CN202422682U

CN202422682U - LED (Light Emitting Diode) display screen capable of being spliced

Info

Publication number: CN202422682U
Application number: CN2011205182737U
Authority: CN
Inventors: 王占坡; 刘丛利
Original assignee: BAZHOU XUFENG PHOTOELECTRIC TECHNOLOGY CO LTD
Current assignee: BAZHOU XUFENG PHOTOELECTRIC TECHNOLOGY CO LTD
Priority date: 2011-12-13
Filing date: 2011-12-13
Publication date: 2012-09-05
Anticipated expiration: 2021-12-13

Abstract

The utility model relates to an LED (Light Emitting Diode) display screen capable of being spliced, comprising a panel, LED lamps, a circuit board, a control chip and a power supply, wherein the panel consists of a plurality of transparent grids; each LED lamp is located at a grid node; the circuit board is used for loading the LED lamps and is fixed on the panel; and the control chip and the power supply are fixed on the panel. The LED display screen is characterized in that the LED lamp at each node consists of a green light LED, a blue light LED and two red LEDs; the two red LEDs are connected in series to form a branch circuit and then connected with two branch circuits of the green light LED and the blue light LED in parallel; and each group of LED display screens is provided with a group of connecting devices. The LED display screen capable of being spliced has the advantages of rich color of mixed light rays without aberration, good light mixing effect, simplicity in circuit design, easiness for circuit wiring and no influence on the appearance design of the display screen, meanwhile, as the plurality of grids are arranged on the panel, the wind resistance and heat dispersion performances are improved when the LED display screen is used outdoors by a user, and each group of LED display screens can be spliced infinitely to expand a display area.

Description

A kind of sliceable LED display

Technical field

The utility model belongs to illumination indication field, refers in particular to a kind of LED display.

Background technology

The use of display screen in current information society be nothing to be surprised at, and the existing conventional LED display is to be fixed on the flat board by the some LED that arrange according to certain rules, and pattern or Word message are formed in the light on and off of LED follow procedure.Previous LED display all is to adopt monochromatic LED, and display screen now generally all is to adopt the LED of three primary colours (RGB) as light source, carries out mixed light and obtains the display effect of multiple different colours.And present red-light LED WV generally all is lower than the WV of green glow and blue-ray LED; The WV of green glow and blue-ray LED then is more or less the same; Therefore when adopting red-green-blue to carry out mixed light; In order to make all LED can both operate as normal, just need two cover feed circuit respectively red-light LED and green glow, blue-ray LED to be supplied power, like this some trouble that will become of the design on circuit; And when the structure of design display screen, also to consider this problem, and make that the structure of display screen is unsatisfactory.In addition, when display screen when adopting red-green-blue to carry out mixed light, obtain positive white light if will mix, the ruddiness proportion must be higher than green glow and blue light.Therefore to carry out mixed light be not enough to single ruddiness, green glow and blue-ray LED; The structure of mixed light can only be that light color has deviation like this, and when blending together other color of light, the color and luster of light all has certain shortcoming; In addition, relatively poor to the link stationarity between LED panel and the panel.

Summary of the invention

The utility model provides a kind of LED display in view of above-mentioned technical matters, and it can solve the relatively poor problem of link stationarity between the existing existing mixed light weak effect of LED display, circuit and structural design trouble and panel simultaneously.

In order to achieve the above object; The technical scheme that the utility model adopted is following: a kind of LED display; Comprise the panel of forming by a plurality of penetrating grids; Be positioned at the LED lamp at grid node place, carry the LED lamp and be fixed in the circuit board on the panel, and be fixed in control chip and power supply on the panel; It is characterized in that: the LED lamp at said each node place all is made up of a green light LED, a blue-ray LED and two red-light LEDs, and two red-light LEDs are composed in series after the branch circuit more parallelly connected with green light LED, two branch circuits of blue-ray LED; Each grid node place of said panel is provided with through hole, and the LED lamp is positioned at this through hole and circuit board is attached at back side of panel; All be in series with current-limiting protection resistance respectively in said three branch circuits; Said four LED are quadrangular array, and said two red LED are positioned at two diagonal angles of four LED institute quadrangularlies; Said control chip and power supply are fixed in the back side of panel; The side of said panel is provided with coupling arrangement, when needs enlarge LED panel area, and can be through linked set with firm being linked to together of a plurality of panels.

Compare with the existing conventional LED display; Each LED lamp of the utility model all adopts two red-light LEDs and a green LED light, a blue-ray LED to carry out mixed light, has improved the shared ratio of ruddiness, therefore can obtain positive white light; When needs are mixed into other color of light; Color and luster is abundant, can not produce deviation, and mixed light is effective; Simultaneously, with parallelly connected with green light LED, blue-ray LED again after the series connection of two red LED, three needed voltage phase difference of branch circuit work of composition are little like this; Cooperate current-limiting protection resistance again, all like this LED lamp work only needs cover feed circuit, and circuit design is simple; The laying of circuit also is easy to, and also can not have influence on the appearance design of display screen, and panel is provided with a plurality of grids simultaneously; Wind resistance and heat dispersion when having strengthened outdoor use; Simultaneously, the design of coupling arrangement can solve the worry that screen can not extend, be difficult for transportation.

Description of drawings

Fig. 1 is the external form synoptic diagram of the utility model; Fig. 2 is the decomposing schematic representation of the utility model; Fig. 3 is the LED lamp CC synoptic diagram of the utility model.

Wherein (1) is panel, and (2) are circuit board, and (3) are the LED lamp, and (4) are power supply, and (12) are gusset, and (13) are through hole, and (14) are coupling arrangement.

Embodiment

The utility model is made up of panel (1), circuit board (2), LED lamp (3), control chip (not shown), power supply (4) and coupling arrangement; A plurality of penetrating grids are arranged on the panel (1); Be to wear as if thousand holes (11) through on the base plate of a casing, digging, remainder forms crisscross many gussets (12), and is as shown in Figure 1; Several holes (11) and gusset (12) have then formed a plurality of penetrating grids; At the grid node place, the place of promptly intersecting between the gusset (12) all is provided with through hole (13), and is plum blossom shape.Shown in figure (2), several LED lamps (3) are arranged and are welded on the circuit board (2), and the gusset on many circuit board (2) parallel arranged and the panel (1) is suitable; LED lamp (3) is made up of four LED; I.e. two red-light LEDs (31), a blue-ray LED (32) and a green light LED (33), two red-light LEDs (31) are composed in series after the branch circuit more parallelly connected with blue-ray LED (32), (33) two branch circuits of green light LED, as shown in Figure 3; Also be in series with a current-limiting protection resistance (5) in each branch circuit; This current-limiting protection resistance (5) is welded on circuit board (2) back side, and four LED in the LED lamp (3) are arranged in quadrangle form, are suitable for the quincunx through hole on the panel (1); For more attractive in appearance, two red-light LEDs (31) are positioned on the tetragonal diagonal angle to be arranged.Control chip is welded on circuit board (2) back side; The demonstrations such as flicker of regulating LED lamp (3) change; After being installed on circuit board (2) on the last corresponding gusset of panel (1), again power supply (4) is fixedly mounted on the panel (1), circuit board (2) is positioned between power supply (4) and the panel (1).At this moment, LED lamp (3) interts in the through hole (13) on panel (1), and its luminous place is a little more than panel (1) end face, and like figure (1), circuit board (2) then is close on the corresponding with it gusset in panel (1) back side.

The utility model can also be bolted together the polylith panel, and the side of panel is provided with coupling arrangement (14) for this reason, and a plurality of panel sets are dressed up a big display screen.The utility model mixed light light color and luster is abundant, can not produce deviation, and mixed light is effective; Circuit design is simple, and the laying of circuit also is easy to, and also can not have influence on the appearance design of display screen; Simultaneously panel is provided with a plurality of grids, wind resistance and heat dispersion when having strengthened outdoor use.

Claims

1. LED display; Comprise the panel of forming by a plurality of penetrating grids; Be positioned at the LED lamp at grid node place, carry the LED lamp and be fixed in the circuit board on the panel, and be fixed in control chip and power supply on the panel; It is characterized in that: the LED lamp at said each node place all is made up of a green light LED, a blue-ray LED and two red-light LEDs, and two red-light LEDs are composed in series after the branch circuit more parallelly connected with green light LED, two branch circuits of blue-ray LED.

2. LED display according to claim 1 is characterized in that: each grid node place of said panel is provided with through hole, and the LED lamp is positioned at this through hole and circuit board is attached at back side of panel.

3. LED display according to claim 1 is characterized in that: all be in series with current-limiting protection resistance respectively in said three branch circuits.

4. LED display according to claim 1 is characterized in that: said four LED are quadrangular array.

5. a kind of LED display according to claim 4 is characterized in that: said two red LED are positioned at two diagonal angles of four LED institute quadrangularlies.

6. LED display according to claim 1 is characterized in that: said control chip and power supply are fixed in the back side of panel.

7. LED display according to claim 1 is characterized in that: the side of said panel is provided with coupling arrangement.