CN201237864Y - Vehicle-mounted low-power LED display screen - Google Patents
Vehicle-mounted low-power LED display screen Download PDFInfo
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- CN201237864Y CN201237864Y CNU2008200514058U CN200820051405U CN201237864Y CN 201237864 Y CN201237864 Y CN 201237864Y CN U2008200514058 U CNU2008200514058 U CN U2008200514058U CN 200820051405 U CN200820051405 U CN 200820051405U CN 201237864 Y CN201237864 Y CN 201237864Y
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Abstract
The utility model relates to the technical field of LED display screens, in particular to a low-power car LED display screen. The LED display screen comprises a printed circuit board (PCB), an LED, a drive IC, a power input end of the LED and a power input end of the IC, wherein, the LED is inserted on the PCB; a cathode of the LED is connected with the drive IC; the power input end of the LED is connected with an anode of the LED; the power input end of the IC is connected with a base pin of a working power supply of the drive IC. The utility model provides two paths of voltage input ends to supply power for the LED through the independent power input end of the LED. An LED power supply can be regulated according to the voltage required by the lamination of the LED, so the power waste is avoided.
Description
Technical field
The utility model relates to the LED display technical field, relates in particular to a kind of vehicle-mounted low-power LED display.
Background technology
Vehicle LED (Light Emitting Diode, light emitting diode) display applications is extensive, can be used as the caution instrument, show Chinese and English sign, order, warning statement, simple symbol figure, be applicable to public security, recover, various special vehicles such as road administration by LED display; Can be used as the moving advertising board, issue various commercial advertisements, public service ads etc., be applicable to motorbus, Tour Bus etc. by LED display.
Existing vehicle LED display screen, comprise PCB (Printed Circuit Board, printed circuit board (PCB)) plate is plugged in LED and drive IC (integrate circuit, integrated circuit) on the pcb board, the negative pole of LED is connected with drive IC, this display screen has only one road power input, uses one road power supply simultaneously as LED and drive IC power supply, please refer to Fig. 1, be the electrical block diagram of prior art, V
DD=V
LED=5V, V
DDBe IC operating voltage, V
LEDBe the LED driving voltage, and in fact the luminous voltage of LED does not need 5V, only need the 2.1V just can be luminous, connect with LED, reduce the voltage on the LED by resistance R such as red-light LED.From above prior art as can be seen, owing to only provide one road power input, the operating voltage of drive IC is greater than the luminous voltage of LED, reduces the voltage of LED by resistance in series R, and resistance R can the loss electric energy, causes waste of energy.
The utility model content
The utility model provides a kind of vehicle-mounted low-power LED display, and it is the LED power supply by LED power input independently, can avoid waste of energy.
A kind of vehicle-mounted low-power LED display, comprise pcb board, be plugged in LED and drive IC on the pcb board, the negative pole of LED is connected with drive IC, further comprise LED power input and IC power input, the LED power input is connected with the positive pole of LED, and the IC power input is connected with the working power pin of drive IC.
Wherein, the LED that is plugged on the pcb board is red-light LED, yellow light LED or green-yellow light LED, and the LED power input is connected with 2.7V～3.3V power supply.
Wherein, the LED power input is connected with the 3.0V power supply.
Wherein, the LED that is plugged on the pcb board is blue-ray LED or green light LED, and the LED power input is connected with 4.0V～4.3V power supply.
Wherein, the LED power input is connected with the 4.0V power supply.
Wherein, further comprise the LED power supply that is plugged on the pcb board, the LED power input is connected with the LED power supply.
Wherein, the model of drive IC is MBI5024 or MBI5026.
Wherein, the model of drive IC is 74HC595.
From above technical scheme as can be seen, the utility model comprises pcb board, be plugged in LED and drive IC on the pcb board, the negative pole of LED is connected with drive IC, further comprise LED power input and IC power input, the LED power input is connected with the positive pole of LED, and the IC power input is connected with the working power pin of drive IC; The utility model provides the two-way voltage input end, is the LED power supply by LED power input independently, can adjust the LED power supply according to the luminous required voltage of LED, thereby avoid waste of energy.
Description of drawings
Fig. 1 is the electrical block diagram of prior art;
Fig. 2 is the electrical block diagram of the utility model embodiment.
Embodiment
Please refer to Fig. 2, the electrical block diagram for the utility model embodiment is further described the utility model below in conjunction with accompanying drawing.
The vehicle-mounted low-power LED display of present embodiment, comprise pcb board, be plugged in LED and drive IC on the pcb board, the negative pole of LED is connected with drive IC, further comprise LED power input and IC power input, the LED power input is connected with the positive pole of LED, and the IC power input is connected with the working power pin of drive IC.The utility model provides the two-way voltage input end, is the LED power supply by LED power input independently, can adjust the LED power supply according to the luminous required voltage of LED, thereby avoid waste of energy.Particularly concerning automobile power source, the reduction of energy consumption can reduce cost significantly.
The above-mentioned LED that is plugged on the pcb board is red-light LED, yellow light LED or green-yellow light LED, and the LED power input is connected with 2.7V～3.3V power supply.As shown in Figure 2, V
DDBe IC operating voltage, V
LEDBe LED driving voltage, V
LED=LED forward voltage+IC output end voltage+switching tube pressure drop and line loss pressure drop, V
LEDCan be 2.7V～3.3V.In the present embodiment, adopt red-light LED, the LED power input is connected with the 3.0V power supply.
The model of above-mentioned drive IC is MBI5024.MBI5024 is the drive IC that aims at the design of LED Display Panel, and CMOS bit shift register that it is built-in and bolt-lock function can become the input data-switching of serial parallel output data form.MBI5024 has 16 current sources, can provide the steady current amount of 3-45mA with driving LED in each output stage.In the present embodiment, use the 5V power supply to power to MBI5024.
As another embodiment, the above-mentioned LED that is plugged on the pcb board is blue-ray LED or green light LED, and the LED power input is connected with 4.0V～4.3V power supply.Concrete, the LED power input is connected with the 4.0V power supply.
As another embodiment, further comprise the LED power supply that is plugged on the pcb board, the LED power input is connected with the LED power supply, promptly the LED power supply is arranged on the pcb board, and this power supply can change the 3V power supply for 12V, or 24V changes the 3V power supply.The LED power supply is arranged on the energy consumption that can reduce line loss on the pcb board, can reduces production costs on the whole.
Need to prove that the model of drive IC can be MBI5024, also can be for the constant-current driving IC of other model, such as MBI5026, can also be for the constant voltage driving IC of other model, such as 74HC595.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (8)
1. vehicle-mounted low-power LED display, comprise pcb board, be plugged in LED and drive IC on the pcb board, the negative pole of LED is connected with drive IC, it is characterized in that, further comprise LED power input and IC power input, the LED power input is connected with the positive pole of LED, and the IC power input is connected with the working power pin of drive IC.
2. vehicle-mounted low-power LED display according to claim 1 is characterized in that, the described LED that is plugged on the pcb board is red-light LED, yellow light LED or green-yellow light LED, and described LED power input is connected with 2.7V～3.3V power supply.
3. vehicle-mounted low-power LED display according to claim 2 is characterized in that described LED power input is connected with the 3.0V power supply.
4. vehicle-mounted low-power LED display according to claim 1 is characterized in that, the described LED that is plugged on the pcb board is blue-ray LED or green light LED, and described LED power input is connected with 4.0V～4.3V power supply.
5. vehicle-mounted low-power LED display according to claim 4 is characterized in that described LED power input is connected with the 4.0V power supply.
6. vehicle-mounted low-power LED display according to claim 1 is characterized in that, further comprises the LED power supply that is plugged on the pcb board, and described LED power input is connected with the LED power supply.
7. according to any described vehicle-mounted low-power LED display of claim 1 to 6, it is characterized in that the model of described drive IC is MBI5024 or MBI5026.
8. according to any described vehicle-mounted low-power LED display of claim 1 to 6, it is characterized in that the model of described drive IC is 74HC595.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200514058U CN201237864Y (en) | 2008-07-29 | 2008-07-29 | Vehicle-mounted low-power LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200514058U CN201237864Y (en) | 2008-07-29 | 2008-07-29 | Vehicle-mounted low-power LED display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237864Y true CN201237864Y (en) | 2009-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200514058U Expired - Fee Related CN201237864Y (en) | 2008-07-29 | 2008-07-29 | Vehicle-mounted low-power LED display screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN201237864Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916545A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | Display module of energy-saving LED display screen and using method thereof |
| CN105161038A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED module group test circuit |
-
2008
- 2008-07-29 CN CNU2008200514058U patent/CN201237864Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916545A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | Display module of energy-saving LED display screen and using method thereof |
| CN105161038A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED module group test circuit |
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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: 20090513 Termination date: 20140729 |
|
| EXPY | Termination of patent right or utility model |