CN201425824Y

CN201425824Y - LED high-definition advertising screen

Info

Publication number: CN201425824Y
Application number: CN200920129331XU
Authority: CN
Inventors: 左自权; 高留成
Original assignee: Shenzhen Zhongji Hengrun Technology Development Co Ltd
Current assignee: Shenzhen Zhongji Hengrun Technology Development Co Ltd
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2010-03-17
Anticipated expiration: 2019-01-19

Abstract

An LED high- definition advertising screen comprises a plurality of LED groups, a plurality of ICs and a PCB. The ICs are used for driving the LED groups, the PCB comprises a first surface and a second surface corresponding to the first surface, the LEDs are arranged on the first surface, and the ICs are arranged on the second surface. The LED high-definition advertising screen has high heat radiating efficiency, thereby ensuring normal operation of the ICs and the LED groups, prolonging the service life, improving the use efficiency, and finally meeting the requirements for energy conservation and waste reduction and confirming to the national environmental protection policies.

Description

LED high definition advertisement screen

[technical field]

The utility model relates to a kind of LED high definition advertisement screen, particularly a kind of LED high definition advertisement screen with high cooling efficiency.

[background technology]

Now, the high definition advertisement screen of widespread use is that (it adopts LED as display device to the employing light emitting diode for Light Emitting Diode, LED) display screen, is a kind of new screen display technology that base growth is got up with the modern digital electronic technology.Development along with the LED display technique, adopt the high definition advertisement screen to show from original simple literal and develop into various multimedia application such as present literal, image, animation and video, it has high definition, bright in luster, advantage such as the visual angle big, working stability, life-span are long, low in energy consumption.Its these advantages make in its outer indoors demonstration to have irreplaceable effect, for example are widely used in hospital, bank, law court, show room, railway station, square and physical culture hall, are the advertising medias of current domestic and international the best.

See also Fig. 1 to Fig. 3, Fig. 1 is a kind of schematic perspective view of prior art LED high definition advertisement screen, it comprise a printed circuit board (PCB) (Printed CircuitBoard, PCB); Fig. 2 is the front schematic view of the pcb board of LED high definition advertisement screen shown in Figure 1, and Fig. 3 is the schematic rear view of the pcb board of LED high definition advertisement screen shown in Figure 1.This LED high definition advertisement screen 1 comprises LED11, a housing 12, a pcb board 13 and a plurality of chip (IntegratedCircuit, IC) 15 of a plurality of one-tenth array arrangements.

13 one-tenth of this pcb boards are latticed, comprise that many edges laterally reach the PCB circuit bar that longitudinal direction is provided with at interval.Be respectively arranged with four LED11 at this each infall that laterally reaches the PCB circuit bar of longitudinal separation setting, and between these two adjacent infalls, an IC15 be set, be embedded in this pcb board 13, be used for driving these a plurality of LED11.These a plurality of LED11 and these a plurality of IC15 are arranged on the same surface of this pcb board 13 simultaneously, i.e. upper surface, as shown in Figure 2.

This LED high definition advertisement screen further comprises a layer of silica gel 14, is arranged at the upper surface of this pcb board 13, covers the bottom of these a plurality of IC15 and these a plurality of LED11, is used to protect this pcb board 13, and these a plurality of IC15 and these a plurality of LED11 prevent that moisture content from entering.

Another surface at this pcb board 13 is provided with many connecting lines 17, as shown in Figure 3.These many connecting lines 17 are connected to a drive system (figure does not show) to drive these a plurality of LED11.

Since a plurality of IC15 of existing LED high definition advertisement screen 1 and the same surface that a plurality of LED11 is positioned at this pcb board 13, that is, upper surface, and be embedded in this pcb board 13.Therefore, when this LED high definition advertisement screen 1 work, these a plurality of LED11 and these a plurality of IC15 can give off a large amount of heats simultaneously.And this a plurality of IC15 surface also is capped a layer of silica gel 14, can not fine heat radiation so structure causes these a plurality of IC15 and very easily damage, particularly when continuous firing, cause this LED high definition advertisement screen 1 because radiating efficiency difference and can not normally showing.

[utility model content]

For overcoming the defective of prior art LED high definition advertisement screen radiating efficiency difference, the utility model provides a kind of LED high definition advertisement screen with high cooling efficiency.

The technical scheme of the utility model technical solution problem is: a kind of LED high definition advertisement screen is provided, comprise a plurality of LED groups, a plurality of IC and a pcb board, wherein, these a plurality of IC are used for driving this a plurality of LED groups, this pcb board comprises a first surface and a second surface relative with this first surface, these a plurality of LED groups are arranged on this first surface, and these a plurality of IC are arranged on this second surface.

Compared with prior art, the utility model LED high definition advertisement screen will these a plurality of IC and this a plurality of LED be arranged on the relative both sides of this circuit board, can effectively reduce the influence of heat that these a plurality of LED produce to these a plurality of IC.On the other hand, these a plurality of IC are exposed in the air, and when this LED high definition advertisement screen work, the heat that this IC produces can in time leave, and has promoted the radiating efficiency of this LED high definition advertisement screen.Therefore, this LED high definition advertisement screen can guarantee the operate as normal of these a plurality of IC, prolongs its serviceable life.

[description of drawings]

Fig. 1 is a kind of schematic perspective view of prior art LED high definition advertisement screen.

Fig. 2 is the front schematic view of the pcb board of LED high definition advertisement screen shown in Figure 1.

Fig. 3 is the schematic rear view of the pcb board of LED high definition advertisement screen shown in Figure 1.

Fig. 4 is the front side schematic perspective view of first embodiment of the utility model LED high definition advertisement screen.

Fig. 5 is the rear side schematic perspective view of LED high definition advertisement screen shown in Figure 4.

Fig. 6 is the sectional view of LED high definition advertisement screen shown in Figure 4 along the VI-VI line.

Fig. 7 is the front schematic view of pcb board shown in Figure 6.

Fig. 8 is the back synoptic diagram of pcb board shown in Figure 6.

Fig. 9 is the schematic perspective view of second embodiment of the utility model LED high definition advertisement screen.

[embodiment]

Please cooperate with reference to Fig. 4 to Fig. 8, Fig. 4 is the first embodiment schematic perspective view of LED high definition advertisement screen of the present utility model, specifies the structure of LED high definition advertisement screen shown in Figure 4 below in conjunction with Fig. 5 to Fig. 8.This LED high definition advertisement screen 2 is full-color LED high definition advertisement screens, and it comprises a chase 23, a pcb board 29, a water barrier 33 and a Colour drawing board 25.This pcb board 29, this water barrier 33 and this Colour drawing board 25 are cascading, and are contained in this chase 23, as shown in Figure 6.

Please more in the lump with reference to Fig. 5, Fig. 6, this pcb board 29 comprises a plurality of conplane sub-pcb boards 291 that are arranged in, and these a plurality of sub-pcb boards 291 are electrical connected.Each sub-pcb board 291 comprises a first surface 293, one and these first surface 293 opposing second surface 295, a plurality of LED group 21 and a plurality of IC31.

These a plurality of LED organize 21 arrays and are arranged on this first surface 293, constitute a display matrix, are used to show advertising designs such as various literal, picture or animation.Wherein, each LED group 21 constitutes display units (displayunit), as shown in Figure 7, comprises four LED, and its color is respectively 2 redness, 1 green, 1 blueness, perhaps red, green, blue and white.

These a plurality of IC31 are arranged on the second surface 295, and directly are exposed in the air.Wherein, on the every sub-pcb board 291 8 IC31 are arranged, triplex row four row are provided with, and wherein first row is arranged side by side four IC31, and second and third row is provided with two IC31 respectively, as shown in Figure 8.

This Colour drawing board 25 comprises that a plurality of correspondences accommodate the through hole 251 of this a plurality of LED group 21, makes the top light emitting district of these a plurality of LED groups 21 expose to show various advertising designs.The material of this Colour drawing board 25 is an aluminium, but it is away from the various advertising designs of a surface air brushing of pcb board 29, literal, for example " BANK ", as shown in Figure 4.

Please cooperate with reference to Fig. 6, this water barrier 33 is located between this Colour drawing board 25 and this pcb board 29, and promptly surface thereof is close to the first surface 293 of this pcb board 29, and another side is close to the back side of this Colour drawing board 25.These water barrier 33 materials can be silica gel, and whole face covers the first surface 293 of this pcb board 29.This water barrier 33 comprises the opening 331 of a plurality of corresponding LED groups 21, accommodates these a plurality of LED groups 21 in wherein.

This LED high definition advertisement screen 2 also comprises two refrigeratorys 27, and as shown in Figure 5, Fig. 5 is LED high definition advertisement screen 2 a shown in Figure 4 side stereographic map afterwards.This two refrigeratory 27 contiguous these a plurality of IC31 are provided with, and are used for the quick heat radiating of IC31.This two refrigeratory 27 can be fan.When this LED organizes 21 when in running order, this refrigeratory 27 can improve circulation of air speed, reduces the working temperature of LED group 21, improves the radiating efficiency of this LED high definition advertisement screen 2.

In the middle of practical application, the upper surface air brushing of this Colour drawing board 25 has various advertising designs, as character, sign or picture with as advertising.When external ambient light was strong, as daytime, this Colour drawing board 25 can be used to show these characters, sign or picture, and need not give this a plurality of LED group 21 power supplies; And when external ambient light was more weak, as night, power supply can show advertisement character, picture, animation and the video etc. identical or different with Colour drawing board 25 for these a plurality of LED groups 21.Like this, this LED high definition advertisement screen 2 can be in user mode in 24 hours, and only needed to power when externally surround lighting is more weak, so significantly reduced the consumption of electric energy under identical service efficiency, the generation of heat energy.

Compared with prior art, the utility model LED high definition advertisement screen 2 will these a plurality of IC31 and this a plurality of LED groups 21 be separately positioned on first, second relative surface 293,295 of this pcb board 29, so the heat energy that this a plurality of LED group 21 produces and the heat energy of these a plurality of IC31 generations will be dispersed from these pcb board 29 relative both sides respectively, improve the efficient of its heat radiation, and its influence each other reduces simultaneously also.On the other hand, in the middle of the exposed externally air of these a plurality of IC31, but not covered, therefore when these LED high definition advertisement screen 2 work by a layer of silica gel, the heat that these a plurality of IC31 produce can in time exchange in the external environment condition, to promote the radiating efficiency of this LED high definition advertisement screen 2.Therefore, this LED high definition advertisement screen 2 can guarantee the operate as normal of a plurality of LED groups 21 of these a plurality of IC31 and this, prolongs its serviceable life, promotes its service efficiency, accomplishes energy-conservationly to subtract uselessly, meets the environmental protection policy of country.

In addition, be provided with two refrigeratorys 27 at second surface 295 near this LED high definition advertisement screen 2, in order to reduce the residing environment temperature of this a plurality of IC31, the heat energy distribution when accelerating a plurality of LED group 21 work of these a plurality of IC31 and this has further improved the radiating efficiency of this LED high definition advertisement screen 2.

At last, this pcb board 29 is a monoblock circuit board, and cover a water barrier 33 thereon, and can effectively overcome prior art LED high definition advertisement screen 1 because of the seepy question that the opening of latticed pcb board 13 causes, avoided the phenomenon of the interlock circuit short circuit that produces because of leaking.

Fig. 9 is the rear side schematic perspective view of second embodiment of LED high definition advertisement screen of the present utility model.The LED high definition advertisement screen 4 of this second embodiment and the structural similarity of the LED high definition advertisement screen 2 of this first embodiment, difference is: at the second surface 411 near pcb board 41 two air-conditionings 413 are set.Be used for reducing environment temperature, make that the radiating effect of this LED high definition advertisement screen 4 is preferable.

It is described that LED high definition advertisement screen of the present utility model is not limited to above-mentioned embodiment, can be the material of other lightweights and strong hardness as this Colour drawing board.This LED high definition advertisement screen can be single-primary-color LED display screen or dual base color LED display.The quantity of this refrigeratory can be according to suitably increase or minimizing etc. of actual conditions.

Claims

1. LED high definition advertisement screen, comprise a plurality of LED groups, a plurality of IC and a pcb board, wherein, these a plurality of IC are used for driving this a plurality of LED groups, this pcb board comprises a first surface and a second surface relative with this first surface, it is characterized in that: these a plurality of LED groups are arranged on this first surface, and these a plurality of IC are arranged on this second surface.

2. LED high definition advertisement screen as claimed in claim 1 is characterized in that: this pcb board also comprises the sub-pcb board of a plurality of electrical connections, and these a plurality of sub-pcb boards are on same plane.

3. LED high definition advertisement screen as claimed in claim 1 is characterized in that: this LED high definition advertisement screen also comprises a water barrier, and this water barrier covers the first surface of this pcb board, to should a plurality of LED groups being provided with a plurality of through holes.

4. LED high definition advertisement screen as claimed in claim 3, it is characterized in that: this LED high definition advertisement screen also comprises a Colour drawing board, this Colour drawing board covers this water barrier and its to should a plurality of LED groups being provided with a plurality of through holes, exposes the top light emitting portion of these a plurality of LED groups.

5. LED high definition advertisement screen as claimed in claim 1 is characterized in that: this LED high definition advertisement screen also comprises at least one refrigeratory, and this at least one refrigeratory is provided with near this second surface.

6. LED high definition advertisement screen as claimed in claim 3 is characterized in that: the material of this water barrier is a silica gel.

7. LED high definition advertisement screen as claimed in claim 5 is characterized in that: this at least one refrigeratory is a fan.

8. LED high definition advertisement screen as claimed in claim 5 is characterized in that: this at least one refrigeratory is an air-conditioning.

9. LED high definition advertisement screen as claimed in claim 1 is characterized in that: this high definition advertisement screen is one of them of single-primary-color LED display screen, dual base color LED display or full-color LED display screen.