Front combination lamp circuit with constant current effect

Abstract

The utility model relates to the technical field of automobiles, in particular to a front combination lamp circuit with a constant current effect. Comprising a PCB, a relay module, a day and night lamp module, a steering lamp module and a lamp bead module, the relay module, the day and night lamp module, the steering lamp module and the lamp bead module are arranged on the PCB, and the day and night lamp module, the steering lamp module and the lamp bead module are connected with the relay module. The constant current effect is improved, and the problem that the brightness of the lamp is not uniform easily when the voltage of the vehicle is unstable is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a front combination lamp circuit with a constant current effect. Background Art

[0002] At present, automobiles are widely used in the world, and the quality of products must be guaranteed. Cars are equipped with daytime position turn signals, which can be turned on when the car needs to turn or change lanes. This allows the driver behind to make an earlier judgment and mental preparation to avoid unnecessary accidents. At the same time, the daytime position lights can also allow other drivers to see the width and position of the vehicle more clearly.

[0003] However, the circuit cross-current effect of the existing daytime position turn signal lamp is not good, and when the vehicle voltage is unstable, it is easy to cause uneven brightness of the lamp. Utility Model Content

[0004] The utility model aims to provide a front combination lamp circuit with a constant current effect, which solves the problem that the existing circuit cross-current effect of the daytime position turn signal lamp is poor and the brightness of the lamp is uneven when the vehicle voltage is unstable.

[0005] To achieve the above-mentioned purpose, the utility model adopts a front combination lamp circuit with a constant current effect, comprising a PCB board, a relay module, a day and night lamp module, a turn signal lamp module and a lamp bead module, wherein the relay module, the day and night lamp module, the turn signal lamp module and the lamp bead module are arranged on the PCB board, and the day and night lamp module, the turn signal lamp module and the lamp bead module are respectively connected to the relay module;

[0006] The day and night light module includes a diode D1, a diode D2, a diode D3, a diode D4, a voltage-stabilizing diode TVS1, a resistor R1, a resistor R2, a resistor R7, a resistor R8, a resistor R9, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R21, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C9, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a transistor Q5, a transistor Q6, a transistor Q7 and a transistor Q9. The diode D1 is connected to the relay module and the resistor R2 respectively, the diode D2 is connected to the diode D1 and the diode D3 respectively, and the voltage-stabilizing diode TVS1, the resistor R7, the capacitor C1, the capacitor C2 and the resistor R1 are connected to the diode D2 respectively. The transistor Q1 is respectively connected to the resistor R1, the transistor Q6, the transistor Q2 and the resistor R13, the resistor R11 is respectively connected to the transistor Q6, the capacitor C5, the resistor R13, the resistor R14 and the resistor R15, the transistor Q5 is respectively connected to the transistor Q2 and the transistor Q3, the resistor R16 is respectively connected to the transistor Q5, the resistor R17, the resistor R18 and the resistor R19, the transistor Q4 is respectively connected to the transistor Q3, the resistor R19, the resistor R12, the resistor R2, the transistor Q7 and the transistor Q9, the capacitor C6 is connected to the resistor R12, the resistor R9 is respectively connected to the transistor Q9, the resistor R21, the capacitor C3, the capacitor C4, the capacitor C9 and the resistor R8, and the diode D4 is connected to the resistor R8.

[0007] The turn signal module includes a voltage-stabilizing diode TVS2, a diode D6, a resistor R29, a capacitor C7, a capacitor C8, a resistor R40, a resistor R28, a transistor Q15, a transistor Q10, a transistor Q11, a transistor Q12, a transistor Q13, a transistor Q14, a resistor R27, a resistor R26, a resistor R25, a resistor R24, a resistor R35, a resistor R36, a resistor R37, a resistor R38 and a resistor R39. The voltage-stabilizing diode TVS2 is connected to the relay module, and the diode D6 is respectively connected to the voltage-stabilizing diode TVS2, the resistor R29, the capacitor C7, the capacitor C8 and the resistor R40. The resistor R 40 is connected to the transistor Q15, the transistor Q15 is respectively connected to the resistor R40, the resistor R35, the transistor Q10, the transistor Q11, the transistor Q12, the transistor Q13 and the transistor Q14, the resistor R28 and the resistor R35 are respectively connected to the transistor Q10, the resistor R27 and the resistor R36 are respectively connected to the transistor Q11, the resistor R26 and the resistor R37 are respectively connected to the transistor Q12, the resistor R25 and the resistor R38 are respectively connected to the transistor Q13, and the resistor R24 ​​and the resistor R39 are respectively connected to the transistor Q14.

[0008] Among them, the lamp bead module includes lamp bead LED1, lamp bead LED2, lamp bead LED3, lamp bead LED4, lamp bead LED5, lamp bead LED6, lamp bead LED7, lamp bead LED8, resistor R3, resistor R4, resistor R5 and resistor R6. The lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are respectively connected to the relay module, the lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are connected in parallel, the lamp bead LED5, the lamp bead LED6, the lamp bead LED7 and the lamp bead LED8 are connected in parallel, the lamp bead LED1, the lamp bead LED5 and the resistor R3 are connected in series, the lamp bead LED2, the lamp bead LED6 and the resistor R4 are connected in series, the lamp bead LED3, the lamp bead LED7 and the resistor R5 are connected in series, and the lamp bead LED4, the lamp bead LED8 and the resistor R6 are connected in series.

[0009] Among them, the lamp bead module also includes lamp bead LED9, lamp bead LED10, lamp bead LED11, lamp bead LED12, resistor R22 and resistor R23. The lamp bead LED9 and the lamp bead LED10 are respectively connected to the relay module, the lamp bead LED9 and the lamp bead LED10 are connected in parallel, the lamp bead LED9, the lamp bead LED11 and the resistor R22 are connected in series, and the lamp bead LED10, the lamp bead LED12 and the resistor R23 are connected in series.

[0010] The relay module is a repeater J1, and the repeater J1 is respectively connected to the daytime and nighttime light module, the turn signal module and the lamp bead module.

[0011] The utility model discloses a front combination lamp circuit with constant current effect. By using the triode constant current, the current of the lamp bead can be set so that the brightness of the turn signal lamp in the daytime position will not change, thereby improving the constant current effect and avoiding the problem of uneven brightness of the lamp caused by unstable vehicle voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a circuit principle diagram of the day and night light module of the utility model.

[0014] Figure 2 It is a circuit principle diagram of the turn signal lamp module of the utility model.

[0015] Figure 3 It is a circuit schematic diagram of the lamp bead module of the utility model.

[0016] Figure 4 It is a circuit principle diagram of the relay module of the utility model. DETAILED DESCRIPTION

[0017] See also Figure 1 to Figure 4 ,in Figure 1 This is the circuit schematic of the day and night light module. Figure 2 This is the circuit schematic of the turn signal module. Figure 3 This is the circuit schematic diagram of the lamp bead module. Figure 4 This is the circuit schematic diagram of the relay module.

[0018] The utility model provides a front combination lamp circuit with a constant current effect, comprising a PCB board, a relay module, a day and night lamp module, a turn signal lamp module and a lamp bead module, wherein the relay module, the day and night lamp module, the turn signal lamp module and the lamp bead module are arranged on the PCB board, and the day and night lamp module, the turn signal lamp module and the lamp bead module are respectively connected to the relay module;

[0019] The day and night light module includes a diode D1, a diode D2, a diode D3, a diode D4, a voltage-stabilizing diode TVS1, a resistor R1, a resistor R2, a resistor R7, a resistor R8, a resistor R9, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R21, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C9, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a transistor Q5, a transistor Q6, a transistor Q7 and a transistor Q9. The diode D1 is connected to the relay module and the resistor R2 respectively, the diode D2 is connected to the diode D1 and the diode D3 respectively, and the voltage-stabilizing diode TVS1, the resistor R7, the capacitor C1, the capacitor C2 and the resistor R1 are connected to the diode D2 respectively. The transistor Q1 is respectively connected to the resistor R1, the transistor Q6, the transistor Q2 and the resistor R13, the resistor R11 is respectively connected to the transistor Q6, the capacitor C5, the resistor R13, the resistor R14 and the resistor R15, the transistor Q5 is respectively connected to the transistor Q2 and the transistor Q3, the resistor R16 is respectively connected to the transistor Q5, the resistor R17, the resistor R18 and the resistor R19, the transistor Q4 is respectively connected to the transistor Q3, the resistor R19, the resistor R12, the resistor R2, the transistor Q7 and the transistor Q9, the capacitor C6 is connected to the resistor R12, the resistor R9 is respectively connected to the transistor Q9, the resistor R21, the capacitor C3, the capacitor C4, the capacitor C9 and the resistor R8, and the diode D4 is connected to the resistor R8.

[0020] Further, the turn signal module includes a voltage stabilizing diode TVS2, a diode D6, a resistor R29, a capacitor C7, a capacitor C8, a resistor R40, a resistor R28, a transistor Q15, a transistor Q10, a transistor Q11, a transistor Q12, a transistor Q13, a transistor Q14, a resistor R27, a resistor R26, a resistor R25, a resistor R24, a resistor R35, a resistor R36, a resistor R37, a resistor R38 and a resistor R39, the voltage stabilizing diode TVS2 is connected to the relay module, the diode D6 is respectively connected to the voltage stabilizing diode TVS2, the resistor R29, the capacitor C7, the capacitor C8 and the resistor R40, the resistor R40 is connected to the transistor Q15, and the transistor Q15 is respectively connected to the resistor R40, the resistor R35, the transistor Q10, the transistor Q11, the transistor Q12, the transistor Q13 and the transistor Q14, the resistor R28 and the resistor R35 are respectively connected to the transistor Q10, the resistor R27 and the resistor R36 are respectively connected to the transistor Q11, the resistor R26 and the resistor R37 are respectively connected to the transistor Q12, the resistor R25 and the resistor R38 are respectively connected to the transistor Q13, and the resistor R24 ​​and the resistor R39 are respectively connected to the transistor Q14.

[0021] Further, the lamp bead module includes lamp bead LED1, lamp bead LED2, lamp bead LED3, lamp bead LED4, lamp bead LED5, lamp bead LED6, lamp bead LED7, lamp bead LED8, resistor R3, resistor R4, resistor R5 and resistor R6. The lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are respectively connected to the relay module. The lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are connected in parallel. The lamp bead LED5, the lamp bead LED6, the lamp bead LED7 and the lamp bead LED8 are connected in parallel. The lamp bead LED1, the lamp bead LED5 and the resistor R3 are connected in series. The lamp bead LED2, the lamp bead LED6 and the resistor R4 are connected in series. The lamp bead LED3, the lamp bead LED7 and the resistor R5 are connected in series. The lamp bead LED4, the lamp bead LED8 and the resistor R6 are connected in series.

[0022] Furthermore, the lamp bead module also includes lamp bead LED9, lamp bead LED10, lamp bead LED11, lamp bead LED12, resistor R22 and resistor R23. The lamp bead LED9 and the lamp bead LED10 are respectively connected to the relay module, the lamp bead LED9 and the lamp bead LED10 are connected in parallel, the lamp bead LED9, the lamp bead LED11 and the resistor R22 are connected in series, and the lamp bead LED10, the lamp bead LED12 and the resistor R23 are connected in series.

[0023] Furthermore, the relay module is a repeater J1, and the repeater J1 is respectively connected to the daytime and night light module, the turn signal module and the lamp bead module.

[0024] In this embodiment, when the turn signal is turned on, the current flows through the voltage stabilizing diode TVS2, and the capacitor C7 and the resistor R29 are connected in parallel to GND to protect the entire circuit; then the current flows through the anti-reverse connection diode D6, and the other end of the diode D6 is connected to the positive electrodes of two series and two parallel yellow light beads (the lamp beads LED9, the lamp beads LED10, the lamp beads LED11, and the lamp beads LED12); then the steering power supply turns on the transistors Q10, Q11, Q12, Q13, and Q14 through the resistor R40; the emitters are connected to the resistors R11, R12, and R13. The resistor R12, the resistor R13, and the resistor R24 ​​are used to control the current. The emitter of the transistor Q15 is connected to GND. With GND as the reference point, the transistor Q15 is stepped down to about 0.7V to stabilize the emitter voltages of the transistors Q10, Q11, Q12, Q13, and Q14, thereby achieving a constant current effect. When the turn signal is on, the daytime and position lights are off, and there is an RC delay circuit, connecting the reverse-connected diode D4 to the resistor R8, and the other end of the resistor R8 is connected to the capacitors C3, C4, and C9 in parallel to set the delay time. When the daytime light is turned on, the position light is also lit. After the reverse connection protection diode D1, the current flows through the voltage regulator diode TVS1. The capacitor C2, the capacitor C1, and the resistor R7 are connected in parallel to GND to protect the entire circuit. The other end of the voltage regulator diode TVS1 is connected to the positive electrode of the white light lamp bead (the lamp bead LED1 to the lamp bead LED8). Then the position power supply turns on the transistor Q1 through the resistor R1, and the emitter of the transistor Q2 is connected to the resistor R13, the resistor R14, and the resistor R15 to control the current of the transistor that has been turned on. The emitter of the transistor Q15 is connected to GND. With GND as the reference point, the voltage of the transistor Q15 is reduced to about 0.7V to stabilize the transistors Q10, Q11, The emitter voltages of the transistors Q12, Q13 and Q14 are connected, thereby achieving a constant current effect; at the same time, the daytime running light turns on the transistors Q3, Q4 and Q5 through the resistor R2, and the transistor Q7 is used to control the emitter voltage of the transistor Q1. The current is set through the resistors R3 and R4 to achieve a constant current effect, and the position lights are also lit at the same time when the daytime running light is turned on; if the position lights are turned on, only the transistors Q1 and Q2 are turned on, and they are lit separately to achieve a constant current effect; protection circuits are used in multiple places in the entire circuit to reduce the possibility of circuit failure and improve the safety factor in later use; through the above structure, the constant current effect is improved, and the problem of uneven brightness of the lights is avoided when the vehicle voltage is unstable.

[0025] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A front combination lamp circuit with a constant current effect, characterized in that: It includes a PCB board, a relay module, a day and night light module, a turn signal module and a lamp bead module, wherein the relay module, the day and night light module, the turn signal module and the lamp bead module are arranged on the PCB board, and the day and night light module, the turn signal module and the lamp bead module are connected to the relay module respectively; The day and night light module includes a diode D1, a diode D2, a diode D3, a diode D4, a voltage-stabilizing diode TVS1, a resistor R1, a resistor R2, a resistor R7, a resistor R8, a resistor R9, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R21, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C9, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a transistor Q5, a transistor Q6, a transistor Q7 and a transistor Q9. The diode D1 is connected to the relay module and the resistor R2 respectively, the diode D2 is connected to the diode D1 and the diode D3 respectively, and the voltage-stabilizing diode TVS1, the resistor R7, the capacitor C1, the capacitor C2 and the resistor R1 are connected to the diode D2 respectively. The transistor Q1 is respectively connected to the resistor R1, the transistor Q6, the transistor Q2 and the resistor R13, the resistor R11 is respectively connected to the transistor Q6, the capacitor C5, the resistor R13, the resistor R14 and the resistor R15, the transistor Q5 is respectively connected to the transistor Q2 and the transistor Q3, the resistor R16 is respectively connected to the transistor Q5, the resistor R17, the resistor R18 and the resistor R19, the transistor Q4 is respectively connected to the transistor Q3, the resistor R19, the resistor R12, the resistor R2, the transistor Q7 and the transistor Q9, the capacitor C6 is connected to the resistor R12, the resistor R9 is respectively connected to the transistor Q9, the resistor R21, the capacitor C3, the capacitor C4, the capacitor C9 and the resistor R8, and the diode D4 is connected to the resistor R8.

2. The front combination lamp circuit with constant current effect as claimed in claim 1, characterized in that: The turn signal module includes a voltage stabilizing diode TVS2, a diode D6, a resistor R29, a capacitor C7, a capacitor C8, a resistor R40, a resistor R28, a transistor Q15, a transistor Q10, a transistor Q11, a transistor Q12, a transistor Q13, a transistor Q14, a resistor R27, a resistor R26, a resistor R25, a resistor R24, a resistor R35, a resistor R36, a resistor R37, a resistor R38 and a resistor R39. The voltage stabilizing diode TVS2 is connected to the relay module, and the diode D6 is respectively connected to the voltage stabilizing diode TVS2, the resistor R29, the capacitor C7, the capacitor C8 and the resistor R40. The resistor R40 The transistor Q15 is connected to the transistor Q15, and the transistor Q15 is respectively connected to the resistor R40, the resistor R35, the transistor Q10, the transistor Q11, the transistor Q12, the transistor Q13 and the transistor Q14, the resistor R28 and the resistor R35 are respectively connected to the transistor Q10, the resistor R27 and the resistor R36 are respectively connected to the transistor Q11, the resistor R26 and the resistor R37 are respectively connected to the transistor Q12, the resistor R25 and the resistor R38 are respectively connected to the transistor Q13, and the resistor R24 ​​and the resistor R39 are respectively connected to the transistor Q14.

3. The front combination lamp circuit with constant current effect as claimed in claim 1, characterized in that: The lamp bead module includes lamp bead LED1, lamp bead LED2, lamp bead LED3, lamp bead LED4, lamp bead LED5, lamp bead LED6, lamp bead LED7, lamp bead LED8, resistor R3, resistor R4, resistor R5 and resistor R6. The lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are respectively connected to the relay module. The lamp bead LED1, the lamp bead LED2, the lamp bead LED3 and the lamp bead LED4 are connected in parallel. The lamp bead LED5, the lamp bead LED6, the lamp bead LED7 and the lamp bead LED8 are connected in parallel. The lamp bead LED1, the lamp bead LED5 and the resistor R3 are connected in series. The lamp bead LED2, the lamp bead LED6 and the resistor R4 are connected in series. The lamp bead LED3, the lamp bead LED7 and the resistor R5 are connected in series. The lamp bead LED4, the lamp bead LED8 and the resistor R6 are connected in series.

4. The front combination lamp circuit with constant current effect as claimed in claim 3, characterized in that: The lamp bead module also includes lamp bead LED9, lamp bead LED10, lamp bead LED11, lamp bead LED12, resistor R22 and resistor R23. The lamp bead LED9 and the lamp bead LED10 are respectively connected to the relay module, the lamp bead LED9 and the lamp bead LED10 are connected in parallel, the lamp bead LED9, the lamp bead LED11 and the resistor R22 are connected in series, and the lamp bead LED10, the lamp bead LED12 and the resistor R23 are connected in series.

5. The front combination lamp circuit with constant current effect as claimed in claim 1, characterized in that: The relay module is a repeater J1, and the repeater J1 is connected to the day and night light module, the turn signal module and the lamp bead module respectively.

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