Portable display access device free of connection with power supply

Abstract

The utility model relates to the technical field of rail transit, and particularly discloses a portable power-connection-free display access device which comprises a display screen body and a display shell. Rotating shafts are rotationally connected to the two sides of the outer wall of the display shell, a supporting frame is fixedly connected to the two rotating shafts, a screen is arranged on the display screen body, 3D printing is conducted on the display shell and the supporting frame through the FDM technology, the overall length of the display shell is 236 mm, the width of the display shell is 160 mm, and the height of the display shell is 26 mm. The display screen body and the display shell are connected and installed through screw columns. The access device provided by the utility model is used for special conditions such as old interfaces, no electricity taking environment and limited operation space in maintenance operation, gives consideration to factors such as volume, weight, endurance and the like, carries out time and economic benefits such as rapid manufacturing, convenient replacement and maintenance, extremely low cost and the like by utilizing a 3D printing mode of an FDM technology, and realizes small batch, low cost, rapid manufacturing, high efficiency and high reliability. And adding purposes and appearances according to needs.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transportation, and in particular relates to a portable display access device which does not require power supply. Background Art

[0002] In the communication signal system, many system devices have outdated interfaces for outputting display signals, and VGA (Video Graphics Array) is still the mainstream. The main reasons are as follows:

[0003] Compatibility and stability: VGA is a widely used display interface standard with wide compatibility and stability. In the rail transit industry, many control systems and display devices designed earlier may still use VGA interfaces because they are compatible with other devices and systems and can operate stably for a long time.

[0004] Continued use of old equipment: The equipment update cycle in the rail transit industry is relatively long. Many display devices may have been installed and operated for many years. Due to cost and resource constraints, it may not be realistic to update all equipment. Therefore, some rail transit systems may choose to continue using VGA displays to extend the life of the equipment.

[0005] High reliability and anti-interference ability: In the rail transit industry, display devices need to have high reliability and anti-interference ability to cope with possible electromagnetic interference and environmental pressure. The transmission method of the VGA interface is relatively simple, and the signal anti-interference ability is strong, which can better meet the requirements of the rail transit industry for stability and reliability;

[0006] Consider cost-effectiveness: Updating display devices and migrating to new display interface standards (such as HDMI, DisplayPort) may require replacing hardware, rewriting software, etc., which requires a large cost investment and time. Given the limited economy and budget, the rail transit industry may give priority to other more important improvements and needs and not update the display interface for the time being.

[0007] However, the maintenance environment of rail transit communication signals is relatively complex. Tools and equipment spare parts are usually carried when repairs are carried out, and on-site personnel cannot use transportation tools such as flatbed trucks. In addition, there is usually no power supply on site. Portable displays with built-in batteries usually do not have multiple display interfaces such as the older VGA, and the display interface for power display access in the existing technology is usually a VGA display interface, but the market demand is extremely small, the cost of producing it alone is high, and the efficiency is low. Utility Model Content

[0008] The purpose of the utility model is to provide a portable display access device that does not require power supply, so as to solve the problems raised in the above background technology.

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

[0010] A portable display access device that does not require power supply, comprising a display screen and a display housing;

[0011] The outer wall of the display housing is rotatably connected with rotating shafts on both sides, and the two rotating shafts are fixedly connected with supporting frames. The display screen is provided with a screen.

[0012] Preferably, the display housing and the support frame are 3D printed using FDM technology, and the overall length of the display housing is 236 mm, the width is 160 mm, and the height is 26 mm to ensure the portability, mechanical strength and rapid production capability of the device.

[0013] Preferably, the display screen body and the display shell are connected and installed by means of a screw column, and the screw column is embedded with a knurled nut with an outer diameter of 3 mm and an inner diameter of 2 mm. The screw column is installed with the knurled nut to increase the accuracy and mechanical strength when the screw is installed, so that the components are not easy to fall off. At the same time, the internal space of the display shell adopts the method of adding partition strips, so that the space for circuit elements is of appropriate size and not easy to shake, and the overall strength is enhanced from the inside.

[0014] Preferably, a removable battery is provided inside the display shell, and the battery installation space inside the display shell is set to 160mm in length, 78mm in width and 20mm in height. A DC connector is provided on one side of the battery. The battery and the charging DC connector are both located inside the display shell. The battery in the battery power supply compartment uses 12V lithium batteries of different sizes depending on the intensity of the operation, so as to reduce the workload.

[0015] Preferably, the screen arranged on the display screen is 0.4 mm lower than the peripheral frame, so that the screen will not be squeezed when placed face down.

[0016] Preferably, the support frame can be rotated 180 degrees to open and close, and the bottom of the support frame is provided with damping, which can enable it to hover at any position, making it convenient to place the display at different angles, and has a carrying handle function when fully opened, which is convenient for movement, and the friction force at the bottom of the support frame is increased through the effect of damping, thereby correspondingly increasing the supporting effect of the support frame.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The display access device is small in size, which can overcome the situation where a large display cannot be used when data is refreshed or troubleshooting is required in a limited working space environment, and can overcome the situation where it is inconvenient to obtain power on site such as working on trains or outdoors, and solves the problem that display devices are not easy to carry during equipment maintenance work that requires an old VGA interface;

[0019] The access device proposed in the utility model is used for special situations such as old interfaces, no power supply environment, and limited working space during maintenance operations. It takes into account factors such as volume, weight, and endurance, and uses the 3D printing method of FDM technology to achieve rapid production, convenient replacement and maintenance, and extremely low cost, etc., which can achieve time and economic benefits, and realizes a small batch, low cost, fast production, and on-demand addition of uses and appearances. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is the back structure diagram of the utility model.

[0022] In the figure: 1. display screen; 2. display housing; 3. rotating shaft; 4. supporting frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-2 As shown, a portable display access device that does not require power supply is characterized in that it includes a display screen 1 and a display shell 2; the outer wall of the display shell 2 is rotatably connected to a rotating shaft 3 on both sides, and a support frame 4 is fixedly connected to the two rotating shafts 3, and a screen is arranged on the display screen 1.

[0025] The utility model further specifically details that the display housing 2 and the support frame 4 are 3D printed using FDM technology, and the overall length of the display housing 2 is 236 mm, the width is 160 mm, and the height is 26 mm, so as to ensure the portability, mechanical strength and rapid production capability of the device;

[0026] The utility model further specifically describes that the display screen 1 and the display housing 2 are connected and installed by means of screw columns, and the screw columns are embedded with knurled nuts having an outer diameter of 3 mm and an inner diameter of 2 mm. The screw columns are installed by means of knurled nuts, which increases the precision and mechanical strength of the screws during installation, making it difficult for the components to fall off. At the same time, the internal space of the display housing 2 adopts a partitioning strip method, so that the space size of the circuit components is suitable and not easy to shake, and the overall strength is enhanced from the inside.

[0027] The utility model further specifically describes that a detachable battery is provided inside the display housing 2, and the battery installation space inside the display housing 2 is set to be 160mm long, 78mm wide and 20mm high. A DC connector is provided on one side of the battery. The battery and the charging DC connector are both located inside the display housing 2. The battery in the battery power supply compartment uses 12V lithium batteries of different volumes depending on the intensity of the operation, so as to reduce the workload;

[0028] The utility model further specifically describes that the screen set on the display body 1 is 0.4mm lower than the outer frame, so that the screen will not be squeezed when it is placed face down. The support frame 4 can be rotated 180 degrees to open and close, and the bottom of the support frame 4 is provided with damping, so that it can be suspended at any position, which is convenient for placing the display at different angles, and has a carrying handle function when fully opened, which is convenient for movement. Through the effect of damping, the friction force at the bottom of the support frame 4 is increased, and the supporting effect of the support frame 4 is correspondingly increased;

[0029] Through the setting of the above technical solution, the display access device is small in size, which overcomes the situation where a large display cannot be used when data is refreshed or troubleshooting is required under limited working space environment, and overcomes the situation where it is inconvenient to obtain power on site such as working on trains or outdoor work, and solves the problem that display devices are not easy to carry in equipment maintenance work that requires old VGA interfaces;

[0030] The access device proposed in the utility model is used for special situations such as old interfaces, no power supply environment, and limited working space during maintenance operations. It takes into account factors such as volume, weight, and endurance, and uses the 3D printing method of FDM technology to achieve rapid production, convenient replacement and maintenance, and extremely low cost, etc., which can achieve time and economic benefits, and realizes a small batch, low cost, fast production, and on-demand addition of uses and appearances.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable display access device that does not require power supply, characterized in that: It comprises a display screen (1) and a display housing (2); Rotating shafts (3) are rotatably connected to the outer walls of the display housing (2), and support frames (4) are fixedly connected to the two rotating shafts (3). A screen is arranged on the display screen (1).

2. A portable display access device without power supply according to claim 1, characterized in that: The display housing (2) and the support frame (4) are 3D printed using FDM technology; the overall length of the display housing (2) is 236 mm, the width is 160 mm, and the height is 26 mm.

3. A portable display access device without power supply according to claim 1, characterized in that: The display screen body (1) and the display housing (2) are connected and installed via screw columns, and the screw columns are embedded with knurled nuts with an outer diameter of 3 mm and an inner diameter of 2 mm.

4. A portable display access device without power supply according to claim 1, characterized in that: A detachable battery is arranged inside the display housing (2), and the battery installation space inside the display housing (2) is set to be 160 mm long, 78 mm wide and 20 mm high, and a DC connector is arranged on one side of the battery.

5. A portable display access device without power supply according to claim 1, characterized in that: The screen arranged on the display screen (1) is 0.4 mm lower than the peripheral frame.

6. A portable display access device without power supply according to claim 1, characterized in that: The support frame (4) can be rotated 180 degrees to open and close, and a damper is provided at the bottom of the support frame (4).

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