Sun shade for LED (light-emitting diode) display screen

Abstract

The utility model discloses an LED display screen sun shade which comprises a transparent shade body, the outer side of the transparent shade body is coated with an anti-ultraviolet coating, the two sides of the transparent shade body are connected with the two sides of a display screen in a sliding mode, a lifting assembly is arranged at the bottom of the transparent shade body, and a guide assembly is arranged at the top of the transparent shade body. The lifting assembly comprises a transmission shaft, first machine shells are arranged at the two ends of a shaft body of the transmission shaft, the shaft body of the transmission shaft is rotationally connected with the side walls of the first machine shells, the first machine shells are fixed to the end face of the bottom of the display screen, a wire shaft is fixed to the shaft body, located in the first machine shells, of the transmission shaft, and a steel wire rope is wound around the shaft body of the wire shaft. Two ratchet mechanisms are arranged in the center of a shaft body of the transmission shaft, the guide assembly comprises wire guide wheels, the wire guide wheels are arranged on the two sides of the top of the display screen, one end of the steel wire rope is connected with a shaft body of the transmission shaft, and the other end of the steel wire rope is connected with the top end of the transparent cover.

Description

Technical Field

[0001] The utility model belongs to the technical field of outdoor display screen protection, and in particular relates to a sunshade cover for an LED display screen. Background Art

[0002] With the continuous advancement of science and technology, LED displays are widely used in various public places and outdoors as an important tool for information dissemination and display. Since ultraviolet rays (UV) in sunlight are a type of electromagnetic radiation with high energy, they can damage many materials. For LED displays, ultraviolet rays can damage the organic materials in the LED display, causing problems such as screen color distortion and reduced brightness. At the same time, long-term exposure to ultraviolet rays may cause LED lamp beads to age, which in turn causes pixel failure and causes bad pixels on the display. Ultraviolet rays can affect the contrast of the display, causing the image display effect to deteriorate.

[0003] In order to reduce the potential damage of ultraviolet rays to LED display screens, effective measures will be taken to prevent direct sunlight from shining on the surface of the display screen. In actual operation, sunshade facilities are usually installed to reduce the impact of ultraviolet rays. However, the common sunshade facilities such as awnings currently have problems such as limited field of view and insufficient aesthetics. At the same time, some sunshades with closed design also have certain inconveniences in later maintenance work. Therefore, the utility model proposes a sunshade for an LED display screen, which does not hinder observation and blocks ultraviolet rays, protects the display screen from damage, and prolongs its life. At the same time, it is convenient for later maintenance and improves the convenience of maintenance.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sunshade cover for an LED display screen, comprising a transparent cover body, the outer side of the transparent cover body is coated with an anti-ultraviolet coating, two sides of the transparent cover body are slidably connected to two sides of the display screen, a lifting assembly is arranged at the bottom of the transparent cover body, and a guide assembly is arranged at the top of the transparent cover body, the lifting assembly comprises a transmission shaft, both ends of the transmission shaft body are provided with a first housing, the transmission shaft body and the side wall of the first housing are rotatably connected, the first housing is fixed to the bottom end surface of the display screen, the transmission shaft is located in the first housing and a bobbin is fixed to the body, a wire rope is wound around the bobbin body, two ratchet mechanisms are arranged at the center of the transmission shaft body, the guide assembly comprises a wire pulley, the wire pulley is arranged on both sides of the top of the display screen, one end of the wire rope is connected to the bobbin body, the other end of the wire rope is connected to the top of the transparent cover body, and the wire rope body passes through the first housing and is installed on the wire pulley.

[0006] As a preferred technical solution of the utility model, a handle is installed at one end of the transmission shaft, and a detachable structure is formed between the handle and the transmission shaft.

[0007] As a preferred technical solution of the utility model, the two ratchet mechanisms each include a ratchet, a pawl and a second housing, the ratchet is fixed to the shaft body of the transmission shaft, the second housing is fixed to the bottom end surface of the display screen, one end of the pawl is engaged with the ratchet tooth groove, the other end of the pawl is rotatably connected to the second housing, and a pin hole is provided on the side wall of the second housing on one side of the pawl.

[0008] As a preferred technical solution of the utility model, the ratchets and pawls inside the two ratchet mechanisms are installed opposite to each other on the shaft body of the transmission shaft.

[0009] As a preferred technical solution of the utility model, a third housing is arranged outside the steel wire rope body and the guide wheel, and the third housing is fixed on the top of the display screen.

[0010] As a preferred technical solution of the present utility model, one side of the first housing, the second housing and the third housing are all movably connected with a maintenance panel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The transparent cover is designed to cleverly cover one side of the display screen, which does not hinder the user's direct observation of the display screen, and effectively blocks the ultraviolet rays in the sun through the anti-ultraviolet coating, thereby protecting the display screen from ultraviolet damage and significantly extending its service life. In addition, in order to facilitate later maintenance, the transparent cover is specially designed with a transmission shaft structure, and maintenance personnel can achieve the lifting and lowering operation of the transparent cover by simply turning it, which greatly improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of the first housing and the third housing in the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the meshing of the ratchet teeth and the ratchet wheel in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the ratchet teeth disengaging from the ratchet wheel tooth groove in the utility model;

[0018] In the figure: 1. transparent cover; 2. transmission shaft; 3. first housing; 4. spool; 5. wire rope; 6. maintenance panel; 7. guide wheel; 8. turning handle; 9. ratchet; 10. pawl; 11. second housing; 12. pin hole; 13. third housing. DETAILED DESCRIPTION

[0019] 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.

[0020] Example

[0021] See also Figure 1 -, the utility model provides the following technical solutions: a sunshade for an LED display screen, the sunshade is composed of a transparent cover body 1, and the two sides of the transparent cover body 1 and the two sides of the display screen are designed with a sliding connection mechanism, so that the transparent cover body 1 can slide up and down along the screen smoothly. The outer side of the transparent cover body 1 is coated with an anti-ultraviolet coating to prevent ultraviolet rays in the sun from penetrating the cover body 1, which is used to protect the display screen. The bottom of the transparent cover body 1 is equipped with a lifting component, and the top is provided with a guide component to ensure the stable lifting and guiding of the sunshade. The core component of the lifting component is a transmission shaft 2, and both ends of the transmission shaft 2 are equipped with a first housing 3. The shaft body and the side wall of the first housing 3 are connected in a rotating manner, and the first housing 3 is firmly installed on the bottom end face of the display screen. The transmission shaft 2 is fixed with a bobbin 4 on the shaft body located in the first housing 3, and a steel wire rope 5 is wound on the bobbin 4 to realize the lifting and lowering operation of the transparent cover body 1. Two ratchet mechanisms are provided at the center of the shaft body of the transmission shaft 2 to ensure the accuracy and stability of the lifting and lowering of the transparent cover body 1. The guide assembly is mainly composed of a guide wheel 7, which is installed on both sides of the top of the display screen. One end of the steel wire 5 is connected to the shaft body of the spool 4, and the other end is connected to the top of the transparent cover 1. The rope body of the steel wire 5 passes through the first housing 3 and is installed on the guide wheel 7 to guide and support the lifting movement of the sunshade.

[0022] In order to prevent unauthorized persons from maliciously adjusting the transmission shaft 2, in this embodiment, as a preferred technical solution of the utility model, a handlebar 8 is installed at one end of the transmission shaft 2, and a detachable structure is formed between the handlebar 8 and the transmission shaft 2.

[0023] In order to ensure the accuracy and stability of the lifting and lowering of the transparent cover body 1, in this embodiment, as a preferred technical solution of the utility model, the two ratchet mechanisms include a ratchet 9, a pawl 10 and a second housing 11, the ratchet 9 is fixed to the shaft body of the transmission shaft 2, the second housing 11 is fixed to the bottom end surface of the display screen, one end of the pawl 10 is engaged with the tooth groove of the ratchet 9, and the other end of the pawl 10 is rotatably connected to the second housing 11, and a pin hole 12 is opened on the side wall of the second housing 11 on the side of the pawl 10.

[0024] For the purpose of ensuring safety during the forward and reverse rotation of the transmission shaft 2 , in this embodiment, as a preferred technical solution of the utility model, the ratchets 9 and pawls 10 inside the two ratchet mechanisms are installed opposite to each other on the axial body of the transmission shaft 2 .

[0025] In order to, in this embodiment, as a preferred technical solution of the utility model, a third housing 13 is arranged outside the rope body of the wire rope 5 and the guide wheel 7, and the third housing 13 is fixed to the top of the display screen.

[0026] In order to, in this embodiment, as a preferred technical solution of the utility model, one side of the first housing 3, the second housing 11 and the third housing 13 are all movably connected with a maintenance panel 6.

[0027] In summary, with the aid of the above technical solution of the utility model, when in use, the transparent cover 1 can block the ultraviolet rays in the sun. When maintaining, the handle 8 can be directly turned, and the handle 8 drives the transmission shaft 2 to drive. During the rotation of the transmission shaft 2, the spool 4 is driven to rotate and then the wire rope 5 is loosened. The wire rope 5 is guided along the guide wheel 7, so that the transparent cover 1 slowly falls down, and the display screen is exposed for maintenance;

[0028] During the rotation of the transmission shaft 2, the body of the transmission shaft 2 drives the ratchet 9 of the ratchet mechanism on one side to rotate. When the ratchet 9 rotates to one side, the pawl 10 will directly slide over the ratchet teeth of the ratchet 9. At the same time, when positioning, the turning handle 8 can be directly loosened. Due to the weight of the transparent cover 1, the steel wire rope 5 will continue to fall, and then the spool 4 and the transmission shaft 2 will be pulled to rotate. When the transmission shaft 2 rotates, it will drive the ratchet 9 to rotate in the opposite direction. With the help of the pawl 10 embedded in the tooth groove of the ratchet 9, the transmission shaft 2 can be prevented from reversing, thereby preventing the transparent cover 1 from falling.

[0029] After the display screen is maintained, when the transparent cover 1 needs to cover the display screen, open the maintenance panel 6 of the second housing 11 of the previous ratchet mechanism, then push open the pawl 10 in the previous ratchet mechanism, so that one end of the pawl 10 is out of the tooth groove of its own ratchet 9, and then insert the pin shaft into the pin hole 12 of the corresponding side wall of the second housing 11 to prevent one end of the pawl 10 from freely falling onto the ratchet 9 again, and at the same time pull out the pin shaft in the second housing 11 of the other ratchet mechanism, so that the pawl 10 of the other ratchet mechanism can fall onto the surface of the corresponding ratchet 9, then turn the handle 8, tighten the wire rope 5 with the help of the transmission shaft 2 and the spool 4, and pull the transparent cover body 1 slowly upward to cover the surface of the display screen.

[0030] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sunshade for an LED display screen, characterized in that: The device comprises a transparent cover (1), the outer side of the transparent cover (1) is coated with an anti-ultraviolet coating, the two sides of the transparent cover (1) are slidably connected to the two sides of the display screen, the bottom of the transparent cover (1) is provided with a lifting assembly, the top of the transparent cover (1) is provided with a guide assembly, the lifting assembly comprises a transmission shaft (2), both ends of the shaft body of the transmission shaft (2) are provided with a first housing (3), the shaft body of the transmission shaft (2) and the side wall of the first housing (3) are rotatably connected, and the first housing (3) is fixed to the bottom end surface of the display screen. The transmission shaft (2) is located in the first housing (3) and has a spool (4) fixed to its shaft body. The spool (4) is wound with a wire rope (5). Two ratchet mechanisms are arranged at the center of the shaft body of the transmission shaft (2). The guide assembly comprises a guide wheel (7). The guide wheel (7) is arranged on both sides of the top of the display screen. One end of the wire rope (5) is connected to the shaft body of the spool (4), and the other end of the wire rope (5) is connected to the top of the transparent cover (1). The wire rope (5) passes through the first housing (3) and is installed on the guide wheel (7).

2. The LED display screen sunshade according to claim 1, characterized in that: A turning handle (8) is installed at one end of the transmission shaft (2), and a detachable structure is formed between the turning handle (8) and the transmission shaft (2).

3. The LED display screen sunshade according to claim 1, characterized in that: The two ratchet mechanisms each comprise a ratchet (9), a pawl (10) and a second housing (11); the ratchet (9) is fixed to the shaft body of the transmission shaft (2); the second housing (11) is fixed to the bottom end surface of the display screen; one end of the pawl (10) is meshed with a tooth groove of the ratchet (9); the other end of the pawl (10) is rotatably connected to the second housing (11); and a pin hole (12) is provided on a side wall of the second housing (11) located on one side of the pawl (10).

4. The LED display screen sunshade according to claim 3, characterized in that: The ratchet wheels (9) and ratchet pawls (10) inside the two ratchet mechanisms are installed opposite to each other on the shaft body of the transmission shaft (2).

5. The LED display screen sunshade according to claim 1, characterized in that: A third housing (13) is arranged outside the rope body of the steel wire rope (5) and the guide wheel (7), and the third housing (13) is fixed on the top of the display screen.

6. The LED display screen sunshade according to claim 1, characterized in that: One side of the first housing (3), the second housing (11) and the third housing (13) is movably connected to a maintenance panel (6).

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