Vehicle-mounted display device

Abstract

The utility model provides a vehicle-mounted display device. The vehicle-mounted display device comprises a display screen embedded in a shell; a rear shell is arranged on the back surface of the shell; the shell is provided with a fool-proof RS485 data interface; the RS485 data interface passes through a signal line of the plug-in male head matched with the RS485 data interface; an antenna electrically connected to a circuit board disposed within the housing through an RF line; and the display screen is electrically connected to the antenna and the RS485 data interface through a decoding unit. By adopting a fool-proof RS485 data interface, increasing antenna receiving signals, reducing information processing burden, obtaining data in multiple channels and combining with an optimized decoding process, key information such as stations and time can be quickly updated, and the display real-time performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field, in particular to a vehicle-mounted display device. BACKGROUND

[0002] With the development of science and technology, display screen technology develops continuously and matures, and is often used on public transport facilities, can not only play advertisement information and broadcast media information, but also can display station information, arrival situation and time information in real time, so that passengers can obtain relevant information in time while riding.

[0003] The current vehicle-mounted display mainly displays station information, time information and the like through a video interface and a video line, directly plays the video information, that is, the information is played synchronously with the video after encoding, and is decoded and displayed synchronously in the display, which is not conducive to the processing of the display, increases the information processing amount and causes large delay. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model is provided to provide a vehicle-mounted display device which overcomes the above problems or at least partially solves the above problems.

[0005] To solve the above problems, the utility model discloses a vehicle-mounted display device, which comprises a display screen embedded in a shell.

[0006] The back of the shell is provided with a rear shell body.

[0007] The shell is provided with a foolproof RS485 data interface, and the RS485 data interface is connected to the signal line of a plug male head matched therewith.

[0008] An antenna is electrically connected to a circuit board arranged in the shell through an RF line.

[0009] The display screen is electrically connected to the antenna and the RS485 data interface through a decoding unit.

[0010] Optionally, the other end of the signal line is provided with a clamping terminal, and the clamping terminal is provided with a buckle.

[0011] Optionally, the signal line is twisted with a plurality of conductive wires, and the outer insulating layer is made of PVC material.

[0012] Optionally, the signal line is further provided with a label.

[0013] Optionally, the utility model further comprises a mounting bracket, and the mounting bracket is mounted on the rear shell body through screws.

[0014] Optionally, the rear shell is made of iron material, and the base of the antenna is provided with a magnet.

[0015] The utility model has the advantages of the following:

[0016] The display screen is embedded in the shell; the back of the shell is provided with a rear shell; the shell is provided with a fool-proof RS485 data interface; the RS485 data interface is connected to the signal line of a plug male head matched therewith; an antenna is electrically connected to a circuit board arranged in the shell through an RF line; the display screen is electrically connected to the antenna and the RS485 data interface through a decoding unit. By adopting the fool-proof RS485 data interface, increasing the antenna to receive signals, reducing the information processing burden, acquiring data through multiple channels, combining the optimized decoding process, the key information such as the station and the time can be quickly updated, the display real-time performance is improved, and the passengers are prevented from misjudging; on the other hand, the RS485 interface is anti-interference, independent transmission and antenna supplement, the system stability is enhanced, the failure risk is reduced, and the maintenance cost is reduced; in addition, diversified data access lays a foundation for subsequent access to an intelligent Internet of Things system and expansion of display content, and meets the development needs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a vehicle-mounted display device provided by an embodiment of the utility model;

[0018] Figure 2 is a signal line structure schematic view of a vehicle-mounted display device provided by an embodiment of the utility model;

[0019] Figure 3 is a clamping terminal structure schematic view of a vehicle-mounted display device provided by an embodiment of the utility model;

[0020] Figure 4 is a plug male head structure schematic view of a vehicle-mounted display device provided by an embodiment of the utility model;

[0021] Figure 5 is a signal line cross-section structure schematic view of a vehicle-mounted display device provided by an embodiment of the utility model;

[0022] Figure 6 is a structural schematic view of a vehicle-mounted display device with a mounting bracket provided by an embodiment of the utility model.

[0023] In the drawing: 101, shell; 102, rear shell; 103, antenna; 104, mounting bracket; 201, clamping terminal; 202, signal line; 203, plug male head; 204, buckle; 205, label. DETAILED DESCRIPTION

[0024] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0025] With reference to Figure 1 An embodiment of the vehicle-mounted display device is shown in the structural schematic view, which can specifically include a display screen embedded in the shell 101; the back of the shell 101 is provided with a rear shell 102; the shell 101 is provided with a foolproof RS485 data interface; the RS485 data interface is connected to the signal line 202 of the mating male head 203; the antenna 103 is connected to the circuit board in the shell 101 through the RF line; the display screen is connected to the antenna 103 and the RS485 data interface through the decoding unit.

[0026] The above RS485 interface and antenna 103 can realize real-time transmission and reception of wired data and wireless data, and since the RS485 signal is a differential signal, it has good anti-interference ability, which can effectively avoid the signal interference caused by the complexity of circuit elements in public transport tools and large interference. In addition, through the above decoding unit, only the relevant instructions from the sending end are received for corresponding decoding, and then the information to be displayed is displayed on the display screen or superimposed on the image and displayed on the display screen. There is no need to combine the required display content with the image first and then transmit it to the display screen for display. Since the length of the decoded instruction is short, the image and the required updated information such as station information and time information are controlled by separate open lines or 485 signals, which do not occupy the video line, thereby ensuring the real-time and high efficiency of information display.

[0027] It should be noted that the principle of displaying text and images on the display screen is different, wherein the text contained in the image is integrated with the image, and the text (characters) thereon actually belongs to part of the text; and the text (characters) can be directly displayed by calling the encoding of the character library to form dot matrix information according to the character coding. Directly displaying text usually only needs to store the encoding and font library information of the text, as well as some basic typesetting formats, and the storage space occupied is relatively small. Image display text needs to store the pixel information of the entire image, and the size of the image file is usually much larger than that of the pure text file, especially for images containing a large amount of text, which will occupy more storage space and transmission bandwidth. Since directly displaying text occupies less space, the transmission speed is faster during network transmission or data storage, which can save transmission time and traffic cost. For some applications with high real-time requirements, such as online document editing and instant messaging, directly displaying text can present the content to the user faster and improve the user experience.

[0028] In an example of the present application, the vehicle-mounted display device is used to display station information, for example, a station display screen on a subway car door, and only needs to send a 0x01 command character through a broadcast line state, the command character corresponding to a station board character is 0x02, and the command character corresponding to a car screen character is 0x03, which is used for characters and display time; the command character corresponding to a car screen advertisement is 0x04, which can be used to display promotional language through rotation, etc., and only needs to transmit the above simple command character through an antenna or an RS485 data interface, and the decoding unit in the above display device is used for decoding and calling corresponding functions. Compared with the existing display device, when the image needs to be changed, the above-mentioned direct control through the command character has the problems of slow switching processing speed and low efficiency, and the above-mentioned direct control through the command character has the problems of small data volume and fast and efficient processing.

[0029] In an embodiment of the present application, the other end of the signal line 202 is provided with a clamping terminal 201, and the clamping terminal is provided with a buckle 204. The buckle provided thereon can be used as a direction mark on one hand, and when connected with the interface, the direction can be easily identified; on the other hand, the buckle 204 makes the clamping terminal 201 to be connected with the terminal which is more firmly matched with it, preventing the signal line from falling off due to vibration of the vehicle, and ensuring good communication.

[0030] In an embodiment of the present application, the signal line 202 is twisted with a plurality of conductive wires, and the outer insulating layer is made of PVC material. The conductive wire twisted with a plurality of wires can better resist tension and bending. The PVC material has the advantages of good insulation performance, good chemical resistance, good stability and low cost.

[0031] In an embodiment of the present application, the signal line 202 is further provided with a label 205. The signal line 202 is identified by the label 205, for example, 485A, 485B and GND are marked on the specific signal line, which facilitates identification of the line sequence.

[0032] In an embodiment of the present application, a mounting bracket 104 is further included, which is mounted on the rear shell 102 by screws, and the mounting bracket 104 can facilitate mounting the vehicle-mounted display device on the vehicle or the position of the application scene.

[0033] In an embodiment of the present application, the rear shell 102 is made of iron material, and the base of the antenna 103 is provided with a magnet. The magnet provided on the base of the antenna 103 can facilitate the installation of the antenna 103 on the rear shell or the vehicle body with iron material in a magnetic way. The position of the antenna 103 can also be easily moved without being fixed by screws or adhesion, which is beneficial to setting the position of the antenna to achieve better wireless signal transmission and reception effect.

[0034] In the present application, a foolproof RS485 data interface is adopted. The RS485 interface is a commonly used serial communication interface in the industry, which has the advantages of long transmission distance and strong anti-interference ability. It adopts differential signal transmission, compared with the traditional video transmission mode, it can transmit data information such as site and time in a more stable and efficient way, and does not need to be synchronized with video information for encoding and decoding, greatly reducing the data processing burden of the display. Because it separates the data transmission, the display does not need to process complex video and data mixed encoding at the same time, focuses on display function, and effectively solves the problem of large amount of information processing. Because the information processing burden is reduced, multi-channel data acquisition and optimized decoding process, the vehicle-mounted display can update the key information such as site and time more quickly, passengers can know the latest dynamic in time, reduce the misjudgment caused by information delay, such as knowing whether the bus is late, whether the arrival time of the next station has changed, etc., and improve the travel experience. The anti-interference of RS485 interface and the independent data transmission path, combined with the supplement of antenna receiving signal, reduce the display failure risk caused by video transmission line interference, coding error and other problems, make the whole vehicle-mounted display system more stable and reliable, reduce maintenance cost and troubleshooting difficulty. In the technical scheme of the present application, diversified data access methods lay the foundation for future functional expansion, such as subsequent access to in-vehicle intelligent Internet of Things system, display of vehicle surrounding environment information, advertisement push and more content, without being limited by data processing bottleneck, meeting the needs of the development of vehicle-mounted display.

[0035] Finally, it should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0036] The above describes in detail the vehicle-mounted display device provided by the utility model, and the principle and implementation mode of the utility model are described by applying specific examples, and the above description of the examples is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model, and the above description should not be understood as the limitation of the utility model.

Claims

1. A vehicle-mounted display device, characterized in that, It comprises: a display screen embedded in a shell (101); a back of the shell (101) is provided with a rear housing (102); the shell (101) is provided with a foolproof RS485 data interface; the RS485 data interface is connected to the signal line (202) of the plug-in male head (203) matched therewith; an antenna (103) is connected to the circuit board arranged in the shell (101) through an RF line; the display screen is electrically connected to the antenna and the RS485 data interface through a decoding unit.

2. The in-vehicle display device according to claim 1, characterized by The other end of the signal line (202) is provided with a clamping terminal (201) provided with a buckle (204).

3. The in-vehicle display device according to claim 1, characterized by The signal line (202) is twisted with multiple conductive wires, and the outer insulation layer is made of PVC material.

4. The in-vehicle display device according to claim 3, characterized by The signal line (202) is also provided with a label.

5. The in-vehicle display device according to claim 1, characterized by It also comprises a mounting bracket (104) mounted on the rear housing (102) by screws.

6. The in-vehicle display device according to claim 1, characterized by The rear housing (102) is made of iron material, and the base of the antenna (103) is provided with a magnet.

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