Automobile foot illuminating lamp delay controller
Technical field
The utility model relates to automobile floor light technical field, is specifically related to a kind of automobile foot illuminating lamp delay controller.
Background technology
Along with industrial expansion and human living standard's raising, automobile also more and more spreads in people's the life.Common automobile inner top can be equipped with illuminating lamp, be used for throwing light in the whole compartment, and the bottom generally all is not equipped with illuminating lamp in the automobile, if in the compartment, fall down thing evening, is difficult to search out fast through the overhead illumination lamp.The more important thing is: the operator seat of the operator's compartment of automobile has a plurality of control setups all to be installed on lower position, does not cause using mistake if see these control setups, may make troubles, even threaten safety.Some automobile is equipped with the foot illuminating lamp, just can operate on it but these illuminating lamps generally need pass through opening and closing, and operation is inconvenience extremely, and sometimes possibly forget and close and cause waste of electric energy.
The utility model content
To the deficiency of prior art, the purpose of the utility model aims to provide a kind of automobile foot illuminating lamp delay controller, makes SELF CL after foot illuminating lamp time-delay a period of time through once triggering, simple to operate, energy savings.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
Automobile foot illuminating lamp delay controller; Comprise foot illuminating lamp and the direct supply that electrically connects with said foot illuminating lamp; Also comprise delay control circuit that is arranged between said foot illuminating lamp and the direct supply and the signal switch that electrically connects with said delay control circuit, said signal switch is installed on the car door of automobile cab side.
As improvement, also comprise the fuse that is arranged between delay control circuit and the direct supply.
Preferably; Said delay control circuit comprises chip U1, chip U2, resistance R 1, resistance R 2, aerotron Q1; The input end of said chip U2 and direct supply electrically connect; First pin of said chip U1 links to each other with the mouth of chip U2, and the 7th pin of chip U1 links to each other through the mouth of resistance R 1 with chip U2, and the 7th pin of chip U1 links to each other with signal switch; The 6th pin of chip U1 is connected to the base stage of aerotron Q1 through resistance R 2, and the collecting electrode of said aerotron Q1 links to each other with the foot illuminating lamp.
Preferably, it is characterized in that said chip U1 is delay chip Bdt078-103, said chip U2 is three terminal integrated voltage stabilizer 78L05.
The automobile foot illuminating lamp delay controller that the utility model is set forth; Compared with prior art; Its beneficial effect is: a delay control circuit is installed between power supply and foot illuminating lamp; Adorn a signal switch on the car door of operator's compartment side, through signal switch delay control circuit is produced energizing signal delay control circuit control foot illumination lamp ignition is extinguished after a period of time automatically, convenient, simple to operate, the energy savings of apolegamy is installed.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model automobile foot illuminating lamp delay controller;
Accompanying drawing 2 is the schematic circuit diagram of the utility model delay control circuit.
The specific embodiment
Below, in conjunction with the accompanying drawing and the specific embodiment, the automobile foot illuminating lamp delay controller of the utility model done further describing, so that clearerly understand the utility model technological thought required for protection.
Like Fig. 1, shown in 2, automobile foot illuminating lamp delay controller comprises delay control circuit 1, direct supply interface 2, grounding jumper interface 3, signal switch interface 4, foot illuminating lamp interface 5, foot illuminating lamp interface 6, fuse 7.Delay control circuit 1 electrically connects respectively with direct supply interface 2, grounding jumper interface 3, signal switch interface 4, foot illuminating lamp interface 5, foot illuminating lamp interface 6; Fuse 7 is arranged between delay control circuit 1 and the direct supply interface 2, and the maximum current that fuse 7 can pass through is 0.5A.Direct supply interface 2 is connected to direct supply; The grounding jumper interface is connected on the ground wire; The signal switch interface links to each other with signal switch; Signal switch is installed on the car door of automobile cab side, and signal switch just produces an energizing signal when opening this car door, and foot illuminating lamp interface 5, foot illuminating lamp interface 6 link to each other respectively at a foot illuminating lamp.
Delay control circuit 1 comprises diode D1, chip U1, chip U2, resistance R 1, resistance R 2, aerotron Q1; The input end of chip U2 electrically connects through diode D1 and direct supply; First pin of chip U1 links to each other with the mouth of chip U2; The 7th pin of chip U1 links to each other through the mouth of resistance R 1 with chip U2; The 7th pin of chip U1 links to each other with signal switch, and the 6th pin of chip U1 is connected to the base stage of aerotron Q1 through resistance R 2, and the collecting electrode of said aerotron Q1 links to each other with the foot illuminating lamp; For making voltage transmission more accurate, between mouth that is connected to filter capacitor C2, chip U2 between the input end of chip U2 and the negative pole and negative pole, be connected to filter capacitor C1.Be connected with capacitor C 3 between the mouth of chip U2 and the ground terminal.In the utility model, the foot illuminating lamp that is adopted is two, and the one of which end all links to each other with direct supply, and the other end all is connected to the collecting electrode of aerotron Q1.The negative pole that the utility model is mentioned has ground connection.
As preferred version, chip U1 adopts delay chip Bdt078-103; Chip U2 is three terminal integrated voltage stabilizer 78L05, and it can be stablized output+5V voltage and supply chip U1 to use.
Principle of work: the function of chip Bdt078-103 at first need be described, chip Bdt078-10 powers on and does not work, and only obtaining an energizing signal could work a period of time, and time is up quits work automatically, triggers and could work up to next time.So in the utility model; First pin of chip Bdt078-10 power on always (from chip U2+5V voltage), but chip U1 does not work, when the signal switch that is connected in signal switch interface 4 produces an energizing signal to the 7th pin of chip Bdt078-10; Chip Bdt078-10 starts working; The mouth of chip U1 is that the 6th pin of chip Bdt078-10 is exported a voltage, aerotron Q1 conducting, and the two ends of foot illuminating lamp produce loss in voltage and are lighted.The length of chip Bdt078-10 work-hours changes through the size of regulating resistance R 1, and time is up will quit work until the arrival of next energizing signal automatically.
For a person skilled in the art,, make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of the utility model claim all according to the technical scheme and the design of above description.