Smartphone external display device

Abstract

The utility model discloses an external screen device for a smart phone, which includes a main body, on which a data line is connected to realize data signal transmission with a smart phone, and a first connection interface for powering the external screen, a second connection interface for connecting an external power source to power the external screen and the smart phone, and a third connection interface for connecting a microphone. The external screen device is magnetically fixed to the back of the smart phone, and can transmit data signals with the smart phone through the first connection interface and the data line, and can receive data signals from the smart phone in real time, so as to display the real-time picture of the smart phone live broadcast or photo taking with zero delay, so as to make the live broadcast or photo taking effect better; at the same time, the smart phone is powered by the second connection interface to ensure the normal operation of the product, and the live broadcast voice interaction is more convenient through the third connection interface, and it is also convenient for recording operation. The external screen device has a simple structure and various functions, and provides convenient conditions for users to live broadcast and take photos.

Description

Technical Field

[0001] The utility model relates to the field of mobile phone peripherals, in particular to an external screen device for a smart phone. Background Art

[0002] With the rapid development of science and technology, smartphones have become a must-have multi-purpose tool for everyone. The portability advantage of mobile phones has gradually replaced some electronic products, such as cameras. In particular, live broadcast and VLOG users have a strong demand for smartphones when live streaming and taking photos. They also have high requirements for their expressions, postures, composition, angles, and film quality when live streaming and taking photos. They often need to adjust themselves in real time through the lens image on the smartphone screen. However, the front cameras of conventional smartphones generally have low pixels and low shooting quality, which cannot meet the shooting needs of users.

[0003] To solve this problem, external screens for smartphones are now available on the market, but these external screens mainly display the smartphone screen content on the external screen via WiFi transmission. This method has the following main problems:

[0004] First, it occupies the mobile phone’s WiFi connection: WiFi transmission will occupy the mobile phone’s WiFi connection, causing other applications that require network connection to be unable to be used normally.

[0005] Second, high data transmission delay: WiFi transmission is easily affected by the network environment and has a high transmission delay, which cannot meet the high requirements of live broadcast and VLOG users for real-time and synchronization.

[0006] Third, lack of wireless microphone interface: Existing products usually do not support external wireless microphones, limiting users’ audio input options when recording and live streaming.

[0007] Therefore, the existing external screen should be improved to solve the above problems. Utility Model Content

[0008] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an external screen device for a smart phone, which is designed for a smart phone and has a first connection interface capable of transmitting data signals in real time, a second connection interface capable of charging, and a third connection interface capable of connecting a microphone. Thus, the external screen device can display the content of the smart phone screen in real time, and can also perform charging, microphone voice interaction, and recording operations, providing convenient conditions for users to live broadcast and take pictures.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A smart phone external screen device comprises a main body, the main body is provided with a first connection interface which can be connected to a data cable to realize data signal transmission with the smart phone and supply power to the external screen device, a second connection interface for connecting an external power source to supply power to the external screen device and the smart phone, and a third connection interface for connecting a microphone.

[0011] As a preferred solution: the main body is provided with a magnet for magnetically fixing the external screen device to the back of the smartphone.

[0012] As a preferred solution: the first connection interface is a Type-C or Lightning interface; the second connection interface is a Type-C interface; the third connection interface is a Type-C interface or a 3.5mm audio interface.

[0013] As a preferred solution: the third connection interface is a Type-C interface that can be connected to a wireless microphone receiving end.

[0014] As a preferred solution: the first connection interface and the second connection interface are both arranged at the lower end of the body, and the third connection interface is arranged at the side of the body.

[0015] As a preferred solution: an annular groove is provided on the back of the main body, and the magnets are distributed in the annular groove in an annular shape; and a soft rubber thin pad is covered on the outer side of the annular groove.

[0016] As a preferred solution: a vertical groove is further provided on the back of the main body below the annular groove, and a magnet is also embedded in the vertical groove.

[0017] As a preferred solution: the main body includes a shell, a circuit board and a screen, the circuit board is installed in the shell, the screen covers one side of the shell and is located above the circuit board; the first connection interface, the second connection interface and the third connection interface are all electrically connected to the circuit board.

[0018] As a preferred solution: a switch button for controlling the opening and closing of an external screen device is also provided at the lower end of the main body, and the switch button is electrically connected to the circuit board.

[0019] As a preferred solution: the length of the main body is smaller than the length of the smartphone, and when the main body is attached to the back of the smartphone, the rear camera of the smartphone is not blocked by the main body.

[0020] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that by designing an external screen device for a smart phone, the external screen device has a first connection interface that can transmit data signals to the smart phone through a data cable, a second connection interface that can be charged, and a third connection interface that can be connected to a microphone. The external screen device and the smart phone are connected by wire through the data cable and the first connection interface. Compared with the traditional WiFi transmission method, the wired transmission method has strong anti-interference ability and stable signal transmission, so that the external screen device can receive the data signal of the smart phone in real time, and can display the real-time screen image of the smart phone live broadcast or photo with low latency and high stability, so that the live broadcast or photo effect is better; at the same time, the second connection interface can be connected to a charging power supply to power the smart phone and the external screen device, ensuring the normal operation of the smart phone and the external screen device; in addition, the third connection interface can be connected to a wireless microphone receiving end, providing high-quality audio input options, making the user's live voice interaction and recording more convenient, and meeting the high requirements of live broadcast and VLOG users for audio input. The external screen device forms a detachable fit with the back of the smartphone through magnets, and there is no need to set up a separate bracket structure for the external screen device, which improves the portability of the product, makes the product more convenient to use, and provides a better experience.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the external screen device of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the external screen device of the present invention from another viewing angle;

[0024] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the external screen device of the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the external screen device of the present invention in use state.

[0026] Description of the accompanying drawings:

[0027] 10. Main body; 11. First connection interface; 12. Second connection interface; 13. Third connection interface; 14. Shell; 141. Magnet; 142. Annular groove; 143. Soft rubber pad; 144. Vertical groove; 15. Circuit board; 16. Screen; 17. Switch button; 20. Wireless microphone receiving end; 30. Data cable; 40. Smart phone. DETAILED DESCRIPTION

[0028] The utility model Figures 1 to 4 As shown, a smart phone 40 external screen device includes a body 10, wherein:

[0029] The main body 10 is provided with a first connection interface 11 that can be connected to a data cable 30 to realize data signal transmission with a smart phone 40 and supply power to an external screen device, a second connection interface 12 for connecting an external power source to supply power to the external screen device and the smart phone 40, and a third connection interface 13 for connecting a microphone.

[0030] The first connection interface 11 is a Type-C or Lightning interface; the second connection interface 12 is a Type-C interface; the third connection interface 13 is a Type-C interface or a 3.5mm audio interface (applicable to smartphones with a 3.5mm audio interface). In this embodiment, the third connection interface 13 adopts a Type-C interface, and a wireless microphone receiving terminal 20 can be connected to the third connection interface 13. The user can perform voice operations through the microphone receiving terminal to improve the audio input quality. The first connection interface 11 and the second connection interface 12 are both arranged at the lower end of the body 10, and the third connection interface 13 is arranged at the side of the body 10 (in this embodiment, it is arranged on the right side, and it can also be arranged on the left side or the top as needed). The first connection interface 11, the second connection interface 12 and the third connection interface 13 are arranged at the lower end and the side of the body 10, which can avoid the increase in the width of the body 10 due to the centralized arrangement at the lower end of the body 10, thereby making the external screen device compact as a whole, and its width can adapt to the width of the smartphone screen.

[0031] The main body 10 is of a light and thin design, and includes a shell 14, a circuit board 15 and a screen 16. The circuit board 15 is installed in the shell 14, and the screen 16 covers one side of the shell 14 and is located above the circuit board 15; the first connection interface 11, the second connection interface 12 and the third connection interface 13 are all electrically connected to the circuit board 15; the circuit board 15 is integrated with a processor and other electronic components to control the first connection interface 11, the second connection interface 12 and the third connection interface 13 to send and receive signals and supply power. A switch button 17 for controlling the opening and closing of an external screen device is also provided at the lower end of the main body 10. The switch button 17 is electrically connected to the circuit board 15. The user can not only turn on and off the external screen device through the switch button 17, but also switch the connection and disconnection between the external screen device and the smart phone 40 through the switch button 17.

[0032] The main body 10 is also provided with a magnet 141 for firmly magnetically fixing the external screen device to the back of the smartphone 40 to ensure the stability and convenience of the product during use. In this embodiment, an annular groove 142 is provided on the back of the main body 10, and the magnet 141 is a plurality of block magnets 141, which are distributed in an annular shape in the annular groove 142, and a soft rubber pad 143 is covered on the outside of the annular groove 142. The soft rubber pad 143 is used to prevent the magnet 141 from detaching from the annular groove 142 on the one hand, and to make the back of the external screen fit softly with the back of the smartphone 40 on the other hand to avoid wear. A vertical groove 144 is also provided below the annular groove 142 on the back of the main body 10, and a magnet 141 is also embedded in the vertical groove 144. The vertically distributed magnets 141 are combined with the annularly distributed magnets 141 to increase the magnetic contact area and region between the main body 10 and the back of the smartphone 40, thereby improving the stability of the combination between the external screen device and the smartphone 40.

[0033] The length of the main body 10 is smaller than that of the smartphone 40 (with the length of common smartphones on the market as a reference). When the main body 10 is attached to the back of the smartphone 40, the rear camera of the smartphone 40 will not be blocked by the main body 10, so as to ensure smooth operation of the smartphone 40 in application scenarios such as live broadcasting and taking pictures that require the use of the rear camera.

[0034] The external screen device transmits the content on the smartphone screen to the external screen device in real time by wired mode through Type-C or Lightning interface, and the external screen device can be detachably attached to the back of the smartphone through magnetic design. This design solves the high latency and WiFi occupation problems caused by existing products transmitted through WiFi, and adds a wireless microphone interface to further optimize the user experience and meet the needs of live broadcast and VLOG users for high performance and convenience.

[0035] The usage method and working principle of the external screen device are as follows: when in use, the external screen device is fixed to the back of the smartphone 40 by magnetic attraction, and the first connection interface 11 of the external screen device is connected to the data interface of the smartphone 40 through the data cable 30; when the user broadcasts live or takes photos through the rear camera of the smartphone 40, the data signal of the smartphone 40 is transmitted to the external screen through the data cable 30, and the external screen can display the live broadcast or photo image in real time; the external screen device obtains power from the smartphone through the first connection interface 11 and the data cable 30, and the second connection interface 12 can be connected to a charging power source, such as a power bank, to power the smartphone 40 and the external screen device, providing power support for the equipment for long-term use; ensuring the long-term normal operation of the smartphone 40 and the external screen device.

[0036] When the second connection interface 12 is connected to the charging power supply to power the smart phone 40 and the external screen device, the following two power supply methods can be used. The first method is that the charging power supply supplies power to the external power supply device and the smart phone at the same time. Specifically, the current first reaches the external screen device, and then distributes part of the electric energy to the smart phone through the data line and the first connection interface, so as to realize synchronous power supply of the external screen device and the smart phone; the second method is that the charging power supply current enters the external screen device through the second connection interface 12, and then enters the smart phone through the first connection interface and the data line, and the smart phone distributes power to the external screen device through the data line and the first connection interface; the specific power supply form can be designed according to the actual situation, and the specific power supply circuit is a mature technology, which will not be described here. In addition, the wireless microphone receiving terminal 20 can be connected to the third connection interface 13, and the user can perform live voice signal interactive operations through the wireless microphone receiving terminal 20.

[0037] The design focus of the utility model is that, by designing an external screen device for a smart phone, the external screen device has a first connection interface that can transmit data signals to the smart phone through a data cable, a second connection interface that can be charged, and a third connection interface that can be connected to a microphone. The external screen device and the smart phone are connected by wire through the data cable and the first connection interface. Compared with the traditional WiFi transmission method, the wired transmission method has strong anti-interference ability and stable signal transmission, so that the external screen device can receive the data signal of the smart phone in real time, and can display the real-time screen image of the smart phone live broadcast or photo taking with low latency and high stability, so that the live broadcast or photo taking effect is better; at the same time, the second connection interface can be connected to a charging power supply to power the smart phone and the external screen device, ensuring the normal operation of the smart phone and the external screen device; in addition, the third connection interface can be connected to a wireless microphone receiving end, providing high-quality audio input options, making the user's live voice interaction and recording more convenient, and meeting the high requirements of live broadcast and VLOG users for audio input. The external screen device forms a detachable fit with the back of the smart phone through a magnet, and there is no need to set a separate bracket structure for the external screen device, which improves the portability of the product, makes the product more convenient to use, and has a better experience.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A smart phone external screen device, characterized in that: The invention comprises a main body, which is provided with a first connection interface which can be connected to a data cable to realize data signal transmission with a smart phone and supply power to an external screen device, a second connection interface for connecting an external power source to supply power to the external screen device and the smart phone, and a third connection interface for connecting a microphone.

2. The smart phone external screen device according to claim 1, characterized in that: The main body is provided with a magnet for magnetically fixing the external screen device to the back of the smart phone.

3. The smart phone external screen device according to claim 1, characterized in that: The first connection interface is a Type-C or Lightning interface; the second connection interface is a Type-C interface; the third connection interface is a Type-C interface or a 3.5mm audio interface.

4. The smart phone external screen device according to claim 1, characterized in that: The third connection interface is a Type-C interface that can be connected to a wireless microphone receiving end.

5. The smart phone external screen device according to claim 1, characterized in that: The first connection interface and the second connection interface are both arranged at the lower end of the body, and the third connection interface is arranged at the side of the body.

6. The smart phone external screen device according to claim 2, characterized in that: An annular groove is arranged on the back of the main body, and the magnets are distributed in the annular groove in an annular shape; and a soft rubber pad is covered on the outer side of the annular groove.

7. The smart phone external screen device according to claim 6, characterized in that: A vertical groove is also arranged on the back of the main body below the annular groove, and a magnet is also embedded in the vertical groove.

8. The smart phone external screen device according to claim 1, characterized in that: The main body includes a shell, a circuit board and a screen. The circuit board is installed in the shell. The screen covers one side of the shell and is located above the circuit board. The first connection interface, the second connection interface and the third connection interface are all electrically connected to the circuit board.

9. The smart phone external screen device according to claim 8, characterized in that: A switch button for controlling the opening and closing of an external screen device is also arranged at the lower end of the body, and the switch button is electrically connected to the circuit board.

10. The smart phone external screen device according to claim 1, characterized in that: The length of the main body is smaller than that of the smart phone. When the main body is attached to the back of the smart phone, the rear camera of the smart phone is not blocked by the main body.

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