JP2587017Y2 - Cornering lamp lighting circuit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cornering lamp lighting circuit for lighting a cornering lamp.

[0002]

2. Description of the Related Art Conventionally, a cornering lamp 1, a turn signal lamp 2, a small lamp 3 and the like are electrically connected to a control circuit 4 provided on an instrument panel by a vehicle harness 5 as shown in FIG. Each of the lamps 1 to 3 is turned on, blinked, turned off and the like by a signal from the circuit 4.

In some cases, the cornering lamp 1 may be retrofitted.
A new vehicle harness must be passed through the vehicle body in order to connect the control circuit 4 and the control circuit 4, and the operation is troublesome.

In view of the above, there has been proposed a circuit in which a cornering lighting circuit is provided in a housing of a lamp, and the cornering lamp is lit by a blinking signal of a turn signal lamp 2 by the cornering lighting circuit.

[0005]

However, in such a cornering lighting circuit, when a hazard switch (not shown) is operated, only the left and right turn signal lamps 2 need to be blinked. In addition to the flashing of the turn signal lamp, the cornering lamp 1 is also turned on by the flashing signal for the vehicle.

[0006] This invention has been made in view of the above problems, and an object, when the hazard switch is operated, as cornering lamp is not lit
And the cornering lamp was retrofitted.
An object of the present invention is to provide a cornering lighting circuit that does not require a new vehicle harness to pass through the vehicle body in such a case .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cornering device which converts a blinking signal for blinking turn signal lamps provided on the left and right sides of a vehicle into a lighting signal and lights the left and right cornering lamps respectively. A lamp lighting circuit , wherein the cornering lamp lighting circuit
Is the first point provided near the left cornering ramp
Provided near the lighting circuit and the right cornering lamp
And a second lighting circuit .
Smoothing the flashing signal of the
A first smoothing circuit to be turned on and turned on by the lighting signal.
To turn on the left cornering lamp.
And a second transistor, and the second lighting circuit
Smoothes the flashing signal of the on-signal lamp and converts it into a lighting signal
And a second smoothing circuit to be turned on by the lighting signal.
The second power to turn on the left cornering lamp by
Transistor, and the first lighting circuit further comprises a
The second power transistor by the signal smoothed by one smoothing circuit
The first lighting circuit comprises a first prohibiting circuit for turning off the
The first power transition is performed by the signal smoothed by the second smoothing circuit.
A second prohibition circuit for turning off the star is provided .

[0008]

According to the present invention, when the hazard switch is operated and the left and right blinking signals for blinking the left and right turn signal lamps are output simultaneously, the first and second prohibitions are provided.
The circuit uses the signals smoothed by the first and second smoothing circuits
Turn off one power transistor and turn left and right
Prohibits lighting of the lamp.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cornering lighting circuit according to the present invention will be described below with reference to the drawings.

1 and 2, reference numeral 10 denotes a right cornering lamp, reference numeral 12 denotes a turn signal lamp, and reference numeral 13 denotes a turn signal lamp.
Is a small lamp, and 14 is a headlight.

The cornering lamp 10 includes a housing 21 having a bulb 20 and a lens 22 attached to a front opening of the housing. A circuit case 30 is integrally attached to the housing 21.

Similarly, the left cornering lamp 10A
Has a similar configuration, and a case 30A is integrally attached to a housing (not shown).

Reference numeral 23 denotes a socket in which the valve 20 is mounted;
A power supply line 4 for supplying power to the bulb 20 is connected to the small lamp 13. 25 is a signal input line connected to a signal line (not shown) of the turn signal lamp 12;
Reference numerals 6 and 27 denote lighting circuits ( described below) provided in the case 30 .
1 lighting circuit) is a lead wire connecting a lighting circuit (second lighting circuit) 60 provided in the case 30A to be described later.

A circuit board (not shown) is provided in the cases 30 and 30A. As shown in FIG. 3, the circuit board has a lighting circuit for lighting the bulb 20 by a blink signal for blinking the turn signal lamp 12. Circuits 40, 60
Is provided.

The lighting circuit 40 includes a power transistor (power MOS FET) 41 connected in series to the bulb 20.
And a smoothing circuit 42 for smoothing the blinking signal S1 input to the signal input line 25 and inputting the same to the gate 41G of the power transistor 41. The smoothing circuit 42 includes a diode 43, a capacitor 44, resistors R1 to R4, and the like.

When the smoothed signal S2 smoothed by the smoothing circuit 42 is input to the gate 41G of the power transistor 41,
The power transistor 41 conducts and turns on the bulb 20. That is, the cornering lamp 10 is turned on while the turn signal lamp 12 is blinking. The lighting circuit 60 also has the same configuration as described above, and a description thereof will be omitted.

The transistor 41 for setting the gate potential to the ground potential is connected to the gate 41G of the power transistor 41.
5 is connected, and the base of the transistor 45 is connected to a resistor R
5, and a series circuit of a resistor R6 and a diode 46 is connected. The anode of the diode 46 is connected to the capacitor 64 of the lighting circuit 60. When the capacitor 64 is charged by the blink signal S11 and reaches a predetermined potential, the transistor 45 is turned on.

Similarly, a transistor 65 is also connected to the gate 61G of the power transistor 61 of the lighting circuit 60. The base of the transistor 65 is grounded via a resistor R25, and a series circuit of a resistor R16 and a diode 66 is connected. It is connected. The anode of the diode 66 is connected to the capacitor 44 of the lighting circuit 40, and when the capacitor 44 is charged by the blink signal S1 and reaches a predetermined potential, the transistor 65 is turned on. Then, the transistors 45 and 65 and the resistors R5 and R6,
A prohibition circuit is formed by R16, R25 and diodes 46, 66 and the like.

Next, the operation of the cornering lighting circuit of the above embodiment will be described.

When the blinking signal S1 is input to the signal input line 25, the blinking signal S1 is smoothed by the smoothing circuit 42 to become a smoothed signal S2, and this smoothed signal S2 is input to the gate 41G of the power transistor 41 and
Is made conductive. The cornering lamp 10 is turned on by the conduction of the power transistor 41.

The input of the blink signal S1 causes the capacitor 44
Is charged, and the potential of the capacitor 44 is increased.
This potential is applied to the base of the transistor 65 via the diode 66 and the resistor R16.
Is conducted, the gate 61G of the power transistor 61 is grounded, and the power transistor 61 is forcibly turned off.

When the blinking signal S11 is input to the signal line 25A, the blinking signal S11 is smoothed by the smoothing circuit 62 to become a smoothed signal S12 in the same manner as described above. Light. Then, since the capacitor 44 is charged by the input of the blink signal S11, the potential of the capacitor 44 is increased, so that the transistor 65 is turned on, the gate 41G of the power transistor 41 is grounded, and the power transistor 41 is forcibly turned off. You.

A blinking signal S1, is simultaneously applied to the signal lines 25, 25A.
When S11 is input, both capacitors 44 and 64 are charged to a high potential, so that transistors 45 and 65 are turned on. As a result, the power transistors 41 and 61 are forcibly turned off, and the cornering lamps 10 and 10A are not turned on.

That is, when the blinking signals S1 and S11 are simultaneously output by operating a hazard switch (not shown), the turn signal lamps 12 and 12A blink, but the cornering lamps 10 and 10A do not light. Ma
In addition, according to this embodiment, the corner
Turn on and off the lamps 10 and 10A
The cornering lamps 10 and 10A
The cornering lamps 10 and 10A are turned on.
New vehicle harness and hazard switch on
The left and right cornering lamps 10 and 10A
It is necessary to pass a new vehicle harness for lighting
Absent. That is, the cornering lamps 10 and 10A are
Even if it is attached, there is no need to pass one vehicle harness through the body
No. A vehicle harness wired between the lighting circuits 40 and 60 is also provided.
Only two wires are required.

FIG. 4 shows another embodiment. In this embodiment, a single conductor 99 is used to connect the lighting circuit 70 and the lighting circuit 100 to each other.

In FIG. 4, the lighting circuit 70 includes transistors T1, T2, T3, a diode D1, and resistors R31 to R37 in addition to a smoothing circuit. Lighting circuit 1
Reference numeral 00 includes, in addition to the smoothing circuit, transistors T41, T42, T43, a diode D41, and resistors R31 to R37. The point K1 of the lighting circuit 70 and the point K2 of the lighting circuit 100 are connected by a conducting wire 99.

Next, the operation of the above embodiment will be described.

When the small lamps 13, 13 are turned on, the voltage of the small lamp is applied to the base of the transistor T2 of the lighting circuit 70 via the diode D1 and the resistor R34, so that the transistor T2 conducts, and the resistors R31, R
A current flows through the series circuit of 32 and R33. Similarly, the transistor T42 of the lighting circuit 100 conducts, and the resistors R41, R42, R
Current flows through the 43 series circuits. The potentials of the points K1 and K2 are set to be about 7 volts.

In these states, the gates 41 of the power transistors 41, 61 are turned on by the conduction of the transistors T2, T42.
Since G and 61G have zero potential, the power transistor 4
1,61 turns off and the cornering lamp 10,10A
Does not light.

In this state, the signal input line 25
When the blinking signal S1 is input to the, the blinking signal S1 is smoothed by the smoothing circuit 42 to become a smoothed signal S2. The transistor T1 is turned on by the smoothed signal S2, and the transistor T2 is turned on.
Turns off. When the transistor T2 is turned off, a current flows to the base of the transistor T3, and the transistor T3 is turned on. Due to the conduction of the transistor T3, a current flows through the resistor R35, and the potential at the point N1 becomes a low potential V1 (set to about 6 volts).

The potential V1 changes the potential of the gate 41G to a low potential for turning off the power transistor 41. However, the point K1 of the lighting circuit 70 and the point K2 of the lighting circuit 100 are connected by the conducting wire 99, and the lighting circuit 100 K
Since the potentials at the two points are kept at 7 volts, the potential of the gate 41G is kept at a high potential (about 4 volts), the power transistor 41 is turned on, and the cornering lamp 10 is turned on.
Will light up.

Similarly, when the blink signal S11 is input only to the signal input line 25A, the power transistor 61 is turned on, and the cornering lamp 10A is turned on.

The blinking signals S1, S1 are applied to the signal input lines 25, 25A.
When 1 is input at the same time, the point N1 of the lighting circuit 70 and the point N2 of the lighting circuit 100 have a low potential V1 (about 6 volts).
The potential V1 further lowers the potentials of the K1 and K2 points (about 4 points).
Volts), and the potentials of the gates 41G and 61G of the power transistors 41 and 61 become lower potentials (about 1.5 volts). Thereby, the power transistors 41, 6
1 turns off, and the cornering lamps 10 and 10A do not light.

In this embodiment, the transistor T3
The diode D1, the resistors R31 to R33, R35, the transistor T43, the diode D41, and the resistors 41 to R43, R45 form a prohibition circuit.

[0035]

According to the invention, when the left and right blink signals are simultaneously output by operating the hazard switch, the left and right turn signal lamps blink, but the left and right cornering lamps do not light. Moreover, the cornering lamp
If the cornering lamp is turned on when
New vehicle harnesses and hazard switches are turned on
To turn off the left and right cornering lamps when
There is no need to pass a new vehicle harness through the body. Also,
The number of vehicle harnesses to be wired between the first and second lighting circuits is also small.
You don't have to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vehicle body to which a lighting circuit according to the present invention is applied.

FIG. 2 is a perspective view showing a cornering lamp.

FIG. 3 is a circuit diagram showing a configuration of a lighting circuit.

FIG. 4 is a circuit diagram showing a lighting circuit according to another embodiment.

FIG. 5 is a perspective view showing a vehicle body for explaining a conventional problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cornering lamp 10A Cornering lamp 12 Turn signal lamp 30, 30A Lighting circuit 45 Transistor 65 Transistor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60Q 1/18 B60Q 1/34

Claims (1)

(57) [Scope of request for utility model registration] 1. A cornering lamp lighting circuit for lighting a left and right cornering lamps each blink signal for blinking the turn signal lamp provided on the left and right into a lighting signal of the vehicle, the cornering lamp lighting circuit, the left Cornering
The first lighting circuit provided near the lamp and the right corner
A second lighting circuit provided near the ring lamp.
The first lighting circuit is the left turn signal lamp
First smoothing circuit that smoothes the blinking signal of the camera and converts it into a lighting signal
And the left cord is turned on by the lighting signal.
The first power transistor that turns on the nulling lamp and
Comprising a second lighting circuit, blink signal of the right turn signal lamp
A second smoothing circuit for smoothing and converting to a lighting signal;
Turn on by the light signal to turn the left cornering rail
A second power transistor for lighting the lamp, and a first lighting circuit further comprises a signal smoothed by the first smoothing circuit.
Turns off the second power transistor for the first prohibited time
The second lighting circuit includes a signal smoothed by the second smoothing circuit.
Signal to turn off the first power transistor
Cornering lamp lighting circuit comprising the circuit.