Electronic doorbell

Abstract

This invention discloses an electronic doorbell, which includes a carrier, a first antenna, and a second antenna. The first antenna is fixed to the carrier. The second antenna is disposed on the carrier at a distance from the first antenna. This invention, through a dual-antenna design, makes the wireless communication between the electronic doorbell and the mobile terminal more stable. By separating the first and second antennas, isolation is achieved, preventing mutual interference and thus improving the radiation performance of both antennas.

Description

Technical Field

[0001] This invention relates to antennas, and more specifically to an electronic doorbell. Background Technology

[0002] To meet user needs, electronic doorbells are becoming increasingly versatile. In addition to traditional functions such as real-time visitor alerts, video intercoms, and musical doorbells, they now also feature AI facial recognition, motion detection, night vision, and voice changing capabilities. When a user is not home, if someone rings the doorbell, they will receive a notification on their mobile phone. The homeowner can then view the visitor's information, communicate with them, and control the door lock. This way, even when the homeowner is not home, visiting guests don't have to wait outside. When the homeowner is busy and unable to open the door, they can control it via their mobile phone without having to get up and walk to the door.

[0003] To achieve the above functions, communication with the mobile terminal is required via an antenna. Doorbells typically use Bluetooth / WiFi antennas, but the communication range of Bluetooth / WiFi antennas is relatively short. If the user's mobile phone is too far from the doorbell, it may not be able to communicate with the doorbell, thus preventing the aforementioned functions such as viewing visitors, conversing with visitors, and controlling the door lock from being performed via mobile phone. Summary of the Invention

[0004] The main objective of this invention is to provide an electronic doorbell that achieves better signal transmission.

[0005] To achieve the above objectives, the present invention proposes an electronic doorbell, the electronic doorbell comprising:

[0006] carrier;

[0007] The first antenna is fixed to the carrier;

[0008] A second antenna is disposed on the carrier at a distance from the first antenna, and the communication distance of the second antenna is less than that of the first antenna.

[0009] In one embodiment, the minimum distance between the first antenna and the second antenna is not less than 20 mm.

[0010] In one embodiment, the first antenna is a LoRa antenna, and the second antenna is a Bluetooth or Wi-Fi antenna.

[0011] In one embodiment, the electronic doorbell further includes a front shell and an electronic control board, wherein the carrier is the front shell or the electronic control board;

[0012] Both the first antenna and the second antenna are disposed on the front shell;

[0013] Alternatively, both the first antenna and the second antenna may be mounted on the electronic control board;

[0014] Alternatively, the first antenna and the second antenna may be respectively located on the front shell and the electronic control board.

[0015] In one embodiment, the electronic doorbell further includes a cover plate;

[0016] The cover plate and the front shell form a sealed cavity, and the first antenna, the second antenna and the electronic control board are disposed in the sealed cavity.

[0017] In one embodiment, the electronic doorbell further includes a doorbell button;

[0018] The doorbell button is located on the front cover, and the first antenna and the second antenna are located on both sides of the doorbell button.

[0019] In one embodiment, the electronic doorbell further includes a third antenna;

[0020] The minimum distance between the third antenna and the first and second antennas is not less than 20mm.

[0021] In one embodiment, the third antenna is one of a Bluetooth antenna, a Wi-Fi antenna, and a LoRa antenna.

[0022] In one embodiment, the electronic control board is disposed on the cover plate and abuts against the first antenna, the second antenna, and the third antenna;

[0023] Alternatively, the electronic control board is disposed on the front shell, and the first antenna, the second antenna, and the third antenna are mounted on the electronic control board.

[0024] In one embodiment, the electronic doorbell further includes a heat dissipation component, which is disposed close to the front shell near the electronic control board.

[0025] This invention utilizes a dual-antenna design to make wireless communication between the electronic doorbell and the mobile terminal more stable. By spacing the first and second antennas apart, the two antennas are isolated, preventing mutual interference and thus improving the radiation performance of both antennas. 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the structure of an embodiment of the electronic doorbell of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of an embodiment of the electronic doorbell of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of an embodiment of the first heat sink of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of an embodiment of the second and third heat sinks of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of an embodiment of the electronic doorbell of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of an embodiment of the antenna of the present invention;

[0033] Figure 7 This is a schematic diagram of another embodiment of the antenna of the present invention;

[0034] Figure 8 This is a schematic diagram of an embodiment of the antenna of the present invention;

[0035] Figure 9 This is a schematic diagram of an embodiment of the antenna of the present invention.

[0036] label name label name 110 Front shell 120 Electronic control board 131 First antenna 132 Second antenna 141 First heat sink 142 Second heat sink 143 Third heat sink 144 Fourth heat sink 150 cover plate 160 Waterproof ring 171 First Radiation Section 172 Second Radiation Section 173 Power supply section 174 Feed the Ministry of Land 175 Metal bumps 176 Fixing part 177 positioning holes

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0041] Reference Figures 1-7 This invention proposes an electronic doorbell, which includes:

[0042] carrier;

[0043] The first antenna 131 is fixed to the carrier;

[0044] The second antenna 132 is disposed on the carrier at a distance from the first antenna 131, and the communication distance of the second antenna 132 is less than that of the first antenna 131.

[0045] Existing electronic doorbells typically use a single Bluetooth or WiFi antenna to communicate with mobile terminals or connect to the Internet of Things (IoT). However, Bluetooth or WiFi antennas have limited transmission distances. This embodiment employs a dual-antenna design, where the first antenna 131 is used for long-distance communication, and the second antenna 132 is used for short-distance communication. However, antennas operate by receiving electromagnetic waves, and various frequencies of electromagnetic waves exist in space. If the two antennas are too close, when one antenna receives electromagnetic waves, it may receive unrelated electromagnetic waves of the same frequency, thus interfering with normal communication. Therefore, this embodiment sets the first antenna 131 and the second antenna 132 at a distance to achieve spatial isolation and reduce mutual interference between the two antennas.

[0046] The first antenna 131 can be a LoRa antenna, and the second antenna 132 can be any of a Bluetooth antenna, a WiFi antenna, or a Zigbee antenna. LoRa antennas can achieve long-range communication up to 10 miles in line-of-sight conditions, with deep penetration capabilities through concrete and foliage, and ultra-low power consumption. LoRa boasts extremely high energy efficiency and anti-interference capabilities. Its low receiving bandwidth and unique coding scheme enable LoRa radios to achieve receiver sensitivity as low as -140dBm. These characteristics make LoRa antennas ideal for long-range communication applications between low-power devices. However, with the continuous development of LoRa and the increasing deployment of LoRa devices and networks, some spectrum interference may occur. LoRa deployment requires users to build their own networks. Bluetooth antennas are suitable for short-range data transmission, have low power consumption, are convenient for battery-powered devices, and support the transmission of text, images, audio, and video with high speed and low latency. WiFi antennas are also suitable for short-range data transmission; users can access the network from anywhere within the wireless signal coverage area, and users connected to the wireless LAN can move while maintaining a connection. In this embodiment, a wireless communication module is constructed using both a LoRa antenna and a Bluetooth / WiFi antenna. The Bluetooth / WiFi antenna solves the problem of low-power short-range connectivity, while the LoRa antenna solves the problem of low-power long-range connectivity, enabling the electronic doorbell to achieve longer-range communication and lower power consumption.

[0047] Alternatively, both antenna 131 and antenna 132 can be Bluetooth / WiFi antennas, meaning the electronic doorbell can employ a dual WiFi antenna design, a dual Bluetooth antenna design, or a combination of WiFi and Bluetooth antennas. If one antenna fails to communicate, the other antenna can still be used, improving the reliability of the electronic doorbell.

[0048] The electronic doorbell also includes a front housing 110, which forms a cavity for accommodating the first antenna 131 and the second antenna 132. Due to the limited internal space of the cavity, in addition to the first antenna 131 and the second antenna 132, components such as a camera, speaker, display screen, and electronic control board 120 must also be placed. Within this limited space, the placement of the first antenna 131 and the second antenna 132 must be considered to achieve good isolation and avoid mutual interference. In this embodiment, the first antenna 131 and the second antenna 132 are placed alternately. For example, the first antenna 131 and the second antenna 132 are symmetrically placed on the same side of the front housing 110; or, the first antenna 131 and the second antenna 132 are symmetrically placed on opposite sides of the front housing 110; or, the first antenna 131 and the second antenna 132 are placed at two opposite corners of the front housing 110, thereby maintaining a certain distance between the first antenna 131 and the second antenna 132 to achieve spatial isolation. The distance between the first antenna 131 and the second antenna 132 is not less than 20 mm.

[0049] This invention utilizes a dual-antenna design to make wireless communication between the electronic doorbell and the mobile terminal more stable. By spacing the first and second antennas apart, the two antennas are isolated, preventing mutual interference and thus improving the radiation performance of both antennas.

[0050] In one embodiment, the minimum distance s between the first antenna 131 and the second antenna 132 is not less than 20 mm.

[0051] Reference Figure 2 Generally, the larger the minimum distance s between the first antenna 131 and the second antenna 132, the better the isolation. However, electronic doorbells have limited size. If the distance between the first antenna 131 and the second antenna 132 is too small, they will interfere with each other, affecting communication with the mobile terminal. Placing the first antenna 131 and the second antenna 132 within a limited space and setting the minimum distance s between them to be no less than 20mm can meet the minimum isolation requirements.

[0052] In one embodiment, the first antenna 131 is a LoRa antenna, and the second antenna 132 is a Bluetooth or Wi-Fi antenna.

[0053] In this embodiment, the wireless communication module of the electronic doorbell is constructed using a dual-antenna setup consisting of a LoRa antenna and a Bluetooth / WiFi antenna. The Bluetooth / WiFi antenna solves the problem of low-power short-range connectivity, while the LoRa antenna solves the problem of low-power long-range connectivity, enabling the electronic doorbell to achieve longer-range communication and lower power consumption.

[0054] The electronic doorbell also includes a front shell 110 and an electronic control board 120, wherein the carrier is the front shell 110 or the electronic control board 120;

[0055] Both the first antenna 131 and the second antenna 132 are disposed on the front shell 110;

[0056] Alternatively, both the first antenna 131 and the second antenna 132 may be disposed on the electronic control board 120;

[0057] Alternatively, the first antenna 131 and the second antenna 132 may be respectively located on the front shell 110 and the electronic control board 120.

[0058] In this embodiment, the control board 120 is provided with a first feed point and a second feed point. The first antenna 131 and the second antenna 132 are thermally fused to the front shell 110. The control board is positioned above the first antenna 131 and the second antenna 132, such that the first feed point and the second feed point of the control board 120 abut against the first antenna 131 and the second antenna 132, respectively. This makes the structure of the first antenna 131 and the second antenna 132 more stable, and the contact between the control board 120 and the first antenna 131 and the second antenna 132 more reliable, preventing frequency offset and improving the stability of signal transmission.

[0059] Alternatively, both the first antenna 131 and the second antenna 132 can be soldered onto the electronic control board 120, so that the first antenna 131 and the second antenna 132 are fixed to the first feed point and the second feed point of the electronic control board 120 respectively, making them less prone to displacement. At the same time, the first antenna and the second antenna can be kept away from electronic components on the front shell 100 (such as doorbell buttons, displays, cameras, etc.), reducing interference from electronic components to the antennas.

[0060] Alternatively, the first antenna 131 and the second antenna 132 can be respectively located on the front housing 110 and the electronic control board 120. For example, the first antenna 131 can be located on the front housing 110, and the second antenna 132 on the electronic control board 120; or, the first antenna 131 can be located on the electronic control board 120, and the second antenna 132 on the front housing 110. This reduces the area occupied by the two antennas on the front housing compared to having both antennas simultaneously on it. Furthermore, the first antenna 131 and the second antenna 132 can avoid the electronic components inside the electronic doorbell and be positioned in a more favorable location for signal transmission. For example, the first antenna can be located on the electronic control board, and the second antenna can be located near the edge of the front housing, away from the electronic components. With no obstructions at the edge of the front housing, antenna signal transmission is further facilitated.

[0061] In one embodiment, the electronic doorbell further includes a cover plate 150;

[0062] The cover plate 150 and the front shell 110 form a sealed cavity, and the first antenna 131, the second antenna 132 and the electronic control board 120 are disposed in the sealed cavity.

[0063] In this embodiment, the cover plate can be made of metal. After being assembled with the front shell using screws, the cover plate is installed on the door panel. The entire structure has a high fire resistance rating, high reliability, and facilitates heat dissipation. Alternatively, the cover plate can also be made of plastic.

[0064] The cover plate 150 and the front shell 110 form a sealed cavity, housing the first antenna 131, the second antenna 132, and the electronic control board 120 within the sealed cavity. This prevents dust particles and external collisions from damaging the electronic components inside the sealed cavity, thus protecting the first antenna 131, the second antenna 132, and the electronic control board 120. It also mitigates the impact of temperature changes, humidity changes, weather conditions, and other factors on the first antenna 131, the second antenna 132, and the electronic control board 120.

[0065] In one embodiment, the electronic doorbell further includes a doorbell button;

[0066] The doorbell button is located on the front cover, and the first antenna 131 and the second antenna 132 are respectively located on both sides of the doorbell button.

[0067] In this embodiment, the first antenna 131 and the second antenna 132 are respectively located on both sides of the doorbell button to achieve spatial separation between the first antenna and the second antenna and avoid mutual interference between the two antennas.

[0068] Electronic doorbells are installed on door panels, which are often made of metal to improve security and fire resistance. In addition, the cover plate 150 is also made of metal. It's understandable that metal has a coupling effect on antenna signals. Before the antenna receives electromagnetic waves, the metal absorbs some of the electromagnetic wave energy from the air, reducing the energy conversion efficiency of the entire communication system and thus affecting communication performance. Since the LoRa antenna and the Bluetooth / Wi-Fi antenna operate on the same frequency band, when the coupling degree of the cover plate 150 to both the LoRa and Bluetooth / Wi-Fi antennas is the same (i.e., the cover plate 150 absorbs the same amount of electromagnetic waves emitted or received by both), the interference between the LoRa and Bluetooth / Wi-Fi antennas is small. However, if the coupling degree of the cover plate 150 to the LoRa and Bluetooth / Wi-Fi antennas is different, the interference between them is greater.

[0069] In this embodiment, when the cover plate 150 is a regular shape such as a rectangle, rhombus, or circle, the first antenna 131 and the second antenna 132 are respectively disposed on both sides of the central axis of the cover plate 150, so that the minimum distance between the first antenna 131 and the second antenna 132 and the center point of the cover plate 150 is equal. The distances between each point on the cover plate 150 and the metal door panel around the electronic doorbell and the first antenna 131 and the second antenna 132 are axially symmetrical or centrally symmetrical, so that the total energy of the electromagnetic waves transmitted / received by the first antenna 131 and the second antenna 132 absorbed by the cover plate 150 and the metal door panel around the electronic doorbell is the same, that is, the coupling degree of the cover plate 150 and the metal door panel around the electronic doorbell with respect to the first antenna 131 and the second antenna 132 is the same, reducing the coupling difference between the first antenna 131 and the second antenna 132, thereby reducing the interference between the first antenna 131 and the second antenna 132 and improving the signal transmission efficiency.

[0070] In one embodiment, the electronic doorbell further includes a third antenna;

[0071] The third antenna is fixed on the front shell 110 or the electronic control board 120, and the minimum distance between the third antenna and the first antenna 131 and the second antenna 132 is not less than 20mm.

[0072] In this embodiment, there can be multiple third antennas. The third antenna can be located at a corner of the front housing 110 to ensure that the distance between it and the first antenna 131 and the second antenna 132 is as far as possible. To avoid mutual interference between antennas, in this embodiment, the distance between the third antenna and the first antenna 131 and the second antenna 132 is set to be no less than 20mm to achieve better isolation.

[0073] In one embodiment, the third antenna is one of a Bluetooth antenna, a Wi-Fi antenna, and a LoRa antenna.

[0074] In this embodiment, the electronic control board 120 is also provided with a third feed point. The third antenna can be disposed on the front shell 110 and abut against the electronic control board 120 disposed on the cover plate 150. Alternatively, the third antenna can be welded and fixed to the third feed point on the electronic control board 120.

[0075] This embodiment employs a dual WiFi antenna design, a dual Bluetooth antenna design, or a WiFi and Bluetooth antenna design. When one antenna has a weak signal, the other antenna can be used for short-range communication, improving the reliability of the electronic doorbell.

[0076] In one embodiment, the electronic control board 120 is disposed on the cover plate 150 and abuts against the first antenna 131, the second antenna 132 and the third antenna;

[0077] Alternatively, the electronic control board 120 is disposed on the front shell 110, and the first antenna 131, the second antenna 132 and the third antenna are mounted on the electronic control board 120.

[0078] In this embodiment, the electronic control board 120 is disposed on the cover plate 150, and the first antenna 131, the second antenna 132, and the third antenna are thermally fused to the front shell 110, ensuring the antenna positions are stable and preventing displacement that could affect antenna consistency. When the cover plate 150 and the front shell 110 are closed, the electronic control board 120 abuts against the first antenna 131, the second antenna 132, and the third antenna, making the contact between the feed points on the electronic control board 120 and the first antenna 131, the second antenna 132, and the third antenna more reliable, thereby avoiding poor contact between the antennas and the feed points that could affect communication performance.

[0079] Alternatively, the electronic control board 120 is disposed on the front shell 110, and the first antenna 131, the second antenna 132 and the third antenna are respectively welded to the feed point on the electronic control board 120, so that the contact area between the first antenna 131 and the second antenna 132 and the electronic control board 120 is fixed and not easily displaced.

[0080] In one embodiment, the electronic doorbell further includes a heat dissipation component, which is disposed close to the front cover 110 near the electronic control board 120.

[0081] It is understandable that the antenna, circuitry on the control board 120, and other electronic components inside the electronic doorbell generate heat during operation, causing the temperature inside the sealed cavity to rise. For temperature-sensitive electronic components, such as transistors and capacitors, elevated temperatures can lead to performance instability and even affect their lifespan. This embodiment achieves heat dissipation by incorporating a heat dissipation component to conduct heat from the sealed cavity to the housing, and then through the housing to the outside air.

[0082] This invention proposes another electronic doorbell, the electronic doorbell comprising:

[0083] Front shell 110;

[0084] The electronic control board 120 is equipped with a power supply point;

[0085] The antenna assembly is housed in the housing and connected to the feed point of the electronic control board;

[0086] A heat dissipation component is disposed in the housing near the electronic control board. The heat dissipation component has a gap for the antenna component to transmit signals.

[0087] In this embodiment, the control board 120 is equipped with multiple functional circuits, such as a radio frequency (RF) generation circuit, a power supply circuit, and a main control circuit. The input terminal of the RF generation circuit is connected to the main control circuit, and the output terminal of the RF generation circuit is connected to the antenna assembly through a feed point to feed power to the antenna assembly, enabling the antenna assembly to transmit and receive electromagnetic waves. The control board 120 can be fixed to the front housing 110, and the antenna assembly can be mounted on the control board 120; alternatively, the antenna assembly can be fixed to the front housing 110 by thermal fusion, and the control board 120 can be positioned above the antenna assembly and abut against it. Further, the control board 120 can be made of an aluminum substrate. The aluminum substrate is a metal-based copper-clad laminate with good heat dissipation function. Generally, a single-sided board consists of a three-layer structure: an insulating layer, a circuit layer, and a metal base layer. The functional circuits are electrically connected through the circuit layer on the aluminum substrate. At the same time, the heat generated by the functional circuits can also be conducted to the outside of the cavity through the aluminum substrate, achieving heat dissipation.

[0088] The heat dissipation assembly includes heat sinks, which may have slots. The number and location of these slots correspond to the antenna assembly. Alternatively, multiple heat sinks may be arranged around the periphery of the receiving cavity and spaced apart along the inner wall of the front housing 110, with the slots between adjacent heat sinks corresponding to the antenna assembly. Heat sinks are typically made of metal, which can interfere with the signal transmission of the antenna assembly. By providing slots in the heat dissipation assembly, the antenna assembly can transmit or receive signals through the slots, reducing the interference from the metal heat sinks.

[0089] The electronic doorbell also includes electronic components such as a camera, buttons, display screen, and speaker located on the front housing 110. These electronic components, along with the functional circuits on the control board 120, generate heat during operation, causing the temperature in the middle area of ​​the receiving cavity to rise. The control board 120 has numerous functional circuits, generating a significant amount of heat during operation, causing its temperature to rise rapidly. A heat dissipation component is positioned close to the control board 120, conducting the heat from the control board 120 to the periphery and then through the wall of the front housing 110 to the outside of the receiving cavity, thereby reducing the temperature inside the receiving cavity and achieving a heat dissipation effect.

[0090] This embodiment incorporates a gap on the heat dissipation assembly corresponding to the antenna assembly, allowing the received / transmitted signals of the antenna assembly to pass through the gap. This reduces interference from the heat dissipation assembly to the antenna assembly and improves the radiation performance of the antenna assembly in the electronic doorbell. It helps solve the interference problem caused by a one-piece heat dissipation assembly design. The gap design reduces the area of ​​the heat dissipation assembly, lowering costs, without compromising heat dissipation performance.

[0091] In one embodiment, the electronic doorbell further includes:

[0092] A cover plate 150 is formed by the cover plate 150 and the front shell 110 to form a first cavity, and the electronic control board 120, the antenna assembly and the heat dissipation assembly are housed in the first cavity.

[0093] The electronic control board 120 is disposed on the cover plate and abuts against the antenna assembly;

[0094] Alternatively, the electronic control board 120 may be disposed on the housing, and the antenna assembly may be mounted on the electronic control board 120.

[0095] In this embodiment, the cover plate 150 and the front shell 110 enclose a first cavity. By placing the electronic control board 120, the antenna assembly and the heat dissipation assembly in the first cavity, it can play a role in dustproofing and / or waterproofing, and reduce the impact of the external environment on the electronic control board 120, the antenna assembly and the heat dissipation assembly.

[0096] In one embodiment, the front housing 110 has a mounting portion on which the antenna assembly is mounted.

[0097] The mounting portion and the cover plate 150 enclose a second cavity located within the first cavity, and the antenna assembly is disposed within the second cavity.

[0098] In this embodiment, the mounting portion and the cover plate 150 enclose each other, forming a second cavity within the first cavity. The electronic control board 120 and the antenna assembly are disposed within the second cavity. In addition, electronic components such as the doorbell button, camera, and display screen are also disposed within the second cavity. This embodiment protects the electronic control board 120, antenna assembly, and electronic components such as the doorbell button, camera, and display screen through the double cavity formed by the mounting portion and the front shell 110 and the cover plate, effectively preventing dust particles and debris from entering and causing electrical interference. The heat dissipation assembly is disposed outside the second cavity and is connected to both the mounting portion and the front shell, respectively, to conduct heat from the second cavity to the first cavity, and then to the outside of the first cavity through the larger area of ​​the front shell 110. The heat dissipation assembly being disposed outside the first cavity also allows for spatial isolation from the antenna assembly through the mounting portion, thereby reducing its impact on the antenna assembly. In addition, the area outside the second cavity and inside the first cavity can also be used to install components such as mounting posts and limiting posts to fix them to the cover plate, avoiding the need to reserve additional positions for mounting posts and limiting posts in the mounting section, thus limiting the layout of the electronic control board 120, antenna assembly and electronic devices.

[0099] In this embodiment, a first seal is formed by the cover plate 150 and the front shell 110, and a second seal is formed by the cover plate 150 and the mounting part, achieving a double seal with good sealing effect. In addition, to ensure the aesthetic appearance of the electronic doorbell, the seal between the cover plate 150 and the mounting part can be strengthened, while a simple seal is sufficient between the cover plate 150 and the front shell 110.

[0100] In one embodiment, the electronic doorbell further includes:

[0101] A sealing ring 360 is fixed to the housing and surrounds the mounting portion.

[0102] The sealing ring 360 effectively prevents liquids such as water and moisture, or dust particles and other debris from entering the second cavity, thereby protecting the antenna assembly and electronic control board 120 from liquid damage and providing waterproof, moisture-proof and / or dustproof protection. The heat dissipation component is located outside the second cavity and is connected to the sealing ring 360 and the front shell 110 respectively, so as to conduct heat from the second cavity to the second cavity and then conduct it to the outside of the first cavity through the larger area of ​​the front shell 110.

[0103] This embodiment uses a 360° sealing ring to surround the mounting part, which provides waterproofing and moisture protection for the antenna assembly and other electronic components inside the mounting part. This prevents liquids, moisture, or dust particles from entering the antenna assembly or other electronic components and causing corrosion or short circuits, thereby extending their service life.

[0104] In one embodiment, a groove is formed between the mounting portion and the side of the front housing 110, and the heat dissipation assembly is disposed within the groove.

[0105] In this embodiment, the heat dissipation component is disposed within the groove formed between the mounting portion and the side of the front housing 110, and is in contact with both the sealing ring 360 and the front housing 110. This allows heat generated by the antenna assembly and other electronic components within the mounting portion during operation to be conducted from the mounting portion to the heat dissipation component, then through the heat dissipation component to the front housing 110 and the air, and finally through the larger area of ​​the front housing 110 to the air outside the front housing 110, achieving a heat dissipation effect. Furthermore, thermally conductive silicone can be filled between the sealing ring 360 and the heat dissipation component, and / or between the heat dissipation component and the front housing 110. Thermally conductive silicone effectively fills the gaps in the contact surfaces, squeezing out air. Air is a poor conductor of heat and severely hinders heat transfer between contact surfaces. The addition of thermally conductive silicone ensures sufficient contact between the heat dissipation component and the sealing ring 360 and the front housing 110, achieving minimal temperature difference and rapid heat dissipation.

[0106] The groove also features multiple positioning posts and multiple screw posts. The positioning posts are spaced apart on the groove corresponding to the positions of the heat dissipation components. The heat dissipation components also have multiple positioning holes 177 corresponding to the positions of the positioning posts. The positioning posts pass through the positioning holes 177 to fix the heat dissipation components to the groove, preventing displacement and affecting heat dissipation. The screw posts are arranged on the groove, avoiding the positions of the heat dissipation components, and are used for fixed connection with the cover plate 150. The screw posts can be placed in the gaps of the heat dissipation components, utilizing the space corresponding to the gaps in the front housing 110, without affecting the performance of the antenna components.

[0107] In this embodiment, the heat dissipation component is placed in a groove formed between the mounting part and the side of the front shell 110 to effectively conduct the heat generated by the antenna assembly and other electronic components in the mounting part during operation. Positioning posts can also be provided on the groove to fix the heat dissipation component, and screw posts can be provided to fix the front shell 110 to the cover plate 150. This eliminates the need to occupy space in the mounting part for screw posts, and the antenna assembly, doorbell button, camera, display screen, and other electronic components in the mounting part do not require any obstruction design, allowing for flexible placement of their positions.

[0108] In one embodiment, the heat dissipation component includes:

[0109] A first heat sink 141 is disposed outside the first cavity. The heat sink has gaps, the number and position of which correspond to the antenna assembly.

[0110] In this embodiment, the heat dissipation component can be a one-piece heat sink with gaps on the heat sink corresponding to the positions of the antenna components, allowing the signals from the antenna components to be transmitted through the gaps. The width of the gaps is not less than 1 mm. When there are multiple antenna components, the number of gaps is the same as the number of antenna components.

[0111] This embodiment allows the antenna component's signal to be transmitted through a gap on the heat sink corresponding to the antenna component's position, reducing the interference of the heat sink on the antenna component. The structure is simple, easy to implement, and does not affect the heat dissipation performance.

[0112] In one embodiment, the heat dissipation component includes:

[0113] The second heat sink 142 and the third heat sink 143 are disposed at a distance from each other outside the first cavity, and the gap formed between the second heat sink 142 and the third heat sink 143 corresponds to the antenna assembly.

[0114] In this embodiment, the heat dissipation assembly can be a second heat sink 142 and a third heat sink 143 designed separately. The gap formed between the second heat sink 142 and the third heat sink 143 corresponds to the antenna assembly, allowing the antenna assembly signal to be transmitted through the gap. The distance between the second heat sink 142 and the third heat sink 143 is not less than 1 mm. Furthermore, the second heat sink 142 and the third heat sink 143 may also have gaps, allowing the antenna signal to be transmitted through the gaps in the heat sinks.

[0115] In this embodiment, the second heat sink 142 and the third heat sink 143, which are designed separately, form a gap at the position of the corresponding antenna component, so that the signal of the antenna component can be transmitted through the gap, reducing the interference of the heat sink to the antenna component. The structure is simple, easy to implement, and does not affect the heat dissipation performance.

[0116] In one embodiment, the gap on the first heat sink 141 and the distance between the second heat sink 142 and the third heat sink 143 are greater than 1 mm.

[0117] In this embodiment, the gap on the first heat sink 141 and the spacing between the second heat sink 142 and the third heat sink 143 are designed to allow the antenna assembly's signal to transmit. If the gap is too small, the antenna assembly's signal cannot be transmitted smoothly. In this embodiment, the gap on the first heat sink 141 and the spacing between the second heat sink 142 and the third heat sink 143 are set to be greater than 1mm to ensure smooth signal transmission of the antenna assembly. It is understood that the larger the gap on the first heat sink 141 or the spacing between the second heat sink 142 and the third heat sink 143, the less interference the heat sink will cause to the antenna assembly. However, since the area of ​​the heat sink is related to its heat dissipation performance, a certain area is required for the heat sink to achieve good heat dissipation performance. The gap on the first heat sink 141 or the spacing between the second heat sink 142 and the third heat sink 143 can be adjusted according to actual needs to achieve good signal transmission while ensuring that the heat sink has the area required to achieve its heat dissipation performance.

[0118] In one embodiment, there are multiple second heat sinks 142 and multiple third heat sinks 143;

[0119] A plurality of second heat sinks 142 are arranged at intervals along a first direction on the side of the front shell 110 outside the first cavity, and a plurality of third heat sinks 143 are arranged at intervals along a second direction on the side of the front shell 110 outside the first cavity; wherein the first direction and the second direction are opposite.

[0120] In this embodiment, when there is only one antenna assembly, multiple second heat sinks 142 and multiple third heat sinks 143 are respectively disposed on both sides of the antenna assembly, so that the gaps formed between the multiple second heat sinks 142 and the gaps formed between the multiple third heat sinks 143 can also transmit the signal of the antenna assembly, thereby improving the radiation performance of the antenna assembly in the electronic doorbell. When there are multiple antenna assemblies, the gaps formed between the multiple second heat sinks 142 or the gaps formed between the multiple third heat sinks 143 correspond to the multiple antenna assemblies.

[0121] In one embodiment, the heat dissipation assembly further includes a fourth heat sink 144;

[0122] The fourth heat sink 144 is disposed outside the first cavity and away from the antenna assembly.

[0123] In this embodiment, the fourth heat sink 144 can be disposed opposite to the first heat sink 141. For smaller antenna components, such as the second antenna 132, signals can be transmitted by forming gaps on or between multiple heat sinks. For larger antenna components, such as the first antenna 131, the width of the gaps formed on or between multiple heat sinks is limited, making it impossible to effectively transmit signals. In this case, by displacing the heat sink away from the antenna component, for example, referring to... Figure 5 Since the radiating surface of the first antenna 131 is located on the left side, the fourth heat sink 144 is located on the right side, ensuring that the signal transmission of the first antenna 131 is not blocked by the fourth heat sink 144. Compared to a typical one-piece design where one side of the recess is completely covered by a heat sink, the area of ​​the fourth heat sink 144 is halved, reducing costs, minimizing the impact on the performance of the antenna assembly, and without affecting heat dissipation performance.

[0124] In one embodiment, the first heat sink 141, the second heat sink 142, the third heat sink 143 and the fourth heat sink 144 are curved to fit the front shell 110.

[0125] In this embodiment, the first heat sink 141, the second heat sink 142, the third heat sink 143 and the fourth heat sink 144 are designed as curved structures, which can increase the area of ​​the heat sink and fully fit with the front shell 110, so that the heat sink and the front shell 110 can make face-to-face contact, further improving the heat dissipation efficiency.

[0126] In one embodiment, the antenna assembly includes a first antenna 131;

[0127] The first antenna 131 is positioned away from the fourth heat sink.

[0128] The first antenna 131 is used for long-distance communication with the mobile terminal.

[0129] In this embodiment, the first antenna 131 can be a LoRa antenna or a Zigbee antenna. Bluetooth antennas or WiFi antennas used for short-range communication are typically large in size, and their radiating surfaces are also large. Even by creating gaps between the heat sinks, most of the radiating surface of the first antenna 131 will still be blocked, preventing effective signal transmission through the gaps. Therefore, in this embodiment, the first antenna 131 is positioned away from the fourth heat sink to ensure that the radiating surface of the first antenna 131 is not blocked by metal, thereby allowing electromagnetic waves to be successfully transmitted / received.

[0130] In one embodiment, the antenna assembly includes a second antenna 132;

[0131] The second antenna 132 is positioned close to the gap formed between the second heat sink 142 and the third heat sink 143 to transmit signals through the gap;

[0132] The second antenna 132 is used for close-range communication with the mobile terminal.

[0133] In this embodiment, the second antenna 132 can be a Bluetooth antenna or a WiFi antenna. Bluetooth antennas or WiFi antennas used for short-range communication are typically small in size, and their radiating surface is also small. In this embodiment, a gap is formed between the second heat sink 142 and the third heat sink 143 to ensure that the radiating surface of the second antenna 132 is not blocked by metal, so that electromagnetic waves can be successfully transmitted / received through the gap between the second heat sink 142 and the third heat sink 143.

[0134] The present invention also provides an antenna suitable for a first antenna 131, a second antenna 132, and a third antenna, the antenna comprising:

[0135] First Radiation Section 171;

[0136] The power supply section 173 and the ground supply section 174 are electrically connected to the first radiating section 171 and are arranged at an angle to the first radiating section 171.

[0137] In this embodiment, the electronic doorbell also includes an electronic control board 120, a front shell 110, and a cover plate 150. The cover plate 150 and the front shell 110 enclose a cavity for accommodating the antenna and the electronic control board 120. The antenna can be thermally fixed to the front shell 110 via the first radiating part 171, and the electronic control board 120 is disposed on the cover plate 150 or the front shell 110. When the cover plate 150 and the front shell 110 are enclosed, the electronic control board 120 abuts against the feed part 173 and the ground part 174, forming a certain pressure between the electronic control board 120 and the feed part 173 and the ground part 174, making the electrical contact between the antenna and the electronic control board 120 more stable and avoiding frequency deviation. Alternatively, the antenna can be welded to the electronic control board 120 via the feed part 173 and the ground part 174, making it less likely for the antenna and the electronic control board 120 to shift.

[0138] The antenna of this invention can be any one of a LoRa antenna, Bluetooth antenna, WiFi antenna, and Zigbee antenna. All of the above antennas are compatible with the structure of this invention. For antennas of different types and frequency bands, the corresponding performance can be achieved by adjusting the shape of the first radiating part 171. The electronic doorbell communicates with a mobile terminal through the antenna of this invention, receiving control signals from the mobile terminal or sending data signals to the mobile terminal. For example, when a user performs an unlocking operation on the mobile terminal, the mobile terminal sends an unlocking control signal to the antenna of the electronic doorbell. The antenna converts the received unlocking signal into a corresponding electrical signal and sends it to the electronic control board 120, which then controls the corresponding functional circuit to open the door lock. When someone rings the doorbell, the electronic control board 120 outputs a corresponding electrical signal to the antenna, which converts the received electrical signal into a corresponding visitor signal and sends it to the mobile terminal, allowing the user to receive knocking information on the mobile terminal.

[0139] The power supply section 173 and the ground supply section 174 are electrically connected to the power supply point and ground point on the control board 120, respectively, and the first radiating section 171 is arranged parallel to the control board 120. When transmitting a signal, the control board 120 inputs a modulated high-frequency oscillating current to the antenna, generating an electric field and a magnetic field in the space around the first radiating section 171, converting the high-frequency oscillating current into radio waves (free electromagnetic waves) and radiating them into the surrounding space. When receiving a signal, after the electromagnetic waves are radiated from the transmitting antenna, they propagate in all directions. Under the action of the electromagnetic waves, the first radiating section 171 generates an induced electromotive force, converting the radio waves into a high-frequency oscillating current and outputting it to the control board 120.

[0140] The feed section 173 and ground section 174 are arranged at an angle to the first radiating section 171. The distance between the first radiating section 171 and the control board 120 is related to the lengths of the feed section 173 and ground section 174. When the control board 120 is mounted on the front housing, its side can be fixed to the side wall of the front housing 110. By adjusting the height of the control board 120 on the side wall of the front housing 110, the distance between the control board 120 and the first radiating section 171 can be adjusted. When the distance between the control board 120 and the first radiating section 171 increases, the lengths of the feed section 173 and ground section 174 are correspondingly increased, i.e., the antenna height increases. The antenna height can be adjusted by changing the lengths of the feed section 173 and ground section 174 or their angle with the first radiating section 171 according to the needs of different products, thereby achieving better antenna performance. The first radiating part 171, the power feeding part 173 and the ground feeding part 174 can be integrally formed, which shortens the prototyping cycle, saves debugging time and cost, and facilitates mass production on the production line; or they can be formed by connecting multiple conductive components.

[0141] This invention, by arranging the power feed section and ground feed section at an angle to the first radiating section, does not occupy planar space, reducing the antenna's footprint and thus its size. This makes the antenna more flexible in installation within limited spaces, broadening its applicability. Besides electronic doorbells, it can be applied to other space-constrained products. Furthermore, by adjusting the lengths of the power feed section and ground feed section, the antenna height can be adjusted. This facilitates designs with a greater distance between the first radiating section and the control board, thereby improving antenna performance. This invention can be applied to various antenna and control board height designs.

[0142] In one embodiment, the antenna further includes:

[0143] The second radiating part 172 is connected to the first radiating part 171, and the second radiating part 172 and the first radiating part 171 are arranged at an angle.

[0144] Generally, the greater the antenna's height and radiating area, the better its performance. Therefore, in practical applications, the antenna height is usually set as high as possible. The first radiating part 171 and the second radiating part 172 together constitute the antenna's radiating area. Adjusting the length of the second radiating part 172 will change the antenna's radiating area. The change in radiating area caused by the change in the height of the second radiating part 172 can be compensated for by adaptively adjusting the planar area of ​​the first radiating part 171, so that the antenna's radiating area meets the performance requirements.

[0145] For example, increasing the length of the second radiating part 172 increases the antenna's radiating area. In this case, the planar area of ​​the first radiating part 171 can be reduced to maintain the antenna's radiating area unchanged. Conversely, decreasing the length of the second radiating part 172 reduces the antenna's radiating area. In this case, the planar area of ​​the first radiating part 171 can be increased to maintain the antenna's radiating area unchanged. Furthermore, the shape of the first radiating part 171 can be adjusted according to the actual application to achieve the desired resonant point and radiation efficiency. For example, opening gaps in the first radiating part 171 or setting the first radiating part 171 in a stepped shape can change the current distribution along the first radiating part 171, thereby altering the electromagnetic field of the first radiating part and thus adjusting the resonant point and radiation efficiency.

[0146] When setting the antenna height as high as possible within the limited internal space of the product, the planar area of ​​the first radiating part 171 can be reduced accordingly, ensuring antenna performance while reducing the area occupied by the antenna.

[0147] This embodiment sets the second radiating part 172 at an angle to the first radiating part 171. This angled arrangement of the second radiating part 172 and the first radiating part 171 does not occupy planar space, reducing the antenna's footprint and thus its size. This makes the antenna more flexible in installation within limited spaces, broadening its applicability. Besides electronic doorbells, it can be applied to other products with limited space. By setting the second radiating part 172 at an angle to the first radiating part 171, the antenna height can be adjusted by changing the length of the second radiating part. This facilitates a larger distance between the first radiating part and the control board 120, thereby improving antenna performance. This invention can be applied to various antenna and control board 120 height designs.

[0148] The first radiating part 171, the second radiating part 172, the power feeding part 173 and the ground feeding part 174 are integrally formed.

[0149] In this embodiment, the first radiating part 171, the second radiating part 172, the power supply part 173, and the grounding part 174 are integrally formed, resulting in a short prototyping cycle, saving debugging time and costs, and facilitating mass production on the production line. Furthermore, the first radiating part 171, the second radiating part 172, the power supply part 173, and the grounding part 174 can be integrally formed from a single steel sheet. Compared to other metals, steel sheets are easy to form, readily available, low in cost, and the manufacturing process is simple when integrally formed.

[0150] In one embodiment, the power supply portion 173 and / or the ground supply portion 174 extend from the end of the second radiating portion 172 in a direction parallel to the first radiating portion 171.

[0151] In this embodiment, the power supply section 173 and / or the ground supply section 174 extend from the end of the second radiating section 172 in a direction parallel to the first radiating section 171, forming an angle with the second radiating section 172, but not perpendicular to the second radiating section 172. If the power supply section 173 and / or the ground supply section 174 were perpendicular to the second radiating section, the power supply section 173 and / or the ground supply section 174 would be in face-to-face contact with the control board. Since the power supply section 173 and / or the ground supply section 174 and the control board are both hard objects, gaps may exist in the face-to-face contact, leading to unstable electrical contact and thus unstable signal transmission. In this embodiment, the power supply section 173 and / or the ground supply section 174 is configured not to be perpendicular to the second radiating section 172. Thus, the power supply section 173 and / or the ground supply section 174 only needs to be electrically connected to the power supply point and / or the ground supply point on the control board 120 through a portion extending outward. Furthermore, one end of the feed section 173 and / or the ground section 174 extending outward can be bent into a plane parallel to the first radiating section, and welded to the control board 120 through this plane to achieve a stable face-to-face electrical connection; or a protrusion can be provided on one end of the feed section 173 and / or the ground section 174 extending outward, and a point-to-surface electrical connection can be achieved through this protrusion with the control board 120. In addition, the antenna height can be finely adjusted by adjusting the length of the feed section 173 and the ground section 174 or the angle between them and the second radiating section 172.

[0152] The power supply section 173 and / or the ground supply section 174 are provided with a bent portion in the direction toward the first radiation section 171.

[0153] In this embodiment, the power supply section 173 and / or the ground supply section 174 form a protrusion facing the electronic control board 120 by providing a bent portion in the direction toward the first radiation section 171, and abut against the electronic control board 120 through the protrusion. Furthermore, the bent portion can be a curved surface or a flat surface to make the contact with the electronic control board 120 smoother.

[0154] In one embodiment, the bent portion is provided with metal protrusions 175.

[0155] In this embodiment, a metal protrusion 175 is provided on the side of the bent portion facing the electronic control board 120 to achieve point-to-surface electrical contact with the electronic control board 120. It is understood that the contact surfaces of the electronic control board 120 and the bent portion are both made of hard metal. The surface-to-surface contact between hard metals cannot be completely fitted together, and gaps will always exist, causing unstable electrical contact between the antenna and the electronic control board 120, and generating unnecessary energy loss when conducting electrical signals.

[0156] In this embodiment, by providing metal protrusions 175 at the bending portion, a more stable point-to-surface electrical contact is achieved with the electronic control board 120, thereby improving the consistency of the antenna.

[0157] In one embodiment, the power supply section 173 and / or the ground supply section 174 are elastic elements.

[0158] In this embodiment, since there is an angle between the power supply section 173 and the ground supply section 174 and the second radiating section 172, and the angle is not 90°, the power supply section 173 and / or the ground supply section 174 are configured as elastic members, so that there is a space for movement between the power supply section 173 and the ground supply section 174 and the second radiating section 172. When the power supply section 173 and / or the ground supply section 174 comes into contact with the control board 120, it is displaced downward by a certain angle under the pressure of the control board 120. At the same time, due to its own elasticity, it also generates a reaction force on the control board 120, so that there is a certain static friction between the power supply section 173 and / or the ground supply section 174 and the control board 120, which makes it difficult to displace and the contact is more stable. The front-to-back distance and height of the power supply section 173 and / or the ground supply section 174 can be adjusted according to actual needs to achieve the required elasticity.

[0159] In one embodiment, the first radiating part 171 and the second radiating part 172 are arranged at a 90° angle.

[0160] In this embodiment, when the control board 120 comes into contact with the feed section 173 and / or the ground section 174, the feed section 173 and / or the ground section 174 are displaced, causing the feed section 173 and / or the ground section 174 to exert pressure on the second radiating section 172. Since the feed section 173 and / or the ground section 174 has a non-90° angle with the second radiating section 172, the pressure F exerted by the feed section 173 and / or the ground section 174 on the second radiating section 172 can be decomposed into a vertical component F1 and a horizontal component F2, wherein the horizontal component is parallel to the first radiating section 171. If the first radiating section 171 and the second radiating section 172 are not set at a 90° angle, they will be displaced closer to the first radiating section under the action of the vertical component F1, thereby reducing the antenna height. Furthermore, the height of the second radiating section 172 is not less than 6mm. If the height of the second radiating section is too low, it will affect the antenna's radiation performance. In practical applications, the area of ​​the first radiating part can be adjusted to make the height of the second radiating part 172 higher.

[0161] In this embodiment, by vertically arranging the first radiating part 171 and the second radiating part 172, the vertical component F1 of the feed part 173 and / or ground part 174 on the second radiating part 172 can be canceled, preventing the second radiating part 172 from shifting in the vertical direction and ensuring stable antenna performance. Simultaneously, by vertically arranging the first radiating part 171 and the second radiating part 172, the height change of the second radiating part 172 is the same as the antenna height change, facilitating more direct adjustment of the antenna height.

[0162] In one embodiment, the antenna further includes:

[0163] The fixing part 176 is disposed on both sides of the second radiating part 172 and is disposed at an angle to the first radiating part 171 and the second radiating part 172. The fixing part 176 is used to fix the antenna to the object to be installed.

[0164] The pressure exerted by the feed section 173 and / or the ground section 174 on the second radiating section 172 will generate a horizontal component, causing the second radiating section 172 to displace in the horizontal direction, thereby resulting in displacement of the contact points of the feed section 173 and / or the ground section 174. In this embodiment, fixing sections 176 are provided on both sides of the second radiating section 172 at an angle to both the first and second radiating sections 171 and 172, thus fixing the horizontal position of the second radiating section 172 and preventing displacement from affecting the electrical contact between the antenna and the control board 120. The angle between the fixing section 176 and the first and second radiating sections 171 can be 60°, 90°, or 120°, and is not limited here. Specifically, the fixing section 176 can be a solid plane with a limiting hole, through which a positioning post on the mounted object passes to fix its position; or, the fixing section 176 can be L-shaped, such as... Figure 1 As shown, one end of the fixing part 176 is bent at a 90° angle, and a positioning hole 177 is provided on the bent portion. A positioning post on the object being mounted passes through the positioning hole 177 to fix its position. The fixing part 176 can be bent towards the power supply part 173 and / or the ground supply part 174, or it can be bent away from the power supply part 173 and / or the ground supply part 174. The bent end of the fixing part 176 can be the end near the power supply part 173 and / or the ground supply part 174, or the end near the first radiating part 171. The fixing part 176 can be integrally formed with the first radiating part 171, the second radiating part 172, the power supply part 173, and the ground supply part 174, or it can be separately fixed to the second radiating part 172.

[0165] The present invention also provides an antenna assembly, the antenna assembly comprising:

[0166] The aforementioned antenna;

[0167] Antenna bracket, wherein positioning posts are provided on the antenna bracket;

[0168] The antenna fixing part is provided with a positioning hole 177, and the positioning post passes through the positioning hole 177 on the antenna fixing part.

[0169] In this embodiment, the antenna support includes a flat base so that the second radiating part 172 of the antenna can fit against it, thereby fixing and supporting the antenna. Positioning posts are located on the surface of the base corresponding to the positioning holes 177 of the antenna, and there are multiple positioning posts.

[0170] The detailed structure of the antenna assembly can be referred to in the above embodiments, and will not be repeated here. It is understood that since the above-mentioned antenna is used in the antenna assembly of the present invention, the embodiments of the antenna assembly of the present invention include all the technical solutions of all the above-mentioned antenna embodiments, and the technical effects achieved are exactly the same, and will not be repeated here.

[0171] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An electronic doorbell, characterized in that, The electronic doorbell comprises: a carrier; a first antenna fixed to the carrier; a second antenna spaced apart from the first antenna on the carrier to achieve spatial isolation, the communication distance of the second antenna being less than that of the first antenna; the electronic doorbell further comprises a front shell, a cover plate and an electronic control board; the cover plate and the front shell form a closed cavity, the first antenna, the second antenna and the electronic control board are arranged in the closed cavity, the first antenna and the second antenna are arranged on both sides of the central axis of the cover plate, and the distance between each point on the metal door plate of the cover plate and the first antenna and the second antenna is axisymmetric or centrosymmetric; the carrier is the front shell or the electronic control board; the first antenna and the second antenna are arranged on the front shell, or the first antenna and the second antenna are arranged on the electronic control board, or the first antenna and the second antenna are arranged on the front shell and the electronic control board respectively; the electronic doorbell further comprises a heat dissipation assembly, the heat dissipation assembly is arranged close to the front shell at the position close to the electronic control board, the heat dissipation assembly is provided with a gap, the gap is used for signal transmission of the first antenna and the second antenna, and the signal is the received / transmitted signal of the first antenna and the second antenna; the cover plate and the front shell form a first cavity, and the electronic control board, the first antenna, the second antenna and the heat dissipation assembly are arranged in the first cavity; the front shell has a mounting portion, and the first antenna and the second antenna are mounted on the mounting portion; the mounting portion and the cover plate form a second cavity in the first cavity, the heat dissipation assembly is arranged outside the second cavity, the position of the gap corresponds to the first antenna and the second antenna, and the first antenna and the second antenna are arranged in the second cavity.

2. The electronic doorbell of claim 1, wherein, The minimum distance between the first antenna and the second antenna is not less than 20 mm.

3. The electronic doorbell of claim 1, wherein, The first antenna is a LoRa antenna, and the second antenna is a Bluetooth or Wifi antenna.

4. The electronic doorbell of claim 1, wherein, The electronic doorbell further comprises a doorbell button; the doorbell button is arranged on the front shell, and the first antenna and the second antenna are arranged on both sides of the doorbell button.

5. The electronic doorbell of claim 1, wherein, The electronic doorbell further comprises a third antenna; The minimum distance between the third antenna and the first antenna and the second antenna is not less than 20 mm.

6. The electronic doorbell of claim 5, wherein, The third antenna is one of a Bluetooth, Wifi antenna and LoRa antenna.

7. The electronic doorbell of claim 5, wherein, The electronic control board is arranged on the cover plate and abuts against the first antenna, the second antenna and the third antenna; or the electronic control board is arranged on the front shell, and the first antenna, the second antenna and the third antenna are mounted on the electronic control board.

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