CN2191794Y

CN2191794Y - Electronic flash device for motor-driven vehicle

Info

Publication number: CN2191794Y
Application number: CN 94202402
Authority: CN
Inventors: 程云海
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-24
Filing date: 1994-01-24
Publication date: 1995-03-15
Anticipated expiration: 2004-01-24

Abstract

The utility model belongs to devices of vehicle signals, particularly relates to an electronic flash device for motor-driven vehicles, which is used for designating changes of traveling direction or sending out dangerous flashing light alarm signal when vehicles runs. The utility model uses an RC time constant circuit, a relay for controlling the output of a crystal triode collector and a power supply for an on-off signal light. The overall structure has the advantages of simple and practical circuit and high operational reliability. The number value of the elements is slightly justified, so the utility model can be respectively suitable for signal circuit with a power supply voltage of 12V or 24V.

Description

Electronic flash device for motor-driven vehicle

The utility model belongs to the signals of vehicles device, is specifically related to a kind ofly be used to indicate that travel direction changes or the motor vehicle electronic Der Blink und Abblendschalter of the warning signal that flashes during driving.

The ubiquitous problem of general-duty electronic flasher is now, and element is many, the circuit complexity, and functional reliability is poor, and service life is short.Chinese patent GG87206726 patent disclosure a kind of " electronic flasher relay circuit ", adopt the emitter load circuit, base signal is directly taken from the electric capacity current potential, its functional reliability and service life are still undesirable.

It is simple that the purpose of this utility model provides a kind of line construction, functional reliability height, long service life, and the wide motor vehicle electronic Der Blink und Abblendschalter of Applicable scope.

The utility model adopts following technical scheme.

The utility model includes crystal triode BG, capacitor C, resistance R, relay J.R1C constitutes charging and discharging circuit, discharges and recharges time constant and is determined by the numerical value adjustment of the variable resistance W of R1C and access base loop.The base stage of crystal triode BG is held the terminal potential of C by resistance R 1 power taking, and decision crystal triode transistor (conducting or by).The load of the collecting electrode of the BG of crystal triode is the line bag of relay J, the electric power loop of relay contact J make-and-break signal bulb, the value of resistance R 1 is that the value of 3K, R2 is 390 Ω (when power line voltage is 12 volts), perhaps the value of resistance R 1 is 890 Ω, and the value of R2 is zero (when power line voltage is 24 volts).Crystal triode adopts positive-negative-positive A7333 model, and all components and parts are packaged in the insulation shell of band plug.

The utility model circuit reduction, the functional reliability height, it is on probation to get on the bus, continuous working 8 hours, up to ten thousand times of stroboscopic, temperature rise no change.Has good practical values.

Below in conjunction with accompanying drawing an embodiment of the present utility model is described.

Accompanying drawing 1 is motor vehicle electronic flasher circuit figure;

Accompanying drawing 2 is a motor vehicle electronic Der Blink und Abblendschalter outside drawing.

Among the figure, R1C and W constitute RC and charge and discharge circuit, and the variation of C point terminal potential is by the base stage of R1 control crystal triode BG, and then the control crystal triode transistor, the electric power loop gap flash of light of relay contact control bulb.The power line voltage of this enforcement figure is 12 volts, and wherein the resistance of R1 is 3K, and the resistance of R2 is zero, and crystal triode is a positive-negative-positive A733 model.

Claims

1, a kind of motor vehicle electronic Der Blink und Abblendschalter, include crystal triode BG, capacitor C, resistance R 1, relay J, feature of the present utility model is, R1C constitutes charging and discharging circuit, the base stage of crystal triode BG is held the terminal potential of C by resistance R 1 power taking, the collector series relay J of crystal triode BG does load, relay contact J make-and-break signal bulb power loop, variable resistance W inserts base loop, the value of resistance R 1 is 3K or 890 Ω, the value of resistance R 2 is 390 Ω or zero, and all components and parts are packaged in the insulation shell of band plug.

2, motor vehicle electronic Der Blink und Abblendschalter as claimed in claim 1 is characterized in that crystal triode BG adopts positive-negative-positive A733 model.

3, motor vehicle electronic Der Blink und Abblendschalter as claimed in claim 1 is characterized in that when power line voltage is 12 volts the resistance of R1 is 3K, and the resistance of R2 is 390 Ω.

4, motor vehicle electronic Der Blink und Abblendschalter as claimed in claim 1 is characterized in that when power line voltage is 24 volts the resistance of R1 is 890 Ω, and the resistance of R2 is zero.