CN202049709U

CN202049709U - LED display strip screen

Info

Publication number: CN202049709U
Application number: CN201120141636XU
Authority: CN
Inventors: 汪人泽
Original assignee: SHENZHEN HUISHITONG SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHENZHEN HUISHITONG SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2011-05-06
Filing date: 2011-05-06
Publication date: 2011-11-23
Anticipated expiration: 2021-05-06

Abstract

The utility model discloses an LED display strip screen, comprising a display dot matrix and a strip screen controller, the strip screen controller is connected with various rows of the display dot matrix via a row driving unit and is connected with various ranks of the display dot matrix via a rank driving unit, the row driving unit comprises row driving tubes, two CMOS tubes are arranged in each row driving tube, each row driving tube is also provided with two control terminals and two output terminal groups, and each output terminal group of each row driving tube is at least connected with two rows of the display dot matrix. The LED display strip screen also comprises a GPRS communication module connected with the strip screen controller via bidirectional communication. In the novel LED display strip screen, due to the design of the row driving unit, the integral circuit structure is simpler, with the display effect not being influenced, and the circuit structure is convenient for maintenance and low in cost. Besides, a wireless communication module is arranged, so the LED display strip screen is suitable for popularization and application in a taxi.

Description

A kind of LED display strip screen

Technical field

The utility model relates to a kind of LED display strip screen, particularly a kind of LED display strip screen that is fit to be installed on the taxi.

Background technology

Existing LED display strip screen driving circuit relative complex, cost height not only, and be not easy to maintenance, in addition, existing LED display strip screen does not generally have the remote download function, therefore, is not suitable for applying on a large amount of taxis.

The utility model content

The purpose of this utility model is to provide a kind of circuit structure simple LED display strip screen that is fit to be installed on the taxi.

The technical solution adopted in the utility model is: a kind of LED display strip screen, comprise and show dot matrix and bar screen controller, described screen controller passes through row driver element and each the row control linkage that shows dot matrix, and passes through row driver element and each the row control linkage that shows dot matrix; Described capable driver element comprises that inside is the capable driving tube with two control ends and two groups of output terminals of two CMOS pipes, every group of output terminal of each row driving tube at least with show dot matrix in two row drive and be connected; Described LED display strip screen also comprises the GPRS communication module that is connected with bar screen controller both-way communication.

Preferably, described demonstration dot matrix has 16 row, and described capable driver element comprises a slice three or eight code translators and four described capable driving tubes; Three gating output terminals of described screen controller are corresponding to be electrically connected with three input ends of three or eight code translators, eight output terminals of described three or eight code translators and totally eight corresponding one by one electrical connections of control end of four capable driving tubes, the corresponding driving with 16 row that show dot matrix of eight groups of output terminals of four capable driving tubes is connected, every group of output terminal correspondence two row wherein.

Preferably, described demonstration dot matrix is divided into the last viewing areas of eight row and the following following viewing areas of eight row, delegation on every group of output terminal correspondence in the viewing area and the delegation in the following viewing area.

Preferably, one group of output terminal of first row driving tube drives with first row of upper and lower viewing area and is connected, and another group output terminal drives with second row of upper and lower viewing area and is connected; One group of output terminal of second capable driving tube drives with the third line of upper and lower viewing area and is connected, and another group output terminal drives with the fourth line of upper and lower viewing area and is connected; One group of output terminal of the 3rd capable driving tube drives with the fifth line of upper and lower viewing area and is connected, and another group output terminal drives with the 6th row of upper and lower viewing area and is connected; One group of output terminal of the 4th capable driving tube drives with the 7th row of upper and lower viewing area and is connected, and another group output terminal drives with the 8th row of upper and lower viewing area and is connected.

Preferably, described demonstration dot matrix comprises eight LED dot matrix of 16 * 16 that are cascaded, and described row driver element comprises eight 16 constant-current driven chip, and every constant-current driven chip drives and 16 row of corresponding 16 * 16 LED dot matrix separately.

Preferably, the model of described capable driving tube is 74HC4953.

Preferably, described LED display strip screen also comprises the storer that is connected with the communication of bar screen controller.

The beneficial effects of the utility model are: LED display strip screen of the present utility model makes the integrated circuit structure simpler by the design to the row driver element, and do not influence display effect, this kind circuit structure has to be convenient to keep in repair the characteristics low with cost, is suitable for applying on taxi; In addition, LED display strip screen of the present utility model also comprises the GPRS communication module, and Surveillance center can be with needs content displayed remote download to the bar screen controller.

Description of drawings

Fig. 1 is the electrical block diagram of LED display strip screen of the present utility model.

Embodiment

As shown in Figure 1, LED display strip screen of the present utility model comprises eight LED dot matrix 4 of 16 * 16 that are cascaded, promptly the same delegation of eight 16 * 16 LED dot matrix is electrically connected in turn, form the demonstration dot matrix of 128 row * 16 row, and bar screen controller 1 (can be single-chip microcomputer), this screen controller 1 is by row driver element 2 and each the row control linkage that shows dot matrix, and described screen controller 1 is by row driver element 5 and each the row control linkage that shows dot matrix; This LED display strip screen also comprises the storer that is connected with 1 communication of bar screen controller, the information content that needs demonstration, as weather information, emergency episode information and automotive media information etc., can directly be sent in the bar screen controller 1 by computer, this screen controller 1 is stored in the displaying contents that receives in the storer 3.

Described LED display strip screen also comprises the GPRS communication module 6 that is connected with bar screen controller 1 both-way communication, like this, Surveillance center can be under the effect of the wireless telecommunications of 6 of its GPRS communication module and GPRS communication modules, to need content displayed to be wirelessly transmitted in the bar screen controller 1, bar screen controller 1 shows corresponding content according to default demonstration rule.At this, this GPRS communication module 6 can be connected with bar screen controller 1 both-way communication by the RS232 serial ports.

Row driver element 2 comprises a slice three or eight code translators 21 and four capable driving tubes 22 that model is 74HC4953, the capable driving tube 22 of this model has two control ends and two groups of output terminals, three gating output terminals of bar screen controller 1 are corresponding to be electrically connected with three input ends of three or eight code translators 21, eight output terminals of three or eight code translators 21 and totally eight corresponding one by one electrical connections of control end of four capable driving tubes 22, eight groups of output terminals of four capable driving tubes 22 corresponding with 16 capable electrical connections.In the present embodiment, described demonstration dot matrix is divided into the last viewing areas of eight row and the following following viewing areas of eight row, delegation on every group of output terminal correspondence in the viewing area and the delegation in the following viewing area.Be specifically as follows, driving is connected one group of output terminal of first row driving tube with the 9th row (going in first of following viewing area) with first, and driving is connected another group output terminal with the tenth row (second row of following viewing area) with second; One group of output terminal of second capable driving tube and the 3rd drives with the tenth delegation (the third line of following viewing area) and to be connected, and another group output terminal is connected with the 4th and the 12 capable (fourth line of following viewing area) driving; Driving is connected one group of output terminal of the 3rd capable driving tube with the tenth triplex row (fifth line of following viewing area) with the 5th, and driving is connected another group output terminal with Ariadne (the 6th row of following viewing area) with the 6th; One group of output terminal of the 4th capable driving tube is connected with the tenth five-element (going in the 7th of following viewing area) driving with the 7th, and driving is connected another group output terminal with the 16 row (the 8th row of following viewing area) with the 8th.It is identical that this kind row drives structure is finished the display mode of upper and lower viewing area, can simplify circuit structure like this, and be convenient to maintenance.

Row driver element 5 comprises eight 16 constant-current driven chip 51, and every constant-current driven chip 51 drives and 16 row of corresponding 16 * 16 LED dot matrix separately.

In addition, this LED display strip screen also is included as the power module of power supply such as bar screen controller 1 grade.

Claims

1. a LED display strip screen comprises showing dot matrix and bar screen controller, and described screen controller passes through row driver element and each the row control linkage that shows dot matrix, and passes through row driver element and each the row control linkage that shows dot matrix; It is characterized in that: described capable driver element comprises that inside is the capable driving tube with two control ends and two groups of output terminals of two CMOS pipes, every group of output terminal of each row driving tube at least with show dot matrix in two row drive and be connected; Described LED display strip screen also comprises the GPRS communication module that is connected with bar screen controller both-way communication.

2. LED display strip screen according to claim 1 is characterized in that: described demonstration dot matrix has 16 row, and described capable driver element comprises a slice three or eight code translators and four described capable driving tubes; Three gating output terminals of described screen controller are corresponding to be electrically connected with three input ends of three or eight code translators, eight output terminals of described three or eight code translators and totally eight corresponding one by one electrical connections of control end of four capable driving tubes, the corresponding driving with 16 row that show dot matrix of eight groups of output terminals of four capable driving tubes is connected, every group of output terminal correspondence two row wherein.

3. LED display strip screen according to claim 2 is characterized in that: described demonstration dot matrix is divided into the last viewing areas of eight row and the following following viewing areas of eight row, delegation on every group of output terminal correspondence in the viewing area and the delegation in the following viewing area.

4. LED display strip screen according to claim 3 is characterized in that: one group of output terminal of first row driving tube drives with first row of upper and lower viewing area and is connected, and another group output terminal drives with second row of upper and lower viewing area and is connected; One group of output terminal of second capable driving tube drives with the third line of upper and lower viewing area and is connected, and another group output terminal drives with the fourth line of upper and lower viewing area and is connected; One group of output terminal of the 3rd capable driving tube drives with the fifth line of upper and lower viewing area and is connected, and another group output terminal drives with the 6th row of upper and lower viewing area and is connected; One group of output terminal of the 4th capable driving tube drives with the 7th row of upper and lower viewing area and is connected, and another group output terminal drives with the 8th row of upper and lower viewing area and is connected.

5. according to claim 2,3 or 4 described LED display strip screens, it is characterized in that: described demonstration dot matrix comprises eight LED dot matrix of 16 * 16 that are cascaded, described row driver element comprises eight 16 constant-current driven chip, and every constant-current driven chip drives and 16 row of corresponding 16 * 16 LED dot matrix separately.

6. LED display strip screen according to claim 1 is characterized in that: the model of described capable driving tube is 74HC4953.

7. LED display strip screen according to claim 1 is characterized in that: also comprise the storer that is connected with the communication of bar screen controller.