CN2550212Y - Light state display - Google Patents
Light state display Download PDFInfo
- Publication number
- CN2550212Y CN2550212Y CN 02235741 CN02235741U CN2550212Y CN 2550212 Y CN2550212 Y CN 2550212Y CN 02235741 CN02235741 CN 02235741 CN 02235741 U CN02235741 U CN 02235741U CN 2550212 Y CN2550212 Y CN 2550212Y
- Authority
- CN
- China
- Prior art keywords
- thyristor
- triode
- resistance
- negative
- lamp bulb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a car lamp status indicator, comprising a current limiting resistance R1 connected between the anode and the trigger pole of a unidirectional thyristor SCR, an input 1 connected with the anode and an output 2 connected with the cathode of the resistance R1. One end of the lamp bulb filament L is connected with the output 2 of the thyristor cathode while the other end is connected with the negative of the power supply. The base of a triode T is connected with the thyristor cathode via an input resistance R2; an emitter of the triode T is connected with the input 1 while the collector of the triode is connected with one end of a varistor R3. The other end of the varistor is connected with the positive of an LED D whose negative is connected with the negative of an automobile battery. The utility model is characterized in that the lamp bulb filament is taken as a conducting path of the thyristor and can be connected in series into the existing car lamp circuit at OFF. The input 1 is connected with the power positive and the output 2 is connected with one end of the lamp bulb; the other end of the lamp bulb is connected with the power supply negative. The PNP triode T is designed as a switch circuit; the control current of the base is supplied from the cathode of the thyristor. After powering ON, the conduction is triggered by the thyristor via the resistance R1 and the lamp bulb is lit; when the base of the PNP triode collects the current signal, the triode is ON and the LED is lit. If the filament is broken, the small current of the base of the PNP triode is not able to sustain the ON status of the thyristor and then the thyristor is automatically OFF. The triode is OFF as no current signal through the base; therefore, the LED is OFF. The utility model has an advantage of improving safety on automobiles by real-time monitoring on the lighting system and the lamp bulb.
Description
Technical field:
The utility model relates to a kind of car direct current road current sensing means.
Technical background:
Automobile lamp filament blow or car light fault, chaufeur generally are difficult for finding, produce accident potential in the driving, and traffic accident takes place easily.
Summary of the invention:
Goal of the invention of the present utility model is to disclose the car light status displays that a kind of vehicle driver of making in time understands the automobile lamp running condition, improves the safety of vehicle.
The realization the technical solution of the utility model is as follows: current-limiting resistance R1 is connected between unidirectional thyristor SCR anode and the trigger electrode, and anode connects input terminal 1, and negative electrode connects lead-out terminal 2.Positive-negative-positive aerotron T, light-emitting diode D, variable resistance R3 and input resistance R2 form jointly and show current signal collection and display circuit.The base stage of aerotron T is received unidirectional thyristor SCR negative electrode by input resistance R2, aerotron T emitter is connected on input terminal 1, collecting electrode connects variable resistance R3 one end, variable resistance R3 other end sending and receiving optical diode D positive pole, and light-emitting diode D negative pole is connected with the negative pole of automobile storage battery.Light bulb filament L one termination unidirectional thyristor SCR negative electrode connects lead-out terminal 2, other end power connection negative pole.
Principle of the present utility model is: utilize the lamp light bulb filament as unidirectional thyristor conducting loop.Disconnect former car light circuit, the utility model is sealed in former car light circuit.Input terminal 1 connects positive supply, and lead-out terminal 2 connects bulb, and the bulb other end is connected on the power cathode.Positive-negative-positive aerotron T is designed to switch circuit, and the base stage control current is provided by the thyristor negative electrode.Energized, unidirectional thyristor is by current-limiting resistance R1 triggering and conducting, and bulb is bright, and the positive-negative-positive transistor base collects current signal, the aerotron conducting, light-emitting diode is bright.If filament is disconnected, positive-negative-positive transistor base electric current is very little, can not keep the unidirectional thyristor conducting state, and unidirectional thyristor automatically shuts down, the transistor base no signal current, and aerotron opens circuit, and light-emitting diode does not work.
The utility model passes through monitoring automobile lighting system and bulb quality in real time, and gives chaufeur by luminous display reminding, the safety performance of raising automobile.
Description of drawings:
Fig. 1 is the utility model electrical schematic diagram;
Among the figure: R1---current-limiting resistance; R2---input resistance; R3---power transformation resistance; SCR---unidirectional thyristor; T---aerotron; D---light-emitting diode; L---light bulb filament; 1---input terminal; 2---lead-out terminal.
Fig. 2 is physical cabling figure of the present utility model
The specific embodiment:
Current-limiting resistance R1 is connected between unidirectional thyristor SCR anode and the trigger electrode, and anode connects input terminal 1, and negative electrode connects lead-out terminal 2.Positive-negative-positive aerotron T, light-emitting diode D, variable resistance R3 and input resistance R2 form jointly and show current signal collection and display circuit.The base stage of aerotron T is received unidirectional thyristor SCR negative electrode by input resistance R2, aerotron T emitter is connected on input terminal, collecting electrode connects variable resistance R3 one end, variable resistance R3 other end sending and receiving optical diode D positive pole, and light-emitting diode D negative pole is connected with the negative pole of automobile storage battery.Light bulb filament L one termination unidirectional thyristor SCR negative electrode connects lead-out terminal 2, other end power connection negative pole.
When physical cabling, disconnect former car light circuit, the utility model is sealed in former car light circuit.Input terminal 1 connects positive supply, and lead-out terminal 2 connects the car light bulb.
Claims (1)
- A kind of car light status displays, it is characterized in that: current-limiting resistance R1 is connected between unidirectional thyristor SCR anode and the trigger electrode, anode connects input terminal 1, negative electrode connects lead-out terminal 2, light bulb filament L one termination unidirectional thyristor SCR negative electrode connects lead-out terminal 2, other end power connection negative pole, the base stage of aerotron T is received unidirectional thyristor SCR negative electrode by input resistance R2, aerotron T emitter is connected on the input terminal 1, collecting electrode connects variable resistance R3 one end, variable resistance R3 other end sending and receiving optical diode D positive pole, light-emitting diode D negative pole is connected with the negative pole of automobile storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235741 CN2550212Y (en) | 2002-05-27 | 2002-05-27 | Light state display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235741 CN2550212Y (en) | 2002-05-27 | 2002-05-27 | Light state display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2550212Y true CN2550212Y (en) | 2003-05-14 |
Family
ID=33710193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235741 Expired - Fee Related CN2550212Y (en) | 2002-05-27 | 2002-05-27 | Light state display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2550212Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332473A (en) * | 2011-09-20 | 2012-01-25 | 彭艳兵 | Low-voltage drop active diode |
| CN102625550A (en) * | 2012-03-14 | 2012-08-01 | 江苏联星光电有限公司 | Fault-tolerant type high-power LED (Light Emitting Diode) lamp |
-
2002
- 2002-05-27 CN CN 02235741 patent/CN2550212Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332473A (en) * | 2011-09-20 | 2012-01-25 | 彭艳兵 | Low-voltage drop active diode |
| CN102625550A (en) * | 2012-03-14 | 2012-08-01 | 江苏联星光电有限公司 | Fault-tolerant type high-power LED (Light Emitting Diode) lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |