500, and meanwhile, the anti-slip groove 540 increases the force of the finger, and the maintenance person may more easily slip the cover plate 500 out of the groove of the rear case 420. The anti-slip groove 540 may also be a circular groove, which can also achieve the above-mentioned effects, and is not described in detail herein.
The display device 100 may further include an elastic member 600, the rear case 420 and the cover plate 500 are elastically connected by the elastic member 600, and the elastic member 600 is used to reset the cover plate 500. The elastic member 600 may be a spring, the cover plate 500 is elastically connected to the rear case 420 through the spring, the cover plate 500 slides out to expose the fixing member 414 at a certain distance, the cover plate 500 is reset to the groove through the spring, the cover plate 500 is prevented from falling off from the rear case 420 under the action of external force on the display device 100, the cover plate 500 is prevented from being lost, and the integrity of the components of the display device 100 is ensured. In addition, the elastic element 600 may also be other elastic mechanisms capable of achieving resilient return, such as plastic or metal elastic pieces, elastic polymer materials, folding flexible link mechanisms, etc., which all have the effects of elastically connecting the cover plate 500 with the rear housing 420 and returning the cover plate 500 to the groove of the rear housing 420 through elasticity.
Fig. 4 is a schematic diagram illustrating a state that the back cover is separated from the back plate according to an embodiment of the present invention, referring to fig. 4, and referring to fig. 1 to 3, when a user removes the cover plate 500 from the recess of the back cover 420 to expose the fixing member 414 on the back cover 420, and wants to further disassemble the back cover 420, the fixing member 414 is unscrewed, and the back cover 420 is removed to separate the back cover 420 from the back plate 430 and the printed circuit board 200; at this time, all the first contact 210, the second contact 220, and the third contact 230 on the printed circuit board 200 are disconnected, and the main circuit of the display device 100 is automatically disconnected, so that the slow discharge circuit of the main capacitor is turned on. The user disassembles display device 100's in-process, the main circuit disconnection, and simultaneously, the return circuit that discharges of main capacitor switches on, and the circuit that hangs certain impedance is switched on to main capacitor two poles of the earth logic this moment, can realize discharging of slow point a little bit, can put the electric charge that probably arrives the people with electricity in this in-process, and the user touches where this time also can not electrocute, has avoided the risk that the person of disassembling electrocuted.
Fig. 5 is a partially enlarged view of another display device according to an embodiment of the present application, and as can be seen from fig. 5 and in conjunction with fig. 1 to 4, when the rear case 420 is detached, an alarm can be given in addition to disconnecting the main circuit of the printed circuit board 200, specifically, the printed circuit board 200 further includes a third contact 230, the rear case 420 is further provided with an alarm triggering structure 412, the display device 100 detects conduction conditions of the first contact 210, the second contact 220, the third contact 230, the triggering structure 411, and the alarm triggering structure 412, and when the conduction conditions meet a preset requirement, the display device 100 gives an alarm.
In the alarm related design, whether to alarm or not is judged by detecting the electrical conduction relationship among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412, or the display panel 300 is controlled to display a corresponding alarm picture; specifically, the detection can be independently completed through the layout of the circuit, or can be performed through the control chip, or can be performed by additionally arranging a logic circuit, and the logic circuit controls the display device 100 to send out an alarm or controls the display panel 300 to display a corresponding alarm picture by judging the electrical connection change among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412.
The triggering structure 411 and the alarm triggering structure 412 may be both conductive sheets fixed on the rear case 420, a contact surface of the conductive sheet of the triggering structure 411 close to the printed circuit board 200 is a long-strip structure (may be a rectangular structure), and a length of the long-strip structure is greater than or equal to a distance between the first contact 210 and the second contact 220, and the conductive sheets may be fixed on the rear case 420 through rivets (may be fixed on a surface of the rear case 420 close to the printed circuit board 200, or may be fixed on a side surface of the rear case 420); the contact surface of the conductive plate of the alarm triggering structure 412 close to the printed circuit board 200 is relatively small (may be a square structure), and matches with the shape of the third contact 230, and the conductive plate of the alarm triggering structure 412 is also fixed on a surface of the rear case 420 close to the printed circuit board 200 or a side surface of the rear case 420 by rivets.
Specifically, the method comprises the following steps:
fig. 6 is a schematic diagram illustrating the closing and opening of the cover plate according to an embodiment of the present application, and referring to fig. 6, as can be seen from fig. 1 to 5, a protrusion 510 is disposed on the cover plate 500, and the protrusion 510 is configured to abut against the triggering structure 411 or the alarm triggering structure 412; when the cover plate 500 covers and covers the fixing part 414, the protrusion 510 abuts against the trigger structure 411 or the alarm trigger structure 412, and the trigger structure 411 and the alarm trigger structure 412 are disconnected; when the cover plate 500 is separated from the fixing member 414, the protrusion 510 is separated from the triggering structure 411 or the alarm triggering structure 412, and the triggering structure 411 and the alarm triggering structure 412 are electrically connected, it is determined that a preset requirement is met and the display device 100 sends an alarm.
Taking the case that the protrusion 510 abuts against the alarm triggering structure 412 as an example, in fig. 6, the upper diagram is a state diagram when the cover plate 500 covers the shielding fixing member 414; the next figure is a state diagram when the cover plate 500 is opened to expose the fixing member 414, when the cover plate 500 is closed and the fixing member 414 is shielded, the protrusion 510 abuts against the conductive sheet of the alarm triggering structure 412, so that a gap exists between the alarm triggering structure 412 and the triggering structure 411, and the alarm triggering structure 412 and the triggering structure 411 are disconnected; when the cover 500 is opened and the fixing member 414 is exposed, the protrusion 510 is separated from the alarm triggering structure 412, the conductive sheet of the alarm triggering structure 412 is abutted against the alarm triggering structure 412, and the triggering structure 411 and the alarm triggering structure 412 are electrically connected.
In the alarm related design of the present embodiment, whether to alarm or not is determined by detecting the electrical conduction relationship among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412, or the display panel 300 is controlled to display a corresponding alarm picture; specifically, the detection can be independently completed through the layout of the circuit, can be performed through the control chip, and can also be performed through adding a logic circuit, wherein the logic circuit controls the display device 100 to send out an alarm or controls the display panel 300 to display a corresponding alarm picture by judging that five points among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412 are mutually conducted; when the alarm triggering structure 412 is disconnected from the triggering structure 411, if the first contact 210, the second contact 220 and the triggering structure 411 are conducted with each other (at this time, the rear case 420 is mounted on the back plate 430), the main circuit of the printed circuit board 200 is conducted, and if the first contact 210, the second contact 220 and the triggering structure 411 are not conducted with each other (at this time, the rear case 420 is detached or loosened from the back plate 430), the main circuit of the printed circuit board 200 is disconnected.
Specifically, the alarm triggering structure 412 or the triggering structure 411 is a conductive structure, and may be an elastic sheet 413 fixed on the rear case 420, taking the alarm triggering structure 412 as an example, the elastic sheet 413 extends towards the triggering structure 411, and the length of the elastic sheet 413 is sufficient to abut against the triggering structure 411: that is, one end of the elastic sheet 413 is fixedly connected with the vertical edge of the alarm triggering structure 412 through a rivet, the other end of the elastic sheet 413 is flexibly turned over through the rivet fixing end, and when the elastic sheet 413 is turned over to abut against the triggering structure 411, the triggering structure 411 and the alarm triggering structure 412 are electrically conducted.
Fig. 7 is a schematic diagram illustrating a cover plate covering and uncovering comparison according to another embodiment of the present application, and referring to fig. 7, as can be seen from fig. 1 to 5, a metal sheet conductive head 520 is disposed on the cover plate 500 for abutting against the triggering structure 411 or the alarm triggering structure 412; when the cover plate 500 covers the fixing member 414, the metal sheet conductive head 520 abuts against the triggering structure 411 and the alarm triggering structure 412 at the same time, and the triggering structure 411 and the alarm triggering structure 412 are electrically connected through the metal sheet conductive head 520; when the cover plate 500 is separated from the fixing member 414, the metal sheet conductive head 520 is separated from the triggering structure 411 and the alarm triggering structure 412, and the triggering structure 411 and the alarm triggering structure 412 are disconnected, it is determined that the preset requirement is met and the display device 100 sends an alarm.
Taking the case that the metal sheet conductive head 520 abuts against the triggering structure 411 and the alarm triggering structure 412 at the same time as an example, in fig. 7, the upper diagram is a state diagram when the cover plate 500 is covered with the shielding fixing member 414; the next figure is a state diagram when the cover plate 500 is opened to expose the fixing element 414, when the cover plate 500 is closed and the fixing element 414 is shielded, the metal sheet conductive head 520 of the cover plate 500 abuts against the alarm triggering structure 412 and the triggering structure 411 at the same time, and the triggering structure 411 and the alarm triggering structure 412 are electrically connected; when the cover 500 is opened and the fixing member 414 is exposed, the conductive metal sheet head 520 is separated from the alarm triggering structure 412 and the triggering structure 411 at the same time, and the triggering structure 411 and the alarm triggering structure 412 are disconnected.
In the alarm related design of the present embodiment, whether to alarm or not is determined by detecting the electrical conduction relationship among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412, or the display panel 300 is controlled to display a corresponding alarm picture; specifically, the detection can be independently completed through the layout of the circuit, can be performed through a control chip, and can also be performed through adding a logic circuit, wherein when the logic circuit judges that five points among the first contact 210, the second contact 220, the third contact 230, the trigger structure 411 and the alarm trigger structure 412 are mutually conducted, the rear shell is installed on the back plate; when the alarm triggering structure 412 is disconnected from the triggering structure 411, if the first contact 210, the second contact 220 and the triggering structure 411 are conducted with each other (at this time, the rear case 420 is mounted on the back plate 430), the main circuit of the printed circuit board 200 is conducted to control the display device 100 to send an alarm or control the display panel 300 to display a corresponding alarm picture; if the first contact 210, the second contact 220 and the trigger structure 411 are not conducted with each other (at this time, the rear case 420 is detached or loosened from the back plate 430), the main circuit of the pcb 200 is disconnected.
Specifically, the alarm triggering structure 412 or the triggering structure 411 is a conductive structure, a gap is formed between the alarm triggering structure 412 and the triggering structure 411, the alarm triggering structure 412 and the triggering structure 411 are not communicated, that is, the alarm triggering structure 412 and the triggering structure 411 need to be communicated through a metal sheet conductive head 520 to be electrically communicated.
Fig. 8 is a schematic diagram of another display device according to an embodiment of the present application, and referring to fig. 8, it can be seen from fig. 1 to 7 that, in addition to the effect of preventing the display device 100 from being disassembled, alarming when the display device 100 is disassembled, and powering off after the disassembly, if the disassembly condition can be recorded, the subsequent maintenance and other work will be greatly facilitated, and therefore, the present application can also record the disassembly of the display device 100, that is, the display device 100 further includes a recording component 700, the recording component 700 is electrically connected to the printed circuit board 200, and the recording component 700 is used for recording the electrical conduction information on the printed circuit board 200. In the maintenance process of the display device 100, the user may disassemble and maintain the display device without permission, which may cause damage to the electrical components inside the display device 100, and when the display device is sent to a professional maintenance place, the user may not determine whether the display device is damaged due to the user disassembling without permission, which may cause a maintenance dispute; further, the specific disassembly date and disassembly state can be determined by recording the disassembly time and the disassembly condition, and whether the display device 100 is disassembled privately before being sent to maintenance or not is judged.
Therefore, in order to record the disassembly time and the disassembly condition of the display device 100, the display device 100 further comprises a recording component 700, the recording component 700 is installed in the display device 100 and electrically connected with the printed circuit board 200 for recording the electrical conduction condition on the printed circuit board 200, and since the conduction state of the main circuit of the printed circuit board 200 is variable, if the recording component 700 is directly powered by the mains power of the printed circuit board 200, a large amount of missing of the disassembly record will be caused; therefore, the display device 100 of the present application may be provided with a BIOS battery or a separate battery dedicated to the recording unit 700, and when the battery is powered, the display device 100 may record the detachment status even though the display device 100 is not operating, and record the detachment status (including the detachment time and the display device 100 status) in the situation history register. Maintenance personnel can judge the specific disassembly condition of the display device 100 by checking the disassembly information recorded by the recording component 700, and maintenance disputes caused by incapability of judging disassembly time are effectively avoided. The logging component 700 can also be any type of device that can implement logging, such as a log table, a counter, and the like.
In addition, in practical application, when the cover plate 500 is disposed on the detachable component 410 of the display device 100, the anti-detachment label is attached to the top of the fixing member 414, when the display device 100 is detached, the cover plate 500 is detached from the rear case 420 first, and at this time, the display device 100 is lightened or generates a sound to warn a detacher to perform the first anti-detachment warning. After the dismantler dismantles apron 500, mounting 414 can expose, and at this moment, the anti-disassembly label of applying on mounting 414 can carry out anti-disassembly warning once more to the dismantler, like this, through carrying out the multiple warning of preventing tearing open, plays further warning effect to the dismantler, avoids the user to dismantle privately, improves display device 100's the effect of preventing tearing open.
In addition, more than one detachable assembly 410 can be provided, and each fixing member 414 can be provided with the cover plate 500, so that the disassembly prevention, the disassembly reminding and the disassembly condition recording of a plurality of different detachable assemblies 410 of the display device 100 can be realized.
Specifically, the detachable component 410 may be at least one of a rear case 420, a front frame (not shown), a back plate 430 and a supporting structure (not shown), a cover plate 500 may be disposed in the display device 100 corresponding to the rear case 420 to cover the fixing member 414 of the rear case 420, and a position of the front frame may be provided with an adaptive cover plate 500 or other components to achieve corresponding effects; while the state change of each detachable component 410 needs to be associated with the electrical conduction condition of the printed circuit board 200 to detect the detachment condition, the specific embodiment may refer to the embodiment disclosed in the present application, which is exemplified by the rear case 420, and other designs may be made as long as the design conforms to the technical idea of the present application, so as to solve the technical problem of the present application, and achieve the technical effect of the present application. By the design, records of different components, different disassembling point positions and disassembling processes in the display device 100 can be realized, accurate judgment of maintenance personnel on the fault condition of the display device 100 in the maintenance process is ensured, maintenance disputes are avoided, and maintenance time is shortened as much as possible.
For example, the detachable component 410 of the present application may also be a front frame, and the front frame is detachably connected to the supporting structure, and the specific implementation manner is similar to the embodiment of the rear case 420 and the back plate 430, which is not described in detail herein.
Even more, the detachable component 410 of the present application may be a screw electrically connected to a contact of the printed circuit board 200, when the screw is normally mounted on the housing 400, the main circuit on the printed circuit board 200 is electrically conducted, and when the screw is detached, the main circuit on the printed circuit board 200 is electrically disconnected; in this case, the screw may be made of a non-conductive material as a whole, and only the contact surface of the screw and the printed circuit board 200 is provided with a conductor or coated with a conductive coating.
It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A display device, comprising:
a housing;
a display panel disposed within the housing;
the printed circuit board is arranged in the shell, is electrically connected with the display panel and supplies power to the display panel;
the shell comprises a detachable component which is detachably connected with the shell;
the printed circuit board disconnects the power to the display panel when the detachable assembly is detached from the housing.
2. The display device according to claim 1, wherein the housing comprises a back plate and a rear shell, the detachable component is the rear shell, and the rear shell is detachably connected with the back plate; the printed circuit board is provided with a first contact and a second contact, and the rear shell is provided with a trigger structure;
when the rear shell and the back plate are fixed together, the first contact and the second contact are electrically connected through the trigger structure, and the main circuit of the printed circuit board is conducted; when the rear shell and the back plate are detached and separated, the first contact and the second contact are disconnected, and the main circuit of the printed circuit board is not conducted so as to disconnect the power supply of the display panel.
3. The display device according to claim 2, wherein the rear housing is provided with a fixing member for detachably connecting the rear housing and the back plate; the display device further comprises a cover plate, and the cover plate is connected with the rear shell and used for covering the fixing piece.
4. The display device according to claim 3, wherein the printed circuit board further comprises a third contact, the rear case is further provided with an alarm triggering structure, the display device detects the conduction condition of the first contact, the second contact, the third contact, the triggering structure and the alarm triggering structure, and when the conduction condition meets a preset requirement, the display device sends out alarm information.
5. A display device according to claim 4, wherein the cover plate is provided with a protrusion for abutting against the triggering mechanism or the alarm triggering mechanism;
when the cover plate covers and shields the fixing piece, the protrusion is abutted against the trigger structure or the alarm trigger structure, and the trigger structure is disconnected with the alarm trigger structure; when the cover plate is separated from the fixing piece, the protrusion is separated from the trigger structure or the alarm trigger structure, the trigger structure is electrically connected with the alarm trigger structure, and then the preset requirement is judged to be met and the display device gives an alarm.
6. The display device according to claim 4, wherein the cover plate is provided with a metal sheet conductive head for abutting against the triggering structure or the alarm triggering structure;
when the cover plate covers the fixing piece, the metal sheet conductive head is abutted to the triggering structure and the alarm triggering structure at the same time, and the triggering structure and the alarm triggering structure are electrically connected through the metal sheet conductive head; when the cover plate is separated from the fixing piece, the metal sheet conductive head is separated from the trigger structure and the alarm trigger structure, the trigger structure and the alarm trigger structure are disconnected, the preset requirements are met, and the display device sends out alarm information.
7. A display device according to claim 3, wherein the rear housing is provided with a recess, the recess having a shape matching the shape of the cover plate; the fixing piece is arranged at the bottom of the groove, and the cover plate is embedded into the groove to shield the fixing piece.
8. The display device according to claim 3, further comprising an elastic member, wherein the rear housing is elastically connected to the cover plate via the elastic member for restoring the cover plate.
9. The display device according to claim 1, wherein the housing further comprises a front frame, the detachable component is a support structure, and the support structure is detachably connected with the front frame; the printed circuit board is provided with a first contact and a second contact, and the supporting structure is provided with a triggering structure;
when the front frame and the supporting structure are fixed together, the first contact and the second contact are electrically connected through the trigger structure, and the main circuit of the printed circuit board is conducted; when the supporting structure is detached from the front frame, the first contact and the second contact are disconnected, and the main circuit of the printed circuit board is not conducted to disconnect the power supply of the display panel.
10. The display device of claim 1, further comprising a recording component, wherein the recording component is electrically connected to the printed circuit board, and wherein the recording component is configured to record electrical connectivity information on the printed circuit board.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311953.XA CN113178130A (en) | 2021-03-24 | 2021-03-24 | Display device |
| PCT/CN2021/142896 WO2022199188A1 (en) | 2021-03-24 | 2021-12-30 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311953.XA CN113178130A (en) | 2021-03-24 | 2021-03-24 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113178130A true CN113178130A (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110311953.XA Pending CN113178130A (en) | 2021-03-24 | 2021-03-24 | Display device |
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| Country | Link |
|---|---|
| CN (1) | CN113178130A (en) |
| WO (1) | WO2022199188A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199188A1 (en) * | 2021-03-24 | 2022-09-29 | 重庆惠科金渝光电科技有限公司 | Display device |
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| WO2022199188A1 (en) | 2022-09-29 |
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Application publication date: 20210727 |