CN208796596U - A kind of double thermally conductive sheet clamping plate type LED display unit mould groups - Google Patents

Abstract

The utility model discloses a kind of double thermally conductive sheet clamping plate type LED display unit mould groups.It includes that sealed colloid, thermally conductive panel, thermally conductive backplane, heating column and the LED being made of circuit board, IC chip and LED light tube show lamp plate；Circuit board is stacked and is held between thermally conductive panel and thermally conductive backplane, on thermally conductive panel and position corresponding with LED light tube offers lamp body via hole, heating column is locked on thermally conductive panel after thermally conductive backplane and circuit board, and sealed colloid is covered on thermally conductive panel and thermal conductive surface plate and LED are at least shown that lamp plate cladding is integrated.The utility model constitutes the double-deck thermally conductive sheet that clamping LED shows lamp plate using thermally conductive panel and thermally conductive backplane, can show heat quick conductive caused by lamp plate and externally heat dissipation to heat caused by direct sunlight and LED under the cooperation of heating column；Meanwhile the sealing structure of entire mould group both can be enhanced using sealed colloid, lamp plate and thermally conductive backplane, which carry out secondary locking, to be shown to thermally conductive panel, LED, guarantee the stability of modular structure.

Description

A kind of double thermally conductive sheet clamping plate type LED display unit mould groups

Technical field

The utility model relates to LED display technical field, especially a kind of double thermally conductive sheet clamping plate type LED display unit moulds Group.

Background technique

It is well known that traditional LED display unit mould group common processes structure are as follows: LED is shown that lamp plate is installed in rubber shell Afterwards, liquid sealant is poured into rubber shell LED is shown that lamp plate is packaged in rubber shell, after hydraulic seal adhesive curing, then incited somebody to action Mask is placed in LED and shows the emission side of lamp plate and be integrated with rubber shell locking, constitutes finished product LED display unit mould with this Group.

However, traditional LED display unit mould group makes (in the environment especially under sunlight irradiation) in being placed in outdoor environment Used time, since sealed colloid and the plastics colloid for constituting mask are poor conductor of heat, because of heat caused by sun exposure It can gather in the sealed colloid that LED shows lamp plate front surface；Meanwhile positioned at the circuit board of LED light tube back side be undulation degree Matter also belongs to poor conductor of heat, heat caused by the LED light that is lit (that is: in running order under LED light tube) It can be collected in sealed colloid simultaneously；Based on this, heat caused by solar exposure can be mutually folded with heat caused by LED light Add, and due to the structure channel that entire mould group lacks heat transfer and distributes, under lasting exposure in sunshine and cell module Lower meeting is continued working so that the internal temperature of sealed colloid sharply increases and causes with environment temperature, display lamp plate brightness change Temperature change dramatically, lasting raising, lead to cell module or even the generally existing such as lamp body temperature of outdoor LED display screen by high temperature It is excessively high, temperature rise is uncontrollable, then bring dead lamp rate to increase, light decay phenomenon is serious, display module deformation, faults frequent etc. is many asks Topic, this is chronic illness existing for LED outdoor display screen industry many years.

Utility model content

In view of the deficiency of the prior art, the purpose of this utility model is to provide a kind of double thermally conductive sheet clamping plate types LED display unit mould group.

To achieve the goals above, the utility model adopts the following technical solution:

A kind of double thermally conductive sheet clamping plate type LED display unit mould groups, it includes that LED shows that lamp plate, the LED show lamp plate packet Include circuit board, the IC chip that is mounted in the rear surface of circuit board and several are mounted on the front surface of circuit board and are in each other The LED light tube of array distribution；

It further includes that sealed colloid, thermally conductive panel, thermally conductive backplane and several heating columns, the circuit board are stacked and clamp Between thermally conductive panel and thermally conductive backplane, on the thermally conductive panel and position corresponding with every LED luminous tube is offered One runs through the lamp body via hole of distribution for LED light tube, and thermally conductive backplane and circuit board are sequentially run through in the front end of the heating column After be locked on thermally conductive panel, the sealed colloid is covered on thermally conductive panel and thermal conductive surface plate and LED is at least shown lamp plate Cladding is integrated.

Preferably, on the thermally conductive panel and position corresponding with every heating column is provided with one first convex rib Position, the crowning of first convex rib position are located at the front-surface side of circuit board, and the front end of the heating column is locked in first On convex rib position.

Preferably, the heating column includes the nut portion for the back-surface side for being connected to thermally conductive backplane, by the center in nut portion Region make it is axially extending after molding and the guide pillar part being distributed simultaneously through thermally conductive backplane and circuit board and by guide pillar part before End make it is axially extending after form and be locked in the silk tooth portion on the first convex rib position；The length of the guide pillar part is not less than circuit board Thickness and the sum of the thickness of thermally conductive backplane, and the front end face of the guide pillar part and the crowning of the first convex rib position offset, institute State the diameter that a diameter in tooth portion is less than guide pillar part.

Preferably, a lamp point convex ribs position is provided on the thermally conductive panel and positioned at the avris of each lamp body via hole.

Preferably, the front surface of the sealed colloid is formed with for the front surface of pitted skin and/or the sealed colloid and is used for The lamp point convex ribs position embarked on journey or be in a row distributed is covered to the reflection-proof lines being integrated.

Preferably, several thermally conductive copper posts being distributed through circuit board are additionally provided on the circuit board, it is described thermally conductive The rear end face of copper post offsets with thermally conductive backplane.

Preferably, the second convex rib position for accommodating IC chip, second protrusion are provided in the thermally conductive backplane The crowning of muscle position is located at the back-surface side of thermally conductive backplane, and several phases are provided on the crowning of second convex rib position It is in the external fixture nut of array distribution between mutually.

Preferably, the circumferential surface for coating external fixture nut is provided in the rear surface of the thermally conductive backplane and along by several External fixture nut is formed by the first colloid seal line network of cyclic path distribution after joining end to end.

Preferably, it is also set up in the rear surface of the thermally conductive backplane and in the enclosing face domain of the first colloid seal line network There are several mutual internal fixture nuts in array distribution, it is internally solid to be provided with cladding in the rear surface of the thermally conductive backplane Determine the circumferential surface of nut and is formed by the second glue of cyclic path distribution after being joined end to end by several internal fixture nuts Body seal line network；

It further includes the connecting terminal box being locked in thermally conductive backplane by internal fixture nut, and the connecting terminal box is extremely It is few to include the conductive base plate being stacked and placed in thermally conductive backplane and assemble the box body being integrated, table before the box body is outer with conductive base plate Radiating fin is provided on face.

Preferably, it further includes several simultaneously through the injecting glue of the avris of the avris of thermally conductive panel and circuit board distribution Tenon mouth, the sealed colloid include the main surface domain portion being covered on thermally conductive panel and are formed in the periphery in main surface domain portion simultaneously The periphery wall portion of the avris of thermally conductive panel and the avris of circuit board is at least while coated, is formed with and fills out in periphery wall portion It fills in the colloid tenon protrusion in injecting glue tenon mouth.

Preferably, the injecting glue tenon mouth is also distributed through the avris of thermally conductive backplane simultaneously, and periphery wall portion is wrapped simultaneously The avris of the avris of thermally conductive panel, the avris of circuit board and thermally conductive backplane is covered, and the sealed colloid further includes being formed in periphery The rear side in wall portion and coat thermally conductive backplane rear surface edge back side bound edge portion；

Preferably, it further include be distributed and surround through thermally conductive panel, circuit board and thermally conductive backplane simultaneously every it is thermally conductive The injecting glue via hole of column distribution and be linked together and coat via injecting glue via hole and sealed colloid heating column backside heating column End face covering portion.

Preferably, the thermally conductive panel and/or thermally conductive backplane form after making punching press for aluminium sheet and surface is through anodic oxygen chemical industry Skill+blackening processing plate-like structure；The heating column is copper structural body.

As the above scheme is adopted, the utility model constitutes clamping LED display lamp using thermally conductive panel and thermally conductive backplane The double-deck thermally conductive sheet of plate can show caused by lamp plate heat caused by direct sunlight and LED under the cooperation of heating column Heat carries out quick conductive and heat dissipation, efficiently avoids the display unit mould group under traditional handicraft structure because of the bad or nothing that radiates The series of problems of method heat dissipation and appearance；Meanwhile the sealing structure of entire mould group both can be enhanced using sealed colloid, it can also be with Lamp plate and thermally conductive backplane, which carry out the secondary locking for being equivalent to adhesive tape riveting form, to be shown to thermally conductive panel, LED, guarantees modular structure Stability.

Detailed description of the invention

Fig. 1 is the frontal planar structural schematic diagram of the utility model embodiment；

Fig. 2 is the rear plan structural schematic diagram of the utility model embodiment；

Fig. 3 be in Fig. 2 A-A to cross section structure schematic diagram；

Fig. 4 is the cross section structure schematic diagram of B-B direction in Fig. 2；

Fig. 5 is the partial structurtes enlarged diagram of the utility model embodiment in a disassembled state；

Fig. 6 is the partial structurtes enlarged diagram of sealed colloid in Fig. 5；

Fig. 7 is the structural decomposition diagram of the utility model embodiment；

Fig. 8 is the partial structurtes enlarged diagram of a-quadrant in Fig. 7；

Fig. 9, which is the utility model embodiment, is making to simplify treated structural decomposition diagram to sealed colloid；

In figure:

A, lamp body via hole；B1, guide post via hole；B2, guide post via hole；C, injecting glue tenon mouth；

10, LED shows lamp plate；11, circuit board；12, IC chip；13, LED light tube；20, sealed colloid；21, main surface Domain portion；22, periphery wall portion；23, colloid tenon protrusion；24, back side bound edge portion；25, heating column end face covering portion；26, cambered surface is convex It rises；27, reflection-proof lines；28, striped lines；30, thermally conductive panel；31, the first convex rib position；32, lamp point convex ribs position；40, it leads Hot backboard；41, the second convex rib position；42, external fixture nut；43, the first colloid seal line network；44, internal fixture nut； 45, the second colloid seal line network；50, heating column；51, nut portion；52, guide pillar part；53, silk tooth portion；60, connecting terminal box；61, Conductive base plate；62, box body；63, radiating fin；64, energy-storage battery+super capacitor.

Specific embodiment

The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right It is required that the multitude of different ways for limiting and covering is implemented.

As shown in Figures 1 to 9, a kind of double thermally conductive sheet clamping plate type LED display unit mould groups provided in this embodiment, it includes LED shows that lamp plate 10, (it can select as the case may be the liquid silica gel of colored transparent and infuse via glue-injection machine sealed colloid 20 Sealing rubber die molding), thermally conductive panel 30, thermally conductive backplane 40 and several heating columns 50；Wherein, LED shows that lamp plate 10 includes circuit Plate 11, the IC chip 12 being mounted in the rear surface of circuit board 11 and several be mounted on the front surface of circuit board 11 and each other In the LED light tube 13 of array distribution；Circuit board 11 is stacked and is held between thermally conductive panel 30 and thermally conductive backplane 40, thermally conductive On panel 30 and position corresponding with every LED luminous tube 13 offers a lamp body for LED light tube 13 through distribution Via hole a, the front end of heating column 50 are locked on thermally conductive panel 30 after sequentially running through thermally conductive backplane 40 and circuit board 11, together When, sealed colloid 20 is covered on thermally conductive panel 30 and thermal conductive surface plate 30 and LED is at least shown that the cladding of lamp plate 10 is integrated；This The thermally conductive panel 30 and thermally conductive backplane 40 of embodiment can be processed by the plate of material with Thermal conductivity according to the actual situation Type, such as aluminium sheet metal.

The LED display unit mould group of the present embodiment using thermally conductive panel 30 and thermally conductive backplane 40 to LED show lamp plate 10 with The stacked mode of stacking clamp and shows lamp plate to LED by the connection relationship between heating column 50 and thermally conductive panel 30 10, thermally conductive panel 30 and thermally conductive backplane 40 carry out sealed fixation, so that entire mould group is constituted LED and show that lamp plate 10 is placed in the middle, thermally conductive Panel 30 and thermally conductive backplane 40 are located at the combination sandwich that LED shows the front and rear sides of lamp plate 10；Meanwhile utilizing sealed colloid The front surface face domains of 20 pairs of thermally conductive panels 30, LED show the circumference domain of lamp plate 10, thermally conductive panel 30 circumference domain so that lead The circumference domain and back surface partial face domain of hot backboard 40 carry out covering cladding；As a result, entire mould group is with beneficial below Effect, specifically:

1, pass through thermally conductive panel 30,40 and of thermally conductive backplane (when especially using in environment outdoors) in practical application Structure cooperation between heating column 50 constitutes to be produced when showing that lamp plate 10 works to heat caused by direct sunlight and LED Raw heat carries out thermally conductive and heat dissipation carrier；Wherein, thermally conductive panel 30 is because being coated in sealed colloid 20, thermally conductive panel 30 It absorbs and the heat assembled can be balanced conduction on thermally conductive panel 30, then via the conduction of heating column 50 to thermally conductive backplane 40 It is upper and finally accumulated using big region surface possessed by thermally conductive backplane 40 and be exposed to the design feature of sealed colloid 20 to mould group Outside distributes；And since thermally conductive backplane 40 is to be close to the back side and IC chip 12 of circuit board 11, so that LED shows lamp plate 10 Heat caused by body can also be directly synchronous to distributing outside mould group from thermally conductive backplane 40；So that mould group itself have it is good The good inside capacity of heat transmission and external heat-sinking capability, for dead lamp rate, light decay and the failure-frequency and enhancing mould group for reducing mould group The controllability of temperature rise creates condition.

2, after locking LED display lamp plate 10 between thermally conductive panel 30 and thermally conductive backplane 40, due to having phase between three Structure flatness possessed by the design feature and thermally conductive panel 30 and thermally conductive backplane 40 being mutually superimposed itself and rigidity, can be greatly Enhance the flatness and rigidity of mould group entirety.

3, sealed colloid 20 can be formed after injecting glue, cooling and solidifying by the liquid silica gel of colored transparent, utilize sealed colloid It is close not only can effectively to enhance waterproof and dustproof of mould group etc. for the covering in 20 pairs of associated components and region or the design feature of cladding Sealing property, and can to show that lamp plate 10, thermally conductive panel 30 and thermally conductive backplane 40 carry out to LED secondary for the sealed colloid 20 after solidifying Locking, so that heating column 50 be cooperated to complete the reinforcing to the structural stability of entire mould group.

To guarantee heating column 50 and the structural stability of thermally conductive panel 30 upon connection, on thermally conductive panel 30 and with every The corresponding position of heating column 50, which is provided with one first convex rib position 31, (to be had in thermally conductive panel 30 by sheet metal etc. When the plate of material of certain rigidity makes molding, the first convex rib position 31 can using the direction where Sheet Metal Forming Technology towards circuit board 11 into Formed after row punching press), the crowning of the first convex rib position 31 is located at the front-surface side of circuit board 11, and the front end of heating column 50 It is then locked on the central area of the first convex rib position 31.It is locked in and is led for heating column 50 using the first convex rib position 31 as a result, Locations of structures space is provided on hot panel 30.

It is generally the particularity of the material property and circuit board 11 of Fiber Materials in entire mould group in view of circuit board 11, For prevent because heating column 50 lock after caused by extruding force to circuit board 11 destroy, the heating column 50 of the present embodiment can refer to all Such as structure of screw, screw or screw rod hardware-joint is configured, it may be assumed that including for rotating to entire heating column 50 Manipulate and be connected to the back-surface side of thermally conductive backplane 40 nut portion 51, by the central area in nut portion 51 make it is axially extending after at Type and the guide pillar part 52 being distributed simultaneously through thermally conductive backplane 40 and circuit board 11 and axial prolong is made by the front end of guide pillar part 52 It is formed after stretching and is locked in the silk tooth portion 53 on the first convex rib position 31；Wherein, the length of guide pillar part 52 is not less than circuit board 11 Thickness and the sum of the thickness of thermally conductive backplane 40 (certainly, preferably, the length of guide pillar part 52 is preferably equal to circuit board 11 The sum of with the thickness of thermally conductive backplane 40), the diameter in silk tooth portion 53 is then less than the diameter of guide pillar part 52, so that entire heating column 50 form similar to front end there is silk dental structure, main part to present circumferential surface is smooth and the cylindrical-shaped structure of whole positive step Form.It, can be in advance in circuit board 11 when LED is shown that lamp plate 10, thermally conductive panel 30 and thermally conductive backplane 40 carry out locking assembly With guide post via hole b1 and b2 (preferably, the guide post via hole b1 for wearing for guide pillar part 52 are opened up in thermally conductive backplane 40 It is identical with guide post via hole b2 internal diameter), the guide post via hole to lock for silk tooth portion 53 is opened up at the center of the first convex rib position 31 b3.As a result, after silk tooth portion 53 is locked on the first convex rib position 31, front end face (that is: the guide pillar part 52 and silk tooth of guide pillar part 52 Transition face between portion 53) can and the first convex rib position 31 crowning offset, nut portion 51 then with the back table of thermally conductive backplane 40 Face offsets, the pulling force caused by heating column 50 from front to back can be acted on guide pillar part 52 by the first convex rib position 31, by It can then be directly acted in thermally conductive backplane 40 by nut portion 51 to preceding pulling force afterwards, to utilize thermally conductive panel 30 and thermally conductive backplane 40 are converted to the force of point caused by heating column 50 the face domain force (that is: face domain chucking power) to circuit board 11, to keep away Exempt to be easy to cause the problem of the breakage of circuit board 11 because heating column 50 directly carries out local force to circuit board 11.

For enhance mould group display effect, in the front surface of thermally conductive panel 30 and be located at each lamp body via hole a avris Be provided with a lamp point convex ribs position 32, to thermally conductive panel 30 carry out lamp body via hole a during opening up it is (such as stamping forming It can be formed directly in lamp point convex ribs position 32 in the process)；It, not only can be in every LED luminous tube 13 using lamp point convex ribs position 32 with this Avris form sunshade protrusion to promote the contrast of entire mould group by keeping the sun off irradiation, and carry out injecting glue cladding simultaneously After forming sealed colloid 20, lamp point boss 32 can play the role of reinforcing rib in the inside of sealed colloid 20, and then effectively slow down Frontal impact is to damage and failure caused by LED light tube 13.

For the display effect for further enhancing mould group, the front surface of the sealed colloid 20 of the present embodiment be can be used by protrusion Arc pitted skin structure composed by particle (such as the corresponding region of every LED luminous tube 13 be respectively formed cambered surface protrusion 26 and/or In its front surface be arranged striped lines 28) and/or sealed colloid 20 front surface be provided with reflection-proof lines 27 (its arrange shape Formula can be used the lamp point convex ribs position 32 for being distributed or being in a row distributed that will embark on journey and continuously be covered, to form a plurality of lines.It is sharp with this With cambered surface protrusion 26, striped lines 28 and/or reflection-proof lines 27 diffusing reflection can be carried out to prevent to the light injected by the external world Mould group surface reflection, and then enhance the display effect of mould group.

To guarantee that heat caused by LED light tube 13 can be distributed promptly via thermally conductive backplane 40 outward, in circuit The thermally conductive copper post that several are distributed through circuit board 11 is additionally provided on plate 11 (to be not shown in the figure, position and quantity is arranged It can be laid out according to the quantity and Rankine-Hugoniot relations of LED light tube 13, be made of as being set to several LED luminous tubes 13 Array surface domain central area), the rear end face of thermally conductive copper post then offsets with thermally conductive backplane 40, and its front end face is then preferably able to It offsets with the bottom surface of the wherein LED luminous tube 13 in certain array surface domain.It as a result, can be by circuit board 11 using thermally conductive copper post Heat caused by the heat or even LED light tube 13 assembled rapidly is conducted to thermally conductive backplane 40, thus using thermally conductive Backboard 40 carries out rapid cooling.

IC chip 12 shows the wherein major heat source in lamp plate 10 as LED, shows to further enhance to LED The thermally conductive and heat dissipation effect of lamp plate 10 is provided with the second convex rib position 41 for accommodating IC chip 12 in thermally conductive backplane 40, It can be by the stamped rear molding of thermally conductive backplane 40 of such as sheet metal), it is located at the crowning of the second convex rib position 41 thermally conductive The back-surface side of backboard 40 provides structure space with this placement using the second convex rib position 41 for IC chip 12 and makes IC chip 12 can be close to the front surface of the second convex rib position 41, and then be reached using directly contacting for IC chip 12 and thermally conductive backplane 40 Quick conductive and the purpose of heat dissipation；Meanwhile several are provided on the crowning of the second convex rib position 41 each other in array The external fixture nut 42 of distribution, to be locked entire mould group with display screen box body using external lock screw 42 Gu；Certainly, it is pointed out that: the second convex rib position 41 of the present embodiment does not need to correspond with IC chip 12, can It is configured according to certain cyclic path, is such as configured like the shape of " returning " font, IC chip 12 can be according to square at this time Shape regular array is distributed on circuit board 11 and is embedded in the second convex rib position 41, to be the setting of external fixture nut 42 And entire mould group is assemblied in display screen box body the condition that provides.

To enhance the structural compactness after entire mould group and display screen box body assembly and playing to connection gap between the two Sealing effect, be provided in the rear surface of thermally conductive backplane 40 coat external fixture nut 42 circumferential surface and along by several it is right Outer fixture nut 42 is formed by cyclic path distribution (it can be appreciated that being along the first convex rib position 41 after joining end to end Chamfered shape distribution) the first colloid seal line network 43, the first colloid seal line network 43 can form in sealed colloid 10 through injecting glue When by selection setting to related die or to the setting synchronous forming of this body structure of mould group (such as in thermally conductive panel 30, electric Corresponding injecting glue via structure etc. is set on road plate 11 and thermally conductive backplane 40).With this, not only using the first colloid seal line network 43 Can be wrapped up external fixture nut 42 erosion to prevent it by external factor, and by external lock screw 42 with Display screen box body can form the first colloid seal line network 43 after being locked and squeeze, so that the first colloid seal line network 43 be made to rise To sealing effects such as waterproof and dustproofs.

Relevant components component (such as playing the component of terminal connection or control function) to be further mould group provides Assembly space, if being additionally provided in the rear surface of thermally conductive backplane 40 and in the enclosing face domain of the first colloid seal line network 43 Dry mutual in the internal fixture nut 44 (it is configured in a manner of rectangular array can be used) of array distribution, while leading It is provided with the circumferential surface for coating internal fixture nut 44 in the rear surface of hot backboard 40 and edge is made by several internal fixture nuts 44 The second colloid seal line network 45 of cyclic path distribution is formed by after joining end to end；Meanwhile the mould group of the present embodiment further includes It is locked in the connecting terminal box 60 in thermally conductive backplane 40 by internal fixture nut 44, and connecting terminal box 60 is then included at least and is folded The conductive base plate 61 being placed in thermally conductive backplane 40 and the box body 62 being integrated with the assembly of conductive base plate 61, and outside box body 62 Radiating fin 63 is provided in front surface (certainly, can be arranged energy-storage battery+super according to the actual situation in connecting terminal box 60 The components such as capacitor 64, connection terminal)；Wherein, the molding mode of the second colloid seal line network 45 can refer to the first colloid seal line Network 43.With this, internal fixture nut 44 can be effectively prevent to the package of interior fixture nut 44 using the second colloid seal line network 45 By the erosion of external factor, while the squeezing to the second colloid seal line network 45 by connecting terminal box 60 (especially box body 62) Pressure effect can reach the sealing effect in the structure gap between pair of wire connection terminals box 60 and thermally conductive backplane 40, to prevent water, ash Dirt etc. invades in connecting terminal box 60；In addition, passing through the contact relation of conductive base plate 61 and thermally conductive backplane 40 and internally fixing The heat assembled in thermally conductive backplane 40 can be rapidly transferred on box body 62 by the connection relationship of nut 44 and thermally conductive backplane 40, And then effectively cross-ventilation is carried out using radiating fin 63, realize the rapid cooling of mould group.

For the structure for optimizing entire mould group to the maximum extent, the display module of the present embodiment further includes several while running through In the injecting glue tenon mouth c that the avris of thermally conductive panel 30 and the avris of circuit board 11 are distributed, (it can use such as to fall according to the actual situation " V " font or swallow-tail form), and sealed colloid 20 then includes the main surface domain portion 21 being covered on thermally conductive panel 30 and is formed In main surface domain portion 21 periphery and at least while coat thermally conductive panel 30 avris and circuit board 11 avris periphery wall Portion 22 is formed with the colloid tenon protrusion 23 being filled in injecting glue tenon mouth c in periphery wall portion 22.Such as liquid is recycled as a result, During the raw materials such as body silica gel form sealed colloid 20 through injecting glue, liquid charging stock is filling and is covering thermally conductive panel 30 and LED It can synchronize and be filled in injecting glue tenon mouth c to form colloid tenon protrusion 23 and form periphery wall portion 22 during luminous tube 13, To using sealed colloid 20 carry out covering cladding to the front of mould group and peripheral side, can not only play the effect of sealing and And lamp plate 10 and thermally conductive backplane 40, which are reinforced, effectively can be shown to thermally conductive panel 30, LED.

The thermally conductive backplane 40 of the present embodiment can use different structure type, such as plate without periphery wall according to the actual situation Shape structural body or the shell-like structure body for having periphery wall；Preferably, the thermally conductive backplane 40 of the present embodiment is using no week The plate-like structure of side wall needs injecting glue tenon mouth c at this time while running through the avris distribution of thermally conductive backplane 40, and periphery wall portion 22 coat the avris of the avris of thermally conductive panel 30, the avris of circuit board 11 and thermally conductive backplane 40 simultaneously, and are formed in injecting glue close During adhesive body 20, back side bound edge portion 24 can be formed at the rear surface edge of thermally conductive backplane 40 simultaneously using injecting glue tenon mouth c (that is: being equivalent to sealed colloid 20 includes back side bound edge portion 24), and back side bound edge portion 24 is connected with the rear side in periphery wall portion 22 It is integrated.As a result, using sealed colloid 20 can the edge of front surface to mould group, peripheral wall surfaces and rear surface form covering cladding knot Structure, while guaranteeing the structural stability and leakproofness of entire mould group, but also the rear surface of thermally conductive backplane 40 has foot Enough and exposed surface area, the good heat radiating for mould group provide condition.

For the performance for further enhancing entire mould group, the display module of the present embodiment further includes simultaneously through thermally conductive panel 30, circuit board 11 and thermally conductive backplane 40 are distributed and around the injecting glue via hole (not shown)s of every heating column 50 distribution, right During the progress injecting glue of sealed colloid 20 is molding, liquid sizing material can flow to the back surface side of thermally conductive backplane 40 via injecting glue via hole And ultimately form the heating column end face covering portion 25 for being filled in injecting glue via hole and covering the backside of heating column 50.Pass through as a result, Heating column 50 is formed by mold and is covered to thickness, the width of heating column end face covering portion 25, realizes the encapsulation to heating column 50, To avoid heating column 50 by the erosion of outside air.It certainly, can be by it along mould when carrying out actual arrangement to heating column 50 Profile avris, the contour path of the second colloid seal line network 45 and the contour path of the first colloid seal line network 43 of group are set It sets, so as to be directly formed in thermally conductive backplane 40 by injecting glue via hole during molding to 20 injecting glue of sealed colloid Heating column end face covering portion 25, the second colloid seal line network 45 and the first colloid seal line network 43 that sealed colloid 20 is linked together Or directly using the second colloid seal line network 45 or the first colloid seal line network 43 as heating column end face covering portion 25.

In addition, to enhance the performance of entire mould group, the thermally conductive panel 30 and/or thermally conductive backplane of the present embodiment to the maximum extent 40 can be used that aluminium sheet is made to form after punching press and surface is through anode oxidation process+blackening processing plate-like structure；And it is thermally conductive Column 50 is then preferably copper structural body.As a result, thermally conductive panel 30 and thermally conductive backplane 40 have thermally conductive, nonconducting performance, And copper heating column 50 is then conducive to carry out heat conduction with thermally conductive backplane 40 in thermally conductive panel 30.

In conclusion the LED display unit mould group of the present embodiment efficiently solves LED by the improvement of process structure Chronic illness existing for outdoor display screen industry many years, specifically:

1, thermally conductive panel 30 is made using metal materials such as aluminium and thermally conductive backplane 40 is equivalent to and constitutes clamping LED shows the bimetallic thermally conductive sheet of lamp plate 10, since the structural arrangement method that three is overlapped mutually may make LED to show lamp plate 10 Or even entire mould group has the rigidity of good flatness and enhancing；Meanwhile by certain amount and in the thermally conductive of regular distribution Column 50 locks bimetallic thermally conductive sheet, ensure that entire mould group has the good internal capacity of heat transmission, and to outside With enough cooling surface areas, the heat dissipation for mould group provides structure channel, efficiently avoids under traditional handicraft structure The series of problems that display unit mould group occurs due to heat dissipation is bad or can not radiate.

2, using the lamp point convex ribs position 32 being set on thermally conductive panel 30, it can not only play and keep the sun off with Lifting Modules group The effect displayed contrast, and since it is packaged in 20 inside of sealed colloid, the effect of internal stiffeners is also played, Frontal impact can effectively be slowed down to destroy mechanical damage caused by LED light point, eradicated existing plastic cement display module plastic rubber surface Cover easy uplift and deformation, defect easy to damage.

3, it is presented using the liquid such as colored transparent silica gel sizing material through injecting glue, the molding sealed colloid 20 of curing mold Pitted skin, lines and muscle position etc. design feature, the effect that mould group goes out light and display can be effectively improved；And pass through encapsulating or note The heating column end face covering portion 25 of gum forming, the second colloid seal line network 45 and first colloid seal line network 43 etc. are equivalent to secondary Bimetal leaf, LED are shown that lamp plate 10 is riveted by a plurality of rubber column gel column with glue, mould group is made integrally to be provided with higher intensity and more Good sealing performance, especially the second colloid seal line network 45 and the first colloid seal line network 43 are equivalent in thermally conductive backplane 40 The flexible glue body seal line that can play the role of closing seam when assembling to mould group is formd, the assembly of mould group is further improved The sealed waterproof effect of part.

4, the sky enclosed using the second colloid seal line network 45 and internal fixture nut 44 in the back side of thermally conductive backplane 40 Between for outer data line, power supply line etc. of connecting of LED display unit mould group provide sealing space.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported Used in other related technical areas, it is also included in the patent protection scope of the utility model.

Claims (13)

1. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups, it includes that LED shows that lamp plate, the LED show that lamp plate includes Circuit board, the IC chip being mounted in the rear surface of circuit board and several are mounted on the front surface of circuit board and each other in battle arrays The LED light tube of column distribution；It is characterized by:

It further includes that sealed colloid, thermally conductive panel, thermally conductive backplane and several heating columns, the circuit board are stacked and are held on and lead Between hot panel and thermally conductive backplane, on the thermally conductive panel and position corresponding with every LED luminous tube offers a confession LED light tube through the lamp body via hole of distribution, lock after sequentially running through thermally conductive backplane and circuit board by the front end of the heating column It is fixed on thermally conductive panel, the sealed colloid is covered on thermally conductive panel and thermal conductive surface plate and LED are at least shown lamp plate cladding It is integrated.

2. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: described thermally conductive On panel and position corresponding with every heating column is provided with the first convex rib position, the crowning of first convex rib position Positioned at the front-surface side of circuit board, the front end of the heating column is locked on the first convex rib position.

3. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as claimed in claim 2, it is characterised in that: described thermally conductive Column include the back-surface side for being connected to thermally conductive backplane nut portion, by the central area in nut portion make it is axially extending after molding and it is same When the guide pillar part that is distributed through thermally conductive backplane and circuit board and by the front end of guide pillar part make it is axially extending after form and lock In the silk tooth portion on the first convex rib position；The length of the guide pillar part not less than circuit board thickness and thermally conductive backplane thickness it With, and the front end face of the guide pillar part and the crowning of the first convex rib position offset, the diameter in silk tooth portion is less than guide pillar part Diameter.

4. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: described thermally conductive A lamp point convex ribs position is provided on panel and positioned at the avris of each lamp body via hole.

5. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as claimed in claim 4, it is characterised in that: the sealing The front surface of colloid is that the front surface of pitted skin and/or the sealed colloid is formed with for that will embark on journey or in a row the lamp point that is distributed is convex Muscle position covers the reflection-proof lines being integrated.

6. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: the circuit Several thermally conductive copper posts being distributed through circuit board, rear end face and the thermally conductive backplane phase of the thermally conductive copper post are additionally provided on plate It supports.

7. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: described thermally conductive The second convex rib position for accommodating IC chip is provided on backboard, the crowning of second convex rib position is located at thermally conductive backplane Back-surface side, and be provided on the crowning of second convex rib position several each other be in array distribution external fixations Nut.

8. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as claimed in claim 7, it is characterised in that: described thermally conductive It is provided with the circumferential surface for coating external fixture nut in the rear surface of backboard and edge is joined end to end by several external fixture nuts It is formed by the first colloid seal line network of cyclic path distribution afterwards.

9. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as claimed in claim 8, it is characterised in that: described thermally conductive Several are additionally provided in the rear surface of backboard and in the enclosing face domain of the first colloid seal line network each other in array point The internal fixture nut of cloth is provided with the circumferential surface for coating internal fixture nut in the rear surface of the thermally conductive backplane and along by several Internally fixture nut join end to end after be formed by cyclic path be distributed the second colloid seal line network；

It further includes the connecting terminal box being locked in thermally conductive backplane by internal fixture nut, and the connecting terminal box at least wraps It includes the conductive base plate being stacked and placed in thermally conductive backplane and assembles the box body being integrated with conductive base plate, outside the box body in front surface It is provided with radiating fin.

10. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: it further includes , simultaneously through the injecting glue tenon mouth of the avris of the avris of thermally conductive panel and circuit board distribution, the sealed colloid includes covering for several It the main surface domain portion that is placed on thermally conductive panel and is formed in the periphery in main surface domain portion and at least while coats thermally conductive panel The periphery wall portion of the avris of avris and circuit board is formed with the colloid tenon being filled in injecting glue tenon mouth in periphery wall portion Protrusion.

11. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as claimed in claim 10, it is characterised in that: the note Jiao Sunkou is also distributed through the avris of thermally conductive backplane simultaneously, and periphery wall portion coats avris, the circuit of thermally conductive panel simultaneously The avris of plate and the avris of thermally conductive backplane, and the sealed colloid further includes being formed in the rear side in periphery wall portion and coating thermally conductive The back side bound edge portion at the rear surface edge of backboard.

12. a kind of double thermally conductive sheet clamping plate type LED display unit mould groups as described in claim 1, it is characterised in that: it further includes Be distributed and surrounds through thermally conductive panel, circuit board and thermally conductive backplane simultaneously injecting glue via hole that every heating column is distributed and via Injecting glue via hole and sealed colloid are linked together and coat the heating column end face covering portion of the backside of heating column.

13. such as a kind of double thermally conductive sheet clamping plate type LED display unit mould groups of any of claims 1-12, feature exists In: the thermally conductive panel and/or thermally conductive backplane be formed after aluminium sheet makees punching press and surface through anode oxidation process+blackening at The plate-like structure of reason；The heating column is copper structural body.