CN202003646U - Light emitting diode (LED) digital display screen - Google Patents
Light emitting diode (LED) digital display screen Download PDFInfo
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- CN202003646U CN202003646U CN2011200575886U CN201120057588U CN202003646U CN 202003646 U CN202003646 U CN 202003646U CN 2011200575886 U CN2011200575886 U CN 2011200575886U CN 201120057588 U CN201120057588 U CN 201120057588U CN 202003646 U CN202003646 U CN 202003646U
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- display screen
- led
- pin
- plastic shell
- printed circuit
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Abstract
The utility model discloses a light emitting diode (LED) digital display screen which aims to solve the defect that sealant is wasted because a traditional product is too thick. The LED digital display screen comprises a display screen shell, a printed circuit board and a plurality of LED wafers, wherein the display screen shell is provided with a plurality of LED ray halfpace-shaped reflection cavities for displaying digits and graphs; the printed circuit board comprises a printed circuit, a pin and a plurality of LED pads, wherein the position of each pad corresponds to the center of the reflection cavities on the display shell one by one; and the LED wafers are respectively stuck on each pad by conductive adhesive and are electrically connected by leads. The LED digital display screen is characterized in that the LED digital display screen is also provided with a plastic sheet having the same size as the display screen shell, wherein the plastic sheet is provided with rectangular through holes having the same size as the rectangles on the bottoms of the reflection cavities of the display screen shell, i.e. adhesive containing cavities; each adhesive containing cavity is respectively filled with quantitative sealant coated with an LED wafer; the plastic sheet and the printed circuit board are located and riveted by locating pins; and the fixed assembly is assembled and riveted with the display screen shell by the locating pins on the display screen shell.
Description
Technical field
The utility model relates to a kind of display screen, especially a kind of LED charactron and LED digital display screen.
Background technology
Traditional LED digital display screen comprises display screen plastic shell, printed circuit board (PCB) and the brilliant unit of a plurality of LED of sheet, wherein the display screen plastic shell be provided with a plurality of display digits and figure LED light trapezoidal shape reflection cavity and at least 2 register pins of lower convexity; Printed circuit board (PCB) comprises the P.e.c. that is printed on the substrate, the pin that connects external drive circuit, a plurality of LED pads, pad is connected to corresponding pin obtaining the voltage for the work of the brilliant unit of LED by P.e.c., and the center of the reflection cavity of the LED light trapezoidal shape that is provided with on the position of each pad and the display screen plastic shell is corresponding one by one; The brilliant unit of a plurality of LED is affixed on respectively on each pad and with lead with conducting resinl and is electrically connected; And above-mentioned display screen plastic shell and the assembling of use in printed circuit board register pin location and riveted are fixed.At last, inject from the below of display screen plastic shell with fluid sealant, LED is brilliant first in printed circuit board (PCB) sealing and fixing together (referring to accompanying drawing 1f) in the display screen plastic shell back side.The defective one of the LED digital display screen of this kind structure is that the general thickness of LED digital display screen is thicker, is unsuitable for dwindling the volume of the final products that use the LED digital display screen; The 2nd, the use amount of fluid sealant is big, wastes more fluid sealant.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency that overcomes traditional LED digital display screen, and provide a kind of general thickness thin, the use fluid sealant is few, and can control the amount unanimity that coats the brilliant first fluid sealant of each LED automatically, thereby make the brilliant unit of each LED see through the uniform LED digital display screen of light luminance that fluid sealant comes out.
In order to realize above-mentioned purpose, can adopt following technical scheme: the LED digital display screen of this programme is the same with prior art to comprise the brilliant unit of display screen plastic shell, printed circuit board (PCB) and a plurality of LED of sheet, wherein the display screen plastic shell be provided with a plurality of display digits and figure LED light trapezoidal shape reflection cavity and at least 2 register pins of lower convexity; Printed circuit board (PCB) comprises the P.e.c. that is printed on the substrate, the pin that connects external drive circuit, a plurality of LED pads, pad is connected to corresponding pin obtaining the voltage for the work of the brilliant unit of LED by P.e.c., and the center of the reflection cavity of the LED light trapezoidal shape that is provided with on the position of each pad and the display screen plastic shell is corresponding one by one; The brilliant unit of a plurality of LED is affixed on respectively on each pad and with lead with conducting resinl and is electrically connected; Its improvement is to also have:
A sheet onesize with the display screen plastic shell of sheet, this sheet is provided with the onesize rectangular through-hole of reflection cavity bottom rectangle of the LED light trapezoidal shape of a plurality of display digits that are provided with the display screen plastic shell and figure, this rectangular through-hole is default appearance glue chamber, and each volume that holds the glue chamber equates that each holds the scheduled volume fluid sealant that is filled with the brilliant unit of LED of coating in the glue chamber respectively;
On this sheet, also be provided with at least 2 register pin and at least 2 dowel holes to lower convexity;
Also be provided with on the above-mentioned printed circuit board (PCB) pin-and-hole corresponding with register pin on the sheet and with the display screen plastic shell on the corresponding pin-and-hole of register pin that is provided with;
Assembling of register pin location and riveted on above-mentioned sheet and the use in printed circuit board sheet are fixed, and the assembly after fixing is assembled by register pin on the display screen plastic shell and display screen plastic shell and riveted is fixed.
Further, the optional SMD pin of pin or the contact pin type pin that connect external drive circuit in the above-mentioned printed circuit board (PCB).
Further, also has a translucent LED display diaphragm, this LED display diaphragm sticks on the upper surface of display screen plastic shell, be printed with the various numerals that design and/or the transmission region of figure on the LED display diaphragm, the reflection cavity of a plurality of display digits that are provided with on the transmission region of this numeral and/or figure and the display screen plastic shell and the LED light trapezoidal shape of figure is corresponding one by one.
The mode of this LED digital display screen assembling has two kinds:
A kind of fit is: earlier the brilliant unit of LED is affixed on respectively with conducting resinl on each pad of printed circuit board (PCB) and with lead and is electrically connected, again assembling of the location of the register pin on sheet and the use in printed circuit board sheet and riveted are fixed, then utilize programmable automatically dropping glue machine, each that its Glue dripping head is aimed at one by one that sheet is provided with from top holds glue chamber, injects default quantitative fluid sealant the brilliant unit of LED is coated; At last this assembly is fixed by assembling of the register pin on the display screen plastic shell and display screen plastic shell and riveted.At last, if desired, again the LED display diaphragm is sticked on the end face of display screen plastic shell and get final product.
Another kind of fit is: utilize the register pin on the sheet that itself and printed circuit board (PCB) assembling and riveted are fixed earlier, utilize again the brilliant unit of programmable subsides LED automatically labelling machine the brilliant unit of LED be affixed on each pad of printed circuit board (PCB) and with lead with conducting resinl respectively be electrically connected, then utilize programmable automatically dropping glue machine, each that its Glue dripping head is aimed at one by one that sheet is provided with from top holds glue chamber, injects default quantitative fluid sealant the brilliant unit of LED is coated; At last this assembly is fixed by assembling of the register pin on the display screen plastic shell and display screen plastic shell and riveted.At last, if desired, again the LED display diaphragm is sticked on the end face of display screen plastic shell and get final product.
The beneficial effects of the utility model are:
1, because the design feature of LED digital display screen of the present utility model, thickness that can attenuate display screen plastic shell, therefore dwindled the integral thickness of LED digital display screen, if adopted SMD printed circuit board (PCB), then can make the overall volume of LED digital display screen compact more, so that the design and installation of the digital product of compact conformation;
2, because designed each holds the big or small identical of glue chamber on the sheet, and put glue process can adopt programmable automatically dropping glue machine from the top the quantitative appearance glue chamber mid point glue to each sheet, so saved the consumption of fluid sealant greatly, reduced cost; Especially because to be coated on the amount of the brilliant first external seal glue of each LED consistent relatively, thereby it is even to make the brilliant unit of each LED see through the light luminance that fluid sealant comes out, and has improved the display effect of LED digital display screen.
If 3, the LED digital display screen has added translucent LED display diaphragm, then diaphragm can play the effect of astigmatism, makes the light of LED emission see through the transmission region of diaphragm, makes the literal that will show or figure luminous and seem more clear.
In order to make the utility model be convenient to understand, it is described further below by drawings and Examples with more clear.
Description of drawings
Fig. 1 a is that the master of embodiment 1 of the present utility model looks synoptic diagram; Fig. 1 b is the schematic rear view of Fig. 1 a; Fig. 1 c is the A-A diagrammatic cross-section of Fig. 1 b; Fig. 1 d is the B-B diagrammatic cross-section of Fig. 1 b; Fig. 1 e is the A portion enlarged diagram of Fig. 1 c; Fig. 1 f is the some glue part-structure enlarged diagram of traditional LED digital display screen.
Fig. 2 is the decomposing schematic representation of Fig. 1 c.
Fig. 3 a is that the master of the display screen plastic shell in the foregoing description looks synoptic diagram; Fig. 3 b is the schematic rear view of Fig. 3 a; Fig. 3 c is the B-B diagrammatic cross-section of Fig. 3 b; Fig. 3 d is the A-A diagrammatic cross-section of Fig. 3 b; Fig. 3 e is the B portion enlarged diagram of Fig. 3 d.
Fig. 4 a is the elevational schematic view of the sheet in the foregoing description; Fig. 4 b is the D-D cross-sectional schematic of Fig. 4 a; Fig. 4 c is the C-C cross-sectional schematic of Fig. 4 a; Fig. 4 d is the B portion enlarged diagram of Fig. 4 c; Fig. 4 e is the E portion enlarged diagram of Fig. 4 a.
Fig. 5 is that the master of the printed circuit board (PCB) in the foregoing description looks synoptic diagram.
Fig. 6 is that the master of the LED display diaphragm among the embodiment 2 looks synoptic diagram.
Embodiment
Embodiment 1, referring to Fig. 1 one Fig. 5.The LED digital display screen of present embodiment comprises display screen plastic shell 40, printed circuit board (PCB) 10 and the brilliant unit 20 of a plurality of LED of sheet, wherein display screen plastic shell 40 be provided with a plurality of display digits and figure LED light trapezoidal shape reflection cavity 42 and at least 2 register pins 41 of lower convexity; Printed circuit board (PCB) 10 comprises the P.e.c. (not shown) that is printed on the substrate, the pin 13 that connects external drive circuit, a plurality of LED pad 14 (see figure 5)s, pad 14 is connected to corresponding pin 13 obtaining the voltages for 20 work of the brilliant unit of LED by P.e.c., and the center of the reflection cavity 42 of the LED light trapezoidal shape of setting is corresponding one by one on the position of each pad 14 and the display screen plastic shell 40; The brilliant unit of a plurality of LED 20 usefulness conducting resinls are affixed on respectively on each pad 14 and with lead and are electrically connected; Also have in addition:
A sheet 30 onesize with the display screen plastic shell 40 of sheet, this sheet 30 is provided with the onesize rectangular through-hole (is the same referring to long b of rectangle and wide a among Fig. 3 b and Fig. 4 e) of reflection cavity 42 bottom rectangle of the LED light trapezoidal shape of a plurality of display digits that are provided with display screen plastic shell 40 and figure, this rectangular through-hole is default appearance glue chamber 33, and each volume that holds glue chamber 33 equates that each holds the scheduled volume fluid sealant 60 that is filled with the brilliant unit 20 of LED of coating in the glue chamber 33 respectively; On this sheet 30, also be provided with 5 register pin 31 and 5 dowel holes 32 and (see Fig. 4 a) to lower convexity;
Also be provided with on the above-mentioned printed circuit board (PCB) 10 corresponding with register pin 31 on the sheet 30 5 pin-and-holes 11 and with display screen plastic shell 40 on 5 corresponding pin-and-hole 12 (see figure 5)s of the register pin that is provided with 41;
Above-mentioned sheet 30 is fixed with 31 location assemblings of 5 register pins and riveted on the printed circuit board (PCB) 40 usefulness sheets 30, and the assembly after fixing is fixed by 5 register pins on the display screen plastic shell 40 41 and 40 assemblings of display screen plastic shell and riveted.
Secondly, the printed circuit board (PCB) in the present embodiment can adopt SMD pin, also can adopt the contact pin type pin.
Embodiment 2, referring again to above-mentioned accompanying drawing and Fig. 6.The difference of present embodiment and embodiment 1 only is translucent LED display diaphragm 50 in addition, this LED display diaphragm 50 sticks on the upper surface of display screen plastic shell 40, be printed with the various numerals that design and/or the transmission region 51,52,53,54 of figure on the LED display diaphragm 50, the reflection cavity 42 of a plurality of display digits that are provided with on the transmission region of this numeral and/or figure and the display screen plastic shell 40 and the LED light trapezoidal shape of figure is corresponding one by one.
It below only is the preferred embodiment of the utility model; comprise LED digital display screen and LED charactron; but it does not limit practical range of the present utility model, and the equivalent variations and the modification that promptly do not depart from claim of the present utility model and done must belong to the protection domain of the utility model.
Claims (3)
1. LED digital display screen, the display screen plastic shell, printed circuit board (PCB) and the brilliant unit of a plurality of LED that comprise sheet, wherein the display screen plastic shell be provided with a plurality of display digits and figure LED light trapezoidal shape reflection cavity and at least 2 register pins of lower convexity; Printed circuit board (PCB) comprises the P.e.c. that is printed on the substrate, the pin that connects external drive circuit, a plurality of LED pads, pad is connected to corresponding pin obtaining the voltage for the work of the brilliant unit of LED by P.e.c., and the center of the reflection cavity of the LED light trapezoidal shape that is provided with on the position of each pad and the display screen plastic shell is corresponding one by one; The brilliant unit of a plurality of LED is affixed on respectively on each pad and with lead with conducting resinl and is electrically connected; It is characterized in that also having:
A sheet onesize with the display screen plastic shell of sheet, this sheet is provided with the onesize rectangular through-hole of reflection cavity bottom rectangle of the LED light trapezoidal shape of a plurality of display digits that are provided with the display screen plastic shell and figure, this rectangular through-hole is default appearance glue chamber, and each volume that holds the glue chamber equates that each holds the scheduled volume fluid sealant that is filled with the brilliant unit of LED of coating in the glue chamber respectively; On this sheet, also be provided with at least 2 register pin and at least 2 dowel holes to lower convexity;
Also be provided with on the above-mentioned printed circuit board (PCB) pin-and-hole corresponding with register pin on the sheet and with the display screen plastic shell on the corresponding pin-and-hole of register pin that is provided with;
Assembling of register pin location and riveted on above-mentioned sheet and the use in printed circuit board sheet are fixed, and the assembly after fixing is assembled by register pin on the display screen plastic shell and display screen plastic shell and riveted is fixed.
2. LED digital display screen according to claim 1 is characterized in that the pin of connection external drive circuit in the described printed circuit board (PCB) is SMD pin or contact pin type pin.
3. LED digital display screen according to claim 1 and 2, it is characterized in that translucent LED display diaphragm in addition, this LED display diaphragm sticks on the upper surface of display screen plastic shell, be printed with the various numerals that design and/or the transmission region of figure on the LED display diaphragm, the reflection cavity of a plurality of display digits that are provided with on the transmission region of this numeral and/or figure and the display screen plastic shell and the LED light trapezoidal shape of figure is corresponding one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200575886U CN202003646U (en) | 2011-03-07 | 2011-03-07 | Light emitting diode (LED) digital display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200575886U CN202003646U (en) | 2011-03-07 | 2011-03-07 | Light emitting diode (LED) digital display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003646U true CN202003646U (en) | 2011-10-05 |
Family
ID=44706378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200575886U Expired - Fee Related CN202003646U (en) | 2011-03-07 | 2011-03-07 | Light emitting diode (LED) digital display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003646U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137053A (en) * | 2011-11-28 | 2013-06-05 | 亿光电子工业股份有限公司 | Seven-section displayer |
| CN103827947A (en) * | 2012-07-18 | 2014-05-28 | G思玛特有限公司 | Transparent electronic display board and method for manufacturing same |
| CN105225613A (en) * | 2015-09-17 | 2016-01-06 | 中山市佑阳光电科技有限公司 | Touch LED display and display device |
-
2011
- 2011-03-07 CN CN2011200575886U patent/CN202003646U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137053A (en) * | 2011-11-28 | 2013-06-05 | 亿光电子工业股份有限公司 | Seven-section displayer |
| CN103137053B (en) * | 2011-11-28 | 2016-07-06 | 亿光电子工业股份有限公司 | seven-segment display |
| CN103827947A (en) * | 2012-07-18 | 2014-05-28 | G思玛特有限公司 | Transparent electronic display board and method for manufacturing same |
| CN103827947B (en) * | 2012-07-18 | 2015-09-02 | G思玛特有限公司 | Transparent display screen and manufacture method thereof |
| CN105225613A (en) * | 2015-09-17 | 2016-01-06 | 中山市佑阳光电科技有限公司 | Touch LED display and display device |
| CN105225613B (en) * | 2015-09-17 | 2018-06-12 | 中山市佑阳光电科技有限公司 | Touch LED display and display equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140307 |