CN219738455U

CN219738455U - Spliced screen

Info

Publication number: CN219738455U
Application number: CN202223254846.7U
Authority: CN
Inventors: 贾雪松; 顾国璋; 章军; 罗凌翔
Original assignee: Shenzhen New Television Photoelectric Technology Co ltd
Current assignee: Shenzhen New Television Photoelectric Technology Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-09-22
Anticipated expiration: 2032-12-06

Abstract

The utility model discloses a spliced screen, which comprises a screen main body, a back shell and a small knapsack which are sequentially arranged; the utility model discloses a dustproof heat dissipation device, including the backplate of concatenation screen back of the body shell, the knapsack sets up on the backplate of concatenation screen back of the body shell, the frame group of concatenation screen back of the body shell connect in the periphery of screen main part, and the screen main part divides to establish on the both sides of the frame group of concatenation screen back of the body shell with the backplate of concatenation screen back of the body shell, dustproof louvre has been seted up on the lateral wall of the knapsack, is located dustproof louvre department at the lateral surface of the knapsack and is provided with and is used for blocking the dust on the perpendicular to dustproof louvre direction and passes through the arc dust cover that is of dustproof louvre. Through setting up the dust cover, block perpendicular to dustproof louvre one side, prevent that the dust of perpendicular to dustproof louvre from entering into the knapsack and blocking the louvre to guarantee the normal use of knapsack.

Description

Spliced screen

Technical Field

The utility model relates to the technical field of spliced screens, in particular to a spliced screen back shell and a spliced screen.

Background

The spliced screen belongs to commercial display equipment, has become commercial display equipment in urban areas, particularly in commercial areas, and is an information playing facility for realizing multimedia terminal display through information transmission. The novel display mode is provided for the propagation of urban business information and public welfare information.

The small knapsack is one of important structures of the spliced screen and is used for power supply and signal output of the spliced screen, and heat dissipation holes are formed in some existing small backpacks and used for ventilation and heat dissipation during operation of power supplies and the like in the small knapsack. But the dust easily enters the heat dissipation holes to block the heat dissipation holes, so that the heat dissipation of the backpack is affected, and the service life of the backpack is shortened.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: the spliced screen is provided to solve the problem that dust is easy to enter a heat dissipation hole.

In order to solve the technical problems, the utility model adopts a technical scheme that: providing a spliced screen, wherein the spliced screen comprises a screen main body, a back shell and a backpack which are sequentially arranged; the back shell comprises a back plate and a frame group, wherein one side of the frame group is connected to the periphery of the back plate, the backpack is arranged on the back plate, the other opposite side of the frame group is connected to the periphery of the screen main body so that the screen main body and the back plate are arranged on two sides of the frame group, and the back shell is characterized in that: the lateral wall of the small knapsack is provided with a dustproof heat dissipation hole, the outside surface of the small knapsack is provided with a dustproof cover which is used for blocking dust perpendicular to the direction of the dustproof heat dissipation hole from passing through the dustproof heat dissipation hole, and the dust is prevented from entering the small knapsack while flowing through the dustproof heat dissipation hole.

The screen main body comprises OC glass, a diffusion sheet and a diffusion plate which are sequentially arranged, and the diffusion sheet is arranged into three sheets.

The utility model provides a small knapsack, including being the casing of rectangle box-packed structure and locating the inside control portion of casing, a side of casing is connected on the one side of backplate dorsad screen main part, has seted up the louvre on a side of casing dorsad backplate, and the highest point that the inboard one end of louvre is higher than the outside one end of louvre is offered with the slope to dispel the heat to the inside structure of casing, and because louvre slope sets up, the dust of perpendicular to louvre is difficult to enter into in the louvre.

The dustproof heat dissipation holes are respectively formed in the side walls of the shell adjacent to the backboard, so that a plurality of side walls of the shell connected with the backboard form a heat dissipation structure.

The dust cover is in a quarter cylinder shape, one side of the dust cover, which is hollow in the inside and is long, is connected to one side edge of the dust cover, which is long, so that the dust cover is arranged at the dust hole, the other side of the dust cover, which is long, is open to be communicated with the inner cavity of the dust cover and the dust hole, which are long, and the dust on the direction perpendicular to the dust hole is blocked, and meanwhile, the heat dissipation effect of the shell can be improved.

The width of dustproof louvre is 2mm.

The shell is connected to two non-adjacent side edges of the backboard, a left fixing strip and a right fixing strip are respectively arranged, a positioning groove is respectively arranged on the left fixing strip and the right fixing strip, and a positioning column used for penetrating the positioning groove is arranged on the shell, so that the shell is convenient to install and position and limit.

The spliced screen back shell has at least the following beneficial effects: through setting up the dust cover, block perpendicular to dustproof louvre one side, prevent that the dust of perpendicular to dustproof louvre from entering into the knapsack and blocking the louvre to guarantee the normal use of knapsack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of a spliced screen of the present utility model;

FIG. 2 is an exploded view of a tiled screen of the present utility model;

FIG. 3 is an enlarged view of the portion B shown in FIG. 2

FIG. 4 is a schematic view of a spliced back shell structure of the utility model;

FIG. 5 is a rear view of a tiled screen back shell of the present utility model;

FIG. 6 is a front view of a tiled screen back shell of the present utility model;

FIG. 7 is an exploded view of a tiled screen back shell of the present utility model;

FIG. 8 is an enlarged schematic view of portion A of FIG. 7;

FIG. 9 is a front view of the tiled back shell of the present utility model after concealing the reflective sheet;

fig. 10 is a schematic structural view of a support column according to the present utility model.

The meaning of the reference numerals in the drawings are:

a back plate-1; a control line-11; positioning the bulge-12; a hook-13; a handle-14; a light bar-2; a reflection sheet-3; a through hole-31; perforation-32; frame group-4; middle frame-41; an outer frame-42; support column-5; a base-51; a mounting base-52; prismatic-53; double sided film-54; positioning through grooves-55; OC glass-61; a diffusion sheet-62; a diffusion plate-63; a housing-71; a power supply heat dissipation hole-72; a main board heat dissipation hole-73; dust cap-74.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The spliced screen comprises a screen main body, a small knapsack and a back shell.

Referring to fig. 1 and 3, the screen main body includes OC glass 61, diffusion sheets 62 and diffusion plates 63 sequentially arranged, the diffusion sheets 62 are arranged in three, and after the lamp bars are lighted, light is sequentially irradiated on the OC glass 61 through the diffusion plates 63, the diffusion sheets 62 to become uniform white light to form backlight to display contents.

The OC glass 61 adopts BOE original glass DV550FHB-NV1, has good display effect and high light transmittance, reduces the brightness requirement on the backlight lamp strip, and reduces the power consumption of the whole machine. The side strips 611 are arranged on two side edges of the OC glass 61, the OC glass 61 is connected between the outer frame 42 and the middle frame 41 of the frame group through the side strips 611, the overlapped and adaptive threaded holes are formed in each frame and the side strips 611, and the frame group and the side strips 611 are connected through bolts. The OC glass 61, the diffusion sheet 62 and the diffusion sheet 63 are disposed in this order along the side facing away from the back plate 1 to the side facing the back plate 1; six lugs are arranged on the three diffusion sheets 62, the diffusion plate 63 is made of PS plastic, and reflection strips are attached to the edges of the diffusion plate 63 to prevent light leakage. The utility model adopts the design of the diffusion plate 63 and the three layers of diffusion plates 62, eliminates the light increasing plate and reduces the cost.

The backpack comprises a shell 71 and a control part arranged inside the shell, wherein the control part comprises an I/O cover plate, a three-in-one power panel and a main board, the I/O cover plate, the three-in-one power panel and the main board are arranged on one side surface of the back shell, which is positioned on the outer side, and the I/O cover plate and the three-in-one power panel are electrically connected to the main board.

Specifically, the housing 71 is a 0.8mm black spray cold-rolled steel sheet. The casing 71 is rectangular box body shape, and has six faces, and one of them face is open to be set up, and casing 71 open one side is towards backplate 1 and connect in backplate 1, and I/O apron, trinity power strip and mainboard all are located casing 71 in order to be covered by casing 71, adopt trinity power strip to replace conventional T-con, constant current board and power strip, also greatly reduced the equipment man-hour when having reduced purchase cost for the complete machine cost is lower, and the maintenance is more convenient. A heat dissipation hole is formed in a side surface of the housing 71 facing away from the back plate 1, and a highest point of an end of the heat dissipation hole facing the inner side is formed in an inclined manner higher than an end of the heat dissipation hole facing the outer side, so that heat dissipation is performed on a structure inside the housing, and dust perpendicular to the heat dissipation hole is difficult to enter the heat dissipation hole due to the inclined arrangement of the heat dissipation hole. The heat dissipation holes include a power dissipation hole 72 and a main board heat dissipation hole 73, and the power dissipation hole 72 is located above the main board heat dissipation hole 73. Three-in-one switch mounting holes and mounting grooves are respectively formed in one side face of the bottom of the shell 71, the three-in-one power supply board extends to the inner side and the outer side of the shell 71 through the three-in-one switch mounting holes, the I/O cover board and the mounting grooves are clamped and assembled, and the mounting grooves are compatible with board card I/O boards of different types on the market, so that universality is improved, and production cost is reduced. The other three surfaces of the case 71 are provided with dust-proof heat radiation holes, the width of each dust-proof heat radiation hole is only 2mm, and after the power is applied, air in the case 71 can flow. And dustproof louvre can play the effect of strengthening rib, improves the rigidity of concatenation screen, and is difficult for warping more. The shell 71 is connected to two non-adjacent sides (namely, left and right sides or upper and lower sides) of the back shell, a left fixing strip and a right fixing strip are respectively arranged, a positioning groove is respectively arranged on the left fixing strip and the right fixing strip, and a positioning column used for penetrating the positioning groove is arranged on the shell 71, so that the left fixing strip and the right fixing strip are convenient to install and position when being installed, and the production efficiency is improved. Screw holes are formed in the left fixing strip, the right fixing strip and the shell 71 at matched positions, and the left fixing strip and the right fixing strip are connected to the shell 71 through screw holes through screw driving-in screws. When the split joint screen is electrified and operated, the heat productivity of the main board is small, the heat productivity of the three-in-one power supply board is large, the air is heated to flow upwards after the three-in-one power supply board heats and flows out from the dustproof radiating holes at the top, and cold air enters from the power radiating holes 72, the main board radiating holes 73 and other dustproof radiating holes to form air convection so as to continuously cool the heating parts. A quarter-cylindrical dust cover 74 is arranged at each dust-proof radiating hole on the outer side of the shell 71 for shielding the dust-proof radiating holes of the column, one side of the dust cover 74, which is hollow and long, is connected to one side of the dust-proof radiating holes so that the dust cover 74 covers the dust-proof radiating holes, one side of the dust cover 74, which is long, is open to communicate with the inner cavity of the dust cover 74 and the dust-proof radiating holes with the other side of the dust cover 74, the dust cover 74 can shield dust in the direction perpendicular to the dust-proof radiating holes, namely, the dust cover 74 can shield the dust-proof radiating holes in the direction perpendicular to the dust-proof radiating holes, and air can freely enter and exit to achieve the dust-proof purpose.

Referring to fig. 4 to 10, the back shell of the present utility model includes a back plate 1, a light bar 2 disposed on the back plate 1, a reflective sheet 3 disposed on the inner side of the inner plate, a frame group 4 disposed on the periphery of the back plate 1, and a support column 5 disposed on the back plate 1, wherein one side of the frame group 4 is connected to the back plate 1, the other side extends toward the side facing away from the back plate 1, and the support column 5 is used for supporting the diffusion sheet 62 after the spliced screen is assembled.

The backboard 1 is of a rectangular sheet structure, an inner frame (not shown in the figure) which is enclosed towards the backboard 1 is integrally formed on the periphery of the backboard 1 (namely, four sides of the backboard 1), and the inner frame is perpendicular to the backboard 1. The backboard 1 is provided with two surfaces, and a cavity part enclosed by the backboard 1 and the inner frame is the inner side of the backboard 1; the backboard 1 adopts a black spray-coated cold-rolled steel plate with the material of 0.7mm, the surface of the backboard adopts a large number of reinforcing ribs, and compared with the common backboard 1 on the market, the thickness of the backboard is reduced by 0.1-0.3 mm, and the strength of the backboard 1 is ensured while the weight and the cost are reduced. Be provided with four on the inboard face of backplate 1 dorsad and be used for hanging couple 13 and the handle 14 of backplate 1 of being convenient for taking of concatenation screen on the wall, couple 13 adopts 2.5mm thick steel sheet to make, connects through the Mylar between couple 13 and the backplate 1, couple 13 also can replace fossil fragments, and the user can select and install couple 13 directly on the erection column that corresponds to reduce concatenation screen complete machine weight and cost, also can select to install backplate 1 again after installing fossil fragments on the erection column, thereby improve the seal of concatenation screen complete machine, conveniently satisfy different customer demands, strong adaptability. A control line 11 is arranged on the backboard 1, a communication hole 31 is arranged on the backboard 1, one side of the control line 11 extends towards the inner side of the backboard 1, and the other side of the control line 11 passes through the communication hole 31 and extends towards one side surface of the backboard 1, which is opposite to the inner side.

The lamp strips 2 are arranged in a plurality of strips, the lamp strips 2 are parallel and are arranged on the surface of the inner side of the backboard 1 at intervals, the lamp strips 2 are fixed on the backboard 1 through bolts, and the control line 11 is electrically connected with each lamp strip 2. The lamp strip sets up to 8, and 8 lamp strip interval distribution have 8 LED's lamp pearl on every lamp strip. After the spliced screen is assembled, the control line 11 is connected with a power supply of the spliced screen to supply power to the lamp strip 2, and when the spliced screen is required to be used, the lamp beads of the lamp strip 2 are lightened, white light is emitted after the lamp beads are lightened, and the white light is changed into uniform white light through the diffusion sheet 62 to be irradiated on the screen main body to form backlight.

The reflector plate 3 is arranged on the surface of the inner side of the backboard 1, the light bar 2 is arranged between the reflector plate 3 and the backboard 1, after the light bar 2 is lightened, the reflector plate 3 provides backlight recovery for LCD (liquid crystal display), so that on-axis brightness is increased, more light is transmitted, and the use efficiency of the light is improved. Corresponding to the bolt that connects lamp strip 2 and backplate 1, set up a plurality of and bolt looks adaptation in reflector plate 3 and be used for the through-hole 31 that the bolt passed, and set up on reflector plate 3 with support column 5 looks adaptation be used for the perforation 32 that the support column 5 passed, perforation 32 is the rectangle.

The frame group 4 includes a middle frame 41 and an outer frame 42 which are sequentially arranged on the inner frame from inside to outside, and the middle frame 41 and the outer frame 42 are overlapped with the inner frame. The middle frame 41 is made of plastic and is made of white PS (PS: polystyrene, a plastic). The outer frame 42 is made of 201 stainless steel with the thickness of 0.3mm, black electrophoresis treatment is carried out on the surface of the outer frame 42, and compared with other coatings, the outer frame has the advantages of reducing the atmospheric pollution and the environmental damage, along with strong adhesive force, and keeping the spliced screen attractive overall.

The support column 5 sets up to a plurality of, and a plurality of support column 5 divides to set up into two sets of, and two sets of support column 5 symmetry set up on backplate 1, and after the whole equipment of concatenation screen, support column 5 supports from the axis both sides of diffusion piece 62, because support column 5 symmetric distribution, consequently, the axis both sides of diffusion piece 62 are evenly supported relatively.

Each support column 5 comprises a base 51 connected to the back plate 1, a mounting seat 52 connected to the base 51, and a prism 53 connected to the mounting seat 52, wherein the prism 53 is connected to the base 51 through the mounting seat 52, and the prism 53 is used for supporting a diffusion sheet 62 of the spliced screen. The base 51 has a rectangular sheet-like structure, and the base 51 is arranged parallel to the reflection sheet 3. An adhesive groove is formed in one side surface of the base 51 facing the backboard 1, the adhesive groove is formed along the side facing the backboard 1 towards the side deviating from the backboard 1 in a concave manner, a double-sided adhesive film 54 is adhered in the adhesive groove, the double-sided adhesive film 54 is provided with two adhesive surfaces, one adhesive surface is adhered on the inner wall of the adhesive groove to be positioned in the adhesive groove, the other adhesive surface is adhered on the backboard 1, thereby the support column 5 is connected to the backboard 1 in an adhesive manner, the thickness of the double-sided adhesive film 54 is larger than the depth of the adhesive groove, the rapid installation between the support column 5 and the backboard 1 is realized, and the operation is simple. The double-sided adhesive sheet 54 is made of 3M heat-resistant adhesive and is durable.

The positioning through grooves 55 are symmetrically formed in two non-adjacent sides of the base 51, the positioning through grooves 55 are U-shaped, the positioning through grooves 55 are horizontally communicated in the direction perpendicular to the back plate 1, one side, deviating from the two positioning through grooves 55, of each positioning through groove is open, correspondingly, positioning protrusions 12 matched with the two positioning through grooves 55 of the support column 5 are arranged on the back plate 1, and the positioning protrusions 12 are in insertion fit with the positioning through grooves 55. A notch for the positioning bulge 12 to pass through is formed on the perforation 32 of the reflecting sheet 3, and the notch is matched with the positioning bulge 12 for the positioning bulge 12 to pass through; the positioning bulge 12 is cylindrical and is arranged perpendicular to the backboard 1; the length of the positioning boss 12 in the axial direction is equal to the sum of the thickness of the reflection sheet 3 and the thickness of the base 51. The base 51 is made of a hard material, so that the rigidity of the connection between the base 51 and the back plate 1 is ensured, and preferably, the base 51 is made of a white PC material (PC material: polycarbonate, a plastic material), which is a thermoplastic resin having toughness, heat resistance, impact resistance, and rigidity completely sufficient for supporting the diffusion plate 63 only for supporting the diffusion plate 63, and has low cost. The thickness of the base 51 is the same as that of the reflective sheet 3, so that the base 51 does not penetrate out of the reflective sheet 3 and does not block light. During installation, firstly, the film on the double-sided adhesive film 54 is torn off, then after the two positioning through grooves 55 on the base 51 of the support column 5 are aligned with the matched positioning protrusions 12, the base 51 is pushed to the back plate 1 along the direction perpendicular to the back plate 1, in the pushing process, the positioning protrusions 12 are gradually inserted into the positioning through grooves 55 until the base 51 abuts against the back plate 1, and the double-sided adhesive film 54 is adhered to the back plate 1 to complete installation between the support column 5 and the back plate 1.

The mounting seat 52 is in a cuboid shape, two opposite sides of one of the mounting seats 52 are respectively connected with the base 51 and the prism 53 to connect the base 51 and the prism 53, the mounting seat 52 can be removed, and the prism 53 is directly mounted on the base 51, so that the effect is unchanged. The material of mount pad 52 is the same with the material of base 51 and makes by the stereoplasm material, preferably adopts white PC material to make, guarantees the mechanical strength of being connected between prism 53 and the base 51, and the thickness of mount pad 52 (i.e. the distance that mount pad 52 was facing away from base 51 to facing to the base 51 direction) is within 5mm, reduces the influence of mount pad 52 to light as far as under the prerequisite that can connect between guaranteeing prism 53 and the base 51, because the thickness of installation degree is less, can not cause great interference to light.

The prism 53 is triangular, preferably, is in the shape of an isosceles acute triangle, and the area and the volume of the acute triangle are smaller than those of a right triangle or an obtuse triangle on the premise of the same height as those of other triangles, so that the illumination which can be influenced by the prism 53 is further reduced, and the light rays irradiated on the prism 53 are reduced. The isosceles triangle shape can make the force of the prism 53 disperse uniformly when supporting the diffusion plate 63, and the triangle is stable, so that the prism 53 can form a stable structure. In this embodiment, the prism 53 is made of a transparent PMMA material (PMMA: polymethyl methacrylate, a transparent plastic material), which is one of the most transparent plastics, and the light can pass therethrough to prevent the light from shining on the prism 53 and creating a dark shadow on the diffusion sheet 62. Preferably, the surface of the prism 53 is subjected to a transverse flat-pressing wire drawing process, the wire drawing interval is 0.12mm, and the transparent prism 53 is prevented from refracting to form a bright spot on the diffusion sheet 62 after light passes through. The angle of the two base angles of the prism 53 was 82.8 °, and the apex angle of the prism 53 was chamfered to be an arc shape to become a rounded angle having a diameter of 2mm. When the light bar 2 is lighted, the light passes through the prisms 53 made of transparent materials, and the surfaces of the prisms 53 are subjected to transverse wiredrawing treatment to generate diffuse reflection, so that the light is prevented from being concentrated and refracted to generate bright spots on the diffusion sheet 62, and uneven brightness is avoided.

Compared with the prior art, the spliced screen back shell and the spliced screen have the advantages that the prisms 53 which are transparent and have the surfaces subjected to transverse wiredrawing are used, so that after the lamp strip 2 is lightened, light rays pass through the prisms 53 to generate diffuse reflection, and the prisms 53 are prevented from generating dark shadows on the diffusion sheet 62, so that the extra cost caused by the additional use of an optical film is saved.

Claims

1. A spliced screen, its characterized in that: comprises a screen main body, a back shell and a small knapsack which are sequentially arranged; the back shell comprises a back plate and a frame group, wherein one side of the frame group is connected to the periphery of the back plate, the backpack is arranged on the back plate, the other opposite side of the frame group is connected to the periphery of the screen main body so that the screen main body and the back plate are arranged on two sides of the frame group, and the back shell is characterized in that: the side wall of the small knapsack is provided with a dustproof heat dissipation hole, and a dustproof cover used for blocking dust perpendicular to the direction of the dustproof heat dissipation hole from passing through the dustproof heat dissipation hole is arranged at the position of the outer side face of the small knapsack, which is located at the dustproof heat dissipation hole.

2. The tiled screen according to claim 1, wherein: the screen main body comprises OC glass, a diffusion sheet and a diffusion plate which are sequentially arranged, and the diffusion sheet is arranged into three sheets.

3. The tiled screen according to claim 2, wherein: the small backpack comprises a shell with a rectangular box-packed structure and a control part arranged in the shell, wherein one side surface of the shell is connected to one side of the back plate, which is opposite to the screen main body, a radiating hole is formed in one side surface of the shell, which is opposite to the back plate, and one end of the radiating hole, which faces inwards, is higher than the highest point of one end of the radiating hole, which faces outwards, is formed in an inclined manner.

4. A tiled screen according to claim 3 wherein: the dustproof heat dissipation holes are respectively formed in the side wall, adjacent to the backboard, of the shell.

5. The tiled screen according to claim 4, wherein: the dust cover is in a quarter cylinder shape, one side of the dust cover, which is hollow in the interior and long, is connected to one side edge of the dust cover with the length of the dust radiating hole so that the dust cover is arranged at the dust radiating hole, and the other side of the dust cover with the length of the dust radiating hole is open so as to be communicated with the inner cavity of the dust cover and the dust radiating hole.

6. The tiled screen according to claim 5, wherein: the width of dustproof louvre is 2mm.

7. The tiled screen according to claim 6, wherein: the shell is connected to two non-adjacent side edges of the backboard, a left fixing strip and a right fixing strip are respectively arranged on the two non-adjacent side edges, a positioning groove is respectively arranged on the left fixing strip and the right fixing strip, and a positioning column used for penetrating through the positioning groove is arranged on the shell.