Meter cover structure and electric energy meter

Abstract

The utility model provides a meter cover structure and an electric energy meter, and relates to the technical field of electrical instruments. The meter cover structure comprises a circuit board, a cover body and a light guide plate. The circuit board is provided with at least two light-emitting devices which are distributed at intervals. The cover body and the circuit board are arranged in a stacked mode, at least two window holes are formed in the cover body, the at least two window holes correspond to the at least two light-emitting devices in a one-to-one mode, a light shielding plate is arranged on the side, facing the circuit board, of the cover body, the light shielding plate is located between the two adjacent window holes, and the light guide plate is located between the circuit board and the cover body. The positions, opposite to the light-emitting devices, of the light guide plate are pervious to light, a mounting through hole is formed in the light guide plate, and the light shielding plate penetrates through the mounting through hole and is used for shielding light emitted by the adjacent light-emitting devices. Thus, the possibility that when one light-emitting device emits light, the light is emitted out through the window hole not corresponding to the light-emitting device, a user captures wrong light-emitting information, and then the working condition of the electric energy meter is misjudged can be reduced.

Description

Technical Field

[0001] This application relates to the field of electrical instrumentation technology, and in particular to a meter cover structure and an energy meter. Background Technology

[0002] To facilitate identification of the operating status of the electricity meter, light-emitting devices are usually installed on the meter cover to indicate different operating conditions. There are typically multiple light-emitting devices, which can illuminate individually or in combination to indicate various operating conditions of the electricity meter.

[0003] However, the arrangement of multiple light-emitting devices can cause the light emitted by different devices to interfere with each other, which can easily lead to misjudgments of the working status of the electricity meter. Utility Model Content

[0004] This application provides a cover structure and an energy meter that can reduce the influence between the light emitted by different light-emitting devices and reduce the possibility of misjudging the working status of the energy meter.

[0005] In a first aspect, this application provides a watch cover structure, including a circuit board, a cover body, and a light guide plate. The circuit board has at least two light-emitting devices spaced apart. The cover body and the circuit board are stacked together. The cover body has at least two viewing windows, each corresponding to one of the at least two light-emitting devices. A light-shielding plate is located on the side of the cover body facing the circuit board, between two adjacent viewing windows. The light guide plate is located between the circuit board and the cover body. Light is transmitted through the light guide plate at positions opposite the light-emitting devices. The light guide plate has mounting holes through which the light-shielding plate passes, and the light-shielding plate is used to block light emitted by adjacent light-emitting devices.

[0006] In this embodiment, since the light-shielding plate is located between two adjacent viewing windows, when one light-emitting device emits light, the light can directly pass through the corresponding viewing window. However, when the light is directed towards the viewing window of the other light-emitting device adjacent to that device, the light-shielding plate can block the light. This reduces the possibility that when one light-emitting device emits light, the light emitted through a different viewing window could lead to incorrect light emission information being captured by the user, potentially causing a misjudgment of the electricity meter's operating status.

[0007] Optionally, the circuit board has an indicator area, and the light-emitting device includes light-emitting diodes (LEDs), with at least two LEDs connected to the indicator area. A light guide plate has a first light guide area opposite to the indicator area. A mounting through-hole is provided in the first light guide area, and a first sealing rib is provided on the side of the first light guide area facing the cover. The first sealing rib extends along the periphery of the first light guide area and is fused to the cover.

[0008] The fusion connection between the first sealing rib and the cover in this application creates a continuous physical interface, achieving a gapless connection. Thus, the first sealing rib, the light guide plate, and the cover can enclose a protective chamber. This reduces the possibility of external impurities entering the first light guide area through the cover and affecting its light transmission performance.

[0009] Optionally, a second sealing rib is provided on the side of the light guide plate facing the cover. The second sealing rib extends along the circumferential direction of the mounting through hole and is fused to the cover. The first sealing rib, the second sealing rib, the light guide plate, and the cover together form a sealed space.

[0010] In this way, the first sealing rib, the second sealing rib, the light guide plate, and the cover can work together to form a sealed space, which provides better protection against external impurities and static electricity, reducing the possibility of impurities and static electricity entering the mounting holes and affecting the normal operation of the circuit board.

[0011] Optionally, the circuit board has an indicator area and a display area. The light-emitting devices include a display screen and light-emitting diodes (LEDs). The display screen is connected to the display area, and the LEDs are connected to the indicator area. The light-shielding plate includes a first sub-plate. In the stacking direction of the circuit board and the cover, the projection of the first sub-plate is located between the projection of the indicator area and the projection of the display area. The first sub-plate is used to block the light emitted from the display area and the light emitted from the indicator area.

[0012] With the above settings, the display screen and LEDs can work together to indicate different operating conditions of the electricity meter. Furthermore, the display screen can show images and text, providing a more intuitive view of the meter's information and allowing users to easily understand and monitor its operation.

[0013] The first daughterboard can block the light emitted from the display area and the light emitted from the indicator area, so that the light emitted from the indicator area is only the light emitted from the display screen, and the light emitted from the indicator area is only the light emitted from the light-emitting diode. This reduces the mutual interference between the light emitted from the display screen and the light emitted from the light-emitting diode, making it possible for users or external devices to have difficulty distinguishing the source of the light.

[0014] Optionally, the number of light-emitting diodes (LEDs) can be multiple, and the light-shielding plate also includes a second sub-plate, which is connected to the cover at a position opposite to the indicator area. In the stacking direction of the circuit board and the cover, the projection of the second sub-plate is located between two adjacent LEDs, and the second sub-plate is used to block the light emitted by the two adjacent LEDs.

[0015] In this way, the second sub-board can block the light emitted by two adjacent LEDs. This reduces the possibility of light crosstalk between different LEDs at the first light guide area, causing the second sub-hole, which should not emit light, to light up.

[0016] Optionally, the cover structure has intersecting first and second directions. The plane formed by the first and second directions intersects the stacking direction of the circuit board and the cover. The indicator area and the display area are distributed along the first direction. In the second direction, the size of the display area is larger than the size of the first sub-board, and the size of the first sub-board is larger than or equal to the size of the indicator area. In the first direction, the projection of the first sub-board covers the projection of the indicator area.

[0017] This reduces the size of the first sub-board, thereby lowering the material cost of the cover, and also ensures the light-blocking function of the first sub-board, reducing the impact of the light emitted by the display screen on the LEDs.

[0018] Optionally, a light guide column is provided on the side of the light guide plate opposite to the light-emitting device. The light guide column is used to conduct the light emitted by the light-emitting device to the cover so as to display it through the viewing window.

[0019] In this way, when the light-emitting device emits light, the light can first be transmitted to the light guide column, which can concentrate and homogenize the light so that the light can be clearly transmitted to the viewing window for display, improving the display effect of the cover on the light and improving the accuracy and reliability of the user or external device in capturing the light.

[0020] Optionally, a light guide rod is provided on the side of the light guide plate opposite to the viewing window, and part of the light guide rod is embedded in the viewing window.

[0021] The light guide rod is embedded in the viewing window. On one hand, the light guide rod can also uniformly process the light. When the user observes the light emitted from the cover, they directly observe the uniform light transmitted by the light guide rod, which can improve the user experience. On the other hand, the embedding of the light guide rod in the viewing window can also play a positioning role in the installation and connection of the light guide plate and the cover, making the installation and connection of the light guide plate and the cover more convenient.

[0022] Optionally, the light guide plate can be entirely transparent.

[0023] In this way, light can pass through all parts of the light guide plate, eliminating the need to designate light-transmitting areas based on the location of the light-emitting device to transmit light from it. Furthermore, the entire light guide plate in this application can be made from a single material, reducing the manufacturing difficulty.

[0024] Secondly, this application provides an electricity meter, including any of the meter cover structures described in the first aspect above.

[0025] The beneficial effects of the electricity meter provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an electricity meter according to an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of a cover structure according to an embodiment of this application.

[0028] Figure 3 This is an exploded view of a cover structure according to an embodiment of this application.

[0029] Figure 4 This is one of the top views of a cover according to an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of a circuit board according to an embodiment of this application.

[0031] Figure 6 This is a schematic diagram of a light guide plate according to an embodiment of this application.

[0032] Figure 7 This is an axonometric view of a cover according to an embodiment of this application.

[0033] Figure 8 This is a second top view of a cover according to an embodiment of this application.

[0034] Figure 9 This is a cross-sectional view of a cover structure according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100: Cover structure; 10: Circuit board; 11: Light-emitting device; 101: Indicator area; 102: Display area; 111: Light-emitting diode; 112: Display screen; 12: Button body; 20: Cover; 21: Viewing window; 22: Light shield; 221: First sub-board; 222: Second sub-board; 211: First sub-hole; 212: Second sub-hole; 23: Keycap; 30: Light guide plate; 31: Mounting through hole; 32: First sealing rib; 33: Second sealing rib; 34: Light guide post; 35: Light guide rod; 36: Sealing rib; 200: Energy meter; 201: Base; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0039] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0041] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application 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 application.

[0042] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0043] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection fixed by spacers, such as a connection fixed by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0046] For example, such as Figure 1 As shown in the figure, this application provides an electricity meter 200, which includes as follows: Figure 2 The watch cover structure 100 is shown.

[0047] An electricity meter 200 is a device used to measure and record electricity consumption. It can detect parameters such as voltage, current, and power, and detect any abnormalities in electricity use to ensure electrical safety. The meter cover structure 100, as the outer shell of the electricity meter 200, serves to protect the electricity meter 200 and provide interactive support.

[0048] This application improves the cover structure 100 to enhance the interactive support provided by the electricity meter 200, so that users can judge the working status of the electricity meter 200 through the light-emitting information of the cover structure 100, thereby reducing the possibility of misjudging the working status of the electricity meter 200.

[0049] Furthermore, the cover structure 100 can also interact with external devices, such as a light pulse receiver. The light pulse receiver can capture the light pulse signal emitted by the cover structure 100 and convert it into a processable electrical signal to measure energy consumption or calibrate the energy meter 200. The improvements to the cover structure 100 made in this application can also improve the accuracy of the energy meter 200's interaction with external devices.

[0050] The cover structure 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0051] Reference Figure 2 , Figure 3 and Figure 4 As shown, the watch cover structure 100 provided in this application includes a circuit board 10, a cover body 20, and a light guide plate 30. The circuit board 10 has at least two light-emitting devices 11 spaced apart. The cover body 20 is stacked on top of the circuit board 10. The cover body 20 has at least two viewing windows 21, each corresponding to one of the light-emitting devices 11. A light-shielding plate 22 is provided on the side of the cover body 20 facing the circuit board 10, located between two adjacent viewing windows 21. The light guide plate 30 is located between the circuit board 10 and the cover body 20. Light is allowed to pass through the light guide plate 30 at positions opposite the light-emitting devices 11. The light guide plate 30 has mounting holes 31 through which the light-shielding plate 22 passes, blocking the light emitted by adjacent light-emitting devices 11.

[0052] In this application, the meter cover structure 100 has a status indication function. When the meter cover structure 100 is installed in the electricity meter 200, the status indication function of the meter cover structure 100 can reflect different operating conditions of the electricity meter 200. In this way, the user can know the operating status of the electricity meter 200 through the meter cover structure 100.

[0053] In this embodiment, the watch cover structure 100 includes a cover body 20, a circuit board 10, and a light guide plate 30 stacked together. The cover body 20 and the light guide plate 30 can cooperate to guide the light emitted by the light-emitting device 11 on the circuit board 10, so that the light emitted by the light-emitting device 11 can be emitted through the cover body 20 to realize the status indication function of the watch cover structure 100.

[0054] In the watch cover structure 100 proposed in this application, at least two light-emitting devices 11 are provided on the circuit board 10. The circuit board 10 can control the light-emitting devices 11 to emit light, so that the at least two light-emitting devices 11 can cooperate to realize the status indication function of the watch cover structure 100.

[0055] Specifically, circuit board 10 can control one of the light-emitting devices 11 to emit light, and different light-emitting devices 11 emitting light can indicate different operating conditions of the electricity meter 200. Alternatively, circuit board 10 can also control at least two light-emitting devices 11 to emit light to indicate another operating condition of the electricity meter 200. Or, circuit board 10 can also control the light-emitting devices 11 to emit different colors of light, or control the light-emitting devices 11 to flash, etc., to indicate other operating conditions of the electricity meter 200, etc.

[0056] The cover 20 has at least two viewing windows 21, and the position on the light guide plate 30 opposite to the light-emitting device 11 is light-transmitting. Therefore, when the light-emitting device 11 emits light, the light emitted by the light-emitting device 11 can be emitted from the viewing windows 21 through the light guide plate 30, so that the user or external device can receive the light emitted by the light-emitting device 11, thereby judging the working status of the electricity meter 200 or measuring and calibrating the electricity consumption of the electricity meter 200, etc.

[0057] In this application, at least two viewing windows 21 are correspondingly positioned opposite at least two light-emitting devices 11. A light-shielding plate 22 is provided on the side of the cover 20 facing the circuit board 10, and a mounting through-hole 31 is provided on the light guide plate 30, through which the light-shielding plate 22 passes. Since the light-shielding plate 22 is located between two adjacent viewing windows 21, when one of the light-emitting devices 11 emits light, the light can directly exit through its corresponding viewing window 21. Because light has scattering properties, the light can also exit in other directions besides the viewing window corresponding to the light-emitting device 11.

[0058] When light shines on the viewing window 21 corresponding to another light-emitting device 11 adjacent to the first light-emitting device 11, the light-shielding plate 22 can block the light. In this way, the possibility that when one light-emitting device 11 emits light, the light emitted by that light-emitting device 11 is emitted through a viewing window 21 that is not its corresponding one can be reduced, which could lead to the user capturing incorrect light emission information and thus misjudging the working status of the electricity meter 200.

[0059] In addition, when the electricity meter 200 is used in conjunction with external devices such as a light pulse receiver, the setting of the light shield 22 can reduce the possibility that the external device may capture incorrect light emission information, which could lead to errors in the measurement or calibration of the electricity consumption of the electricity meter 200.

[0060] It should be noted that the circuit board 10 may be equipped with logic circuits or microcontrollers, which can control at least two light-emitting devices 11 so that the at least two light-emitting devices 11 can emit light in different mechanisms.

[0061] In the energy meter 200 equipped with the meter cover structure 100, the circuit board 10 can detect parameters such as voltage, current, and power inside the energy meter 200 through logic circuits or a microcontroller, and obtain the operating status of the energy meter 200 through calculation, such as normal operation, overload, communication abnormality, and undervoltage. Then, the logic circuit or microcontroller can match the operating status of the energy meter 200 with the light-emitting mechanism of the light-emitting device 11, and control the corresponding light-emitting device 11 to emit light.

[0062] In the embodiments of this application, the light-emitting device 11 may include different components, and the different components can be set in different ways, which will be described in the following ways.

[0063] Method 1, such as Figure 5 As shown, the circuit board 10 has an indicator area 101, and the light-emitting device 11 includes light-emitting diodes 111, with at least two light-emitting diodes 111 connected to the indicator area 101. That is, the light-emitting device 11 can be a light-emitting diode 111 capable of emitting light, and at least two light-emitting diodes 111 can cooperate to indicate different operating conditions of the energy meter 200.

[0064] In this method, such as Figure 6 As shown, the light guide plate 30 has a first light guide area, which is opposite to the indicator area 101. A mounting through hole 31 is provided in the first light guide area. A first sealing rib 32 is provided on the side of the first light guide area facing the cover 20. The first sealing rib 32 extends along the periphery of the first light guide area and is fused to the cover 20.

[0065] The light guide plate 30 has a first light guide area opposite to the indicator area 101. Therefore, when any one of the at least two light-emitting diodes 111 emits light, light can be transmitted to the cover 20 through the first light guide area so that the cover 20 can indicate the state of the light-emitting device 11 so that the user or external device can capture it.

[0066] In this application, the mounting through-hole 31 can be specifically located in the first light guide area, so that the light shield 22 on the cover 20 can extend into the first light guide area. Since the light shield 22 is located between two adjacent viewing windows 21, in the first light guide area, the light shield 22 can be positioned opposite to two adjacent light-emitting diodes 111. Thus, the light shield 22 can block the light from different light-emitting diodes 111, thereby reducing the cross-light emission of different light-emitting diodes 111 in the first light guide area, and preventing the viewing windows 21 from emitting light from illuminating.

[0067] In this embodiment of the application, a first sealing rib 32 is provided on the first light guide area. Since the first sealing rib 32 extends along the periphery of the first light guide area, the first sealing rib 32 can be provided around the center of the first light guide area, that is, the first sealing rib 32 is provided in a circle on the first light guide area.

[0068] Since the first sealing rib 32 is located on the side facing the cover 20, the first sealing rib 32 is positioned towards the cover 20. Thus, the connection between the light guide plate 30 and the cover 20 can be achieved through the first sealing rib 32. Specifically, the first sealing rib 32 can be fused to the cover 20, thereby achieving the connection between the light guide plate 30 and the cover 20.

[0069] Fusion bonding is a method of joining materials by heating them to locally melt them, followed by atomic-level bonding during cooling. The key feature of this method is that the two materials can be completely fused together, forming a continuous physical interface at the joint, thus avoiding the gaps present in traditional mechanical connections.

[0070] The fusion connection between the first sealing rib 32 and the cover 20 in this application creates a continuous physical interface, achieving a gapless connection between them. Thus, the first sealing rib 32, the light guide plate 30, and the cover 20 can enclose a protective chamber. This reduces the possibility of external impurities (moisture and dust, etc.) entering the first light guide area through the cover 20 and affecting its light transmission effect.

[0071] Furthermore, the connection between the first sealing rib 32 and the cover 20 can reduce the possibility of external impurities entering the protective chamber, resulting in fewer impurities inside the protective chamber. Further, it can also reduce the possibility of impurities in the protective chamber falling onto the circuit board 10 through the mounting through-hole 31, thereby reducing the possibility of the circuit board 10 malfunctioning due to falling impurities.

[0072] In addition, the connection between the first sealing rib 32 and the cover 20 not only shields against external impurities but also protects against static electricity. That is, the fused connection between the first sealing rib 32 and the cover 20 reduces the gap between the light guide area and the cover 20, preventing static electricity from potentially entering the watch cover structure 100 through the gap and even reaching the circuit board 10, causing damage to components on the circuit board 10 and program malfunctions.

[0073] It should be noted that, as Figure 2 , Figure 5 and Figure 7As shown, the meter cover structure 100 also includes a button assembly, which specifically includes a keycap 23 and a button body 12. The keycap 23 is disposed on the cover 20 and can be pressed by the user to slide relative to the cover 20. The button body 12 is disposed on the circuit board 10, and the keycap 23 cooperates with the button body 12. The button assembly can cooperate with the light-emitting device 11 to realize the interaction between the energy meter 200 and the user.

[0074] The sliding fit between the keycap 23 and the cover 20 inevitably creates a gap between them. Consequently, external impurities and static electricity could easily enter the watch case structure 100 through this gap. The first sealing rib 32 in this application is designed to reduce the possibility of impurities and static electricity that reach the watch case structure 100 through the cover 20 and then re-enter the protective chamber.

[0075] It is understandable that the gap between the keycap 23 and the cover 20 is not the only way for impurities and static electricity to pass through the cover 20. The first sealing rib 32 in this application is not only for protecting impurities and static electricity passing through the gap between the keycap 23 and the cover 20, but also for protecting impurities and static electricity passing through the cover 20 through other means.

[0076] It should also be noted that, in order to ensure a strong connection between the light guide plate 30 and the cover 20, and to guarantee the overall sealing of the watch cover structure 100, a sealing rib 36 can be provided on the side of the light guide plate 30 facing the cover 20, such as... Figure 6 As shown. In this way, the sealing rib 36 can also be fused to the cover 20.

[0077] The first closing rib 32 and the sealing rib 36 can be two separate structures, or a portion of the sealing rib 36 at the edge of the indicator area 101 can form a portion of the first closing rib 32.

[0078] In order to further protect against external impurities and static electricity, and reduce the possibility of impurities and static electricity entering the cover structure 100 and causing abnormal function of the circuit board 10, this application also improves the position of the mounting through hole 31 on the light guide plate 30.

[0079] like Figure 3 and Figure 6 As shown, a second sealing rib 33 may be provided on the side of the light guide plate 30 facing the cover 20. The second sealing rib 33 extends along the circumferential direction of the mounting through hole 31 and is fused to the cover 20. The first sealing rib 32, the second sealing rib 33, the light guide plate 30, and the cover 20 together form a sealed space.

[0080] With the above configuration, the second sealing rib 33 can also be evenly arranged around the mounting through hole 31, or in other words, the second sealing rib 33 is arranged in a circle around the axis of the mounting through hole 31. Since the second sealing rib 33 is also connected to the cover 20 by fusion bonding, the side of the second sealing rib 33 facing the cover 20 can achieve a gapless connection with the cover 20.

[0081] Thus, the first sealing rib 32, the second sealing rib 33, the light guide plate 30, and the cover 20 can work together to form a sealed space, which provides good protection against external impurities and static electricity. Even if a small amount of impurities or static electricity does enter the protective chamber, the second sealing rib 33 can reduce the possibility of impurities and static electricity entering the mounting through hole 31 and thus affecting the normal operation of the circuit board 10.

[0082] It should be noted that, as Figure 1 As shown, the electricity meter 200 also includes a base 201, which can be snapped together with the meter cover structure 100 to form an installation space. This installation space can be used to install other components, such as a communication module and a power module. The formation of this enclosed space also reduces the possibility of impurities and static electricity entering the installation space through the meter cover structure 100 and affecting the operation of the communication module and power module.

[0083] It should also be noted that the fusion connection can be any one of ultrasonic welding, laser welding or infrared welding. The specific connection method between the first sealing rib 32 and the cover 20, and the specific connection method between the second sealing rib 33 and the cover 20 are not specifically limited in this embodiment.

[0084] Method 2, such as Figure 5 As shown, the circuit board 10 has an indicator area 101 and a display area 102. The light-emitting device 11 includes a display screen 112 and a light-emitting diode 111. The display screen 112 is connected to the display area 102, and the light-emitting diode 111 is connected to the indicator area 101.

[0085] The light-emitting devices 11 on the circuit board 10 can be of different types, specifically including a display screen 112 and light-emitting diodes 111. The display screen 112 and light-emitting diodes 111 can work together to indicate different operating conditions of the electricity meter 200. Furthermore, the display screen 112 can display images and text information, which can intuitively display more information about the electricity meter 200, making it easier for users to understand and grasp the operating status of the electricity meter 200.

[0086] In this method, such as Figures 3 to 5As shown, the light-shielding plate 22 includes a first sub-plate 221. In the stacking direction of the circuit board 10 and the cover 20, the projection of the first sub-plate 221 is located between the projection of the indicator area 101 and the projection of the display area 102. The first sub-plate 221 is used to block the light emitted from the display area 102 and the light emitted from the indicator area 101. Thus, in the distribution direction of the indicator area 101 and the display area 102, the first sub-plate 221 can be located between the indicator area 101 and the display area 102.

[0087] In this way, the first sub-board 221 can block the light emitted from the display area 102 and the light emitted from the indicator area 101, so that the light emitted from the indicator area 101 is only the light emitted from the display screen 112, and the light emitted from the indicator area 101 is only the light emitted from the light-emitting diode 111. This reduces the mutual interference between the light emitted from the display screen 112 and the light emitted from the light-emitting diode 111, making it difficult for users or external devices to distinguish the source of the light.

[0088] At this time, the light guide plate 30 can have a first light guide area and a second light guide area. The first light guide area is positioned opposite to the light-emitting diode 111, and the second light guide area is positioned opposite to the display screen 112. Thus, the light emitted by the light-emitting diode 111 can be transmitted through the first light guide area, and the light emitted by the display screen 112 can be transmitted through the second light guide area. The first sub-board 221 is located between the indicator area 101 and the display area 102, and correspondingly, the mounting through-hole 31 on the light guide plate 30 is located between the first light guide area and the second light guide area.

[0089] In the embodiments of this application, such as Figure 5 , Figure 7 and Figure 8 As shown, the viewing hole 21 may also include different types of viewing holes 21, namely a first sub-hole 211 opposite to the display screen 112 and a second sub-hole 212 opposite to the light-emitting diode 111. The display content of the display screen 112 can be exposed through the first sub-hole 211, and the light emitted by the light-emitting diode 111 can be exposed through the second sub-hole 212.

[0090] In the following description, for ease of description, the stacking direction of the circuit board 10 and the cover 20 will be referred to as the third direction Z.

[0091] In method two, the number of light-emitting diodes 111 can be multiple. In this case, to reduce the possibility of mutual interference between the light emitted by multiple light-emitting diodes 111, the light-shielding plate 22 may further include a second sub-plate 222. The second sub-plate 222 can block the light emitted by adjacent light-emitting diodes 111, such as... Figure 5 As shown and Figure 8 As shown.

[0092] Specifically, the second sub-board 222 can be connected to the cover 20 at a position opposite to the indicator area 101. In the third direction Z, the projection of the second sub-board 222 is located between two adjacent light-emitting diodes (LEDs), and the second sub-board 222 is used to block the light emitted by the two adjacent LEDs 111. In this way, the cross-light emission of light from different LEDs 111 at the first light guide area can be reduced, which may cause the second sub-hole 212, which should not emit light, to light up.

[0093] In some embodiments, such as Figure 3 and Figure 4 As shown, the cover structure 100 may have intersecting first direction X and second direction Y, and the plane formed by the first direction X and the second direction Y intersects with a third direction Z.

[0094] Generally, the display screen 112 is composed of a large number of LEDs, each of which can be independently controlled to emit light. By controlling the light emission of different LEDs, the display screen 112 can display complex content such as images or text. Therefore, the size of the display screen 112 is generally larger than the size of the LEDs 111.

[0095] Furthermore, due to the size difference between the display screen 112 and the light-emitting diode 111, it is generally believed that the light emitted by the display screen 112 will affect the light-emitting diode 111 to a certain extent, while the light emitted by the light-emitting diode 111 will have a very small, or even negligible, effect on the display screen 112.

[0096] In this application, the indicator area 101 and the display area 102 are distributed along a first direction X. In the second direction Y, the size of the display area 102 is larger than the size of the first sub-board 221, and the size of the first sub-board 221 is greater than or equal to the size of the indicator area 101. In the first direction X, the projection of the first sub-board 221 covers the projection of the indicator area 101, as shown below. Figure 5 and Figure 8 As shown.

[0097] With the above configuration, in the second direction Y, the first sub-board 221 can extend only to the location of the indicator area 101, or extend outwards from the location of the indicator area 101, without extending to the boundary of the display area 102. This reduces the size of the first sub-board 221, thereby lowering the material cost of manufacturing the cover 20, and also ensures the light-blocking function of the first sub-board 221, reducing the impact of light emitted from the display screen 112 on the light-emitting diode 111.

[0098] In this embodiment, the indicator area 101 can be located within the range of the display area 102 in the first direction X, meaning that the projection of the display area 102 can cover the projection of the indicator area 101. In this case, the light emitted from the display area 102 will significantly affect the indicator area 101, and the first sub-board 221 can effectively block more of the light. Of course, the indicator area 101 and the display area 102 can also be slightly misaligned. This embodiment does not specifically limit the relative positional relationship between the indicator area 101 and the display area 102, as long as the first sub-board 221 can effectively block the light emitted from the display area 102 towards the indicator area 101.

[0099] It should be noted that, in this embodiment, the display screen 112 may include a liquid crystal display (LCD) and a backlight. The LCD itself does not emit light, while the backlight provides a light source for the LCD so that the display screen 112 can display normally. In this application, the first sub-board 221 mainly blocks the light generated by the backlight, reducing the possibility that the light generated by the backlight may erroneously illuminate the viewing window 21 corresponding to the light-emitting diode 111.

[0100] Of course, the display screen 112 can also be an active light-emitting display screen. In this case, the first sub-board 221 mainly blocks the light generated by the active light-emitting display screen.

[0101] Wherein, the first direction X intersects with the second direction Y, and there may be an angle between the first direction X and the second direction Y. In the embodiments of this application, the angle between the first direction X and the second direction Y may be 70°, 78°, 85°, or 99°, etc.

[0102] The plane formed by the first direction X and the second direction Y intersects with the third direction Z, and the angle between them can be 70°, 78°, 85°, or 99°, etc. As a preferred approach, the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other.

[0103] In addition, in Method Two, a rib similar to the second sealing rib 33 can be provided around the mounting through hole 31, and a rib similar to the first sealing rib 32 can be provided around the display area 102 to improve the protection against external impurities and static electricity. For details, please refer to the foregoing description; the embodiments of this application will not be repeated here.

[0104] In some embodiments, such as Figure 3 , Figure 5 and Figure 6 As shown, a light guide column 34 can be provided on the side of the light guide plate 30 opposite to the light-emitting device 11. The light guide column 34 is used to conduct the light emitted by the light-emitting device 11 to the cover 20 for display through the viewing window 21.

[0105] Thus, when the light-emitting device 11 emits light, the light can first be transmitted to the light guide column 34, which can concentrate and homogenize the light so that the light can be clearly transmitted to the viewing window 21 for display, thereby improving the display effect of the cover 20 on the light and improving the accuracy and reliability of the user or external device in capturing the light.

[0106] In addition, when a user observes the watch cover structure 100, besides observing it from directly above, i.e., in the stacking direction of the circuit board 10, cover 20, and light guide plate 30, they may also observe it from different angles. For example, as Figure 9 As shown, if the LED 111 on the right side of the diagram emits light, and the user observes along the direction of the arrow, the user can observe the window 21 corresponding to the LED 111 on the right side emitting light. At the same time, the user can also observe the light shield 22 through the light guide post 34 on the right side, which can block the user's line of sight. In this way, the user will not see the LED 111 on the left side.

[0107] In the related technologies where the light-shielding plate 22 is not provided, if the user observes from right to left, in addition to observing the light emitting from the viewing window 21 corresponding to the LED 111 on the right, the user can also see the light-emitting device 11 on the left through the light guide column 34. However, due to the scattering characteristics of light, some light can reach the light-emitting device 11 on the left. Therefore, the user can actually see that both the LED 111 on the right and the LED 111 on the left are emitting light, which can easily lead to user misunderstanding.

[0108] In some embodiments, such as Figure 2 , Figure 6 and Figure 7 As shown, a light guide rod 35 can be provided on the side of the light guide plate 30 opposite to the viewing window 21, and part of the light guide rod 35 is embedded in the viewing window 21.

[0109] The light guide rod 35 is embedded in the viewing window 21. On the one hand, the light guide rod 35 can also uniformly process the light. When the user observes the light emitted from the cover 20, what they directly observe is the uniform light transmitted by the light guide rod 35, which can improve the user experience. On the other hand, the embedding of the light guide rod 35 and the viewing window 21 can also play a positioning role in the installation and connection of the light guide plate 30 and the cover 20, making the installation and connection of the light guide plate 30 and the cover 20 more convenient.

[0110] It should be noted that, compared to the display screen 112, the light-emitting diode 111 is a point light source, which is small in size and has concentrated brightness. However, if used directly, it will cause uneven light dispersion, resulting in localized overly bright or dark areas. Therefore, the light guide pillar 34 and the light guide rod 35 can be set at positions opposite to the light-emitting diode 111. The display screen 112 itself uses a surface light source, resulting in uniform light distribution. Furthermore, due to the larger size of the display screen 112, the light guide pillar 34 and the light guide rod 35 generally do not need to be set at positions on the light guide plate 30 opposite to the display screen 112.

[0111] In some embodiments, the light guide plate 30 is entirely transparent.

[0112] In this way, light can pass through all parts of the light guide plate 30, eliminating the need to set up light-transmitting areas according to the position of the light-emitting device 11 to transmit the light from the light-emitting device 11. The light guide plate 30 in this application can be made of the same material throughout, reducing the manufacturing difficulty of the light guide plate 30.

[0113] The light guide plate 30 is made of any one of polycarbonate (PC), polystyrene (PS), and polypropylene (PP). These materials are all transparent and have good light transmission properties. Furthermore, they are suitable for fusion bonding, making them ideal materials for manufacturing the light guide plate 30.

[0114] Of course, the light guide plate 30 can also be made of other materials. This application embodiment does not specifically limit the specific material of the light guide plate 30.

[0115] It should be noted that, in addition to the above-mentioned overall light-transmitting configuration of the light guide plate 30, the light guide plate 30 can also have other configurations. For example, only the position of the light guide plate 30 opposite to the light-emitting device 11 is light-transmitting, while other positions are opaque, etc.

[0116] In this embodiment, since the light-shielding plate 22 is located between two adjacent viewing windows 21, when one of the light-emitting devices 11 emits light, the light can directly pass through the corresponding viewing window 21. However, when the light shines towards the viewing window 21 corresponding to the other light-emitting device 11 adjacent to that device, the light-shielding plate 22 can block the light. This reduces the possibility that when one light-emitting device 11 emits light, the light emitted by that device might pass through a different viewing window 21, causing the user to capture incorrect light emission information and potentially leading to misjudgments of the operation of the electricity meter 200.

[0117] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A watch cover structure, characterized in that, The cover structure includes: A circuit board having at least two light-emitting devices spaced apart on it; A cover is stacked on top of the circuit board. The cover has at least two viewing windows, each of which corresponds to at least two light-emitting devices. A light-shielding plate is provided on the side of the cover facing the circuit board, and the light-shielding plate is located between two adjacent viewing windows. A light guide plate is located between the circuit board and the cover. The position on the light guide plate opposite to the light-emitting device is light-transmitting. The light guide plate is provided with a mounting through hole. A light shield is inserted through the mounting through hole. The light shield is used to block the light emitted by the adjacent light-emitting device.

2. The watch cover structure according to claim 1, characterized in that, The circuit board has an indicator area, and the light-emitting device includes light-emitting diodes, with at least two light-emitting diodes connected to the indicator area; The light guide plate has a first light guide area, which is opposite to the indicator area. The mounting through hole is disposed in the first light guide area. A first sealing rib is disposed on the side of the first light guide area facing the cover. The first sealing rib extends along the periphery of the first light guide area and is fused to the cover.

3. The cover structure according to claim 2, characterized in that, The light guide plate is provided with a second sealing rib on the side facing the cover. The second sealing rib extends along the circumferential direction of the mounting through hole and is fused to the cover. The first sealing rib, the second sealing rib, the light guide plate, and the cover form a sealed space.

4. The watch cover structure according to claim 1, characterized in that, The circuit board has an indicator area and a display area. The light-emitting device includes a display screen and a light-emitting diode. The display screen is connected to the display area, and the light-emitting diode is connected to the indicator area. The light-shielding plate includes a first sub-plate. In the stacking direction of the circuit board and the cover, the projection of the first sub-plate is located between the projection of the indicator area and the projection of the display area. The first sub-plate is used to block the light emitted from the display area and the light emitted from the indicator area.

5. The cover structure according to claim 4, characterized in that, The number of light-emitting diodes is multiple, and the light-shielding plate also includes a second sub-plate, which is connected to the cover at a position opposite to the indicator area. In the stacking direction of the circuit board and the cover, the projection of the second sub-board is located between two adjacent light-emitting diodes, and the second sub-board is used to block the light emitted by the two adjacent light-emitting diodes.

6. The watch cover structure according to claim 4, characterized in that, The watch cover structure has intersecting first and second directions, the plane formed by the first and second directions intersects the stacking direction of the circuit board and the cover, and the indicator area and the display area are distributed along the first direction; In the second direction, the size of the display area is larger than the size of the first sub-board, the size of the first sub-board is greater than or equal to the size of the indicator area, and in the first direction, the projection of the first sub-board covers the projection of the indicator area.

7. The watch cover structure according to claim 1, characterized in that, A light guide column is provided on the side of the light guide plate opposite to the light-emitting device. The light guide column is used to conduct the light emitted by the light-emitting device to the cover so as to be displayed through the viewing window.

8. The watch cover structure according to claim 1, characterized in that, A light guide rod is provided on the side of the light guide plate opposite to the viewing window, and part of the light guide rod is embedded in the viewing window.

9. The watch cover structure according to claim 1, characterized in that, The light guide plate is entirely transparent to light.

10. An electricity meter, characterized in that, The electricity meter includes the cover structure as described in any one of claims 1-9.

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