JPH01132442U - - Google Patents
Info
- Publication number
- JPH01132442U JPH01132442U JP2961488U JP2961488U JPH01132442U JP H01132442 U JPH01132442 U JP H01132442U JP 2961488 U JP2961488 U JP 2961488U JP 2961488 U JP2961488 U JP 2961488U JP H01132442 U JPH01132442 U JP H01132442U
- Authority
- JP
- Japan
- Prior art keywords
- switching transistor
- circuit
- output
- input terminal
- vehicle lamp
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の車両用ランプ点滅装置の一実
施例を示す電気回路図、第２図は上記一実施例の
起動回路の別の実施例の電気回路図、第３図は本
考案の他の実施例の電気回路図、第４図は従来の
トランジスタ式フラツシヤの電気回路図である。
１２……操作スイツチ、１３……ターンシグナ
ルスイツチ、１４……ハザードスイツチ、１５…
…車両用ランプ回路、２０……駆動回路、３０…
…発振回路、４０……ランプ断線検出回路、５０
……起動回路、２２……トランジスタ、（スイツ
チングトランジスタ）、３２……コンデンサ、３
４，３５，４２，４３，４４，４５……分圧抵抗
、３１，４１……オペアンプ。
FIG. 1 is an electric circuit diagram showing one embodiment of the vehicle lamp flashing device of the present invention, FIG. 2 is an electric circuit diagram of another embodiment of the starting circuit of the above-mentioned embodiment, and FIG. FIG. 4 is an electrical circuit diagram of a conventional transistor type flasher. 12...Operation switch, 13...Turn signal switch, 14...Hazard switch, 15...
...Vehicle lamp circuit, 20...Drive circuit, 30...
...Oscillation circuit, 40...Lamp burnout detection circuit, 50
...Start-up circuit, 22...Transistor, (switching transistor), 32...Capacitor, 3
4, 35, 42, 43, 44, 45... voltage dividing resistor, 31, 41... operational amplifier.
Claims (1)
のランプを備えた車両用ランプ回路と、前記操作
スイツチと前記電源との間に介装したスイツチン
グトランジスタを有する駆動回路と、該駆動回路
に接続し前記スイツチングトランジスタの出力状
態の変動に応じて信号を出力するランプ断線検出
回路と、該ランプ断線検出回路に接続すると共に
前記駆動回路に接続し該ランプ断線検出回路の出
力に応じて出力バルス信号の周波数を変化させる
発振回路とを備え、該発振回路の出力バルス信号
により前記スイツチングトランジスタを駆動し、
前記操作スイツチ閉成時に前記車両用ランプ回路
と前記電源間を断続することを特徴とする車両用
ランプ点滅装置。 (2) 前記発振回路が、前記電源に接続したコン
デンサと、該コンデンサの前記電源側に一方の入
力端子を接続し、他方の入力端子を前記電源に分
圧抵抗を介して接続すると共に、出力端子を前記
二つの入力端子に夫々帰還抵抗を介して接続した
オペアンプとを備え、該オペアンプの出力端子を
前記駆動回路に接続した請求項１記載の車両用ラ
ンプ点滅装置。 (3) 前記ランプ断線検出回路が、一方の入力端
子を前記電源に分圧抵抗を介して接続し、前記ス
イツチングトランジスタの前記操作スイツチ側に
一端を接続すると共に他端を接地した二つの直列
分圧抵抗の両者間の接続点に他方の入力端子を接
続すると共に、前記オペアンプの前記他方の入力
端子に出力端子を接続した第２のオペアンプを備
え、前記スイツチングトランジスタに隣接する分
圧抵抗と前記スイツチングトランジスタとの接続
点を前記操作スイツチに接続した請求項２記載の
車両用ランプ点滅装置。[Claims for Utility Model Registration] (1) A vehicle lamp circuit comprising a plurality of lamps connected to a power source via an operating switch, and a switching transistor interposed between the operating switch and the power source. a drive circuit, a lamp breakage detection circuit connected to the drive circuit and outputting a signal in response to a change in the output state of the switching transistor; a lamp breakage detection circuit connected to the lamp breakage detection circuit and the drive circuit; an oscillation circuit that changes the frequency of the output pulse signal according to the output of the detection circuit, and drives the switching transistor with the output pulse signal of the oscillation circuit;
A vehicle lamp flashing device characterized in that when the operation switch is closed, the vehicle lamp circuit and the power source are connected intermittently. (2) The oscillation circuit has a capacitor connected to the power supply, one input terminal is connected to the power supply side of the capacitor, the other input terminal is connected to the power supply via a voltage dividing resistor, and the output 2. The vehicle lamp flashing device according to claim 1, further comprising an operational amplifier whose terminals are connected to said two input terminals via feedback resistors, respectively, and an output terminal of said operational amplifier is connected to said drive circuit. (3) The lamp breakage detection circuit has two series circuits, one input terminal of which is connected to the power supply via a voltage dividing resistor, one end of which is connected to the operating switch side of the switching transistor, and the other end of which is grounded. a second operational amplifier having the other input terminal connected to a connection point between both of the voltage dividing resistors, and an output terminal connected to the other input terminal of the operational amplifier, the voltage dividing resistor adjacent to the switching transistor; 3. The vehicle lamp flashing device according to claim 2, wherein a connection point between the switching transistor and the switching transistor is connected to the operating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2961488U JPH01132442U (en) | 1988-03-04 | 1988-03-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2961488U JPH01132442U (en) | 1988-03-04 | 1988-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132442U true JPH01132442U (en) | 1989-09-08 |
Family
ID=31253980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2961488U Pending JPH01132442U (en) | 1988-03-04 | 1988-03-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132442U (en) |
-
1988
- 1988-03-04 JP JP2961488U patent/JPH01132442U/ja active Pending
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