CN2066820U

CN2066820U - Contactless chinese character automobile safety display device

Info

Publication number: CN2066820U
Application number: CN 89209699
Authority: CN
Inventors: 王东新; 常诚; 关翼飞; 刘尽忱
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-11-10
Filing date: 1989-11-10
Publication date: 1990-12-05

Abstract

The utility model relates to a contactless Chinese character automobile safety display device, which belongs to a safe running auxiliary device for motor vehicles. The contactless Chinese character automobile safety display device is composed of an input circuit, a logic control circuit, a drive circuit and luminescent devices. The key point is that the braking, the left turn, the right turn, the backing control signals, etc., given by an automobile are output to the logic control circuit composed of or gates and NOT gates via the AND gate of the input circuit to generate high-level signals to the triode transistor of the drive circuit for conducting; the high brightness LED which is mutually connected with the triode transistor is lightened, and displays at Chinese characters mode. The contactless Chinese character automobile safety display device has the advantages of no noise, clear display, convenient installation and use, etc.

Description

Contactless Chinese character automobile safety display device

The utility model belongs to the auxiliary device of motor vehicle safe drive.

Automobile when needs turn round or brake temporarily, because follow-up vehicle is observed inadequately the light for vehicle that moves ahead, is easy to cause the generation of rear-end collision in the way of travelling.Not long ago the automotive safety captions telltale of Chu Xianing was placed on the back seat of automobile, showed " maintain safe distance, turn left, turn right, move backward " etc. with hanzi form, and the prompting back vehicle is noted.This telltale is that the employing relay is a mechanical contact, the shortcoming of being brought is to be easy to bad contact, can produce kaka sound in the Presentation Function handoff procedure rings, make the noise that occurs people's worry in the quiet car, its light-emitting diode that is used for the Chinese character demonstration is that diameter is φ 3 in addition, so just cause brightness not enough, daytime weak effect.

The purpose of this utility model provides a kind of noiselessness, and contact is good, the automotive safety peace curtain read out instrument that daytime also can clear display.

The utility model is made of input circuit, logic control circuit, driving circuit and luminescent device, its main points are: control signals such as the brake that automobile provides, left-hand rotation, right-hand rotation, reversing through input circuit with door output send by or the logic control circuit generation high level signal formed of door, not gate to the crystal triode of driving circuit, make its conducting, light with the crystal triode collecting electrode diameter that joins be the high brightness LED of φ 5, show with hanzi form maintain safe distance, turn left, peace samples such as right-hand rotation, reversing, the attention of reminds people.

The utility model makes it not have mechanical contact owing to adopted integrated circuit to realize that the Chinese character of control signal shows, does not produce noise.The high brightness LED that is adopted constitutes various printed words, even also high-visible by day.This device installation, easy to use, intuitive display.

Description of drawings:

Fig. 1 is a block scheme of the present utility model.

Fig. 2 is input circuit of the present utility model, control circuit logical diagram.

Fig. 3 is one of driving circuit of the present utility model, luminescent device elementary diagram.

Fig. 4 is two of driving circuit of the present utility model, a luminescent device elementary diagram.

The utility model adopts automobile storage battery+12 volt power supply, and 12 volts direct supplys connect driving circuit, luminescent device, power supply through conversion get+5 volts be that input circuit, logic control circuit are powered.Logic control circuit is controlled by incoming signal, incoming signal is from the car light of brake, left-hand rotation, right-hand rotation and reversing, when several signals all do not occur, logic control circuit is output as low, the crystal triode BG1-22 of driving circuit does not all work, light-emitting diode SU1-339 does not light, and telltale does not have indication.When brake, stoplight stop lamp is bright, brake signal warp and door Y ₁6 ends output high level, and send or door H ₅Three input ends and or door H ₁An input end, make or the door H ₅Three mouths 3,6,8 and or door H ₁Mouth 8 produce high level output, or door H ₅Given output signal send or door H simultaneously ₄Three input ends, make or the door H ₄Corresponding output end 3,6,8 provide high level output and send or door H ₃Three input ends, cause H ₃Three input ends 3,6,8 produce the high level output signals, the high level signal of its 3 end is added to or door H in addition ₁, make mouth 3 also produce high level signal.12 road given high level output signals are respectively to the crystal triode BG of driving circuit ₁, BG ₇, BG ₁₁, BG ₆, BG ₁₆, BG ₁₂, BG ₁₅, BG ₂₀, BG ₁₃, BG ₂₁, BG ₁₇, BG ₂₂Base stage, make its aerotron conducting, light corresponding light-emitting diode, demonstrate the font of " maintaining safe distance ".With should turning left, turn right and astern signal arrives, can form ← turn left, turn right →, Chinese character such as reversing.

The captions that the light-emitting diode of high brightness is formed are the simplified Hanzi font.Crystal triode BG ₁-BG ₂₂Model be 3DG12B, or the door H _1-5Model be 74LS32, with door Y _1-2Model be 74LS08, the model of not gate F is 74LS04.Each mouth all connects its cooresponding light-emitting diode group through the crystal triode of driving circuit, and light-emitting diode is taked the connection mode of series and parallel.

Claims

1, a kind of contact pointless Chinese character automotive safety telltale, have input circuit, logic control circuit, driving circuit and luminescent device, it is characterized in that control signals such as brake that automobile provides, left-hand rotation, right-hand rotation, reversing through input circuit with door output send by or the logic control circuit generation high level signal formed of door, not gate to the crystal triode of driving circuit, make its conducting, light with the crystal triode collecting electrode diameter that joins be the high brightness LED of Φ 5, show with hanzi form maintain safe distance, turn left, printed words such as right-hand rotation, reversing.