CN102682669A - Light-emitting diode (LED) display screen and LED display device - Google Patents

Abstract

The invention provides a light-emitting diode (LED) display screen and an LED display device and belongs to the technical field of LED display. The LED display screen comprises a mask, a lamp panel, a heat conduction base plate, a rear panel, a control panel and a casing, wherein the mask, the lamp panel, the heat conduction base plate and the rear panel are sequentially overlapped, and the casing is covered on the control panel and fixed on the rear panel. The LED display device is formed by connecting a plurality of the LED display screens by the aid of connecting pieces and connecting piece groups. According to the light-emitting diode (LED) display screen and the LED display device, a boss is arranged on the surface of the mask, so that LEDs on the lamp panel are well protected, less light is shielded, and visual angles of the LEDs are broadened; besides, the heat conduction base plate is added, so that even if a chip is protruded on the rear surface of the lamp panel, hole punching processing is not required to be performed to the rear panel, and the production efficiency of products is greatly increased; and a radiating hole and a radiating port are arranged on a rear casing, the whole casing is ventilated, accordingly, air circulation inside and outside the casing is facilitated, the radiating effect is enhanced, and the control panel is subjected to waterproof treatment in consideration of waterproof issues.

Description

LED display and LED display device

Technical field

The present invention relates to LED and show the field, refer in particular to a kind of LED screen and LED display device.

Background technology

In recent years; The application of the large area LED display device that LED display is formed obtains fast development; LED shows the sign that has become the urban information modernization construction; Along with the development of information digitalization and display technique, places such as bank, airport, station, securities trading market, customs, stadium and stage have been widely applied to.

Yet existing LED show development just meet with such as: the demand of big display area, the demand of abominable applied environment and the demand of high production capacity, these have constituted bottleneck to further developing of LED display undoubtedly.The demand difficult point is mainly following under the segmentation:

1, is accompanied by the expansion of LED display area; Adopt which kind of efficiently assembly structure be a great problem; Contrast the structure that the similar LED display module of present industry is used to link to each other, industry adopts the limit lock construction, particularly for the ultrathin LED display screen module, also need be arranged at display unit specially with wide frame in order to connect; Wasted lot of materials undoubtedly; Increased the cost and the volume of single led display screen module product, the problem that general in addition connection bearing accuracy is low is also perplexing in the industry always, and therefore existing syndeton comparatively is unfavorable for the rental service use.

And how in time dispelling the heat also particularly importantly for large-area LED display, existing all kinds of LED displays all need be provided with corresponding heat abstractor, make a general survey of present industry like product; Many employing iron casees or aluminium body structure are as the back cover of LED display, and more it considers and adopt above-mentioned body structure, owing to need take into account waterproof problem; The back cover area is big, volume is big; And can in casing, lay fan, realize heat radiation through the forced-ventilated mode, volume is big, the problem of Heavy Weight but the back cover of so big metal quality exists; Make the LED display monomer very heavy, use and difficult installation.In the metal back cover, add fan in the traditional structure in addition, the big rotating speed of fan power is high, also has the big problem of noise.

2, abominable applied environment makes that product itself can be windproof, can't after at interval the lamp bar being set, influence the suitable effects that spectators watch on this basis, and high production capacity then requires LED on structure, production efficiency to be optimized design.And the both sides up and down of through hole are provided with the fin that is raised in face shield that horizontal direction or the left and right sides are provided with vertical direction on the face shield of existing LED display, and this fin is used to protect LED lamp pearl.LED shows that module is generally vertically or level is installed; When watching display screen, spectators can shape have a certain degree; And the fin that is raised in face shield is higher than LED lamp pearl, thereby when spectators watch LED to show module, can block the light that LED lamp pearl sends, and influences the viewing effect of spectators to display screen.

3, be mostly that the lamp plate that directly will show module directly is fixed on the metal backing in the existing display screen structure, make things convenient for distributing of its heat though can make lamp plate circuit behind directly contact, owing on the circuit chip components and parts protuberate is arranged with metal backing; Just must be on metal backing correspondence position button hole; Thereby can lamp plate be fixed on the metal backing, so do, the process-cycle of detaining the hole first is long; And the technological requirement machining precision is high, is unfavorable for that LED shows the production in enormous quantities of module.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective, a kind of visual effect is good, heat dispersion is good and be easy to produce, assemble LED display and LED display device are provided.

The objective of the invention is to realize like this:

A kind of LED display, it comprises face shield, lamp plate, heat conduction backing plate, backboard, control panel and housing, and said face shield, lamp plate, heat conduction backing plate, backboard are superimposed successively, and it is fixing on backboard that said case cover said control panel; Said lamp plate is in being provided with LED lamp pearl towards face shield one side, and said lamp plate is in the chip that is provided with protuberate towards heat conduction backing plate one side; Said face shield covers in outside the lamp plate, which is provided with the through hole of the LED lamp pearl that is used for ccontaining lamp plate, between the through hole on OFP surface, is provided with boss; Said heat conductive pad plate holder is located between said lamp plate and the said backboard, and the heat conduction backing plate is processed by Heat Conduction Material, and chip of corresponding lamp plate is provided with the device slot to make way on it; Said control panel surface is provided with control chip, and the surface of said control panel is provided with waterproof membrane and glue-line from inside to outside successively, and said waterproof membrane wraps up the chip on said control panel surface, and said glue-line is wrapped in outside the waterproof membrane; Said surface of shell is provided with air outlet opening, louvre, and housing sidewall is provided with thermovent, and said louvre is corresponding in twos to be arranged on two relative sidewalls of housing.

Further, the upper surface of the boss on said face shield surface is higher than the LED lamp pearl that is contained in the said through hole; Said boss be shaped as half elliptic or truncated cone-shaped or cylindrical or multi-edge column-shaped.

Further, said heat conduction backing plate periphery/edge is provided with the Soft Roll limit; The heat conductive pad panel edges also is provided with face shield slot to make way is installed.

Further, said heat conduction backing plate is that heat-conducting plastic is processed, and said Soft Roll limit is a flexible plastic; Said backing plate and Soft Roll limit are that double-shot moulding is one-body molded.

Further, said control panel surface forms glue-line by gum dipping process, and the thickness of said glue-line is 0.3mm-0.7mm; Said waterproof membrane forms through the vacuum coating equipment plated film.

Further, said housing sidewall also is provided with the connector mounting hole; The thermovent of said housing comprises first thermovent and second thermovent, and the said first thermovent along continuous straight runs is arranged on the relative two side of housing, and said second thermovent vertically is arranged on the relative two side of housing.

Further, be provided with fan containing cavity and/or power supply containing cavity in the housing; Housing is provided with air outlet opening in the chamber wall of the fan containing cavity of correspondence, and wall is provided with louvre in the chamber of corresponding power containing cavity.

Further, said housing is provided with handle, and four corners of housing are provided with foot pad, are provided with the arc linkage section between said foot pad and form said handle.

The present invention also provides a kind of LED display device, and it comprises web member, web member group and a plurality of like any described LED display of claim 1-8; Said web member group is arranged at the edge of the backboard of LED display, and the web member group comprises register pin and mount pad; Said mount pad is provided with connecting thread, and said register pin is arranged at the mount pad side; Said web member comprises the web member body, is provided with the bolt mounting groove in web member body middle part, has extended to form Connection Block around the web member body; Said Connection Block is provided with through hole, the adaptive breaker bolt that is socketed with of through hole, and the Connection Block body also is provided with the location shrinkage pool in the through hole side; LED display is spliced to form said LED display device through web member and cooperating of web member group; The be spirally connected connecting thread of mount pad of web member group of the breaker bolt correspondence of said web member, the location shrinkage pool of the register pin of said web member group and said web member body is adaptive spacing.

Further; The Connection Block side of said web member body is provided with at least two location shrinkage pools; The through hole of Connection Block is step-like; A less end and the breaker bolt of size is suitable, is provided with groove between the Connection Block of web member body and is connected with reinforcement, and the bolt mounting groove of web member body is elongated; Said breaker bolt is provided with the stop bit boss in the end that screw thread is set, and breaker bolt is limited in the through hole of Connection Block through this stop bit boss socket;

Said mount pad sidepiece is provided with at least two register pins; The back plate edges of said LED display is provided with step-like through hole; Said mount pad comprises block end and link; Link passes said step-like through hole, and said block end is spacing by the step of step-like through hole, and said connecting thread is set on the said link; Said connecting thread is an external thread, and corresponding link external thread is provided with the nut locking; Said register pin comprises pin and bolt, and corresponding is provided with through hole in back plate edges, and said pin is set in the through hole from backboard through hole one side, and said bolt is by the opposite side fixing pin that is spirally connected; Said dowel ends is the chamfering section, and the middle part is the column positioning section, and afterbody is the socket section, and said socket section outside dimension is less than column positioning section outside dimension, and said bolt is bolted in the pin socket section.

Beneficial effect of the present invention has been to adopt the surface to have the face shield of boss; Can protect the LED lamp pearl on the lamp plate better, avoid it to be damaged by collision, reduce blocking again the light of LED lamp pearl emission; Increase the visible angle of LED, improved the satisfaction that spectators watch.Added the heat conduction backing plate in addition, handled, improved production efficiency of products greatly thereby need not backboard to be buckled the hole because of chip protruding behind the lamp plate.And on back cover, be provided with louvre; Also be provided with thermovent simultaneously in the bottom periphery of housing; Housing integral body is pass-through type, helps the inside and outside cross-ventilation of housing, strengthens radiating effect; Consider that simultaneously waterproof problem done water-proofing treatment to control panel, do not use fan also can satisfy radiating requirements even make.

Description of drawings

Below in conjunction with detailed description of the drawings concrete structure of the present invention

Fig. 1 is the structure explosive view of LED display of the present invention;

Fig. 2 is the structure explosive view of the demonstration module of LED display of the present invention;

Fig. 3 is the heat conductive pad plate structure synoptic diagram of LED display of the present invention;

Fig. 4 is the face mask structure synoptic diagram of LED display of the present invention;

Fig. 5 is the heat conduction backing plate partial structurtes cut-open view of LED display of the present invention;

Fig. 6 is the face shield partial structurtes cut-open view of LED display of the present invention;

Fig. 7 is the control panel structure cut-open view of LED display of the present invention;

Fig. 8 is the shell structure synoptic diagram of LED display of the present invention;

Fig. 9 is the housing vertical view of LED display of the present invention;

Figure 10 is the case side view of LED display of the present invention;

Figure 11 is the structure rear view of single led display screen in the LED display device of the present invention;

Figure 12 is the backboard side view of single led display screen in the LED display device of the present invention;

Figure 13 is a local structure for amplifying synoptic diagram among Figure 12;

Figure 14 is LED display device combination synoptic diagram of the present invention;

Figure 15 is the web member structural representation of LED display device of the present invention.

2, face shield; 2-1, through hole; 2-2, boss;

3, backboard; 3-1, web member group; 3-2, register pin; 3-3, pin; 3-4, bolt; 3-5, chamfering section; 3-6, column positioning section; 3-7, mount pad; 3-8, external thread; 3-9, nut;

4, web member body; 4-1, Connection Block; 4-2, bolt mounting groove; 4-3, locating slot; 4-4, breaker bolt; 4-5, stop bit boss; 4-6, reinforcement;

5, control panel; 5-1, waterproof membrane; 5-2, glue-line;

7, lamp plate; 7-1, chip;

8, heat conduction backing plate; 8-1, device slot to make way; 8-2, face shield are installed slot to make way; 8-3, reference column; 8-4 Soft Roll limit

9, housing; 9-1, louvre; 9-2, handle; 9-3, air outlet opening; 9-4, connector mounting hole; 9-5, first thermovent; 9-6, second thermovent.

Embodiment

By specifying technology contents of the present invention, structural attitude, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

See also Fig. 1, the present invention relates to a kind of LED display, it comprises face shield 2, lamp plate 7, heat conduction backing plate 8, backboard 3, control panel 5 and housing 9.Wherein face shield 2, lamp plate 7, heat conduction backing plate 8, the superimposed successively composition of backboard 3 show module, and it is fixing on backboard 3 that housing 9 is then covering said control panel 5.

Like Fig. 2, LED shows superimposed successively face shield 2, lamp plate 7, heat conduction backing plate 8 and the backboard 3 of module.

Wherein, lamp plate 7 is intended for face shield 2 one sides and is provided with LED lamp pearl, and corresponding face shield 2 is provided with through hole 2-1, and face shield 2 covers in outside the lamp plate 7, and ccontaining said LED lamp pearl plays the purpose of protection LED lamp pearl among its through hole 2-1.

The opposite side of lamp plate 7; Be corresponding surface then is provided with chip 7-1 from protuberate to heat conduction backing plate 8 one sides; Corresponding heat conduction backing plate 8 is provided with device slot to make way 8-1, and heat conduction backing plate 8 integral body are processed by Heat Conduction Material, like this can be effectively with the heat transferred of lamp plate 7 to metal backing 3; Can not make the temperature of lamp plate 7 too high; Play the heat conduction and heat radiation effect, heat conduction backing plate 8 is located between lamp plate 7 and the backboard 3, between heat conduction backing plate 8 surface and lamp plate 7, reach with backboard 3 between corresponding being provided be used for spacing pilot hole/reference column 8-3.

Referring to Fig. 3, Fig. 5; As an embodiment, the heat conduction backing plate 8 in this patent comprises opposing first surface and second surface, in order to guarantee being connected of heat conduction backing plate 8 and lamp plate 7, backboard 3; Heat conduction backing plate 8 is provided with reference column in the corresponding lamp plate 7 of first surface; Corresponding lamp plate 7 is provided with hole clipping, and the same corresponding backboard 3 of the second surface of heat conduction backing plate 8 is provided with reference column 8-3, on the backboard 3 then correspondence be provided with pilot hole.The device slot to make way 8-1 thickness on these external heat conductive pad plate 8 surfaces should be not less than the maximum height that lamp plate 7 protrudes in element (normally chip 7-1), thereby can avoid the process-cycle in original technology dorsulum 3 processing button holes.

Further, the periphery/edge of heat conduction backing plate 8 is provided with Soft Roll limit 8-4, best; Around heat conduction backing plate 8, be provided with Soft Roll limit 8-4; And heat conduction backing plate 8 integral body can adopt heat-conducting plastic to process, and said Soft Roll limit 8-4 then adopts flexible plastic/flexible glue, and heat conduction backing plate 8 can be processed through double-shot moulding is one-body molded with Soft Roll limit 8-4 thus; Production efficiency is high, has shortened production man-hour greatly.In addition, also can face shield installation slot to make way 8-2, the installation of Convenient mask 2 be set correspondence at the edge of heat conduction backing plate 8.

Referring to Fig. 4, Fig. 6, as an embodiment, the through hole 2-1 of the face shield 2 in this patent is that LED lamp pearl is the dot matrix arrangement on the corresponding lamp plate 7; And between through hole 2-1, also be provided with boss 2-2; The shape of boss 2-2 can be half elliptic or truncated cone-shaped or cylindrical or multi-edge column-shaped, best, the upper surface of boss 2-2 is raised in said face shield 2 and is higher than the LED lamp pearl that is contained in the said through hole 2-1; To protect LED lamp pearl better; Avoid it to be damaged by collision, and because boss 2-2 is four endpoint locations outside that only is arranged on through hole 2-1, thereby reduced blocking the light of LED lamp pearl emission; Increased visible angle, improved the satisfaction that spectators watch LED display.

Be control panel 5 structures that this patent provided like Fig. 7, the surface of control panel 5 is provided with control chip, and the surface of said control panel 5 is provided with transparent waterproof membrane 5-1 and glue-line 5-2 from inside to outside successively.

Directly carry out plated film and impregnation on the control panel 5 and handle, form waterproof membrane 5-1 and glue-line 5-2, make that control panel 5 can waterproof; Waterproof membrane 5-1 at first is set, and impregnation again forms glue-line 5-2 thereafter; Make waterproof effect more lasting, make control panel directly to contact with water.The thickness of preferable said glue-line 5-2 is 0.3-0.7mm, through long term studies and test, and best glue-line 5-2 thickness 0.5mm.

The process of above-mentioned waterproof is specific as follows:

Step 1. is that control chip is arranged on the control panel with IC at first, and control panel is used for control panel is controlled, and afterwards control panel is tested, and keeps in repair as defective, like the qualified next step that carries out;

Paste waterproof membrane 5-1 on step 2. control panel, the mode of pad pasting is a variety of, in the present embodiment, adopts vacuum coating equipment directly to carry out plated film, and the plated film time is 4-8 hour;

Control panel behind step 3. plated film carries out waterproof test, if test failure, with carry out step 2 again after the removing of the waterproof membrane 5-1 on it, if test passes gets into step 4;

The control panel that step 4. will plate waterproof membrane 5-1 carries out impregnation, and the thickness of impregnation is 0.3-0.7mm, and preferred thickness is 0.5mm, has strengthened the stability of waterproof membrane 5-1 and the waterproof effect of control panel.

Impregnation in the step 4 can adopt impregnation twice, and impregnation is generally continuous impregnation twice, and the impregnation time is 20 seconds, and impregnation is once just crossed baking oven simultaneously, and oven temperatures can be arranged on 70-80 degree centigrade, after baking, reaches rapid solidification.

After handling, control panel can directly contact with water, does not worry having influence on the inner circuit structure of control panel.

As further improvement; Also can be to forming all circuit boards of LED display, as lamp plate, drive plate, control panel and power supply etc. shine easily into the accessory of short circuit equal plated film, impregnation and encapsulating handle wherein lamp plate, control panel and control panel employing plated film and impregnation processing; And power supply adopts encapsulating to handle; Make the whole LED display screen directly to contact, and do not need casing, the requirement that reaches gentlier, more approaches with water.

Consult the housing 9 of Fig. 8-10 for adopting in this patent, housing 9 covers in the LED display rear portion, and is different with the closed back cover of common outdoor LED display; The surface of this patent middle shell 9 is provided with louvre 9-1; Its sidewall then also is provided with thermovent, and promptly housing 9 integral body are pass-through types, helps the inside and outside cross-ventilation of housing 9; Strengthen radiating effect; Certainly because the design of the pass-through type of housing 9 must make the device that is covered with in it be exposed to the outside, particularly moist, the problem of raining, so during the whole practical application of product in it device need as the above-mentioned water-proofing treatment of doing.

Common; Need be covered with the main devices of LED display in the housing 9, comprise control panel 5, power module etc., and also need the inside and outside wire rod of fixed telecommunication LED display simultaneously; Therefore in housing 9, can be provided with the power supply containing cavity usually; According to also the fan containing cavity can being set in some housing 9 of heat radiation needs, and the louvre 9-1 in this patent is arranged on the chamber wall of housing 9 corresponding power containing cavities, and housing is provided with air outlet opening 9-3 in the chamber wall of the fan containing cavity of correspondence.Thus, the fan that is arranged at the Hot-air fan containing cavity can adopt common fan leaf type, also can adopt forced-ventilated fan, thereby sees off from the thermovent of housing 9 sidewalls through sucking wind, realizes the quick heat radiating purpose.

As above-mentioned, be provided with connector mounting hole 9-4 at housing 9 sidewalls, as an embodiment; More excellent, housing 9 is equipped with thermovent in relative two side, and optimum thermovent further is divided into the first thermovent 9-5 and the second thermovent 9-6; Like Fig. 2, wherein the first thermovent 9-5 along continuous straight runs is arranged on the relative and arranged on left and right sides wall of housing 9, like Fig. 3 in twos; And the second thermovent 9-6 vertically is arranged on the relative upper and lower two side of housing 9 in twos; Can make in the heat radiation process that thus wind runs through whole housing 9, prolong the heat absorption path, strengthen radiating effect.

As another embodiment; On housing 9, also further be provided with handle, in this programme, housing 9 is provided with foot pad in four corners on surface; Be provided with the arc linkage section between said foot pad and form said handle 9-2; So the handle of the structure product that is first is programmable on the whole more attractive in appearance, and handle is in housing 9 one integrated mass, provides one to control the effect of mentioning the LED display handle part after also can making housing 9 be installed on the LED display simultaneously.

The invention still further relates to a kind of LED display device, like Figure 11-13, it comprises the LED display of web member body 4, web member group 3-1 and a plurality of as above-mentioned structure, referring to Figure 14.In order to realize the splicing of a plurality of LED displays, need establish web member group 3-1 at the edge of above-mentioned backboard 3, preferable, the edge that the needs of backboard connect the backboard 3 of adjacent LED display screen module all can be provided with web member group 3-1.For example when the backboard of LED display module 3 is square like Fig. 4, web member group 3-1 is arranged on four angles of backboard, thus again through web member body 4 of cooperation can be from four limits the backboard 3 of adjacent four the LED display modules of connection.

Concrete, the web member group 3-1 structure among the present invention is referring to Figure 12,13, and it comprises register pin 3-2 and mount pad 3-7.Wherein mount pad 3-7 is provided with connecting thread; Also be provided with register pin 3-2 at mount pad 3-7 side; Above-mentioned mount pad 3-7 and register pin 3-2 can with cooperate such as breaker bolt 4-4 on the Connection Block 4-1 of web member body 4 shown in Figure 15 and locating slot 4-3, realize to connect.Wherein register pin 3-2 can play provides location, guiding and spacing effect, preferable, and mount pad 3-7 side is provided with at least two register pin 3-2, thereby also can play the in relative rotation effect of web member body 4 in the backboard 3 of LED display module that prevent.

As an embodiment; The mounting structure of above-mentioned mount pad 3-7 is: backboard 3 edges of LED display module are provided with step-like through hole; Said mount pad 3-7 comprises block end and link, and link passes said step-like through hole, and said block end is spacing by the step of step-like through hole; Said connecting thread is set on the said link, and said connecting thread is that external thread 3-8 link external thread is provided with nut 3-9.

Equally; As an embodiment, the mounting structure of above-mentioned register pin 3-2 is: it comprises pin 3-3 and bolt 3-4, and corresponding is provided with through hole equally in back plate edges; Pin 3-3 is set in the through hole from backboard through hole one side, and said bolt 3-4 is by the opposite side fixing pin that is spirally connected.

Peg graft for ease in addition, preferable, the end of above-mentioned pin 3-3 is chamfering section 3-5, and the middle part is column positioning section 3-6, and afterbody is the socket section, and said socket section outside dimension is less than column positioning section 3-6 outside dimension.

Referring to Figure 15, the middle part of concrete above-mentioned web member body 4 is provided with bolt mounting groove 4-2, and an outer bolt can be fixed in whole web member body 4 such as positions such as metopes through this bolt mounting groove 4-2.And having extended to form Connection Block 4-1 around the web member body 4, the corresponding backboard 3 that connects a LED display module of each Connection Block 4-1 is connected with reinforcement 4-6 between the Connection Block 4-1.Further; Consider prevent this web member body 4 without the time breaker bolt 4-4 on the Connection Block 4-1 be unlikely to lose; Also can be provided with stop bit boss 4-5, thereby breaker bolt 4-4 can be limited in the through hole of Connection Block 4-1 through this stop bit boss 4-5 socket in the end that breaker bolt 4-4 is provided with screw thread.Through said structure, the backboard 3 of LED display module of the present invention can be accomplished installation such as the web member body 4 of structure here fast and easily through one.

The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (10)

1. LED display, it is characterized in that: it comprises face shield, lamp plate, heat conduction backing plate, backboard, control panel and housing, and said face shield, lamp plate, heat conduction backing plate, backboard are superimposed successively, and it is fixing on backboard that said case cover said control panel;

Said lamp plate is in being provided with LED lamp pearl towards face shield one side, and said lamp plate is in the chip that is provided with protuberate towards heat conduction backing plate one side;

Said face shield covers in outside the lamp plate, which is provided with the through hole of the LED lamp pearl that is used for ccontaining lamp plate, between the through hole on OFP surface, is provided with boss;

Said heat conductive pad plate holder is located between said lamp plate and the said backboard, and the heat conduction backing plate is processed by Heat Conduction Material, and chip of corresponding lamp plate is provided with the device slot to make way on it;

Said control panel surface is provided with control chip, and the surface of said control panel is provided with waterproof membrane and glue-line from inside to outside successively, and said waterproof membrane wraps up the chip on said control panel surface, and said glue-line is wrapped in outside the waterproof membrane;

Said surface of shell is provided with air outlet opening, louvre, and housing sidewall is provided with thermovent, and said louvre is corresponding in twos to be arranged on two relative sidewalls of housing.

2. LED display as claimed in claim 1 is characterized in that: the upper surface of the boss on said face shield surface is higher than the LED lamp pearl that is contained in the said through hole; Said boss be shaped as half elliptic or truncated cone-shaped or cylindrical or multi-edge column-shaped.

3. LED display as claimed in claim 1 is characterized in that: said heat conduction backing plate periphery/edge is provided with the Soft Roll limit; The heat conductive pad panel edges also is provided with face shield slot to make way is installed.

4. LED display as claimed in claim 3 is characterized in that: said heat conduction backing plate is that heat-conducting plastic is processed, and said Soft Roll limit is a flexible plastic; Said backing plate and Soft Roll limit are that double-shot moulding is one-body molded.

5. LED display as claimed in claim 1 is characterized in that: said control panel surface forms glue-line by gum dipping process, and the thickness of said glue-line is 0.3mm-0.7mm; Said waterproof membrane forms through the vacuum coating equipment plated film.

6. LED display as claimed in claim 1 is characterized in that: said housing sidewall also is provided with the connector mounting hole; The thermovent of said housing comprises first thermovent and second thermovent, and the said first thermovent along continuous straight runs is arranged on the relative two side of housing, and said second thermovent vertically is arranged on the relative two side of housing.

7. LED display as claimed in claim 6 is characterized in that: be provided with fan containing cavity and/or power supply containing cavity in the housing; Housing is provided with air outlet opening in the chamber wall of the fan containing cavity of correspondence, and wall is provided with louvre in the chamber of corresponding power containing cavity.

8. like claim 1 or 6 or 7 described LED displays, it is characterized in that: said housing is provided with handle, and four corners of housing are provided with foot pad, are provided with the arc linkage section between said foot pad and form said handle.

9. LED display device, it is characterized in that: it comprises web member, web member group and a plurality of like any described LED display of claim 1-8;

Said web member group is arranged at the edge of the backboard of LED display, and the web member group comprises register pin and mount pad; Said mount pad is provided with connecting thread, and said register pin is arranged at the mount pad side;

Said web member comprises the web member body, is provided with the bolt mounting groove in web member body middle part, has extended to form Connection Block around the web member body; Said Connection Block is provided with through hole, the adaptive breaker bolt that is socketed with of through hole, and the Connection Block body also is provided with the location shrinkage pool in the through hole side;

Saidly a plurality ofly be spliced to form said LED display device through web member and cooperating of web member group like any described LED display of claim 1-8; The be spirally connected connecting thread of mount pad of web member group of the breaker bolt correspondence of said web member, the location shrinkage pool of the register pin of said web member group and said web member body is adaptive spacing.

10. LED display device as claimed in claim 9; It is characterized in that: the Connection Block side of said web member body is provided with at least two location shrinkage pools; The through hole of Connection Block is step-like; A less end and the breaker bolt of size is suitable, is provided with groove between the Connection Block of web member body and is connected with reinforcement, and the bolt mounting groove of web member body is elongated; Said breaker bolt is provided with the stop bit boss in the end that screw thread is set, and breaker bolt is limited in the through hole of Connection Block through this stop bit boss socket;

Said mount pad sidepiece is provided with at least two register pins; The back plate edges of said LED display is provided with step-like through hole; Said mount pad comprises block end and link; Link passes said step-like through hole, and said block end is spacing by the step of step-like through hole, and said connecting thread is set on the said link; Said connecting thread is an external thread, and corresponding link external thread is provided with the nut locking; Said register pin comprises pin and bolt, and corresponding is provided with through hole in back plate edges, and said pin is set in the through hole from backboard through hole one side, and said bolt is by the opposite side fixing pin that is spirally connected; Said dowel ends is the chamfering section, and the middle part is the column positioning section, and afterbody is the socket section, and said socket section outside dimension is less than column positioning section outside dimension, and said bolt is bolted in the pin socket section.

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