CN2758920Y

CN2758920Y - Swing type LED text display

Info

Publication number: CN2758920Y
Application number: CN 200420114981
Authority: CN
Inventors: 李飞; 马洪洲; 吴春庆; 谭代英
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-29
Filing date: 2004-12-29
Publication date: 2006-02-15
Anticipated expiration: 2014-12-29

Abstract

The utility model relates to a swing type light emitting diode LED display technique, which comprises a swinging needle with a set of light emitting diodes (5), a drive circuit (4), a single chip computer (3), a memory (2) and an interface controller (1). The utility model is also provided with a swing mechanism (6) and an optoelectronic isolator (7). The utility model replaces a motor or a human hand to wave through the interaction of magnetic fields, drives LED light-emitting bodies to generate displacement using the interaction of the magnetic fields, and forms pictures and words using the phenomenon of retentivity of vision. The display device can reduce weight, and the cost is low; simultaneously, the display device can conveniently control the displacement generated by the light-emitting diodes and control the displacement to be fully synchronized with the lighting time of the light-emitting diodes to display clear and stable pictures and words. In addition, the number of the light-emitting diodes is reduced using the phenomenon of retentivity of vision so that the utility model is economic and portable.

Description

A kind of swing light emitting diode picture and eassay display device

Technical field

The utility model relates to a kind of display device, particularly relates to a kind of display device of swing LED.

Background technology

Swing, utilize the persistence of vision phenomenon to show the product there be limited evidence currently of of a plurality of pixels with a small amount of LED.Adopt the LED display technique of fixed pixel in the prior art, be to fix a pixel in each LEDs display image, the LED product of this technology is more, but the LED consumption of this technology is more, at least equal the quantity of pixel, therefore have Heavy Weight, cost height, bulky limitation, make product be difficult to popularize to other applications.

Portable, utilize the persistence of vision phenomenon to show the technology of a plurality of pixels with a small amount of LED, as in " portable light emitting diode picture and eassay display device " utility model of Granted publication on July 7th, 2004, the patent No. 03244851.1.This device utilizes staff to brandish the LED luminophor and produces displacement, utilizes the persistence of vision phenomenon to form the portable display apparatus of image, Heavy Weight, cost height, bulky shortcoming have been overcome to a certain extent, but brandishing the LED luminophor because of this device with staff simultaneously is subjected to displacement, make this device be difficult to break away from brandishing of staff, increase people's burden; The scrambling that staff is brandished shows clear, stable image and is difficult to guarantee, thereby this device usable range is limited to greatly, also is difficult to apply to other field.

Summary of the invention

The purpose of this utility model is to replace motor or staff to brandish by magnetic field interaction, and utilizes the interaction in magnetic field to promote LED luminophor generation displacement, utilizes the persistence of vision phenomenon to form the display device of picture and text.

In order to achieve the above object, the technical scheme that the utility model adopted provides a kind of swing light emitting diode picture and eassay display device, comprises balancing point, driving circuit, single-chip microcomputer, storer, the interface control that has one group of light emitting diode and is provided with tilting mechanism and photoisolator; This tilting mechanism is made up of pendulous device and electromagnet, and photoisolator plays detection effect, and welding links to each other with described single-chip microcomputer in the circuit board; Described pendulous device comprises stator, spring leaf, aluminium flake, magnet, balancing point, and spring leaf is fixing in the circuit board by stator, fixes an aluminium flake in the spring leaf upper end, and aluminium flake is in order to fixed magnet and balancing point, and one group of light emitting diode of weldering is pasted on balancing point top; The position at photoisolator middle part will be complementary with the height on the top of aluminium flake.

But adopt display device weight reduction of the present utility model, reduce cost; It is synchronous fully with the time that LED lights to control simultaneously the displacement that LED takes place, and forms clear, stable picture and text demonstration.In addition, utilize the persistence of vision phenomenon to reduce the quantity of LED, make this device economical and light.

The utility model will be illustrated in conjunction with the accompanying drawings by embodiment.

Description of drawings

Fig. 1 is the functional module general structure synoptic diagram of the utility model embodiment;

Fig. 2 is the structural representation of present embodiment;

Fig. 3 is the side view of Fig. 2.

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, describe specific embodiments of the present utility model in detail.

A kind of swing light emitting diode picture and eassay display device, comprise the balancing point, driving circuit 4, single-chip microcomputer 3, storer 2, the interface control 1 that have one group of light emitting diode 5, be provided with tilting mechanism 6 and photoisolator 7 in the lower end of balancing point, this tilting mechanism 6 is made up of pendulous device 8 and electromagnet 9.This pendulous device comprises stator 81, spring leaf 82, aluminium flake 83, magnet 84, balancing point 85, spring leaf 82 is fixed on the wiring board 10 by stator 81, fix an aluminium flake 83 in spring leaf 82 upper ends, this aluminium flake is in order to fixed magnet 84 and balancing point 85, and one group of light emitting diode 5 of weldering is pasted on balancing point top; The distance at the middle part of the top of described aluminium flake 83 and photoisolator 7 is 1.5 centimetres.

Swing light emitting diode picture and eassay display device in the practicality comprises that 8 LED5 subsides of lining up vertical setting of types are welded in balancing point top, and links to each other with driving circuit 4 that driving circuit 4 is by single-chip microcomputer 3 controls.External power supply divides two-way to insert this device, and one the road in the circuit of electromagnet 9, and another road powers to each several part by voltage stabilizer.After circuit is connected,, after amplifying, single-chip microcomputer 3 is input in electromagnet 9 built-up circuits by comparison frequency 11---25HZ of single-chip microcomputer 3 outputs, form electromagnet, convert electricity to magnetic; When being fixed in magnet 84 on the aluminium flake 83 and interacting, magnet 84 promotes the aluminium flakes swing, swings together thereby drive the balancing point that is fixed on the aluminium flake.When balancing point is swung, the middle part that reaches photoisolator 7 can be bent in top apart from the aluminium flake 83 at 1.5 centimetres at photoisolator middle part, when balancing point is swung, drive the vibration back and forth in photoisolator 9 of the curved aluminium flake that stretches out, the curved aluminium flake that stretches out vibrates back and forth that to swing back and forth with balancing point be consistent, make photoisolator 7 detect the hunting frequency of balancing point, amplitude, will be by the detected balancing point hunting frequency of photoisolator, amplitude is input in the single-chip microcomputer 3 carries out frequency ratio, as consistent with comparison frequency, then send instruction to driving circuit 4, to show correct picture and text by single-chip microcomputer 3.Storing in the storer 2 needs content displayed, can carry out interface control to the content in the storer 2 by the interface control button.

Claims

1, a kind of swing light emitting diode picture and eassay display device, comprise the balancing point, driving circuit (4), single-chip microcomputer (3), storer (2), the interface control (1) that have one group of light emitting diode (5), it is characterized in that the balancing point lower end is connected with tilting mechanism (6), and be provided with the photoisolator (7) that links to each other with single-chip microcomputer (3);

2, swing light emitting diode picture and eassay display device according to claim 1 is characterized in that tilting mechanism (6) is made up of pendulous device (8) and electromagnet (9);

3, swing light emitting diode picture and eassay display device according to claim 2, it is characterized in that pendulous device (8) comprises stator (81), spring leaf (82), aluminium flake (83), magnet (84), balancing point (85), spring leaf (82) is fixed on the wiring board (10) by stator (81), fix an aluminium flake (83) in spring leaf (82) upper end, aluminium flake (83) is in order to fixed magnet (84) and balancing point (85), and weldering one group of light emitting diode (5) is pasted on balancing point top;

4,, it is characterized in that the position at photoisolator (7) middle part will be complementary with the height on the top of aluminium flake (83) according to claim 3 or 4 described swing light emitting diode picture and eassay display devices.