JP3093743U - Lamp lighting control circuit - Google Patents

Abstract

(57) Abstract: A lamp lighting control circuit suitable for a passing operation of intermittently lighting a high beam light of a headlight using an HID lamp is provided. A lamp lighting control circuit includes a power terminal JP.
1, JP2 and headlight connection terminals JP3, JP4, J
P5 and headlight control circuit terminals JP6, JP7 and JP8 are provided. Power terminals JP1 and JP2 are +1
They are connected to the 2V terminal and the body ground terminal, respectively. The headlight connection terminals JP3, JP4, and JP5 are
A signal in a plus control system or a minus control system for turning on the headlight is applied. After a control signal for turning on the high beam light of the vehicle headlight is applied to the high beam terminal of the headlight connection terminal JP3 to turn on the high beam light, a control signal for additionally turning on the low beam light is output for a predetermined time. It is output to the control circuit terminal JP7.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a lamp lighting control circuit, and more particularly, to a discharge tube (hereinafter HID (High Intensity Discharge) lamp) Suitable for passing operation performed in vehicle headlights used in beam mode Lamp lighting control circuit.

[0002]

[Prior art]

  High-beam light and low-light are used for the headlights for vehicles like the method using a halogen lamp. In order to switch to beam light, only high beam light and low beam light are contained in one lamp. Each lamp is equipped with a filament light emitting part near the center of the reflector. There is a form that does, but further improved brightness as a headlight, and a more natural color rendering Therefore, there is a vehicle headlamp using an HID lamp (for example, refer to Patent Document 1). ). The vehicle headlamp of Patent Document 1 is a discharge tube having a single light emitting portion. Both have the low beam / high beam switching means of the halogen lamp. It solves the problem of need. But move the light emitting part or shade The length of the mechanical part for this is increased, and various types of mechanical parts need to be stored in a standardized reflecting mirror. There was a limit. In addition, a vehicle front using the HID lamp described in Patent Document 1 There is a small vehicle headlight that solves the problem of the light (for example, refer to Patent Document 2). ).

[0003]         (Patent Document 1)           JP 2001-35211 A         (Patent Document 2)           Japanese Patent Application No. 2002-159571

[0004]   The vehicle headlight of Patent Document 2 uses a low beam / high beam switching signal. Therefore, the HID lamp is moved forward / backward while being eccentrically rotated. This allows the reflector The three-dimensional light emitting part of the HID lamp at a position suitable for high beam or high beam Further, it is provided with a rotation moving means for moving it to an arbitrary position and a rotation control means. Such special In the vehicle headlight of Japanese Patent Laid-Open Publication No. 2004-222, a rotation moving means for moving the light emitting portion of the HID lamp is provided. The high speed of about 0.2 seconds makes it suitable for using HID lamps as vehicle headlights. is doing.

[0005]

[Problems to be solved by the device]

  However, various vehicle headlights using HID lamps have the following problems. was there. That is, while driving a vehicle, call attention to other vehicles and people in the vicinity, The high beam light and low beam light of the headlight were intermittently switched for the purpose of sending Or a so-called passing operation is performed in which high beam light is turned on intermittently. It In this way, the passing operation for intermittently lighting the high beam light When using a vehicle headlight that uses an HID lamp such as a non-lamp, the characteristics of the discharge tube In addition, there are the following problems during the passing operation. That is, as shown in FIG. Even if a voltage is applied to the ID lamp, if a few seconds have not elapsed after the voltage was applied, a predetermined luminous flux will be emitted. Do not emit. Therefore, when the high beam light is turned on intermittently, the HID lamp It will be turned off and then turned on again, and the vehicle is The brightness of the headlight does not reach the desired brightness. For that purpose, the pass It is difficult to follow the operating time (1 to 2 seconds). Especially in the daytime, the surroundings are bright , I do not notice the passing that lights the high beam intermittently, It is difficult to call attention to people.

[0006]   Also, in order to bring the luminous flux at the time of starting the HID lamp to a predetermined value as soon as possible. In addition, as shown in Fig. 4, the HID lamp should be charged at 200% or more of the rated power at the initial start. In some cases, force is applied to cause overdrive. But HID Overdriving the lamp will overload the HID lamp drive circuit and HID lamp This is not preferable because it affects the life characteristics of each. Therefore, the H When overdriving the ID lamp, in the case of initial start and restart The degree of overload is reduced by changing the degree. However, the degree of overload is reduced However, by overdriving until several tens of seconds have passed, The HID lamp drive circuit and the HID lamp are overloaded, resulting in different life characteristics. Influencing is the same.

[0007]   The present invention alleviates this problem and provides a high beam light for a headlight using an HID lamp. The brightness is improved as much as possible even in the passing operation that lights up intermittently. To provide a lamp lighting control circuit suitable for improving the recognizability of lighting of a lamp. It was made for the purpose.

[0008]

[Means for Solving the Problems]

  In order to achieve the above object, the present invention provides a lamp lighting control circuit according to claim 1, Multi operated by a control signal that lights low beam light or high beam light When the high beam light is turned on by the control signal of the vehicle headlight in the beam mode A signal for lighting the low beam light after the high beam light is output for a predetermined time. And are characterized.

[0009]   The lamp lighting control circuit according to claim 2 is the lamp lighting control circuit according to claim 1. In the above, the lamp lighting control circuit is a switch circuit that switches the polarity of the control signal. It is characterized by having a path.

[0010]   The lamp lighting control circuit according to claim 3 is the lamp lighting control circuit according to claim 1. In the above, the vehicle headlamp is a discharge tube having a single light emitting portion. .

[0011]

[Embodiment of device]

  A lamp lighting control circuit according to an embodiment of the present invention will be described with reference to FIG. Note that In the embodiment of the present invention, the passing operation is performed by the high beam light of the vehicle headlight. It is an operation to turn on and off. The lamp lighting control circuit 1 includes power supply terminals JP1 and JP2, Headlight connection terminals JP3, JP4, JP which are connection terminals from the headlight 5 and a headlamp control circuit output terminal JP6 which is an output terminal to the vehicle headlamp control circuit, It has JP7 and JP8. Power supply terminals JP1 and JP2 are + 12V of battery Connected to the terminal and body ground terminal respectively. Headlight connection terminal JP3, JP4, and JP5 control the beam position of the headlight, which is a plus control described later. A signal of the control method or the minus control method is applied.

[0012]   The headlamp control circuit output terminals JP6, JP7, JP8 are described in, for example, Patent Document 2 above. The disclosed vehicle headlamp control circuit is connected. Headlight control circuit output A high beam control signal and a low beam control signal are output to the children JP6 and JP7. . The headlight control circuit output terminal JP8 corresponds to the headlight control circuit output terminals JP6 and JP7. It is a common line. Note that in FIG. 1, the headlight control circuit output terminal is disclosed in Patent Document 2. The description will be made assuming that the disclosed vehicle headlight control circuit is connected. Other vehicle headlamp control circuits may be used.

[0013]   The lamp lighting control circuit 1 prevents reverse connection of the polarity of the lamp lighting control circuit 1. Reverse connection prevention circuit 10, relay circuits 4 and 5, control method selection circuit 2, clock circuit 8, It is composed of an OR circuit 9. The control method selection circuit 2 includes a switch circuit 3a and 3b and transistor circuits 6 and 7. Of the lamp lighting control circuit 1 The power supply terminals JP1 and JP2 are connected to the reverse connection prevention circuit 10. Headlight The connection terminals JP3, JP4 and JP5 are terminals a, c and d of the switch circuits 3a and 3b. , And B are connected respectively.

[0014]   The reverse connection prevention circuit 10 is composed of a diode D1 and a capacitor C1. -RL1, RL2, and are supplied as drive voltages for the comparison circuit IC. Relay circuit Reference numeral 4 is composed of a relay RL1 and a transistor circuit for driving it. relay The circuit 5 is composed of the relay RL2 and a transistor circuit for driving the relay RL2.

[0015]   The switch circuits 3a and 3b include diodes D6, D7, D8, D10 and D. 11 to D14 is a diode bridge rectification circuit, the terminal a, B is for headlight connection terminals JP3 and JP4, terminal C and D are for common terminal JP5, Each is connected. In addition, the terminal of the diode bridge rectifier circuit The terminals G and H are connected to the transistor circuits 6 and 7, respectively. OR circuit 9 Is composed of diodes D3 and D4, and their anode terminals are input terminals and The cathode terminal is connected to the output terminal YO.

[0016]   The transistor circuit 6 includes a transistor Q4 and resistors R1, R12, R13. The emitter terminal of the transistor Q4 and one terminal of the resistor R12 are The terminal E of the Iodo Bridge rectifier circuit and the base terminal of the transistor Q4 are The other terminal of the resistor R12 and one terminal of the resistor R13 are connected. resistance The other terminal of the device R13 is connected to the terminal of the diode bridge rectifier circuit . The collector terminal of the transistor Q4 is connected to one terminal of the resistor R1 and the relay circuit 4. The input terminal E and the input terminal LE of the clock circuit 8 are connected respectively. Resistor R The other terminal of 1 is grounded.

[0017]   The transistor circuit 7 includes a transistor Q1, resistors R5 and R6, It is composed of R7, and the emitter terminal of the transistor Q1 and one terminal of the resistor R5 are The terminal of the diode bridge rectifier circuit, the base terminal of the transistor Q1 The other terminal of the resistor R5 and one terminal of the resistor R6 are connected. Resistor The other terminal of R6 is connected to the terminal of the diode bridge rectifier circuit. To The collector terminal of the transistor Q1 is connected to one terminal of the resistor R7 and one of the OR circuits 9. One of the input terminals is connected. The other terminal of the resistor R7 is grounded.

[0018]   The relay circuit 4 includes a relay RL1 and a transistor Q3 that drives the relay RL1. The collector terminal of the transistor Q3 is the anode terminal of the diode D5, and the relay R It is connected to the terminal 5 of L1. The cathode terminal of the diode D5 and a relay Terminal 2 of RL1 is the output terminal of reverse connection prevention circuit 10 (capacitor C1 and diode Connected to the cathode terminal of the relay D1), and when the relay RL1 is opened and closed. The breakdown of the transistor Q3 due to the counter electromotive force is prevented. Also, the transistor Q3 The emitter terminal and one terminal of the resistor R11 are grounded, and the base terminal is resistor R 10 is connected to one terminal and the other terminal of the resistor R11. The resistor R The other terminal of 10 is connected to the input terminal of relay circuit 4. Relay RL1 Is provided with contacts 1 and 6 and is always closed to the contact 1 side. Relay RL1 is activated Then, the contact 6 is closed, and the headlamp control circuit output terminal JP6 is connected to the power supply terminal JP1. To + 12V is applied.

[0019]   The timing circuit 8 includes a diode D2, capacitors C2 and C4, resistors R2 and R3. And R4, and a comparator IC. The anode terminal of diode D2 is Circuit 8 is connected to the input terminal of the circuit 8 and its cathode terminal is connected to capacitors C2 and C4. , One terminal of the resistor R2 and the + input terminal of the comparison circuit IC, respectively. There is. One terminal of the resistors R3 and R4 is connected to the minus input terminal of the comparison circuit IC. Has been done. The other terminals of resistors R2 and R3 and capacitor C2 are grounded and The other terminal of the resistor R4 is connected to the output terminal of the reverse connection prevention circuit 10. ratio The output terminal 7 of the comparator circuit IC is connected to the other terminal of the capacitor C4 and the other terminal of the logical sum circuit 9. It is connected to the input terminal of.

[0020]   Further, the relay circuit 5 includes a relay RL2 and a transistor Q2 for driving the relay RL2. The collector terminal of the transistor Q2 and the anode terminal of the diode D9 are It is connected to the terminal 2 of the ray RL2. A cathode terminal of the diode D9, The terminal 5 of the relay RL2 is connected to the output terminal of the reverse connection prevention circuit 10, The transistor Q2 is prevented from being damaged by the counter electromotive force when the relay RL2 is opened and closed. Also, the emitter terminal of the transistor Q2 and one terminal of the resistor R9 are grounded, The source terminal is connected to one terminal of the resistor R8 and the other terminal of the resistor R9. It The other terminal of the resistor R8 is connected to the output terminal Y of the OR circuit 9. The relay RL2 includes contacts 1 and 6 and is normally closed on the contact 1 side. relay When RL2 operates, it is closed on the contact 6 side, and the headlamp control circuit output terminal JP7 is electrically charged. + 12V is applied from the source terminal JP1.

[0021]   The embodiment of FIG. 1 is a well-known plus control method or minus control method It can also be used in expressions. Here, the positive control method and the negative control method are as follows. Control method. That is, in the positive control system, the HID line (not shown) One terminal of the lamp is connected to the common terminal JP5 of the headlight connecting terminal, It is connected to the ground side. The other terminal of the HID lamp is the headlight connection end It is connected to the children JP3 and JP4. The terminals JP3 and JP4 are respectively illustrated. A 12V power supply is applied to either terminal via a switch that is not connected. Also In the minus control system, one terminal of the HID lamp (not shown) It is connected to the common terminal JP5 of the first connection terminals and a + 12V power source is applied. The other terminal of the HID lamp is connected to the headlight connection terminals JP3 and JP4. ing. Either of the terminals JP3 and JP4 is a switch not shown. Is connected to the ground side of the vehicle body. That is, plus control method and minus control method And, the polarities of the voltages applied to JP3, JP4, and JP5 are different. Therefore, The polarity of the signal for switching between the i-beam and the low-beam is different, and the lamp lighting control circuit 1 is provided with switch circuits 3a and 3b for switching the polarity of the signal applied thereto.

[0022]   The operation in FIG. 1 will be described below with reference to FIG. Note that the description is simplified Therefore, the positive control method shall be used for control, but in the case of the negative control method Also, in the operation of the switch circuits 3a and 3b, Since they are the same, the description is omitted. That is, the switch circuits 3a and 3b are Headlight connection terminals JP3, JP in both control method and minus control method To make each of the transistors Q4 and Q1 conductive by the signal applied to the four terminals Act on.

[0023]   The high beam light side of the vehicle headlight is turned on by the start of the passing operation. When the beam control signal a is applied to the headlight connection terminal JP3, the high beam The switch circuit 3a operates. The output of the high beam switch circuit 3a is a transistor It is applied to the relay circuit 4 via the circuit 6 to make the transistor Q3 conductive. To The relay RL1 is activated by the conduction of the transistor Q3, and the relay contact 6 is closed. + 12V is applied to the headlamp control circuit output terminal JP6 as the high beam lighting signal b To be done.

[0024]   After the high beam control signal a is applied to the headlight connection terminal JP3 When the passing operation is completed after the interval T1, the high beam control signal a is cut off. Ha When the E-beam control signal a is cut off, the transistor Q3 turns off and the relay The signal applied to the circuit 4 is cut off, the relay RL1 is restored, and the relay connection The point 1 is closed and the high beam lighting signal b of the headlamp control circuit output terminal JP6 becomes zero. Become.

[0025]   On the other hand, the output of the high beam switch circuit 3a is also applied to the input terminal of the clock circuit 8. Is applied to the diode D2. The signal applied to the diode D2 is , Charge the capacitor C2. Resistors R3 and R4 determine the minus terminal side of the comparator IC The applied voltage VR is applied. The voltage of the capacitor C2 exceeds the above voltage VR. Then, the comparator IC operates and the signal VC is output to the output terminal 7. According to the signal VC The capacitor C4 is charged, and one of the input terminals of the OR circuit is The signal VC is applied. The signal VC is also applied to one input terminal of the logical sum circuit Then, the transistor Q2 of the relay circuit 5 becomes conductive and the relay RL2 operates. Then, the relay contact 6 is closed and + 12V is applied to the headlamp control circuit output terminal JP7. It is applied as one low beam lighting signal c.

[0026]   On the other hand, the voltage of the capacitors C2 and C4 charged by the high beam control signal a is increased. The pressure is discharged through the resistor R2 when the high beam control signal a is cut off. The release The voltage of the capacitor C2 gradually decreases due to the electric power, and the high beam control signal a is cut off. After that, time TC (for example, 0.5 seconds) determined by capacitors C2 and C4 and resistor R2 After the passage of time, the voltage becomes lower than the voltage VR applied to the negative terminal side of the comparator IC. The device IC is activated and the signal at the output terminal 7 disappears. That is, the comparator IC has time (T1 + TC), signal output. When the signal disappears, one of the inputs of the OR circuit The signal is no longer applied to the force terminal. One input terminal of the logical sum circuit When the signal VC disappears, the transistor Q2 is turned off and the relay RL2 is restored. At the same time, the relay contact 1 is closed and the first low level of the headlight control circuit output terminal JP7. The beam lighting signal c becomes zero.

[0027]   That is, the first low beam lighting signal c is changed to the time (T It is being output for 1 + TC). Therefore, the headlight control circuit output terminal JP6, At the same time, + 12V is output to JP7 during the time T1. The reason is the patent document The vehicle headlamp control circuit disclosed in No. 2 has the lamp control circuit output terminals JP6, JP. When + 12V is output to 7 at the same time, the high beam is prioritized and the low beam is turned on. This is because it is not affected by the signal. Headlight control circuit output terminals JP6, JP In the case of the control circuit method that prohibits + 12V from being applied to 7 at the same time, Instead of the clock circuit 8, for example, a monostable circle operated by a high beam control signal a For a predetermined time TC after the high beam control signal a is cut off by a vibrator or the like The second low beam lighting signal in which the headlamp control circuit output terminal JP7 becomes + 12V during You may output d.

[0028]   The passing operation is restarted after an arbitrary time T2, During the period T3, the high beam control signal a by passing is output, The first low beam lighting signal c or the second low beam lighting signal d is output. More than In this way, the vehicle headlight has a When the signal to turn on the light beam side is cut off, the signal to turn on the low beam light side is It is additionally output for a predetermined time.

[0029]   Further, the signal e is a low beam control signal, which is transmitted to the headlight connection terminal JP4 at time T When the voltage is applied during 4, the low beam switch circuit 3b is activated. Low beams The output of the switch circuit 3b is applied to the other input terminal of the logical sum circuit 9 and the relay circuit Actuate path 5. When the signal is applied to the other input terminal of the logical sum circuit, The transistor Q2 of the relay circuit 5 becomes conductive, the relay RL2 operates, and The relay contact 6 is closed and + 12V is supplied to the headlamp control circuit output terminal JP7. Only the dome lighting signal f is applied only during the time T4. That is, the high beam operation signal Is not output.

[0030]   The lamp lighting control circuit 1 shown in FIG. 1 is disclosed in FIG. An embodiment applied to the existing vehicle headlamp will be described below. Understanding the invention In order to facilitate the above, the vehicle headlamp disclosed in Patent Document 2 will be described. Without explaining. The vehicle headlamp disclosed in Patent Document 2 emits light from an HID lamp. Reflecting mirror that reflects the emitted light forward, and the light emitted from the HID lamp. The light emitted directly to the front and the light emitted downward from the reflecting mirror are blocked. The present invention is applied to a vehicular headlamp in a multi-beam mode having a shielding means for The above Rotate the HID lamp eccentrically and move it forward / backward to move the reflector low beam or high beam. Equipped with a rotation moving means for moving the light emitting portion of the HID lamp to a position suitable for the beam. It is a vehicle headlight.

[0031]   The signal for rotating the light emitting portion of the HID lamp is output from the headlight control circuit. High beam lighting signal b, first roby obtained at terminals JP6 and JP7, respectively The lighting signal c or the second low beam lighting signal d is used. That is, the high beam lighting signal No. b moves the light emitting part of the HID lamp to a position suitable for the high beam of the reflecting mirror. Let The low beam lighting signal c or the second low beam lighting signal d The light emitting part of the HID lamp is moved to a position suitable for the low beam of the reflecting mirror. Take The rotational movement time is about 0.2 seconds.

[0032]   In FIG. 3, the lamp lighting control circuit 1 includes a power source terminal JP1, JP2 and a headlight. Connection terminals JP3, JP4, JP5 and headlamp control circuit output terminals JP6, JP7, Equipped with JP8. Power supply terminals JP1 and JP2 are connected to the + 12V terminal of the battery Each is connected to the de-earth terminal. Headlight connection terminals JP3, JP 4, JP5 is a plus control method described later for controlling the beam position of the headlight or A signal in the negative control system is applied. Headlight control circuit output terminals JP6, JP 7 and JP8, the vehicle headlight control circuit 30 disclosed in Patent Document 2 is provided. , Two sets for the left and right headlights, respectively.

[0033]   High beam that lights the high beam side of the vehicle headlight by passing operation When the control signal a is applied to the headlight connection terminal JP3, as described above, The high beam lighting signal b is output to the lamp control circuit output terminal JP6 for the time T1. The vehicle headlamp control circuit 30 responds to the HID run by the high beam lighting signal b. Move the light emitting part of the lamp to a position suitable for the high beam of the reflecting mirror to illuminate a predetermined position. . At this time, the first low beam lighting signal c is also output to the headlight control circuit output terminal JP7. However, as described above, the high beam is prioritized in the vehicle headlight control circuit 30. Since it is not affected by the low beam lighting signal, it reflects the light emitting part of the HID lamp. Move it to a position suitable for the high beam of the mirror.

[0034]   The headlight control circuit is output for a predetermined time TC after the high beam control signal a is cut off. When the first low beam lighting signal c at which the power terminal JP7 becomes +12 V is output, The headlight control circuit 30 controls the HID lamp by the first low beam lighting signal c. After about 0.2 seconds, the light emitting part of is moved to a position suitable for the low beam of the reflecting mirror. Above As described above, the high beam control signal a is blocked by the first low beam lighting signal c. The low beam position is illuminated for about 0.5 seconds after being turned on. That is, no passing operation Be done. The predetermined time TC may be other than 0.5 seconds, and the vehicle headlamp may be used. It will be decided as appropriate. As described above, even if the high beam light is turned on intermittently, H The ID lamp will be lit for an extended period of time TC, which will Even when the lighting operation is performed, the brightness of the vehicle headlights is activated to the specified brightness, and normal operation is performed. Follow the passing operation time (1 to 2 seconds). As a result, even in the daytime It is possible to call attention to hand-held vehicles and people around them.

[0035]

[Effect of device]

  According to the lamp lighting control circuit of claim 1, a low beam light or a high beam light is used. Of the vehicle headlight in the multi-beam mode that is activated by the control signal that turns on the beam light. When the high beam light is turned on by the control signal, the high beam light is turned on by the control signal. Any of the signals for lighting the high beam light or the low beam light subsequently to the beam light By outputting one of them for a certain period of time, high beam light or Can realize a vehicle headlight in which either one of the low beam lights is extended.

[0036]   According to the lamp lighting control circuit of claim 2, the lamp lighting control circuit comprises: By providing a switch circuit that switches the polarity of the control signal, the positive control method The present invention can be applied to both headlamps for vehicles of a negative type and a negative control type.

[0037]   According to the lamp lighting control circuit of claim 3, the vehicle headlamp is a single light emitting unit. Since it is a discharge tube that has a Thing operation becomes possible.

[Brief description of drawings]

FIG. 1 is an embodiment of a lamp lighting control circuit of the present invention.

FIG. 2 is a time chart for explaining the operation of the lamp lighting control circuit of the present invention.

FIG. 3 is an application example of a lamp lighting control circuit of the present invention.

FIG. 4 is a diagram showing a change in power control at startup of a conventional HID lamp.

FIG. 5 is a diagram showing a change in luminous flux at startup of a conventional HID lamp.

[Explanation of symbols]

1 Lamp lighting control circuit 2 Control method selection circuit 3a, 3b switch circuit 4, 5 relay circuit 6, 7 transistor circuit 8 clock circuit 9 OR circuit 10 Reverse connection prevention circuit RL1, RL2 relay

[Procedure amendment]

[Submission date] January 7, 2003 (2003.1.7)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (3)

[Scope of utility model registration request] 1. When the high beam light is turned on by the control signal of a vehicle headlamp in a multi-beam mode which is operated by a control signal for turning on the low beam light or the high beam light, the low beam light is turned on subsequently to the high beam light. A lamp lighting control circuit, which outputs a signal for controlling the lamp for a predetermined time. 2. The lamp lighting control circuit according to claim 1, wherein the lamp lighting control circuit includes a switch circuit for switching the polarity of the control signal. 3. The lamp lighting control circuit according to claim 1, wherein the vehicle headlamp is a discharge tube having a single light emitting portion.