CN206363706U - LED display unit screen - Google Patents

Abstract

A kind of modular construction, easy to install, cost be low and LED display unit screen of strong antijamming capability.Including several LED display modules and D/C power, LED display modules are installed on base frame by knob tapered end；It is provided with base frame with base and built with the electrical appliance kit of D/C power, LED display modules are installed between base and left beam or right beam；Interface board is set in electrical appliance kit, the interface board has shielding high-frequency signal, reduces the multi-layer PCB board of electromagnetic radiation.Signal receiving module of the present utility model, D/C power between interface board, LED display modules using busbar, faller gill to being connected, and all electric signals and supply current are transmitted by the internal layer of interface board, greatly reduce the usage amount of open-wire line cable.The outer layer up and down of interface board is using ground connection copper foil so that the interface board can be by high frequency transmission signal shielding in interface inner cord, it is to avoid electromagnetic pollution of the high-frequency signal to environment and the signal interference to LED display modules.

Description

LED display unit screen

Technical field

The utility model is related to a kind of LED display, more particularly to one kind nothing between control module and LED display modules The LED display unit screen of open-wire line connection.

Background technology

LED display of the prior art is made up of the casing or framework of display module and undertaking display module, shows mould Group includes PCB and module drain pan with several LED lamp beads, and PCB is arranged in module drain pan, is constituted LED display modules, LED display modules are arranged on the casing or framework；The control system of display screen includes display signal hair Card feed, the HUB plates (also known as interface board) for receiving card, signal multiple-channel output, the interface of HUB plates and LED display modules and power supply it Between it is many connected using winding displacements, power line, be that D/C power, signal receive and control module and some connections that PCB is powered are led Line, installed in being arranged in the electrical appliance kit in the casing or on framework.

Said structure exists following not enough：

1) the communication connection between control system and display module uses cable, causes wiring in disorder.

2) because cable model is a variety of, therefore, its plug connector wide variety used, not brief and cost is high and installs numerous It is trivial.

3) because connection cables at random cause electromagnetic radiation to increase, produced high-frequency interferencing signal largely effects on display The display effect of module.

4) plug connector of wiring at random and polymorphic type, easily makes material cost and cost of labor increase, while imitating installation Rate is reduced.

Utility model content

It is low and anti-interference that the technical problems to be solved in the utility model is to provide a kind of modular construction, easy to install, cost The strong LED display unit screen of ability.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：

LED display unit screen of the present utility model, including several LED display modules and D/C power, it is characterised in that：Institute LED display modules are stated to be installed on the base frame that shape makes by the front of the LED display unit screen by knob tapered end； Provided with least one with base and built with the electrical appliance kit and number only fewer than electrical appliance kit one of the D/C power on base frame Individual vertical beam, the base and vertical beam are connected across between the upper beam of base frame and underbeam, and all bases and vertical beam are uniform and are spaced It is arranged between Zuo Liang and right beam；The LED display modules are installed between the base and left beam, the base and right beam it Between or the base and vertical beam between；Provided with an interface board in each electrical appliance kit, the interface board is with shielding high frequency The composite circuit board of signal, the multi-layer PCB of reduction electromagnetic radiation, provided with two row and by upper on the medial surface of the composite circuit board To lower several A class Simple oxhorn busbars for being used to powering and transmitting signal for LED display modules uniformly arranged, each A classes Simple oxhorn busbar one LED display module of correspondence, the outer end LED corresponding with being arranged on of A class Simple oxhorn busbars shows mould In group and through correspondence base and with the A class Simple oxhorns busbar each other male and female coordinate A class Simple oxhorn faller gill grafting；At this Side by side provided with two B class Simple oxhorn busbars on the lateral surface of interface board, the B classes Simple oxhorn busbar is by receiving on card And connect the interface board and system, control circuit with the B class Simple oxhorns busbar B class Simple oxhorn faller gills that male and female coordinates each other Connection.

The section configuration of the base is that dorsal part is open rectangle, and the interface board is arranged on the intracavity bottom of base, Lid is provided with the opening of base, the D/C power is arranged on the medial surface of the lid.

End cap is provided with the upper and lower ends of the base.

The terminal board for external AC power supplies supply lines access is additionally provided with the medial surface of the lid.

The composite circuit board is formed by least four layers pcb board are stacked, and two outer layers are ground connection copper foil layer, some internal layers up and down For high frequency signal transmission layer.

The upper and lower of A class Simple oxhorn faller gills in each LED display modules respectively sets a solid copper pin, correspondence , respectively set a hollow copper post that solid copper pin adaptation can be made to insert and lock in the upper and lower of the A classes Simple oxhorn busbar.

Several screen locking holes for running through the drain pan are uniformly provided with the periphery of the drain pan of the LED display modules, each The knob tapered end of clamping one in screen locking hole, described knob is screwed using inner hexagon spanner by the front of LED display modules Tapered end can be by the shank of the key holding of the knob tapered end on described base frame, vertical beam or base.

The knob tapered end is made up of integrally formed lock pillar, closing piece and described shank of the key, and the shank of the key is located at lock pillar Inner end, the closing piece is on the outer wall at the middle part of lock pillar, and being equipped between shank of the key and closing piece can be by the knob tapered end The pressing plate that can be relatively rotated in the screen locking hole and with the lock pillar is partially submerged into and is maintained at, being provided with the screen locking hole can Make the chute of the closing piece rotational slide；Being provided with the inner face of described lock pillar outer face and the shank of the key plugs in screwdriver Enter and rotate the screw notch of lock pillar.

The LED display modules are 12, and each LED display modules are rectangle.

It is female provided with A classes Simple oxhorn is socketed between A classes Simple oxhorn busbar medial surface corresponding with the base There is waterproof, moistureproof and dust-proof plastic cement pad on row；Set on the inside of the drain pan of the LED display modules between base frame There is the O-ring seal of annular closing structure.

Several LED display modules are arranged on LED display unit by the utility model using the quick connection structure of knob tapered end On the base frame of screen, the electrical appliance kit for installing D/C power is set on base frame, sets and is folded using multi-layer PCB board in the electrical appliance kit Pile up the composite circuit board constituted.Signal receiving module, D/C power between composite circuit board, LED display modules use busbar, pin Row's connection, all electric signals and supply current are transmitted by two layers of pcb board in composite circuit board, thus, are greatly reduced The usage amount of open-wire line cable.In addition, the outer layer up and down of composite circuit board is using ground connection copper foil, also make it that the composite circuit board can be by High frequency transmission signal is shielded in compound circuit inner cord, it is to avoid high-frequency signal shows mould to the electromagnetic pollution of environment and to LED The signal interference of group.The utility model uses the base frame that section bar makes, and the size that can conveniently adjust LED display unit screen is big Small, various sizes of display screen can be constructed by choosing the section bar of different length, enhanced the flexibility of unit display screen manufacture, carried High production efficiency, reduction material, cost of labor can quickly realize batch production.

Brief description of the drawings

Fig. 1 is the dorsal view (only showing single-row LED display modules) of LED display unit screen of the present utility model.

Fig. 2 is A-A sectional views in Fig. 1.

Fig. 3 is the schematic diagram before LED display modules are assembled with module sealing ring.

Fig. 4 is that LED display modules constitute schematic diagram.

Reference is as follows：

Side bar 1, blocked hole 11, vertical beam 2, buttress brace 21, base 3, box chamber 31, lid 32, terminal board 33, bar Shape hole 34, end cap 35, interface board 4, A class Simple oxhorns busbar 41, reception card 42, B class Simple oxhorns busbar 43, DC electricity Source 5, A class Simple oxhorns faller gill 53, solid copper pin 54, hollow copper post 55, through post hole 56, LED display modules 7, drain pan 71st, screen locking hole 72, step neck 721, chute 722, PCB 73, mask 74, fenestra 75, passageway hole 76, in Empty pin 77, dismounting hole 78, knob tapered end 8, lock pillar 81, closing piece 82, shank of the key 83, pressing plate 84, screw notch 85, LED display unit screen 100, base frame 101, cavity 102, connecting corner yard 103, plastic cement pad 104, O-ring seal 105, Electrical appliance kit 106.

Embodiment

LED display unit screen 100 of the present utility model, changes the connection mode of traditional power supply, signal, using LED Display module 7, directly to inserting connected mode, both saves cost, workload is reduced again, simultaneously as reducing with electrical appliance kit 106 Power line, signal wire, reduce the electromagnetic interference produced in working condition, have afforested environment.

As shown in figure 1, LED display unit screen 100 of the present utility model is by the base frame 101 of rectangle, equipped with base 3 and interior If the electrical appliance kit 106 equipped with D/C power, several vertical beams 2 and the quick inserting mode of use are arranged on the front of base frame 101 Dry LED display module 7 is constituted.

At least one electrical appliance kit 106 and number only vertical beam 2 of 106 few one than electrical appliance kit, institute are provided with base frame 101 State base 3 and vertical beam 2 is connected across between the upper beam of base frame 101 and underbeam, all bases 3 and vertical beam 2 are uniform and are spaced Between Zuo Liang and right beam；The LED display modules 7 are installed between the base 3 and left beam, the base 3 and right beam it Between or the base 3 and vertical beam between.

LED display unit screen 100 of the present utility model includes 12 LED display modules 7, each LED display modules 7 Profile is rectangle, and its size changes according to the spacing between LED lamp bead thereon, and generally it is that the length of side is 320mm Square.

1st, base frame 101 is made by shape extrusion, and the section configuration of the section bar is " L " type, four side bars of base frame 101 " L " shape opening of 1 (using Fig. 1 as reference direction, respectively upper beam, underbeam, Zuo Liang and You Liang) section bar is oppositely arranged, with section bar The horizontal face of " L " shape as base frame 101 front (using Fig. 1 as reference, towards observer one side be the back side, point to figure in The side be front, similarly hereinafter), the vertical plane of " L " shape surrounds that to constitute with both sides be open cavity 102, at four Connecting corner yard 103 is set at the interior angle that side bar 1 connects, can be by institute provided with several in described horizontal face on four side bars 1 State blocked hole 11 of the LED display modules 7 on the base frame 101.

Using the LED display unit screen 100 of section bar base frame 101, its size dimension can very easily pass through cutting-type The length of material realizes that therefore, cost of manufacture can be greatly lowered in it.

The connecting corner yard 103 is that its vertical section is shaped as with certain thickness and by the made corner brace of aluminum alloy material The sector of 1/4 circle, the truss of intensity can be improved in the connecting corner yard 103 provided with a plurality of or multi-disc, and the two of the connecting corner yard 103 Individual right-angle surface connects with the vertical plane of two adjacent edge beams 1, and is fixed it with the side bar 1 connected by screw.Using this The connecting corner yard 103 of structure can make to be accurately positioned, be connected firmly and can guarantee that base frame appearance and size precision is high between side bar 1.

The base frame 101 is simple in construction, cost is low, simple and convenient assembly is quick.

2nd, described vertical beam 2 is also made by section bar, and every vertical beam 2 is provided with described blocked hole 11.The utility model is excellent It is one to select vertical beam 2.

Vertical beam 2 is shallow trench, and the left and right sides edge of the vertical beam 2, which bends inwards 90 °, forms circular arc projection, in vertical beam 2 Set a vertical buttress brace 21 in the middle part of shallow slot bottom, the upper and lower ends of vertical beam 2 and the buttress brace 21 are fastened by screw respectively On described upper beam or underbeam.

The role of vertical beam 2 is：First, playing a part of reinforcement to the base frame 101, the base frame is improved 101 strength and stability, second, the support member to accept LED display modules 7.

3rd, the electrical appliance kit 106 includes base 3 and lid 32, and base 3 is made by section bar, and its section configuration is spill, recessed The opening of shape constitutes a rectangular box chamber 31, the depth of box chamber 31 towards the back side of base frame 101, biside plate and the bottom plate of base 3 Degree, which can ensure that, is fitted into D/C power 5 and other circuit accessories.

The utility model is preferably a vertical beam 2 and two bases 3, two bases 3 be respectively interposed in vertical beam 2 and left beam it Between, between vertical beam 2 and right beam.

Equally, the blocked hole 11 described in several also is provided with the bottom plate of base 3.The base 3 as vertical beam 2, With the strength and stability for improving the base frame 101 and the effect of undertaking LED display modules 7.

Interface board 4 is installed in described box chamber 31, the interface board 4 is the stacked compound circuit constituted of multi-layer PCB board Plate, the utility model selects composite circuit board to be four layers, six layers, eight layers, and the upper and lower are hard circuit board and its outer surface is Copper foil layer is grounded, some internal layers of composite circuit board are FPC or hard circuit board with circuit layout, inner plating Transmitting telecommunication number and source current, lamina rara externa are screen layer, and lamina rara externa can prevent from being radiated in the high-frequency signal that inner plating is transmitted In environment, it is to avoid the pollution to environment and the interference to LED display modules 7.

Electric signal transmission passage and power supply supplying channels use following knot in LED display unit screen 100 of the present utility model Structure is connected：

1st, it is provided with an A class Simple oxhorn faller gill in the left side or right side at the back side of the LED display modules 7 described in each piece 53, the inner of the A class Simple oxhorns faller gill 53 and the PCB 73 of the LED display modules 7 (are pasted with several LED thereon Lamp bead) connect, the outer end of A class Simple oxhorns faller gill 53 is the free end extended to the back side of LED display modules 7.Relative, Being provided with the bottom plate of correspondence base 3 allows the bar hole 34 that the A class Simple oxhorns faller gill 53 is passed through.

Provided with two row and for several bar hole 34 on the bottom plate of base 3, the uniform intervals of bar hole 34 in each column Set.On whole LED display unit screen 100, the LED display modules 7 that the row of the correspondence of base 3 two are adjacent, wherein, it is left A class Simple oxhorns faller gill 53 in each LED display modules 7 in row is located at the right side of the LED display modules 7 (using Fig. 1 as ginseng Examine direction, the left side of figure is a left side, and the right of figure is the right side, similarly hereinafter), the simple ox of A classes in each LED display modules 7 in right row Angular pin row 53 is located at the left side of the LED display modules 7.

2nd, on the positive side for the composite circuit board being installed in the box chamber 31 of base 3, arranged provided with two and uniform from top to bottom Several A class Simple oxhorns busbars 41 arranged, each A classes Simple oxhorn busbar 41 and the A class Simple oxhorn pins described in one Arrange 53 corresponding, the outer end of the A class Simple oxhorns busbar 41 with through the bottom plate and corresponding A class Simple oxhorns faller gill 53 Male and female, which coordinates in grafting, the A class Simple oxhorns busbar 41, is terminated at the node set in interior two layers of composite circuit board.

3rd, side by side provided with two B class Simple oxhorns busbars 43, the simple ox of B classes on the dorsal surface of the composite circuit board The node set in interior two layers of composite circuit board is terminated in angle busbar 43, reception Digital Transmission is provided with its outer end The reception card 42 of signal, the insert row attachment structure coordinated between B class Simple oxhorns busbar 43 and reception card 42 for male and female (is received Card 42 is just set to B class Simple oxhorns faller gill sideways).Card 42 is received by external line with the governor circuit of peripheral hardware to connect.

4th, lid 32, lid 32 and the side walls hinged connection of base 3 are provided with the opening of base 3, lid 32 selects PC materials Material.

It is arranged on for the D/C power 5 that LED display modules 7 are powered on the medial surface of lid 32, on the medial surface of lid 32 The terminal board 33 for external AC power supplies supply lines access is additionally provided with, the terminal board 33 passes through wire and the D/C power phase Connect.

Current supply circuit：Several 5V output ends are provided with D/C power 5, the power supply 5V of interface board is respectively connected to by wire Incoming end, per road power supply one module of correspondence, (each A classes Simple oxhorn busbar is correspondingly connected to one by wire, thus, The D/C power is supplied by A class Simple oxhorns busbar, A class Simple oxhorns faller gill 53 for the PCB 73 of LED display modules 7 Electricity), A class Simple oxhorn busbars are docked with the Simple oxhorn faller gill of LED display modules 7, reach signal, power supply connection.

Equally, the feeder ear for receiving card is connected to corresponding 5V output ends on D/C power also by wire.

Digital data transmission path：The governor circuit of peripheral hardware-outer cloth line-reception card 42-B class Simple oxhorn busbars 43-B classes Simple oxhorn faller gill-composite circuit board inner layer circuit board-A class Simple oxhorn busbar 41-A class Simple oxhorn faller gills The PCB 73 of 53-LED display modules 7.

The lid 32 that the utility model is used is plane cover, in order to prevent aqueous vapor and dust from entering the box chamber of electrical appliance kit 106 In 31, the end cap 35 of electrical appliance kit 106 is provided with the upper and lower ends of the base 3, ensures that electrical appliance kit 106 is in sealed shape with this State.

In order to when mounted, make described A class Simple oxhorns busbar 41 and A class Simple oxhorns faller gill 53 accurate quick right Connect, a solid copper pin 54 is respectively set in the upper and lower of each A classes Simple oxhorn faller gill 53, it is corresponding, in the A classes Simple oxhorn The upper and lower of busbar 41 respectively sets a hollow copper post 55 that the adaptation of solid copper pin 54 can be made to insert and lock, meanwhile, on bottom plate The upper and lower of described bar hole 34 also sets the through post hole 56 that can pass through solid copper pin 54.

LED display modules 7 described in the utility model are by the drain pan 71 through being once molded and being made for plastic cement material, patch PCB 73 equipped with several LED lamp beads and on the front of PCB 73 play rain-proof, it is dust-proof and can improve The mask 74 of contrast is constituted.

1st, the front of the drain pan 71 is flat face, its back side be provided with some or piece and be arcwall face truss frame, Run through the screen locking hole 72 of the drain pan 71, the preferred screen locking hole 72 of the utility model provided with several in four peripheral frames of drain pan 71 For 10, four corners of drain pan 71 respectively set one, up and down the middle part of short frame respectively set and respectively set two on one and left and right long margin frame It is individual.

One knob tapered end 8 is installed in each screen locking hole 72, knob tapered end 8 is by integrally formed cylindrical lock pillar 81st, closing piece 82, shank of the key 83 and pressing plate 84 are constituted, and the inner end that shank of the key 83 is located at lock pillar 81 (points to the outermost at the back side of drain pan 71 End), the closing piece 82 is on the outer wall at the middle part of lock pillar 81, and the holding of pressing plate 84 is between shank of the key 83 and closing piece 82 and can Relatively rotated with lock pillar 81, the vertical section of pressing plate 84 is shaped as the rhombus of rounding, it is diagonal at two of the pressing plate 84 on set There is screw hole, the pressing plate 84 can be fixed on by screw on described screen locking hole 72, so that by the upper locking piece 82 of knob tapered end 8 Being partially submerged into and being maintained in the screen locking hole 72 to the outer face of lock pillar 81 (i.e. towards the positive end of drain pan 71).

It is corresponding, the step neck 721 that is adapted to provided with shape with the pressing plate 84 in the screen locking hole 72 and it can make The chute 722 of the rotational slide wherein of closing piece 82, in the described outer face of lock pillar 81 and/or the inner face of the shank of the key 83 Being provided with makes the screw notch 85 of screwdriver insertion and the rotatable lock pillar 81.

It is corresponding, the shape for the blocked hole 11 being arranged on described base frame 101, vertical beam 2 and base 3 with it is described The shape adaptation of shank of the key 83, after shank of the key 83 inserts corresponding blocked hole 11 rotate an angle can be by the holding of shank of the key 83 in base On the bottom plate of frame frame 101, vertical beam 2 or base 3.

Equally, it is corresponding, it is provided with described PCB 73 and mask 74 with the corresponding position in the screen locking hole 72 The passageway hole 76 of the end insertion of specific purpose tool (such as screwdriver, batch, bar or inner hexagon spanner) can be allowed.

2nd, in the PCB 73, described A class Simple oxhorns faller gill 53 set to the left or right side central position Put, several the described passageway holes 76 being arranged on are the through hole through the PCB 73.

3rd, the mask 74 is made through being once molded by plastic cement material, and which is provided with several can wear LED lamp bead light The fenestra 75 crossed, it is special provided with that can allow with the corresponding position in the passageway hole of the part in PCB 73 76 on mask 74 The dismounting hole 78 inserted with the end of instrument.

Several hollow pins 77 being in the form of a column are provided with the back side of mask 74, the hollow pin 77 is logical with cannulated threaded Road, hollow pin 77 extends to outside the dorsal part of mask 74, and the front end of hollow pin 77, which can be inserted into, is arranged on LED display modules 7 In the exit orifice of short column on the front of drain pan 71, passed through using screw by the back side of drain pan 71 hollow on short column and hollow pin 77 Screw channel tightens together mask 74, PCB 73 with drain pan 71.

It is provided with the upper limb of positive each fenestra 75 of mask 74 and leads rain rill and the edge that keeps off the rain, the edge that keeps off the rain is stepped corrugations Shape, the edge that keeps off the rain may also function as the effect for scattering out ambient light, and the luminous contrast of the LED display modules 7 is improved with profit.

After the knob tapered end 8 is installed in screen locking hole 72, worn using screwdriver by the front of LED display modules 7 Described dismounting hole 78, passageway hole 76 are crossed, the holding of shank of the key 83 of the knob tapered end 8 can be existed by screwing described knob tapered end 8 On described base frame 101, vertical beam 2 or base 3, thus, LED display modules 7 are assembled on described base frame 101.

Further improve is to be provided with to be socketed in A between the A classes Simple oxhorn busbar 41 and the medial surface of the base 3 There is waterproof, moistureproof and dust-proof plastic cement pad 104 on class Simple oxhorn busbar 41；In the drain pan of the LED display modules 7 O-ring seal 105 provided with annular closing structure between 71 inner sides and base frame 101.

Claims (10)

1. a kind of LED display unit screen, including several LED display modules (7) and D/C power, it is characterised in that：The LED shows Show that module (7) is installed on the pedestal that shape makes by knob tapered end (8) by the front of the LED display unit screen (100) On frame (101)；Provided with least one with base (3) and built with the electrical appliance kit of the D/C power on base frame (101) (106) and number only few one than electrical appliance kit (106) vertical beam (2), the base (3) and vertical beam (2) are connected across base frame (101) between upper beam and underbeam, all bases (3) and vertical beam (2) are uniform and are spaced between Zuo Liang and right beam；It is described LED display modules (7) are installed between the base (3) and left beam, between the base (3) and right beam or the base (3) between vertical beam；Provided with an interface board (4) in each electrical appliance kit (106), the interface board (4) is with shielding high frequency The composite circuit board of signal, the multi-layer PCB of reduction electromagnetic radiation, provided with two row and by upper on the medial surface of the composite circuit board To lower several A class Simple oxhorn busbars (41) for being used to signal is powered and transmitted for LED display modules (7) uniformly arranged, One LED display module (7) of each A class Simple oxhorn busbars (41) correspondence, the outer end of A class Simple oxhorn busbars (41) and setting On corresponding LED display modules (7) and through correspondence base (3) and male and female is matched somebody with somebody each other with the A class Simple oxhorn busbars (41) A class Simple oxhorn faller gill (53) grafting of conjunction；It is female provided with two B classes Simple oxhorns side by side on the lateral surface of the interface board (4) Arrange (43), the B classes Simple oxhorn busbar (43) by receive card (42) on and with the B class Simple oxhorn busbars (43) each other The B class Simple oxhorn faller gills that male and female coordinates connect the connection of the interface board (4) and system, control circuit.

2. LED display unit screen according to claim 1, it is characterised in that：The section configuration of the base (3) is dorsal part For open rectangle, the interface board (4) is arranged on the intracavity bottom of base (3), and lid is provided with the opening of base (3) (32), the D/C power (5) is arranged on the medial surface of the lid (32).

3. LED display unit screen according to claim 2, it is characterised in that：It is provided with the upper and lower ends of the base (3) End cap (35).

4. LED display unit screen according to claim 2, it is characterised in that：On the medial surface of the lid (32) also Provided with the terminal board (33) for external AC power supplies supply lines access.

5. LED display unit screen according to claim 1, it is characterised in that：The composite circuit board is by least four layers PCB Plate is stacked to be formed, and two outer layers are ground connection copper foil layer up and down, and some internal layers are high frequency signal transmission layer.

6. LED display unit screen according to claim 1, it is characterised in that：On each LED display modules (7) The upper and lowers of A class Simple oxhorn faller gills (53) respectively set a solid copper pin (54), it is corresponding, it is female in the A classes Simple oxhorn The upper and lower of row (41) respectively sets a hollow copper post (55) that solid copper pin (54) adaptation can be made to insert and lock.

7. LED display unit screen according to claim 1, it is characterised in that：In the drain pan of the LED display modules (7) (71) periphery is uniformly provided with the screen locking hole (72) that several run through the drain pan (71), the clamping one in each screen locking hole (72) The knob tapered end (8), described knob tapered end (8) is screwed using inner hexagon spanner by the front of LED display modules (7) By shank of the key (83) holding of the knob tapered end (8) on described base frame (101), vertical beam (2) or base (3).

8. LED display unit screen according to claim 7, it is characterised in that：The knob tapered end (8) is by integrally formed Lock pillar (81), closing piece (82) and described shank of the key (83) are constituted, and the shank of the key (83) is located at the inner end of lock pillar (81), the lock Block (82) is on the outer wall at the middle part of lock pillar (81), and being equipped between shank of the key (83) and closing piece (82) can be by the knob tapered end (8) the pressing plate (84) for being partially submerged into and being maintained in the screen locking hole (72) and being relatively rotated with the lock pillar (81), The chute (722) of the closing piece (82) rotational slide can be made by being provided with the screen locking hole (72)；In described lock pillar (81) outer end The inner face of face and the shank of the key (83), which is provided with, to be inserted screwdriver and rotates the screw notch (85) of lock pillar (81).

9. LED display unit screen according to claim 2, it is characterised in that：The LED display modules (7) are 12, often Individual LED display modules (7) are rectangle.

10. LED display unit screen according to claim 1, it is characterised in that：In the A classes Simple oxhorn busbar (41) There is waterproof, moistureproof and anti-provided with being socketed on A class Simple oxhorn busbars (41) between medial surface corresponding with the base (3) The plastic cement pad (104) of dirt；Provided with annular between base frame (101) on the inside of the drain pan (71) of the LED display modules (7) The O-ring seal (105) of closing structure.