CN103280164A - Led display screen module and led display screen - Google Patents
Led display screen module and led display screen Download PDFInfo
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- CN103280164A CN103280164A CN2013102108980A CN201310210898A CN103280164A CN 103280164 A CN103280164 A CN 103280164A CN 2013102108980 A CN2013102108980 A CN 2013102108980A CN 201310210898 A CN201310210898 A CN 201310210898A CN 103280164 A CN103280164 A CN 103280164A
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Abstract
The invention provides an LED display screen module which is suitable for the technical field of display screens and aims at solving the problems of flatness, water-proof performance and effective heat dissipation of an LED display screen in the prior art. The LED display screen module comprises a base, a circuit board, an LED lightening unit and a power source module. The base comprises a body part and side walls which surround the periphery of the body part, wherein the body part and the side walls form a containing cavity used for containing the circuit board. The LED display screen module further comprises pouring sealant which is poured on the circuit board and filled into the containing cavity, and a sealing layer which is flush with the side walls of the base is formed after the pouring sealant is solidified. The invention further provides an LED display screen. The sealing glue layer is adopted in the LED display screen module to enable the circuit board to be sealed inside the containing cavity so as to enable the surface of the sealing glue layer to be flush with the side walls of the base, waterproof performance and flatness of the LED display screen module are guaranteed, and therefore display quality of the LED display screen is guaranteed to meet the quality standards.
Description
Technical field
The invention belongs to the display screen technology field, relate in particular to LED display module and LED display.
Background technology
LED display is to come display text, picture, animation, video by light on and off red, blue, white, the green light pearl, and content displayed can be made different adjustings according to the needs of different occasions.Usually, LED display comprises display module, control module and power module, and wherein, display module comprises the effect of being made of to play luminous demonstration the LED lamp; Control module is passed through the light on and off of the LED lamp of respective regions in the control display module with contents such as display text, picture, videos; Power module is to transfer input voltage and input current to display screen required voltage electric current.
LED display has obtained application more and more widely in productive life, along with the development of LED application technology, increased new vitality for advertising with keen competition.Because LED display has exclusive, different luminous forms, the making field and the on-the-spot stage of variety that are widely used at advertised product show the field.
Along with the appearance of outdoor media, the application of outdoor LED display screen is more widespread.Usually, the area of outdoor LED display screen general tens square metres to hundreds of square metre even bigger, can work greatly in the sun in brightness height, visual angle, and have certain windproof, rainproof, water-proof function, are mainly used in outdoor advertising, station, square, market etc.
LED display is spliced to form by a plurality of LED display modules usually; the LED display module generally comprises plastics drain pan, wiring board and is arranged at LED lamp on the wiring board; only by peripheral box sealing to play waterproof effect; and adopt face shield to protect the LED lamp; but mask designs cost height and processing technology complexity also are difficult to control.Yet, when flatness, water resistance and the efficiently radiates heat etc. of LED display module go wrong, the LED display display effect will be affected and quality problem occur, for example the visual angle diminishes, has aberration, shade is arranged, color lump etc. is arranged, thereby can't satisfy the quality standard requirement that LED display shows.
Summary of the invention
The object of the present invention is to provide a kind of LED to show module, be intended to solve the problems such as flatness, water resistance and efficiently radiates heat of LED display module in the prior art.
The embodiment of the invention is to realize like this, a kind of LED display module comprises pedestal, the wiring board that cooperates with described pedestal, for the LED luminescence unit of luminous demonstration with for the power module of importing supply voltage, described LED luminescence unit and described power module are arranged at two relative surfaces of described wiring board and described power module respectively towards described pedestal, described pedestal comprises body and is surrounded on described body sidewall on every side, described body and described sidewall form the containing cavity of ccontaining described wiring board, described LED display module also comprises the casting glue that is cast on the described wiring board and fills up described containing cavity, described casting glue forms the adhesive layer that outside surface and described sidewall flush after solidifying, described LED luminescence unit is arranged at intervals on the described wiring board and protrudes from described adhesive layer.
Particularly, described LED display module also is provided with and is positioned on the described adhesive layer to cooperate with described LED luminescence unit
Grid, described LED luminescence unit passes described grid along described wiring board.
Particularly, described pedestal is provided with and connects described body with first accepting hole of accommodating described power module and the accepting groove that is surrounded on described first accepting hole, and described LED display module also comprises the bucker that covers at described first accepting hole top and is contained in the described accepting groove and the sealing strip between described bucker and described main part.
Particularly, described pedestal is provided with second accepting hole that connects described body, described LED display module also comprises along described second accepting hole and is exposed to the heat dissipation element of described pedestal and is arranged in described second accepting hole to seal the fluid sealant of described heat dissipation element, and described heat dissipation element and described LED luminescence unit are arranged at two relative surfaces of described wiring board respectively.
Particularly, described heat dissipation element linearly distributes and in described second accepting hole and spaced set.
Particularly, described LED display module also comprises and lock onto in the described body and deviate from the nut of described containing cavity and the screw that passes described body and fixedly connected described wiring board and described pedestal along wiring board one side that is provided with the LED luminescence unit.
Particularly, described pedestal be provided with along described body towards described wiring board outstanding and have the installation surface of placing described wiring board projection, along described install the surface outstanding with the boss that cooperates with described wiring board and along described installation protrusion of surface to protect the shade of described LED luminescence unit.
Particularly, described pedestal is provided with first through hole that connects described projection and described boss, and described wiring board is provided with second through hole and the described adhesive layer that pass for described boss and is provided with the third through-hole that communicates with described first through hole.
Particularly, described wiring board is provided with first slotted eye that passes for described shade, and described adhesive layer is provided with described first slotted eye and communicates so that described shade protrudes from second slotted eye of the outside surface of described adhesive layer.
The embodiment of the invention is achieved in that a kind of LED display comprises the casing of above-mentioned LED display module and fixing described LED display module.
The LED display module that the embodiment of the invention provides adopts casting glue to be cast on the wiring board and fills up described containing cavity, this casting glue forms after solidifying wiring board is sealed in adhesive layer in the containing cavity, LED luminescence unit on the wiring board is exposed to the outside surface of adhesive layer along being formed at grid on the described adhesive layer, and the sidewall of the outside surface of this adhesive layer and pedestal flushes, like this, the classification of waterproof that both can guarantee this LED display module reaches more than the IP65, can guarantee the flatness of LED display module again, thereby the display quality that guarantees the LED display module effectively satisfies quality standard.
Description of drawings
Fig. 1 is the structural representation of the LED display module that provides of the embodiment of the invention;
Fig. 2 is the partial enlarged drawing of the LED display module that provides of the embodiment of the invention;
Fig. 3 is the cut-open view of the LED display module that provides of the embodiment of the invention;
Fig. 4 is that the LED display module that provides of the embodiment of the invention is in the exploded view of a direction;
Fig. 5 is that the LED display module that provides of the embodiment of the invention is in the exploded view of other direction;
Fig. 6 is the partial enlarged drawing of the pedestal that provides of the embodiment of the invention, to show the structure of first, second accepting hole;
Fig. 7 is the partial enlarged drawing of the pedestal that provides of the embodiment of the invention, to show the structure of projection and boss;
Fig. 8 is the structural representation of the LED display that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Please be simultaneously referring to figs. 1 through Fig. 5, the LED display module 1 that the embodiment of the invention provides comprises pedestal 10, the wiring board 20 that cooperates with pedestal 10, for the LED luminescence unit 21 of luminous demonstration with for the power module 22 of importing supply voltage, LED luminescence unit 21 and power module 22 are arranged at two relative surfaces of wiring board 20 and power module 22 respectively towards pedestal 10, pedestal 10 comprise with adhesive layer 30 be positioned at wiring board 20 two relative surfaces bodies 12 and be surrounded on sidewall 14 around the body 12, body 12 and sidewall 14 form the containing cavity 13 of ccontaining wiring board 20, this LED display module 1 also comprises the casting glue that is cast on the wiring board 20 and fills up containing cavity 13, this casting glue forms the adhesive layer 30 that outside surface and sidewall 14 flush after solidifying, LED luminescence unit 21 is arranged at intervals on the wiring board 20 and protrudes from adhesive layer 30.Wiring board 20 comprises with adhesive layer 30 opposite first 28, with first surface 28 opposing second surface 29 and be arranged on the second surface 29 control module (not shown) with the light on and off that are used for control LED luminescence unit 21, LED luminescence unit 21 is arranged on this first surface 28, and power module 22 all is arranged on this second surface 29 and with body 12 with control module and cooperates.Particularly, this LED demonstration module 1 also is provided with and is positioned at the grid 32 to cooperate with LED luminescence unit 21 on the adhesive layer 30, this LED luminescence unit 21 passes corresponding grid 32 along wiring board 20, and this grid 32 is to be formed at around the LED luminescence unit 21 after casting glue solidifies.The LED display module 1 that the embodiment of the invention provides passes the grid 32 of adhesive layer 30 to play the effect of luminous demonstration by the LED luminescence unit 21 that will be arranged on the wiring board 20, and adopt adhesive layer 30 that wiring board 20 is sealed in the containing cavity 13 to play the purpose of waterproof, and classification of waterproof reaches more than the IP65, and the sidewall 14 of the outside surface of this adhesive layer 30 and pedestal 10 flushes, guarantee the flatness of this LED display module 1, so that LED display module 1 satisfies the quality standard requirement, and production technology controls easily, and is simple in structure.
Preferably, this adhesive layer 30 solidifies the back by casting glue and forms, and main material is silicon rubber, and is inferior light black.Adopt the described LED luminescence unit 21 of this adhesive layer 30 sealings playing protection against the tide, dustproof, anticorrosion, shockproof effect, thereby improve usability and the steadiness parameter of LED display module 1.And, adopt the adhesive layer 30 of inferior light black so that the surface of this LED display module 1 is black, thereby guarantee the consistance of the display effect of LED display module 1, so that display effect reaches quality standards.
Preferably, LED luminescence unit 21 is encapsulated in the LED lamp pearl on the wiring board 20 and is equally distributed on the wiring board 20 for SMD, to improve the display effect of this LED display module 1, in addition, the number of this LED luminescence unit 21 is decided according to the size of LED display module 1.
Please be simultaneously with reference to Fig. 5 and Fig. 7, pedestal 10 is provided with and connects body 12 with first accepting hole 120 of accommodating power module 22 and the accepting groove 126 that is surrounded on first accepting hole 120, and LED display module 1 also comprises the bucker 50 that covers at first accepting hole, 120 tops and is contained in the accepting groove 126 and the sealing strip 40 between bucker 50 and body 12.This accepting groove 126 is positioned at a side that deviates from containing cavity 13 of pedestal 10 to accommodate and to locate sealing strip 40, utilize sealing strip 40 closely to be connected between bucker 50 and the accepting groove 126 and utilize lock screw that bucker 50 and sealing strip 40 are fixedly installed on this pedestal 10, like this, guarantee the water resistance of LED display module 1 effectively, classification of waterproof is reached more than the IP64.Preferably, the shape of sealing bar 40 is identical with the shape of accepting groove 126, all is U-shaped or the C type, and the material of sealing bar 40 is silicon rubber.
Please referring again to Fig. 3 to Fig. 7, pedestal 10 is provided with second accepting hole 124 that connects body 12, LED display module 1 also comprises along second accepting hole 124 and is exposed to the heat dissipation element 24 of pedestal 10 and is arranged in second accepting hole 124 fluid sealants 60 with sealed heat-dissipating element 24, and heat dissipation element 24 and LED luminescence unit 21 are arranged at the two relative surperficial of wiring board 20 respectively.Heat dissipation element 24 is arranged at the second surface 29 of wiring board 20 and is exposed to pedestal 10 to play thermolysis along second accepting hole 124, fluid sealant 60 is arranged in second accepting hole 124 and with heat dissipation element 24 and pedestal 10 is tightly connected so that heat dissipation element 24 parts are exposed to pedestal 10, play the purpose of waterproof on the one hand, reach the purpose of heat radiation on the other hand by the exposed part of heat dissipation element 24 effectively.Preferably, described heat dissipation element 24 be with heat radiator through surface mount on the electronic component (not shown) that is arranged on the wiring board 20, adjacent heat radiator does not all connect and forms the heat dissipation channel of convection current between adjacent heat radiator, and fin section is exposed to fluid sealant 60, so that electronic component quick heat radiating, sealing glue 60 solidifies the back by casting glue and forms, and main material is silicon rubber, and is inferior light black.
Please refer to Fig. 5 and Fig. 7, heat dissipation element 24 linearly distributes and spaced set in second accepting hole 124.Described heat dissipation element 24 linearly is distributed on the wiring board 20, and the heat dissipation elements 24 that are arranged in each second accepting hole 124 are equidistant arrangement, and is simple in structure, has the quick heat radiating effect.Preferably, the quantity of this heat dissipation element 24 is decided according to the thermal value of the LED luminescence unit 21 on the respective lines plate 20, can be 6, perhaps other numerical value.
Please refer to Fig. 4 and Fig. 5, LED display module 1 also comprises and lock onto in the body 12 and deviate from the nut 70 of containing cavity 13 and the screw 80 that passes body 12 and fixedly connected wiring boards 20 and pedestal 10 along wiring board 20 1 sides that are provided with LED luminescence unit 21.Pedestal 10 is established a plurality of blind hole 128 of copper post and fixed orifices 129 that cooperate with screw of studding with, nut 70 passes the casing 2(that cooperates with LED display module 1 as shown in Figure 8) on locking hole to lock onto in this blind hole 128, namely utilize nut 70 to lock onto the back side of LED display module 1.Screw 80 passes the connecting hole 29 on the wiring board 20 and lock onto fixed orifice 129 interior so that wiring board 20 is fixedlyed connected with pedestal 10 along first surface 28, namely utilize screw to lock onto the front of LED display module 1.Like this, in maintenance process, can fix respectively and dismantle from the front and back of LED display module 1, be convenient to safeguard.
Please refer to Fig. 3 and Fig. 6, pedestal 10 is provided with along body 12 and gives prominence to and have the projection 15 on the installation surface 150 of placement wiring board 20, gives prominence to along installation surface 150 with the boss 16 and the edge that cooperate with wiring board 20 and surperficial 150 projections are installed to protect the shade 18 of LED luminescence unit 21 towards wiring board 20.The second surface 29 of wiring board 20 fits in this installation surface 150 so that power module 22 is contained in first accepting hole 120 and heat dissipation element 24 is contained in second accepting hole 124, so that wiring board 20 is positioned in the pedestal 10 reposefully, and utilize screw 80 that wiring board 20 is fixed in the pedestal 10.Described projection 15 forms step-like structures with corresponding projection 15, and shade 18 equates with the quantity of LED luminescence unit 21.When installing and using; shade 18 is positioned at the top of LED luminescence unit 21 with protection LED electroluminescent lamp; when this LED display module 1 was used for the open air, this shade 18 can be given described LED luminescence unit 21 sunshades, thereby makes LED luminescence unit 21 have good colour mixture effect.Preferably, this shade 18 is circular arc to keep the sun off.
Please be simultaneously with reference to Fig. 3 to Fig. 6, pedestal 10 is provided with first through hole 19 that connects projection 15 and boss 16, and wiring board 20 is provided with second through hole 26 and the adhesive layer 30 that pass for boss 16 and is provided with the third through-hole 34 that communicates with first through hole 19.Boss 16 passes second through hole 26 so that first through hole 19 communicates with third through-hole 34, is beneficial to air and passes through, and strengthen thermolysis to LED display module 1, and be conducive to reduce windage greatly and strengthen wind loading rating.Preferably, first through hole 19 is identical with the quantity of third through-hole 34, and shape is square, and the size of second through hole 26 is a bit larger tham the physical dimension of boss 16 so that install.
Please referring again to Fig. 3 to Fig. 5, wiring board 20 is provided with first slotted eye 25 that passes for shade 18, and adhesive layer 30 is provided with first slotted eye 25 and communicates so that shade 18 protrudes from second slotted eye 36 of the outside surface of adhesive layer 30.This second slotted eye 36 forms behind casting glue, with printed circuit board 20, and by outstanding these second slotted eyes 36 of shade 18 to block the sunlight that exposes to LED luminescence unit 21 tops.And, only expose shade 18 and LED luminescence unit 21 and flush with sidewall 14 at the outside surface of adhesive layer 30, like this, adhesive layer 30 is sealed in wiring board 20 in the containing cavity 13 fully, so that classification of waterproof reaches more than the IP65.
Please refer to Fig. 3 to Fig. 5, the quantity of first slotted eye 25, second slotted eye 36 and grid 32 equates with the quantity of LED luminescence unit 21.Each LED luminescence unit 21 corresponding shade 18, and each LED luminescence unit 21 is exposed to the outside surface of adhesive layer 30 through the grid 32 of correspondence.Each shade 18 is based in the outside surface of adhesive layer 30 to keep the sun off along corresponding first slotted eye 25 and second slotted eye 36.Preferably, the shape of first slotted eye 25 and second slotted eye 36 is identical with the shape of shade 18, and first slotted eye 25 is a bit larger tham shade 18 so that install.
Please refer to Fig. 3 to Fig. 7, during installation, the second surface 29 of wiring board 20 is fitted on the mounting plane 150 of pedestal 10, make power module 22 be contained in first accepting hole 120 and heat-sink unit 24 is contained in second accepting hole 124, and boss 16 is inserted in second through hole 26 with location wiring board 20 and shade 18 insert first slotted eye 25 with the first surface 28 that protrudes from wiring board 20 and play shaded effects, utilize casting glue to inject on the first surface 28 of wiring board 20 and landfill containing cavity 13, treat that casting glue solidifies the back and forms the adhesive layer 20 that one deck flushes with sidewall 14, thereby reach the waterproof sealing effect to this LED display module 1, guaranteed this planarization simultaneously.And owing to the unified consistance that has guaranteed this LED display module 1 of these adhesive layer 20 color and lusters, saving material and technology are simple.First through hole 19 communicates with second through hole 34 on the adhesive layer 30, utilizing air by playing thermolysis, and reduces windage and strengthens wind loading rating.Sealing strip 40 tamped in accepting groove 126 and with bucker 60 fit in sealing bar 40, utilize lock screw that this bucker 60 and sealing strip 40 are fixed and closely be connected on the pedestal 10 simultaneously, to guarantee the water resistance of power module 22 and this LED display module 1.Casting glue is injected in second accepting hole 124 so that heat dissipation element 24 parts are exposed to surface outside the fluid sealant 60 that solidifies back formation, to play waterproof purpose and thermolysis.
LED display module that the embodiment of the invention provides 1 adopts adhesive layer 30 that wiring board 20 is sealed in the containing cavity 13 so that be arranged on the outside surface that LED luminescence unit 21 parts on the wiring board 20 are exposed to adhesive layer 30, and the sidewall 14 of the outside surface of this adhesive layer 30 and pedestal 10 flushes, like this, the classification of waterproof that both can guarantee this LED display module 1 reaches more than the IP65, can guarantee the flatness of LED display module 1 again, thereby the display quality that guarantees LED display module 1 effectively satisfies quality standard.
Please refer to Fig. 8, the LED display that the embodiment of the invention provides comprises the casing 2 of at least two above-mentioned LED display modules 1 and fixed L ED display screen module 1.Preferably, the number of above-mentioned LED display module 1 is 8.A plurality of LED display modules 1 are spliced to form larger-size LED display, are applicable to outdoor environment, and, because LED display module 1 has excellent waterproof and quick heat radiating function, like this, can effectively guarantee the usability of LED display.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. LED display module, comprise pedestal, the wiring board that cooperates with described pedestal, for the LED luminescence unit of luminous demonstration with for the power module of importing supply voltage, described LED luminescence unit and described power module are arranged at two relative surfaces of described wiring board and described power module respectively towards described pedestal, it is characterized in that, described pedestal comprises body and is surrounded on described body sidewall on every side, described body and described sidewall form the containing cavity of ccontaining described wiring board, described LED display module also comprises the casting glue that is cast on the described wiring board and fills up described containing cavity, described casting glue forms the adhesive layer that outside surface and described sidewall flush after solidifying, described LED luminescence unit is arranged at intervals on the described wiring board and protrudes from described adhesive layer.
2. LED display module as claimed in claim 1 is characterized in that, also is provided with to be positioned at the grid to cooperate with described LED luminescence unit on the described adhesive layer, and described LED luminescence unit passes described grid along described wiring board.
3. LED display module as claimed in claim 1, it is characterized in that, described pedestal is provided with and connects described body with first accepting hole of accommodating described power module and the accepting groove that is surrounded on described first accepting hole, and described LED display module also comprises the bucker that covers at described first accepting hole top and is contained in the described accepting groove and the sealing strip between described bucker and described main part.
4. LED display module as claimed in claim 1, it is characterized in that, described pedestal is provided with second accepting hole that connects described body, described LED display module also comprises along described second accepting hole and is exposed to the heat dissipation element of described pedestal and is arranged in described second accepting hole to seal the fluid sealant of described heat dissipation element, and described heat dissipation element and described LED luminescence unit are arranged at two relative surfaces of described wiring board respectively.
5. LED display module as claimed in claim 4 is characterized in that, described heat dissipation element linearly distributes and in described second accepting hole and spaced set.
6. LED display module as claimed in claim 1, it is characterized in that, also comprise locking onto in the described body and deviating from the nut of described containing cavity and the screw that passes described body and fixedly connected described wiring board and described pedestal along wiring board one side that is provided with the LED luminescence unit.
7. as any described LED display module of claim 1 to 6; it is characterized in that, described pedestal be provided with along described body towards described wiring board outstanding and have the installation surface of placing described wiring board projection, along described install the surface outstanding with the boss that cooperates with described wiring board and along described installation protrusion of surface to protect the shade of described LED luminescence unit.
8. LED display module as claimed in claim 7, it is characterized in that, described pedestal is provided with first through hole that connects described projection and described boss, and described wiring board is provided with second through hole and the described adhesive layer that pass for described boss and is provided with the third through-hole that communicates with described first through hole.
9. LED display module as claimed in claim 7, it is characterized in that, described wiring board is provided with first slotted eye that passes for described shade, and described adhesive layer is provided with described first slotted eye and communicates so that described shade protrudes from second slotted eye of the outside surface of described adhesive layer.
10. a LED display is characterized in that, comprise as any described LED display module of claim 1 to 9 and fixing as described in the casing of LED display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310210898.0A CN103280164B (en) | 2013-05-30 | 2013-05-30 | LED display module and LED display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210898.0A CN103280164B (en) | 2013-05-30 | 2013-05-30 | LED display module and LED display |
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| CN103280164A true CN103280164A (en) | 2013-09-04 |
| CN103280164B CN103280164B (en) | 2016-02-17 |
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| CN201310210898.0A Expired - Fee Related CN103280164B (en) | 2013-05-30 | 2013-05-30 | LED display module and LED display |
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