Display unit and display device

Abstract

This invention provides a display unit and a display device. The display unit includes a display lamp panel, a lamp panel base shell, and a metal plate. The display lamp panel and the lamp panel base shell are disposed opposite to each other and connected to each other. The lamp panel base shell has a control cavity on the side facing away from the display lamp panel. The metal plate is structurally adapted to the control cavity, is located within the control cavity, and is in contact with and conductively connected to the display lamp panel. The display unit provided by this invention improves the electromagnetic compatibility of the display unit while contributing to the thinning and lightening of the display unit and display device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display screens, and in particular to a display unit and a display device. BACKGROUND

[0002] With the large-scale use of display screens in daily life, electromagnetic radiation generated by display screens such as light-emitting diode (LED) display screens when in use has become the focus of attention of people.

[0003] Electromagnetic compatibility (EMC) is an important parameter for measuring the radiation degree of a display screen. In the production process of an LED display screen, the electromagnetic compatibility of the display screen needs to be continuously improved, and the safety performance of the LED display screen needs to be improved. In order to improve the electromagnetic compatibility of the LED display screen, the display lamp panel of the LED display screen in the related art is first fixed on a metal bottom shell, and then the metal bottom shell is fixed on a metal box body of the LED display screen together, and the LED display screen is electromagnetically wrapped and shielded by the metal box body, wherein the metal bottom shell can serve as a lamp panel bottom shell of the display lamp panel.

[0004] However, the electromagnetic compatibility of the LED display screen is improved by the metal box body in the related art, which is not conducive to the thinning of the LED display screen. SUMMARY

[0005] The present application provides a display unit and a display device, which can improve the electromagnetic compatibility of the display unit and facilitate the thinning of the display unit and the display device.

[0006] The first aspect of the present application provides a display unit, which comprises a display lamp panel, a lamp panel bottom shell and a metal plate, the display lamp panel and the lamp panel bottom shell are oppositely arranged and connected to each other, the lamp panel bottom shell has a control cavity on the side away from the display lamp panel, the metal plate is adapted to the structure of the control cavity, the metal plate is located in the control cavity and is in contact with and conducts the display lamp panel.

[0007] In some optional embodiments, the display unit further comprises a control circuit board, the control cavity is adapted to the structure of the control circuit board, the control circuit board is arranged in the control cavity and connected to the display lamp panel, the control circuit board is pressed on the side of the metal plate away from the display lamp panel and is in contact with and conducts the metal plate.

[0008] In some optional embodiments, the display unit further includes a first conductive component and a second conductive component. The bottom wall of the control cavity has a through hole through which the first conductive component passes. The first conductive component passes through the through hole and is disposed between the metal plate and the display lamp plate. The metal plate and the display lamp plate are in contact and connected through the first conductive component.

[0009] The second conductive component is disposed between the metal plate and the control circuit board, and the metal plate and the display light board are in contact and connected through the second conductive component.

[0010] In some alternative embodiments, the first conductive component includes a first contact portion and a second contact portion. The first contact portion is disposed on the side of the metal plate facing the display lamp panel, and the second contact portion is disposed on the side of the display lamp panel facing the metal plate. One of the first contact portion and the second contact portion passes through the through hole and contacts and conducts electricity with the other of the first contact portion and the second contact portion.

[0011] In some alternative embodiments, the first contact portion is a metal contact post, and the second contact portion is a conductive elastic element, wherein the metal contact post passes through the through hole and contacts and conducts electricity with the second contact portion.

[0012] In some alternative embodiments, the second conductive component includes at least one third contact portion connected between the metal plate and the control circuit board.

[0013] In some alternative embodiments, the third contact portion is disposed on the side of the control circuit board facing the metal plate, and contacts and conducts electricity with the metal plate;

[0014] And / or, the third contact portion is a conductive contact.

[0015] In some alternative embodiments, the control circuit board has a first connector on the side where the third contact portion is located, and the display board has a second connector, wherein the first connector and the second connector are arranged opposite to each other and are plugged into each other;

[0016] The second contact portion is located on the peripheral edge of the second connector and is disposed opposite to the first contact portion.

[0017] In some alternative embodiments, the base of the lamp panel is a plastic housing.

[0018] In some alternative embodiments, the display unit further includes a cover plate that covers the bottom shell of the lamp panel and together with the bottom shell of the lamp panel to form the control cavity, which is a closed cavity.

[0019] In some alternative embodiments, the side of the lamp panel base housing facing away from the display lamp panel has a barrier, the barrier surrounds the middle of the lamp panel base housing, and the cover plate covers the barrier and together with the lamp panel base housing forms the control cavity.

[0020] In some alternative embodiments, a test module is integrated on the side of the control circuit board of the display unit facing the cover plate. The cover plate has a cantilever member that is elastically connected to the cover plate and is disposed opposite to the test module. The cantilever member is configured to abut against the test module when it elastically deforms toward the control cavity to trigger the test module.

[0021] In some alternative embodiments, the cantilever has a trigger portion, and the test module has a test switch on the side facing the cover plate. The trigger portion is located on the side of the cantilever facing the display light panel and is disposed opposite to the test switch. The trigger portion is configured to abut against the test switch when the cantilever elastically deforms toward the control cavity to trigger the test module.

[0022] In some alternative embodiments, the trigger portion is located at the end of the cantilever member;

[0023] And / or, the side of the cantilever component facing away from the display panel has a test button, and the test button is disposed opposite to the trigger part.

[0024] A second aspect of the present invention provides a display device comprising a plurality of display units as described in any of the preceding claims, wherein the plurality of display units are spliced ​​together.

[0025] This invention provides a display unit and display device. By incorporating a metal plate within the display unit and a control cavity on the lamp panel base shell, the metal plate can be fixed to the lamp panel base shell. Through contact and conduction between the metal plate and the display lamp panel, the electromagnetic radiation generated by the display lamp panel is absorbed and confined within the control cavity. The lamp panel base shell shields the electromagnetic radiation of the display lamp panel within the control cavity, thereby improving the electromagnetic radiation of the display unit, enhancing its electromagnetic compatibility and safety performance. Furthermore, the lamp panel base shell replaces the traditional lamp panel base shell and housing structure in the display unit, facilitating the thinning and lightening of the display unit. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded view of a display unit provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the display unit provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the lamp panel bottom shell provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the metal plate provided in an embodiment of the present invention from a first-view perspective;

[0031] Figure 5 This is a schematic diagram of the metal plate provided in an embodiment of the present invention from a second perspective.

[0032] Figure 6 This is a schematic diagram of the structure of the display light panel provided in an embodiment of the present invention;

[0033] Figure 7 yes Figure 2 Enlarged view of point A in the middle;

[0034] Figure 8 This is a schematic diagram of the control circuit board provided in an embodiment of the present invention from a first-view perspective;

[0035] Figure 9 This is a schematic diagram of the control circuit board provided in an embodiment of the present invention from a second perspective.

[0036] Figure 10 This is a schematic diagram of the cover plate provided in an embodiment of the present invention from a first-view perspective;

[0037] Figure 11 This is a schematic diagram of the cover plate provided in an embodiment of the present invention from a second perspective;

[0038] Figure 12 yes Figure 11 Enlarged view of point B in the middle;

[0039] Figure 13 yes Figure 10 Enlarged view of point C in the middle.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100 - Display unit; 10 - Display light panel; 11 - Display surface; 12 - Driving surface; 121 - Second contact part; 122 - Second connector;

[0042] 20-Light panel bottom shell; 21-First mounting surface; 22-Second mounting surface; 221-Control cavity; 222-Enclosure; 23-First insertion slot; 24-Through hole;

[0043] 30 - Metal plate; 31 - First contact part; 32 - Second insertion slot;

[0044] 40 - Control circuit board; 41 - Power supply module; 42 - Control module; 43 - Test module; 431 - Test switch; 44 - Third contact; 45 - First connector;

[0045] 50-Cover plate; 51-Cantilever component; 511-Trigger part; 512-Test button; 52-Cover plate body; 53-Slot; 54-Heat dissipation hole. Detailed Implementation

[0046] Electromagnetic compatibility (EMC) is an important parameter for measuring the radiation levels of display devices such as screens. With the widespread use of screens in daily life, EMC has become a major concern.

[0047] Electromagnetic compatibility (EMC) generally refers to the ability of a device or system to operate as required in its electromagnetic environment without causing unacceptable electromagnetic interference to any other device in that environment. In other words, EMC refers to the ability of a device or system to operate as required in its electromagnetic environment without causing unacceptable electromagnetic interference to any other device in that environment.

[0048] In the production process of displays such as light-emitting diode (LED) displays, it is necessary to continuously improve the electromagnetic compatibility (EMC) of the displays to meet the EMC requirements and enhance their safety performance. LED displays typically include a display panel on which images are displayed.

[0049] To improve the electromagnetic compatibility of LED displays, the following two solutions are commonly used in related technologies:

[0050] 1. After fixing the LED display panel to the metal base, it is then fixed together with the metal base to the mounting surface of the metal cabinet. The metal cabinet encloses and shields the electromagnetic radiation of the LED display panel. The metal base can serve as the base of the LED display panel and together with the LED display panel and the metal cabinet, it constitutes the display unit of the LED display. The thickness of each display unit includes at least the LED display panel, the metal base, and the metal cabinet. This not only makes the display unit and the LED display thicker and heavier, but also significantly increases the manufacturing cost of the LED display due to the metal base and the metal cabinet.

[0051] 2. Using a plastic casing instead of the aforementioned metal casing, a conductive paint layer is applied to the surface of the plastic casing through spraying or other methods, and the display panel is directly connected to the conductive paint layer. This improves the electromagnetic compatibility of the LED display screen and reduces its thickness by eliminating the need for a metal base. However, this solution makes it difficult to control the thickness of the conductive paint layer, which can cause uneven flatness of the entire display surface, affecting the viewing experience. In addition, the method of spraying conductive paint is less environmentally friendly, and the conductive paint layer will deteriorate over time, causing electromagnetic radiation hazards and resulting in poor electromagnetic compatibility stability of the LED display screen.

[0052] Therefore, the related technologies that use metal enclosures to shield LED displays from electromagnetic interference to improve their electromagnetic compatibility are not conducive to making LED displays thinner and lighter. The method of improving the electromagnetic compatibility of LED displays by applying conductive paint to plastic enclosures not only results in poor flatness of the LED displays, but also has the characteristics of poor environmental protection and poor electromagnetic compatibility stability.

[0053] In view of this, embodiments of the present invention provide a display unit and a display device. By setting a metal plate inside the display unit and a control cavity on the lamp plate bottom shell, not only can the electromagnetic radiation generated by the display lamp plate be absorbed by the metal plate, but the electromagnetic radiation of the display lamp plate can also be shielded by the lamp plate bottom shell within the control cavity, thereby improving the electromagnetic radiation of the display unit, enhancing the electromagnetic compatibility and safety performance of the display unit, and helping to enhance the environmental friendliness and electromagnetic compatibility stability of the display unit and display device, but also the lamp plate bottom shell can replace the traditional lamp plate bottom shell structure in the display unit, such as the aforementioned metal bottom shell and metal housing structure, which is beneficial to the thinning of the display unit.

[0054] The structure of the display unit and display device of this embodiment will be further described below with reference to the accompanying drawings.

[0055] Example

[0056] Figure 1 This diagram illustrates the exploded view of the display unit. Figure 2This is a schematic diagram of the display unit.

[0057] refer to Figure 1 and Figure 2 As shown, the display unit 100 includes a display light panel 10, a light panel base shell 20, and a metal plate 30. The display light panel 10 and the light panel base shell 20 are disposed opposite to each other and connected to each other to fix the display light panel 10 on the light panel base shell 20. For example, the display light panel 10 may be, but is not limited to, an LED display light panel 10. The display light panel 10, such as an LED display light panel 10, includes a display surface 11 and a driving surface 12. The display surface 11 is provided with a plurality of LED beads, and the driving surface 12 may also be referred to as the non-display surface 11. The driving surface 12 of the display light panel 10 is connected to the light panel base shell 20.

[0058] The base shell 20 of the lamp panel has a control cavity 221 on the side opposite to the display lamp panel 10. The metal plate 30 is adapted to the structure of the control cavity 221. The metal plate 30 is located in the control cavity 221 and is in contact with and connected to the display lamp panel 10. Since the display unit 100 generates electromagnetic radiation when it is running, the embodiment of the present invention, by setting a metal plate 30 inside the display unit 100 and a control cavity 221 on the lamp plate bottom shell 20, not only can the metal plate 30 be fixed on the lamp plate bottom shell 20 to achieve the installation of the metal plate 30 on the lamp plate bottom shell 20, but also, by contacting and conducting with the display lamp plate 10 through the metal plate 30, the electromagnetic radiation generated by the display lamp plate 10 can be adsorbed by the metal plate 30 through the magnetic field effect of the metal, thus confining the adsorbed electromagnetic radiation on the metal plate 30. By setting the metal plate 30 inside the control cavity 221, the electromagnetic radiation of the display lamp plate 10 can be shielded by the lamp plate bottom shell 20 to prevent the electromagnetic radiation generated by the display lamp plate 10 from spreading to the outside of the display unit 100 and generating electromagnetic radiation on the human body. This achieves the purpose of improving the electromagnetic radiation of the display unit 100, improving the electromagnetic compatibility and safety performance of the display unit 100, and ensuring that the electromagnetic compatibility and safety of the display unit 100 meet the product design requirements.

[0059] At the same time, since the structure of the metal plate 30 is compatible with that of the control cavity 221, the metal plate 30 can avoid having a significant impact on the structure of the lamp base shell 20, while also having a large coverage area for the structures inside the display unit 100, such as the display lamp plate 10, thereby helping to better improve the electromagnetic radiation of the display unit 100.

[0060] Compared to the LED displays that use metal base shells and metal enclosures as described above, this embodiment can replace the metal base shell and metal enclosure by setting up a lamp board base shell 20. While meeting the electromagnetic compatibility design requirements of the display unit 100, since the metal plate 30 can be set in the control cavity 221 of the lamp board base shell 20, this can help to make the display unit 100 thinner and lighter, giving the display unit 100 a thinner and lighter feature.

[0061] In addition, compared to the LED display screen with a plastic housing with a conductive paint layer mentioned above, this embodiment uses a metal plate 30 to contact and conduct electricity with the display lamp board 10. This not only ensures electromagnetic conduction between the metal plate 30 and the display lamp board 10, improving the electromagnetic radiation of the display unit 100, but also avoids the need for a conductive paint layer in the lamp board bottom shell 20. This enhances the environmental friendliness and electromagnetic compatibility stability of the display unit 100 in this embodiment. While ensuring that the display unit 100 in this embodiment has good electromagnetic compatibility stability, it also makes the display unit 100 in this embodiment more environmentally friendly.

[0062] In some embodiments, the base shell 20 of the lamp panel can be a plastic shell, so as to take advantage of the fact that plastic is lighter and thinner than metal, while ensuring that the display unit 100 has good electromagnetic compatibility, the weight and manufacturing cost of the display unit 100 can be greatly reduced, making the display unit 100 lighter and thinner.

[0063] At the same time, since the metal plate 30 is located in the control cavity 221 of the lamp base shell 20, the electromagnetic radiation generated by the display unit 100 during operation can be concentrated on the metal plate 30 in the control cavity 221 and shielded, which helps to confine and control the electromagnetic radiation generated by the display unit 100 within a small range to prevent it from spreading.

[0064] It should be noted that in some embodiments, the base shell 20 of the lamp board can also be made of metal. Compared with the LED display screen with metal base shell and metal cabinet mentioned above, this not only improves the electromagnetic compatibility and safety performance of the display unit 100, but also reduces the thickness of the display unit 100 due to the setting of the control cavity 221 on the base shell 20 of the lamp board, so that the display unit 100 can be developed in the direction of being thinner and lighter.

[0065] The structure of the display unit 100 in this embodiment will be further described below, taking the example that the base shell 20 of the lamp board can be a plastic shell.

[0066] The metal plate 30 can be a plate-like structure made of, but not limited to, aluminum, iron, copper, stainless steel, or other metals. Given the lightweight and rust-resistant properties of aluminum plates, which require no surface treatment, aluminum plates are used for the metal plate 30 in this embodiment. This further reduces the weight of the display unit 100 and simplifies the processing of the metal plate 30 when it contacts and conducts with structures such as the display lamp panel 10, thereby simplifying the manufacturing process of the display unit 100.

[0067] In order to achieve control of the display panel 10, refer to Figure 1 and Figure 2 As shown, the display unit 100 also includes a control circuit board 40, and the control cavity 221 is structurally compatible with the control circuit board 40. The control circuit board 40 is disposed within the control cavity 221 and is interconnected with the display lamp panel 10, so that the control circuit board 40 can supply power and control the display lamp panel 10, thereby realizing the display function of the display lamp panel 10 and the display unit 100. The lamp panel bottom shell 20 has a first mounting surface 21 and a second mounting surface 22, which are arranged opposite to each other. The first mounting surface 21 is opposite to the display surface 11 of the display lamp panel 10. The display lamp panel 10 is disposed on the first mounting surface 21, and the control cavity 221 is located on the second mounting surface 22. The control circuit board 40 and the metal plate 30 are disposed on the second mounting surface 22.

[0068] The control circuit board 40 is pressed onto the side of the metal plate 30 facing away from the display lamp panel 10, and is in contact with and conductive with the metal plate 30. This not only ensures a stable and reliable connection between the metal plate 30 and the display lamp panel 10 by applying pressure to the metal plate 30, guaranteeing effective contact and conductivity, but also utilizes the magnetic field effect of the metal to absorb the electromagnetic radiation generated by the control circuit board 40 during operation. This absorbed electromagnetic radiation is confined to the metal plate 30, and the electromagnetic radiation on the metal plate 30 is shielded by the lamp panel bottom shell 20 within the control cavity 221. This prevents the electromagnetic radiation generated by the control circuit board 40 from diffusing to the outside of the display unit 100 and causing electromagnetic radiation to the human body, thereby improving the electromagnetic radiation of the display unit 100, enhancing its electromagnetic compatibility and safety performance, and ensuring that the electromagnetic compatibility and safety of the display unit 100 meet the product design requirements.

[0069] At the same time, since the structure of the control cavity 221 is adapted to the control circuit board 40, the metal plate 30 has a large coverage area over the control circuit board 40 and the display lamp board 10, which is beneficial to improving the electromagnetic radiation of the display unit 100.

[0070] It should be noted that, due to the presence of the metal plate 30, the display light board 10 and the control circuit board 40 can also be shielded and isolated to prevent the electromagnetic radiation generated by the display light board 10 from interfering with the control circuit board 40, or to prevent the electromagnetic radiation generated by the control circuit board 40 from interfering with the display light board 10.

[0071] Figure 3 This is a schematic diagram of the structure of the lamp panel bottom shell provided in an embodiment of the present invention.

[0072] To achieve contact and electrical communication between the metal plate 30 and the display lamp plate 10 and the control circuit board 40, the display unit 100 further includes a first conductive component and a second conductive component. The bottom wall of the control cavity 221 has a through hole 24 for the first conductive component to pass through (e.g., Figure 3 As shown in the diagram, this arrangement helps to ensure that the metal plate 30 and the control circuit board 40 are fixed within the control cavity 221, while also facilitating contact between the metal plate 30 and the display light panel 10 and the control circuit board 40.

[0073] The first conductive component is disposed within the through hole 24 and between the metal plate 30 and the display lamp panel 10, allowing the metal plate 30 and the display lamp panel 10 to contact and conduct electricity through the first conductive component. The second conductive component is disposed between the metal plate 30 and the control circuit board 40, allowing the metal plate 30 and the display lamp panel 10 to contact and conduct electricity through the second conductive component. After the control circuit board 40 and the display lamp panel 10 are interconnected, under the pressure of the control circuit board 40, the metal plate 30 can contact and conduct electricity with the display lamp panel 10 and the control circuit board 40 respectively through the first and second conductive components. This allows the electromagnetic radiation generated by the display lamp panel 10 to be transmitted to the metal plate 30 through the first conductive component and absorbed by the metal plate 30, and the electromagnetic radiation generated by the control circuit board 40 to be transmitted to the metal plate 30 through the second conductive component and absorbed by the metal plate 30, thus confining it to the metal plate 30. This prevents the electromagnetic radiation generated by the control circuit board 40 and the display lamp panel 10 from diffusing to the outside of the display unit 100, thereby improving the electromagnetic compatibility and safety performance of the display unit 100.

[0074] The structure of the first and second conducting components will be further described below with reference to the accompanying drawings.

[0075] Figure 4 The diagram illustrates the structure of the metal plate from a first-person perspective. Figure 5 The diagram illustrates the structure of the metal plate from a second-view perspective. Figure 6 The diagram illustrates the structure of the display panel. Figure 7 It indicated Figure 2 A magnified view of point A in the middle. Figure 4 and Figure 5 The diagram shows the structural views of two opposite sides of a metal plate.

[0076] refer to Figure 4 to Figure 7 As shown, the first conductive component includes a first contact portion 31 and a second contact portion 121. The first contact portion 31 is disposed on the side of the metal plate 30 facing the display lamp panel 10, and the second contact portion 121 is disposed on the side of the display lamp panel 10 facing the metal plate 30, that is, the second contact portion 121 is disposed on the driving surface 12 of the display lamp panel 10. One of the first contact portion 31 and the second contact portion 121 passes through the through hole 24 and contacts and conducts electricity with the other of the first contact portion 31 and the second contact portion 121. In other words, the first contact portion 31 can... Figure 7 The second contact portion 121 can be made contact and connected through the through hole 24, or the second contact portion 121 can be made contact and connected through the through hole 24 to the first contact portion 31. In this way, while realizing the contact and connection between the display lamp panel 10 and the metal plate 30, the structure of the metal plate 30 and the display lamp panel 10 can be made more diverse.

[0077] like Figure 4 and Figure 7 As shown, the first contact portion 31 may include, but is not limited to, a metal contact post, and the second contact portion 121 may include, but is not limited to, a conductive elastic element. The metal contact post passes through the through hole 24 and contacts and conducts with the second contact portion 121. In this way, while achieving contact and conduction between the display lamp panel 10 and the metal plate 30, the height between the metal contact post and the elastic element can be adjusted according to the distance between the metal plate 30 and the display lamp panel 10. This ensures that after the control circuit board 40 is connected to the display lamp panel 10, under the pressure of the control circuit board 40, the metal contact post can abut against the elastic element, so that the elastic element is compressed and elastically deformed towards the side of the display lamp panel 10 under the action of the metal contact post, thereby making the metal contact post and the elastic element in close contact. The metal plate 30 can then contact and conduct with the display lamp panel 10 through the first conductive component.

[0078] For example, the elastic element may include, but is not limited to, conductive foam or metal spring. In this embodiment, a patchable (i.e., mountable) conductive foam or metal spring is used so that the elastic element can be directly mounted on the metal plate 30 or the display light plate 10. While achieving elastic fixation, this greatly simplifies the number of parts required for the installation of the elastic element, resulting in a display unit 100 with fewer parts and quick and simple assembly.

[0079] refer to Figure 4As shown, the first contact portion 31 can be disposed on the side of the metal plate 30 facing the display light panel 10, and the second contact portion 121 can be disposed on the driving surface 12 of the display light panel 10. This not only ensures that the metal plate 30 contacts and conducts through the display light panel 10 via the first conductive component, but also makes the driving surface 12 of the display light panel 10 relatively flat, avoiding bumps to the display light panel 10 during transportation, thus enhancing the convenience of transporting the display light panel 10.

[0080] It should be noted that, in this embodiment, the structure of the elastic element is not further limited. To facilitate elastic deformation of the elastic element towards the side of the display panel 10, in this embodiment, as... Figure 7 As shown, the elastic element can be a metal sheet with elastic protrusions. The end of the first contact portion 31, such as the metal contact post, can abut against the elastic protrusion to increase the deformation space of the elastic protrusion. This allows the elastic protrusion to be compressed under the action of the metal contact post and undergo elastic deformation toward one side of the display lamp panel 10, ensuring a tight connection between the metal plate 30 and the display lamp panel 10. This helps to enhance the stability of the electromagnetic compatibility of the display unit 100.

[0081] In some embodiments, the display panel 30 is further provided with limiting portions on both sides of the elastic member so as to limit the elastic member by the two limiting portions, so as to prevent the elastic member from being excessively deformed to one side under the abutment of the metal contact post.

[0082] Figure 8 The diagram illustrates the structure of the control circuit board from a first-person perspective.

[0083] refer to Figure 7 and Figure 8 As shown, the second conductive component includes at least one third contact portion 44, which connects the metal plate 30 and the control circuit board 40. In this embodiment, the second conductive component includes one third contact portion 44, which can be disposed on the metal plate 30 or the control circuit board 40. This ensures that the metal plate 30 and the control circuit board 40 are in contact and conductive, while simplifying the structure of the second conductive component and the display unit 100. Alternatively, in some embodiments, the second conductive component includes two mutually abutting third contact portions 44, which can be disposed on the metal plate 30 or the control circuit board 40 respectively. This allows for greater diversity in the structure of the display unit 100 while achieving contact between the metal plate 30 and the control circuit board 40 through the third contact portions 44.

[0084] The structure of the display unit 100 in this embodiment will be further described below, taking the second conductive component including a third contact portion 44 as an example.

[0085] from Figure 8 It can be seen that the third contact part 44 can be disposed on the side of the control circuit board 40 facing the metal plate 30, and contact and conduct with the metal plate 30, so that when the control circuit board 40 is connected to the display light board 10, it can contact and conduct with the metal plate 30 through the third contact part 44.

[0086] The third contact portion 44 can be a conductive contact. For example, the contact can be, but is not limited to, conductive foam or a metal spring that can undergo elastic deformation. Thus, when the control circuit board 40 is connected to the display light panel 10 and installed within the control cavity 221, the control circuit board 40 will contact the metal plate 30 through the contact, compressing the contact and achieving tight contact and electrical conduction between the control circuit board 40 and the metal plate 30.

[0087] Alternatively, in some embodiments, the second conductive component may adopt the same structure as the first conductive component. In this embodiment, the structure of the second conductive component and the first conductive component is not further limited, as long as the metal plate 30 can make contact and conduction with the control circuit board 40 and the display lamp board 10.

[0088] To achieve the connection between the control circuit board 40 and the display light board 10, refer to... Figure 6 as well as Figure 8 As shown, the control circuit board 40 has a first connector 45 on the side with the third contact portion 44, and the indicator light panel 10 has a second connector 122. The first connector 45 and the second connector 122 are arranged opposite to each other and are plugged into each other (e.g., Figure 2 (As shown in the diagram). The second contact portion 121 can be located on the peripheral edge of the second connector 122 and is disposed opposite to the first contact portion 31. When the control circuit board 40 is assembled in the control cavity 221, it can be connected to the second connector 122 of the display lamp board 10 through the first connector 45, thereby realizing the connection between the control circuit board 40 and the display lamp board 10. While the control circuit board 40 supplies power and controls the display lamp board 10, the connection between the control circuit board 40 and the display lamp board 10 can be simplified.

[0089] Meanwhile, since the second contact portion 121 can be located at the peripheral edge of the second connector 122, it can better avoid the second connector 122, so as to ensure the connection between the control circuit board 40 and the display light board 10.

[0090] To facilitate the connection between the control circuit board 40 and the display light board 10, such as Figure 3 and Figure 4As shown, a first insertion slot 23 is provided on the bottom wall of the control cavity 221, and a second insertion slot 32 is provided on the metal plate 30. The second insertion slot 32 is arranged opposite to the first insertion slot 23 so that at least one of the first insertion member 45 or the second insertion member 122 can pass through the first insertion slot 23 and the second insertion slot 32 to realize the insertion of the control circuit board 40 and the display light board 10.

[0091] Figure 9 The diagram shows the structure of the control circuit board from a second-view perspective.

[0092] refer to Figure 9 As shown, the control circuit board 40 has multiple functional modules on the side facing away from the display lamp board 10. These multiple functional modules may include, but are not limited to, a power module 41 and a control module 42. Both the power module 41 and the control module 42 are electrically connected to the first connector 45 so that the control circuit board 40 can power and control the display lamp board 10.

[0093] In order to test the functions of the display unit 100, such as the display function, a test module 43 is also integrated on the side of the control circuit board 40 of the display unit 100 facing the cover plate 50. The test module 43 is electrically connected to the control module 42 so that when the test module 43 is triggered, the function test of the display unit 100 can be realized.

[0094] Figure 10 and Figure 11 The diagram illustrates the structure of the cover plate from different perspectives.

[0095] refer to Figure 10 and Figure 11 As shown, the display unit 100 also includes a cover plate 50, which covers the lamp panel bottom shell 20 and together with the lamp panel bottom shell 20 forms a closed control cavity 221 (e.g., Figure 2 As shown in the diagram, the control cavity 221 is a closed cavity to isolate and shield the electromagnetic radiation generated by the display panel 10 and the control circuit board 40 within the closed control cavity 221, so as to avoid the electromagnetic radiation in the control cavity 221 from spreading to the outside of the display unit 100 as much as possible, thereby improving the electromagnetic radiation of the display unit 100 and enhancing the electromagnetic compatibility and safety performance of the display unit 100.

[0096] The base shell 20 of the lamp panel has a baffle 222 on the side facing away from the display lamp panel 10. The baffle 222 surrounds the middle of the base shell 20, and the cover plate 50 covers the baffle 222, forming a control cavity 221 together with the base shell 20. The baffle 222 surrounds the middle of the second mounting surface 22 of the base shell 20, and together with the middle of the second mounting surface 22, forms the outwardly protruding control cavity 221. This allows the metal plate 30 and the control circuit board 40 to be mounted on the base shell 20, so that the control circuit board 40 can contact and conduct with the display lamp panel 10 and the metal plate 30, avoiding the exposure of the control circuit board 40, while not affecting the thickness of the base shell 20 outside the control cavity 221 (i.e., the periphery of the control cavity 221), which helps to make the display unit 100 and the display device thinner and lighter.

[0097] The enclosure 222 can be detachably connected to the control circuit board 40 by means of snap-fit ​​or other means, so as to facilitate the disassembly, assembly and maintenance of the control circuit board 40.

[0098] Figure 12 It indicates Figure 11 Enlarged view at point B in the middle. Figure 13 It indicates Figure 10 Enlarged view of point C in the middle.

[0099] refer to Figure 12 and Figure 13 As shown, the cover plate 50 has a cantilever member 51, which is elastically connected to the cover plate 50 and is positioned opposite to the test module 43. The cantilever member 51 is configured to abut against the test module 43 when it elastically deforms toward the control cavity 221, thereby triggering the test module 43. This allows the user to perform functional tests on the display unit 100 by triggering the cantilever member 51 without disassembling the cover plate 50, making the testing of the display unit 100 more convenient and faster.

[0100] For details, please refer to Figure 12 As shown, the cantilever 51 has a trigger part 511, and the test module 43 has a test switch 431 on the side facing the cover plate 50. The trigger part 511 is located on the side of the cantilever 51 facing the display light panel 10 and is disposed opposite to the test switch 431. The trigger part 511 is configured to abut against the test switch 431 when the cantilever 51 elastically deforms towards the control cavity 221, thereby triggering the test module 43. In this way, when the user needs to perform functional testing on the display unit 100, he can press the cantilever 51 to make the cantilever 51 elastically deform towards the control cavity 221, and abut against the test switch 431 through the trigger part 511, thereby triggering the test module 43, so that the display unit 100 can be functionally tested through the test module 43 without removing the cover plate 50.

[0101] Among them, such as Figure 13As shown, the trigger part 511 can be located at the end of the cantilever member 51, so that the trigger part 511 can elastically deform toward the control cavity 221 and abut against the test switch 431, thereby triggering the test module 43 to perform functional testing.

[0102] It should be noted that the cover plate 50 may include a cover plate body 52 and a cantilever member 51, and a groove 53 (e.g., ...) is provided between the cantilever member 51 and the cover plate body 52. Figure 7 , Figure 12 and Figure 13 As shown in the diagram, one end of the cantilever 51 is connected to the cover plate body 52. ​​The cover plate body 52 can be understood as the structure on the cover plate 50 excluding the cantilever 51. In this way, due to the setting of the groove 53, the cantilever 51 can become a cantilever structure on the cover plate 50, thereby realizing the elastic connection between the cantilever 51 and the cover plate 50 (i.e., the cover plate body 52).

[0103] like Figure 13 As shown, the side of the cantilever 51 facing away from the display lamp panel 10 has a test button 512. The test button 512 is arranged opposite to the trigger part 511 so that when the display unit 100 needs to be functionally tested, the user can press the test button 512 to cause the trigger part 511 to elastically deform towards the side of the test module 43 under the action of the cantilever 51 and abut against the test switch 431, so as to realize the test function of the display unit 100 without removing the cover plate 50.

[0104] The control circuit board 40 generates heat during operation, which can affect the heat dissipation performance of the display unit 100. To facilitate timely heat dissipation from the control circuit board 40, the cover plate 50 can be provided with multiple heat dissipation holes 54. These heat dissipation holes 54 can be located on at least one of the cover plate body 52 and the cantilever member 51. This allows the heat from the control circuit board 40 to be dissipated through the heat dissipation holes 54, ensuring the heat dissipation performance of the display unit 100.

[0105] It should be noted that, in this embodiment, while meeting the design requirements for electromagnetic compatibility of the display unit 100, the location, shape, and number of heat dissipation holes can be adjusted to meet the heat dissipation performance of the display unit 100.

[0106] Based on the above, this embodiment of the invention also provides a display device, which may include multiple display units 100. The multiple display units 100 are spliced ​​together to form display units 100 of different sizes. This not only enables the display device to have better electromagnetic compatibility and safety, but also makes the display device thinner and lighter.

[0107] It should be noted that since the elevator system adopts all the technical solutions of the display unit 100 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the display unit 100 in the above embodiments, which will not be elaborated here.

[0108] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0109] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0110] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display unit, characterized in that, It includes a display light panel, a light panel base shell, a metal plate, a control circuit board, and a cover plate. The display light panel and the light panel base shell are arranged opposite to each other and connected to each other. The bottom shell of the lamp panel is a plastic shell. The side of the bottom shell of the lamp panel away from the display lamp panel has a baffle. The baffle surrounds the middle of the bottom shell of the lamp panel. The cover plate covers the baffle and together with the bottom shell of the lamp panel, they form a control cavity. The control cavity is a closed cavity. The metal plate is adapted to the structure of the control cavity, the metal plate is located inside the control cavity, and is in contact with and connected to the display light panel; The control cavity is adapted to the structure of the control circuit board, the control circuit board is disposed in the control cavity, and is in contact with and connected to the metal plate.

2. The display unit according to claim 1, characterized in that, The control circuit board is connected to the display light panel, and the control circuit board is pressed onto the side of the metal plate opposite to the display light panel.

3. The display unit according to claim 2, characterized in that, It also includes a first conductive component and a second conductive component. The bottom wall of the control cavity has a through hole through which the first conductive component passes. The first conductive component passes through the through hole and is disposed between the metal plate and the display lamp plate. The metal plate and the display lamp plate are in contact and connected through the first conductive component. The second conductive component is disposed between the metal plate and the control circuit board, and the metal plate and the display light board are in contact and connected through the second conductive component.

4. The display unit according to claim 3, characterized in that, The first conductive component includes a first contact portion and a second contact portion. The first contact portion is disposed on the side of the metal plate facing the display lamp panel, and the second contact portion is disposed on the side of the display lamp panel facing the metal plate. One of the first contact portion and the second contact portion passes through the through hole and contacts and conducts electricity with the other of the first contact portion and the second contact portion.

5. The display unit according to claim 4, characterized in that, The first contact portion is a metal contact post, and the second contact portion is a conductive elastic element. The metal contact post passes through the through hole and contacts and conducts electricity with the second contact portion.

6. The display unit according to claim 4, characterized in that, The second conductive component includes at least one third contact portion connected between the metal plate and the control circuit board.

7. The display unit according to claim 6, characterized in that, The control circuit board has a first connector on the side with the third contact portion, and the display board has a second connector. The first connector and the second connector are arranged opposite to each other and are plugged into each other. The second contact portion is located on the peripheral edge of the second connector and is disposed opposite to the first contact portion.

8. The display unit according to claim 1, characterized in that, The control circuit board of the display unit has a test module integrated on the side facing the cover plate. The cover plate has a cantilever member that is elastically connected to the cover plate and is disposed opposite to the test module. The cantilever member is configured to abut against the test module when it elastically deforms toward the control cavity to trigger the test module.

9. The display unit according to claim 8, characterized in that, The cantilever has a trigger part, and the test module has a test switch on the side facing the cover plate. The trigger part is located on the side of the cantilever facing the display light panel and is disposed opposite to the test switch. The trigger part is configured to abut against the test switch when the cantilever elastically deforms toward the control cavity to trigger the test module.

10. The display unit according to claim 9, characterized in that, The triggering part is located at the end of the cantilever member; And / or, the side of the cantilever component facing away from the display panel has a test button, and the test button is disposed opposite to the trigger part.

11. A display device, characterized in that, It includes a plurality of display units as described in any one of claims 1-10, wherein the plurality of display units are spliced ​​together.

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