JPH07114805A - Headlamp device for vehicle - Google Patents

Abstract

PURPOSE:To prevent a danger of an electric shock and noise by applying the staring voltage outputted from an igniter to a discharge lamp without through an electric wire. CONSTITUTION:A lamp body 1 has a reflecting mirror 13 inside, and an igniter 2 is installed in a rear part. A recessed part 21 is formed on a front surface of the igniter 2, and a high voltage electrode is arranged on a bottom surface of the recessed part 21. A mount 34 of a discharge lamp 3 is sandwiched between the reflecting mirror 13 and the igniter 2, and the discharge lamp 3 is connected to the high voltage electrode of the igniter 2 through a socket 31 engaged with the recessed part 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular headlamp device using a discharge lamp which requires application of a high-voltage starting voltage at the time of starting.

[0002]

2. Description of the Related Art In recent years, it has been proposed to use a discharge lamp such as a metal halide lamp as a vehicle lighting, especially as a headlight. In order to light this kind of discharge lamp, it is necessary to apply a high-voltage starting voltage at the time of starting, and in addition to a ballast for stably lighting the discharge lamp, a lighting equipped with an igniter that generates the starting voltage. A circuit is needed.

By the way, when the lamp body having the discharge lamp and the reflecting mirror and the above-mentioned lighting circuit are arranged at different parts in the vehicle, an electric wire for giving a starting voltage from the igniter to the discharge lamp is exposed to the outside of the lamp body. It will be. Since the starting voltage is a high voltage, there is a risk of electric shock if it is exposed to the outside of the lamp body.Because the starting voltage is generated only for a short time at startup, radiation from the above wires will occur and noise will be generated outside. Will also occur.

As described above, when the electric wire connecting the discharge lamp and the lighting circuit is exposed to the outside of the lamp body, not only there is a possibility of electric shock but also a problem of noise source. So, as a technology to solve this kind of problem,
As in the invention described in JP-A-4-149901, the lighting circuit 8 is integrally coupled to the rear part of the headlamp 1 and is connected to the output end of the lighting circuit 8 via the electric wire 10. A configuration has been proposed in which the discharge lamp 3 is coupled to the connector 9 inside the lamp body 1 (see FIG. 25).

[0005]

In the above structure, since the lighting circuit 8 is integrally connected to the rear portion of the lamp body 1, the electric wire 10 is not exposed to the outside of the lamp body 1 and the risk of electric shock is avoided. However, since the connector 9 for connecting the discharge lamp 3 is connected to the lighting circuit 8 via the electric wire 10, the noise radiated to the outside when the discharge lamp 3 is started is sufficiently reduced. The problem remains that it is difficult to do. Further, since the discharge lamp 3 is inserted into the connector 9 which is not fixed at a fixed position, when used as a vehicle headlight, vibration or impact may cause insufficient contact or discharge. Problems such as the lamp 3 falling off from the connector 9 are likely to occur.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and a starting voltage output from an igniter can be applied to a discharge lamp without passing through an electric wire to prevent danger of electric shock or noise generation. Moreover, it is an object of the present invention to provide a vehicle headlight device that prevents contact failure or dropout of the discharge lamp due to vibration or shock.

[0007]

According to a first aspect of the present invention, there is provided a lamp body including a reflecting mirror, a discharge lamp arranged together with the reflecting mirror in the lamp body, a ballast for stably lighting the discharge lamp, and a discharge. In a vehicle headlight device including an igniter that applies a high-voltage starting voltage to a discharge lamp when the lamp is started, a discharge lamp is installed in a high-voltage generating unit of the igniter that receives a low voltage and generates a high voltage. A connecting part to be mounted is integrally provided, and at least a high pressure generating part of the igniter of the ballast and the igniter is attached to the lamp body so that the connecting part faces the lamp body.

According to a second aspect of the present invention, in the first aspect of the present invention, the connecting portion has a recess into which a part of the discharge lamp is inserted, and the spring force in the recess is such that the discharge lamp is pushed out from the recess. A discharge lamp having a plurality of coupling projections on one side of the outer peripheral surface of the insertion portion of the discharge lamp into the recess and the inner peripheral surface of the recess, and the other projection meshes with the coupling projection to discharge. It is characterized in that a coupling groove for preventing the lamp from coming off is formed.

According to a third aspect of the present invention, in the first or second aspect of the invention, the igniter and the ballast are separate bodies, and the igniter is provided with the above-mentioned connecting portion, and one of the igniter and the ballast is provided. The present invention is characterized in that a connector pin is provided so as to project and a pin receiver into which the connector pin is inserted is formed, and the igniter and the ballast are electrically connected via the connector pin and the pin receiver.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the igniter is provided with a high voltage pulse transformer for generating a high voltage on the secondary side, and at least a component of a high voltage generating portion of the igniter is mounted on the wiring board. And a low voltage side electrode of the electrodes of the connection portion for connecting the discharge lamp is provided on the wiring board. The invention of claim 5 is characterized in that, in the invention of claim 4, the electrode on the high voltage side of the electrodes of the connecting portion for connecting the discharge lamp is provided integrally with the high voltage pulse transformer.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, a plurality of wiring boards each having a metal plate as a base material are provided, and the wiring boards surround the high voltage pulse transformer when they are coupled to each other. It is characterized in that it is formed in the shape of a shape. According to a seventh aspect of the present invention, in the first aspect of the present invention, there is provided a case in which at least a high pressure generating portion of the igniter is installed, and a connecting tube into which a part of the discharge lamp is inserted is integrally formed on one surface of the case. It is characterized by consisting of.

According to an eighth aspect of the present invention, in the first aspect of the present invention, there is provided a case in which a high-voltage generating unit including at least a high-voltage pulse transformer in the igniter is installed, and a part of the discharge lamp is inserted into one surface of the case. The connecting cylinder is integrally formed, and the bobbin of the high-voltage pulse transformer is integrally provided with a cylindrical wall located inside the connecting cylinder. Inside the cylindrical wall, the electrode of the igniter connected to the discharge lamp is connected. Among them, the high voltage side electrode is provided, and the low voltage side electrode of the igniter electrode connected to the discharge lamp is provided on the inner peripheral surface of the connecting cylinder.

According to a ninth aspect of the present invention, in the first aspect of the invention, only the high pressure generating portion of the igniter is attached to the rear portion of the lamp body. According to a tenth aspect of the present invention, in the first aspect of the present invention, a cylindrical portion having a rear surface opened is provided at a rear portion of the lamp body so that at least the high pressure generating portion of the igniter can be detachably attached to the cylindrical portion. First attaching means for attaching is provided, and second attaching means for detachably attaching a support base for holding the halogen lamp by contacting the rear surface of the reflecting mirror is provided inside the lamp body. It is characterized by

[0014]

According to the structure of the present invention, at least the igniter is integrally provided with a connecting portion for mounting a discharge lamp disposed in the lamp body on a high voltage generating portion for receiving a low voltage and generating a high voltage. The discharge lamp is attached to the connection part provided on the output side of the igniter by attaching at least the high pressure generating part of the igniter to the light body with the connection part facing the light body. Since the portion to which the high-voltage starting voltage is applied is not exposed to the outside of the lamp body, there is no danger of electric shock during the work of mounting the discharge lamp, etc., and the work can be performed safely. Moreover, since the igniter and the discharge lamp are connected without using an electric wire, the path of the noise current generated at the time of startup is shortened, and the influence of noise can be reduced. Moreover, since the connecting portion is fixed to the lamp body, it is possible to suppress loosening or disconnection of the connection of the discharge lamp due to vibration or impact.

According to the second aspect of the present invention, a recess into which a part of the discharge lamp is inserted is provided in the connection portion, and a spring having a spring force for pushing the discharge lamp out of the recess is provided in the recess. Since the outer peripheral surface of the insertion portion into the recess and the inner peripheral surface of the recess are coupled by engaging the coupling projection and the coupling groove, in the state where the coupling projection and the coupling groove are not meshed. The spring causes the discharge lamp to come out of the recess, and it is possible to confirm that the discharge lamp is securely connected to the connection portion. This makes it possible to prevent the discharge lamp from loosening or falling off due to vibration or shock.

In the structure of claim 3, since the igniter and the ballast are connected through the connector pin and the pin receiver,
Since the igniter and the ballast can be detachably connected, replacement work of the ballast and the igniter at the time of failure becomes easy. Also, if you connect the ballast to the igniter after attaching the igniter to the discharge lamp and attaching it to the lamp body, there will be no starting voltage from the igniter when installing the discharge lamp to the lamp body, so that you do not get an electric shock. You can work safely.

In the structure of claim 4, at least the electrode on the low voltage side of the electrodes of the connecting portion for connecting the discharge lamp is provided on the wiring board on which the components of the high voltage generating portion of the igniter are mounted. The wiring board can be used to form the electrical connection with the discharge lamp, and there is no need to provide a socket or the like for connection with the discharge lamp, which leads to a reduction in the number of parts and a reduction in size. is there.

According to the fifth aspect of the present invention, the electrode on the high voltage side among the electrodes of the connecting portion for connecting the discharge lamp is integrally provided on the high voltage pulse transformer, and is generated on the secondary side of the high voltage pulse transformer. A high-voltage starting voltage can be applied to the discharge lamp without being routed. Moreover, since the discharge lamp is directly connected to the high-voltage pulse transformer, it is not necessary to use a separate socket or the like, which leads to reduction in the number of parts and miniaturization.

In a sixth aspect of the present invention, a plurality of wiring boards each having a metal plate as a base material are joined together to form a cylinder, and the high voltage pulse transformer is housed in the cylinder. Is also used as a case, which leads to a reduction in the number of parts. In the structure of claim 7, at least the high pressure generating portion of the igniter is integrally formed with the connecting tube into which a part of the discharge lamp is inserted, on one surface of the case. Therefore, the discharge lamp can be supported by the case connecting tube.

According to the eighth aspect of the present invention, at least the connecting cylinder into which a part of the discharge lamp is inserted is integrally formed on one surface of the case in which the high-voltage generating unit including the high-voltage pulse transformer in the igniter is installed, and the high-voltage pulse is formed. The bobbin of the transformer is integrally formed with a tubular wall located inside the connecting tube.The high voltage side electrode is provided inside the tubular wall, and the inner peripheral surface of the connecting tube is provided. Since the electrodes on the low voltage side are provided, the case, the high-voltage pulse transformer, and the electrodes form the discharge lamp connecting portion, and it is not necessary to separately provide a connector or the like, which leads to a reduction in the number of parts. is there.

According to a ninth aspect of the present invention, only the high pressure generating portion of the igniter is attached to the rear portion of the lamp body.
While preventing electric shock and the like, the minimum parts are attached to the lamp body, and the object can be achieved without increasing the size of the lamp body. In particular, a commonly used lamp body contains only a halogen lamp and is small in size.However, in a structure that uses a discharge lamp to prevent electric shock, a part of the circuit for lighting the discharge lamp is used. Although it is easy to increase the size because it is installed in the body, it is possible to suppress the increase in size of the lamp by incorporating the minimum number of parts into the lamp.

According to a tenth aspect of the present invention, a tubular portion is provided at the rear portion of the lamp body so as to project, and the tubular portion has a first attaching means to which a member for using the discharge lamp can be attached. Since the support for holding the halogen lamp is provided with the second attaching means that can be attached, when the discharge lamp cannot be used due to an accident or a failure, it can be replaced with a halogen lamp and used. You can be prepared for an emergency.

[0023]

【Example】

(Embodiment 1) In this embodiment, as shown in FIG.
Attach the igniter 2 to the housing 11 of
A socket 31 as a connecting portion for connecting the igniter 2 and the discharge lamp 3 is fitted in a recess 21 provided in the igniter 2.

The lamp body 1 is a housing 1 whose front surface is open.
1 and a lens 12 that covers the front surface of the housing 11, and the discharge lamp 3 and the reflecting mirror 13 are housed in the space surrounded by the housing 11 and the lens 12. here,
The lens 12 may be integrated with the reflecting mirror 13. A high-intensity discharge lamp such as a metal halide lamp is used as the discharge lamp 3, and a light emitting portion 33 is housed in an outer tube 32 having a light transmitting property. Further, a mount 34 that supports an internal connection line connected to the light emitting section 33 is fixed to the rear end portion of the outer tube 32. A part of the mount 34 protrudes like a collar with respect to the outer tube 32, and the mount 34 is mounted in a receiving tube 13a provided at the rear end of the reflecting mirror 13,
The discharge lamp 3 is firmly coupled to the igniter 2 by being sandwiched between the inner peripheral surface of the receiving tube 13a and the igniter 2. The electrical connection drawn out through the mount 34 is connected to the igniter 2 via the socket 31. A protrusion 31a is provided on the rear surface of the socket 31, and at least one electrode 35 for applying a starting voltage to the discharge lamp 3 is exposed on the rear side of the protrusion 31a. That is, this electrode 35 corresponds to the high voltage side of the starting voltage output from the igniter 2.

Specifically, the igniter 2 and the socket 31 are electrically connected in the relationship shown in FIG. That is, the low voltage side electrode 36 connected to the discharge lamp 3 is provided on the peripheral portion of the protrusion 31 a, and the recess 2 of the igniter 2 is provided.
1 is provided with an electrode 23 that is in contact with this electrode 36. In addition, the high voltage side electrode 3 connected to the discharge lamp 3
5 is disposed on the bottom surface of the recess opening on the rear surface of the protrusion 31a, and the electrode 22 protruding from the igniter 2 is inserted into the recess and abuts on the electrode 35. In this way, the igniter 2 and the socket 31 are electrically connected.

A mounting piece 24 is provided on the outer periphery of the igniter 2. A mounting screw 25 is screwed into the housing 11 through the mounting piece 24 so that the igniter 2 is fixed to the housing 11. Has become. Therefore, by mounting the mount 34 of the discharge lamp 3 between the igniter 2 and the reflecting mirror 13 and fixing the igniter 2 to the housing 1,
The discharge lamp 3 is firmly fixed to the lamp body 1. Particularly, since the mount 34 of the discharge lamp 3 is sandwiched between the igniter 2 and the reflecting mirror 13,
Even if vibration or shock is applied, the connection state of the discharge lamp 3 to the igniter 2 is loosened, and the contact state between the igniter 2 and the discharge lamp 3 becomes poor, and the discharge lamp 3 is less likely to fall off the igniter 2. is there. here,
It is desirable that the reflecting mirror 13 be fixed to the housing 11 or the igniter 2 by using well-known means such as concave and convex engagement or screw connection.

Further, the socket 31 is fitted into the recess 21 provided in the igniter 2 as described above, and the igniter 2 and the socket 31 are electrically connected in the recess 21. The application path of the starting voltage from 2 to the discharge lamp 3 is hidden in the recess 21 formed in the igniter 2 and is not exposed to the outside, and the risk of electric shock can be avoided. Here, the electrode 22 to which a high voltage is applied is located at the bottom of the recess 21, and the recess 2
Since 1 faces the inner space of the housing 11, a large creeping distance can be secured between the electrode 22 and a portion of the housing 11 and the igniter 2 that are exposed to the outside, which also results in electric shock due to creeping discharge. Can be prevented. Further, since the starting voltage from the igniter 2 is applied to the discharge lamp 3 without passing through the electric wire, the noise is hardly radiated to the outside and the noise is reduced.

A ballast 4 (see FIG. 3) for stably lighting the discharge lamp 3 and the discharge lamp 3 are connected via an electric wire 5 drawn from the igniter 2. That is,
The electric wire 5 and the socket 31 are connected inside the igniter 2, and the ballast 4 is electrically connected to the discharge lamp 3 via the socket 31. As the ballast 4, a DC power source E such as a battery is boosted by using the DC-DC converter 41, and is then converted into alternating electric power of a relatively low frequency (several hundreds of Hz or less) by using the inverter 42. There is. That is, the inverter 42 supplies alternating electric power to the discharge lamp 3 in order to avoid the acoustic resonance phenomenon of the discharge lamp 3. The operations of the DC-DC converter 41 and the inverter 42 are controlled by the control circuit 43. Since the igniter 2 is connected to the ballast 4, when the switch SW inserted between the DC power supply E and the DC-DC converter 41 is turned on, the starting voltage of a higher voltage than the igniter 2 is discharged lamp. 3, the output of the inverter 42 is supplied to the discharge lamp 3.

A specific configuration of a circuit for lighting the discharge lamp 3 is shown in FIG. In this configuration, as the igniter 2, a type in which a starting voltage is applied to the discharge lamp 3 using a resonance current is used. The smoothing capacitor C ₁ is connected to the DC power source E through a switch SW and a filter circuit 44 for noise prevention, and the DC-DC converter 41 operates using the voltage across the smoothing capacitor C ₁ as a power source. The DC-DC converter 41 is of a boost type. That is, a part of the inductor L ₁ across the smoothing capacitor C ₁ and the switching element S ₁
And the inverter 42 is connected between both ends of the switching element S ₁ through a series circuit of the remaining portion of the inductor L ₁ and the diode D ₁ . Also, the series circuit and the pair of capacitors C ₂₁ of the inverter 42 a pair of switching elements S _21, S _22, C ₂₂
A half-bridge type that uses a bridge circuit configured by connecting in parallel with the series circuit of is used so that the series circuit of the capacitors C ₂₁ and C ₂₂ also serves as the output capacitor of the DC-DC converter 41. , DC-DC converter 41 and inverter 42 are connected. Therefore, by turning on and off the switching element S ₁ by the control circuit 43 provided separately, the back electromotive voltage generated in the OFF period of the switching element S ₁ by the energy stored in the inductor L ₁ on period of the switching element S ₁ but would be output in a form added to the voltage across the smoothing capacitor C _1, it is possible to obtain an output voltage boosted to the input voltage is a voltage across the smoothing capacitor C _1.

In the inverter 42, the secondary winding of the high-voltage pulse transformer T ₁ is connected via the inductor L ₂ between the connection point of both switching elements S ₂₁ and S _{22 and} the connection point of both capacitors C ₂₁ and C _22. And the discharge lamp 3 are connected in series, and the secondary winding of the high-voltage pulse transformer T ₁ and the discharge lamp 3 are connected.
A capacitor C ₃ is connected in parallel to the series circuit of the and. In addition, two capacitors C ₄ and C ₅ are connected in series via an inductor L ₃ between the connection point of both switching elements S ₂₁ and S _{22 and} the connection point of both capacitors C ₂₁ and C _22. A circuit is also connected, and the primary winding of the high-voltage pulse transformer T ₁ is connected in parallel to the capacitor C ₄ whose one end is connected to the connection point of both capacitors C ₂₁ and C ₂₂ . Both switching elements S _21, S ₂₂ are turned on and off alternately by the control circuit 43 provided separately, connected between a connection point of the two switching elements S _21, the connection points and the two capacitors C ₂₁ of S _22, C ₂₂ An alternating current can be supplied to the output side circuit.

By configuring the inverter 42 as described above, both switching elements S ₂₁ ,
By comparing the on / off frequency of S ₂₂ with the frequency of the resonance current flowing in the series resonance circuit of the capacitors C ₄ and C ₅ and the inductor L _3, it is compared with the primary winding of the high voltage pulse transformer T _1. By applying a relatively high voltage and boosting this voltage, a high starting voltage can be applied to the discharge lamp 3. On the other hand, after the discharge lamp 3 is started, the on / off frequencies of the switching elements S ₂₁ , S ₂₂ are shifted from the resonance frequency so that a high voltage is not generated in the secondary winding of the high voltage pulse transformer T ₁ . Alternate power is supplied to the discharge lamp 3 through the inductor L ₂ .

By adopting the above-mentioned circuit as the circuit for lighting the discharge lamp 3, the igniter 2 only needs to use the high-voltage pulse transformer T ₁ and the capacitor C _3, and the number of constituent parts is reduced. That is, the igniter 2 attached to the lamp body 1 can be downsized, and the lamp body 1 can be downsized.
Further, since the igniter 2 is composed of only passive components and the active components are provided in the ballast 4, the igniter 2 is provided in the lamp body 1 where the environment such as temperature and humidity is relatively severe. However, it has a low failure rate and can be used for a long period of time.

In the above structure, the discharge lamp 3 is replaced by the lamp body 1.
When attaching to the igniter 2 first
The mounting piece 24 of the igniter 2 may be fixed to the housing 11 by mounting the mounting piece 24 of the igniter 2. Here, the mounting screw 2 is provided between the mounting piece 24 and the housing 11.
If a packing such as an O-ring is provided so as to surround the periphery of 5, the periphery of the mounting screw 25 can be waterproofed, and a mounting piece can be provided on the outer peripheral surface of the insertion portion of the igniter 2 into the housing 11 over the entire circumference. By forming 24 and providing a packing such as an O-ring so as to surround the igniter 2, the igniter 2 and the housing 11 can be waterproofed.

In the above structure, the igniter 2 is separate from the ballast 4 and is connected by the electric wire 5.
The igniter 2 and the ballast 4 may be integrated. Also,
The igniter 2 is fixed to the housing 11 by using the mounting screw 25.
The fixing means to is not limited to the mounting screw 25, and may be, for example, a configuration in which the igniter 2 is screwed into the housing 11. Further, the DC-DC converter 41 may be a step-up type or an inversion type (step-up / down type).

(Embodiment 2) In this embodiment, as shown in FIG. 5, an electrode (not shown) is exposed on at least the rear surface of a protrusion 31a protruding from the socket 31, and the recess of the igniter 2 is exposed. An electrode spring 26 made of a coil spring is provided in 21 and the electrode spring 26 is elastically contacted with the electrode provided on the protrusion 31a. Also, the socket 31
A coupling projection 37 is provided on the peripheral surface of the igniter, and a coupling groove (not shown) is formed in the igniter 2 so that the socket 31 and the igniter 2 can be bayonet-coupled. That is, the coupling groove is formed in a substantially L shape in which a groove running in the insertion direction of the socket 31 into the igniter 2 and a groove in a direction orthogonal to this groove are continuous, and the coupling projection 37 is inserted into the coupling groove. When the socket 31 is rotated later, the socket 31 and the igniter 2 are connected. Here, a plurality of coupling projections 37 and a plurality of coupling grooves are provided. With this structure, the electrode spring 26 of the igniter 2 makes elastic contact with the electrode of the socket 31.
The electrical contact state between 1 and the igniter 2 is kept in a good state. Further, the coupling projection 37 and the coupling groove are completely engaged with each other so that the socket 31 and the igniter 2
The discharge lamp 3 can be reliably connected to the igniter 2 because the spring force of the electrode spring 26 causes the discharge lamp 3 to fall off unless they are securely connected. It is possible to prevent inconvenience such as loosening and turning off. The other configuration is the first embodiment.
The description is omitted because it is similar to the above.

(Embodiment 3) In this embodiment, as shown in FIG. 6, an example in which the ballast 4 is installed in the internal space of the lamp body 1 is shown. A mounting piece 45 is projectingly provided on a part of the outer peripheral surface of the ballast 4, and a mounting screw 46 is screwed into the housing 11 through the mounting piece 45, and the igniter 2 and the ballast 4 are coupled to each other. The ballast 4 is fixed to the housing 11.

A part of the ballast 4 meshes with a notch 28 formed at the lower end of the igniter 2, and as shown in FIG. 7, the igniter 2 and the ballast 4 are electrically connected at the notch 28. It has become so. That is, the protruding wall 28a is formed at a key portion of the cutout portion 28, and the protruding wall 28a and the cutout portion 2
A connector pin 29 is projected from the igniter 2 in a recess surrounded by the peripheral wall of the igniter 8. At least two connector pins 29 are provided, and the connector pins 29 are separated from each other by a protruding wall 28b provided separately. On the other hand, ballast 4
A pin receiver 47, into which the connector pin 29 is inserted, is formed in the portion that meshes with the cutout portion 28. Therefore, the igniter 2 and the ballast 4 are electrically connected by inserting the connector pin 29 into the pin receiver 47.

When mounting the discharge lamp 3 on the lamp body 1,
First, the discharge lamp 3 is attached to the igniter 2 integrated with the socket 31, and then the igniter 2 and the discharge lamp 3 are incorporated into the lamp body 1. At this time, the ballast 4 is fixed to the lamp body 1, and the igniter 2 and the ballast 4 are connected. Since the igniter 2 is connected to the ballast 4 after the discharge lamp 3 is connected to the igniter 2 as described above, the igniter 2 is connected to the ballast 4 at the time of connecting the discharge lamp 3 to the igniter 2. Therefore, a high-voltage starting voltage is not generated because it is not coupled to the positive electrode, and electric shock due to the starting voltage when the discharge lamp 3 is attached can be reliably prevented. Since other configurations are the same as those in the first embodiment, the description thereof will be omitted.

(Embodiment 4) In this embodiment, as shown in FIG. 8, a ballast 4 is arranged outside the lamp body 1, and the other construction is the same as that of the third embodiment. Has become. In this configuration, since the ballast 4 is arranged outside the lamp body 1, the lamp body 1 can be downsized, and when the housing 11 of the lamp body 1 is formed using a thermoplastic synthetic resin. Since the mold size can be reduced, the manufacturing cost can be reduced. Moreover, since the ballast 4 is arranged outside the lamp body 1, the degree of freedom in designing the lamp body 1 is increased. The stabilizer 4 may be filled with a synthetic resin such as silicone, unsaturated polyester, or urethane for vibration and water resistance.

(Embodiment 5) As shown in FIG. 9, the igniter 2 of this embodiment is constructed so that it can be coupled with the discharge lamp 3 without interposing a socket 31, and a mount 34 for the discharge lamp 3 is provided. Electrode pins 38 are provided on the projections 34, and the projection base 34 is provided so as to surround the electrode pins 38.
The electrode 39 is exposed on the outer peripheral surface of a. Igniter 2 is
As shown in FIG. 10, a pair of wiring boards 51a and 51b made of a printed circuit board on which electronic components are mounted is provided, and a high voltage pulse transformer T ₁ is sandwiched between both wiring boards 51a and 51b, and a high voltage pulse transformer T ₁ and The electrode 22 on the high voltage side is integrally provided, and the electrode 23 on the low voltage side is provided on both wiring boards 51a and 51b. The electrode 22 is formed into a cylindrical shape so that the electrode pin 38 provided in the discharge lamp 3 can be inserted therein, and a cylindrical wall 53 that insulates the electrode 22 from the electrode 23 is formed integrally with the bobbin around the electrode 22. Has been done. On the other hand, the electrodes 23 provided on the wiring boards 51a and 51b are formed by bending a leaf spring so that they are elastically contacted with the electrodes 39 when the electrode pins 38 are inserted into the electrodes 22.

The wiring boards 51a and 51b and the high voltage pulse transformer T ₁ are mounted in the case 50 in a coupled state. The case 50 has a rectangular parallelepiped-shaped case body 50a having an insertion hole 54 into which a rear portion of the mount 34 of the discharge lamp 3 is inserted and which has an opened rear surface.
It is formed by a rear lid 50b that closes the rear surface.
Further, the electric wire 5 to the ballast 4 is pulled out through the rear lid 50b.

In the above construction, the structure in which the discharge lamp 3 is mechanically held and electrically connected is provided in the igniter 2, so that the socket 31 becomes unnecessary, and in comparison with the above-mentioned respective embodiments using the socket 31. The number of parts is reduced, which enables downsizing and weight reduction. Other configurations are similar to those of the first embodiment. (Embodiment 6) In this embodiment, as shown in FIGS. 11 and 12, the case 50 is formed in a cylindrical shape, and a cylindrical one is used as the high voltage pulse transformer T ₁ . Further, the wiring board 51 is one and has flexibility, and the electronic components are surface-mounted. The wiring board 51 is housed in the case 50 in a form wound around the outer peripheral surface of the high-voltage pulse transformer T ₁ . Here, a plurality of terminal portions 52a are arranged side by side in the circumferential direction on the outer peripheral surface of the high voltage pulse transformer T ₁ , and a land 50c corresponding to each terminal portion 52a is formed on the wiring board 51. Therefore, the wiring board 5 is formed on the outer peripheral surface of the high voltage pulse transformer T _1.
The terminal portion 52a and the land 5 are wound by winding 1
0c is in contact with each other and is fixed to each other by soldering or the like. The configuration of this embodiment can be further downsized as compared with the fifth embodiment.

(Embodiment 7) In this embodiment, as shown in FIG. 13, two semi-cylindrical wiring boards 51a and 51b are used, and the wiring boards 51a and 51b are also used as a case. As the wiring boards 51a and 51b, printed boards using a metal plate such as aluminum as a base material are used. In this type of printed circuit board, a conductive pattern is formed on the surface of a base material of a metal plate via an insulating layer. Here, a single-sided board in which a conductive pattern is formed on the inner peripheral sides of the wiring boards 51a and 51b is used. In addition, both wiring boards 51
The a and 51b are joined by a well-known means such as screwing or concave and convex engagement. In the configuration of this embodiment, the wiring board 51a,
Since the case 51b is also used as the case, the case becomes unnecessary. Other configurations are similar to those of the sixth embodiment.

(Embodiment 8) In this embodiment, as shown in FIG. 14, instead of using semi-cylindrical wiring boards 51a and 51b, the wiring boards 51a and 51b have a polygonal cross section. The shape is used. Therefore, the high-voltage pulse transformer T ₁ also has a polygonal column shape. In the configuration of the seventh embodiment, as shown in FIG. 15B, when the electronic components 55 are arranged in the circumferential direction of the wiring boards 51a and 51b, a gap 56 is formed between the wiring boards 51a and 51b and the electronic component 55. However, in the configuration of the present embodiment, as shown in FIG.
6 is not formed, and the degree of freedom in the mounting direction of the electronic component 55 is increased. Other configurations are similar to those of the seventh embodiment.

(Embodiment 9) In this embodiment, as shown in FIG. 16, the wiring boards 51a and 51b are formed so that the connecting cylinders 57 are formed at the connecting portions of the wiring boards 51a and 51b with the discharge lamp 3. It is molded. Here, the wiring boards 51a and 51b are formed so that the portions other than the connecting cylinder 57 have a rectangular cross section. In such a configuration, since the coupling portion with the discharge lamp 3 has a cylindrical shape, the electrode 23 and the electrode 39 can be brought into good contact with each other as compared with the polygonal shape as in the eighth embodiment. The other structure is similar to that of the eighth embodiment, and the description thereof is omitted.

(Embodiment 10) In Embodiment 5, a wiring board 51 is used.
Although a and 51b are arranged substantially parallel to the front-rear direction, in this embodiment, as shown in FIGS. 17 and 18, the two wiring boards 51a and 51b are arranged so as to be substantially orthogonal to the front-rear direction. It is located in. The case 50 has a rectangular parallelepiped case body 50a having an open front surface and a case body 50a.
It is formed by a front lid 50d that covers the front surface of a. The wiring board 51a on the front side is fixed to the front lid 50d with a fixing screw 58.
The rear wiring board 51b is fixed to the rear wall of the case main body 50a by a fixing screw 58. The high-voltage pulse transformer T ₁ is a wiring board 51b on the rear side.
The cylindrical wall 53 projecting on the front surface of the high voltage pulse transformer T ₁ is inserted into the cylindrical connecting cylinder 57 projecting on the rear surface of the front lid 50d. The electrode 22 on the high voltage side is arranged on the inner peripheral surface of the cylindrical wall 53, and the electrode 23 on the low voltage side is arranged on the inner peripheral surface of the connecting cylinder 57. Therefore, when the mount 34 of the discharge lamp 3 having the shape shown in FIG. 9 is inserted into the connecting tube 57, the electrode pin 38 is connected to the terminal 22 and the electrode 39 is in contact with the electrode 23.

By the way, the front surface of the high-voltage pulse transformer T ₁ is formed with an inclined surface 52b which is inclined rearward toward the outer peripheral side, and the connecting cylinder 57 has a rear side at a portion corresponding to the inclined surface 52b, the rear side being more than the front end side. A step portion 57a having a large diameter is formed. A packing 5 such as an O-ring is attached to the step 57a.
9a is mounted and the inclined surface 52 of the high voltage pulse transformer T ₁
By being sandwiched between b and b, the connection cylinder 57 and the high-voltage pulse transformer T ₁ are waterproofed. A flange 50e is formed on the peripheral edge of the opening of the case body 50a, and a holding groove 50f is formed on the entire front surface of the flange 50e. Holding groove 50f
A packing 59b is attached to the casing, and the packing 59b is sandwiched between the case body 50a and the front lid 50d to waterproof the case body 50a and the front lid 50d. Here, the case body 50a
The front lid 50d and the front lid 50d are joined together by fasteners such as screws that are inserted into the four corners of the front surface.

In the structure of this embodiment, since the discharge lamp 3 is directly connected to the high-voltage side output of the high-voltage pulse transformer T ₁ , it is not necessary to draw around the part to which the high voltage is applied.
Electric shock is prevented and there is no power loss. Also,
Igniter 2 and discharge lamp 3 without using a socket
By directly connecting and, the number of parts is reduced. Moreover, as described above, the packing 59
It can be waterproofed by a and 59b. It is desirable to use a waterproof connector or the like at the connecting portion to the ballast 4. Further, it is not always necessary to use two wiring boards 51a and 51b, and one wiring board may be used.
A plurality of 2, 23 may be provided instead of one each. Other configurations are similar to those of the fifth embodiment.

(Embodiment 11) In this embodiment, as shown in FIG. 19, an igniter 2 is provided with an energy storage unit 2a which is a series circuit of a resistor R and a capacitor C, and an energy storage unit 2.
A high-voltage pulse transformer T ₁ that generates a starting voltage by the energy stored in a and a high-voltage generator 2b having a discharge gap G, and only the high-voltage generator 2b is attached to the lamp body 1. The lamp body 1 can be downsized while preventing electric shock. That is, the DC power source E is connected to the ballast 4 through the switch SW and the filter circuit 44. A flyback type converter is used as the DC-DC converter 41 that constitutes the ballast 4, and a series circuit of the switching element S ₃ and the primary winding of the step-up transformer T ₂ is provided across the smoothing capacitor C _1. Is connected and the switching element S ₃ is turned on / off to obtain a boosted output voltage at the secondary winding of the step-up transformer T ₂ . The induced voltage to the secondary winding of the step-up transformer T ₂ is rectified by the diode D ₂ and the voltage across the filter capacitor C ₆ is supplied to the inverter 42. The inverter 42 is used as a full-bridge constituted a bridge circuit by four switching elements S ₂₃ to S _26, connects the input terminal of the bridge circuit across the filter capacitor C _6, a bridge circuit The igniter 2 is connected to the output terminal via an inductor L ₄ . Therefore,
Each of the switching elements _{S 23 ~S 26 (S 23,} S 26 and S _24, S ₂₅ each pair of which are among the diagonal position of the switching element S ₂₃ to S ₂₆ constituting a bridge circuit as is well known Output current flows while the pair) is on at the same time,
By switching the pair of switching elements S ₂₃ to S ₂₆ to be alternately turned on, it is possible to alternate the output current.

The igniter 2 is an energy storage section 2a composed of a series circuit of a resistor R and a capacitor C as described above.
And a high voltage pulse transformer T ₁ and a discharge gap G, and a primary winding of the high voltage pulse transformer T ₁ and a discharge gap G
And a high voltage generator 2b connected in parallel to the capacitor C. Also, the high-voltage pulse transformer T ₁ is 2
Two secondary windings are provided, and the discharge lamp 3 is inserted between both secondary windings so that both secondary windings and the discharge lamp 3 are connected in series. This series circuit is parallel to the energy storage unit 2a. Connected.

Since the output of the inverter 42 is supplied to the energy storage unit 2a, and the output of the inverter 42 is not supplied to the discharge lamp 3 when the discharge lamp 3 is off, the output of the inverter 42 causes the capacitor to be discharged. C is charged. When the terminal voltage of the capacitor C reaches the breakdown voltage of the discharge gap G, a current flows through the primary winding of the high-voltage pulse transformer T _1, the starting voltage in the secondary winding of the high-voltage pulse transformer T ₁ is generated discharge It is applied to the lamp 3. When the discharge lamp 3 starts, the voltage across the capacitor C drops and the discharge gap G
Is no longer discharged, and the discharge lamp 3 is stably lit by the output of the inverter 42.

In the configuration as described above, the starting voltage is generated on the secondary side of the high voltage pulse transformer T _1. Therefore, from the viewpoint of preventing electric shock due to the starting voltage and reducing radiation noise to the outside, the igniter is used. Of the two, only the high pressure generating portion 2b needs to be directly connected to the discharge lamp 3. Therefore, in the present embodiment, as shown in FIGS. 20 and 21, only the high-voltage generator 2b is attached to the lamp body 1. Therefore, the basic configuration of the present embodiment is the same as the first embodiment except that the igniter 2 is replaced with the high-voltage generator 2b. However, in the present embodiment, the fixing strength of the discharge lamp 3 is further enhanced by inserting the rear portion of the mount 34 of the discharge lamp 3 into the recess 21 formed in the high pressure generating portion 2b.

In the structure of this embodiment, only the high pressure generating portion 2b of the igniter 2 is attached to the lamp body 1, and the size of the igniter 2 is reduced as compared with the case where the entire igniter 2 is attached to the lamp body 1. It will be. Moreover, since the discharge gap G is used for the igniter 2 in the above configuration, the breakdown voltage of the discharge gap G may change with time. In this case, the igniter 2 needs to be replaced, but in the configuration of the present embodiment, the high pressure generating part 2b is independent of the other parts, so that the starting performance of the igniter 2 can be maintained only by replacing the high pressure generating part 2b. Therefore, the repair cost can be reduced.

(Embodiment 12) In this embodiment, the discharge lamp 3
In a vehicle headlight that uses a halogen lamp that has been conventionally used, when the igniter 2 or the ballast 4 fails and there is no repair part, or when the discharge lamp 3 is damaged due to an accident. An example is shown that is configured for emergency use. That is, as shown in FIGS. 22 and 23, the lamp body 1 including the housing 11, the lens 12, and the reflecting mirror 13 can be shared by the discharge lamp 3 and the halogen lamp 6.

As shown in FIG. 22, the housing 11 of the lamp body 1 is provided with a cylindrical tubular portion 11a at the rear portion thereof.
Two O-rings 61a and 61b are preliminarily attached to the outer peripheral surface of a, and a plurality of couplings are provided on the base side (left side in FIG. 22) of the tubular portion 11a with respect to the mounting position of the O-rings 61a and 61b. A projection 62 for use is provided in a protruding manner. The igniter 2, which electrically and mechanically couples the discharge lamp 3 via the socket 3, has a receiving groove 63 that opens in a ring shape so that the tubular portion 11a is inserted.
A coupling groove 64 for bayonet coupling with a coupling projection 62 is formed on the outer circumferential wall of the inner and outer circumferential walls of 3. That is, the igniter 2 can be coupled to the lamp body 1 by the well-known bayonet structure, and at this time, the O-rings 61a and 61b come into contact with the peripheral wall of the receiving groove 63 of the igniter 2 and the gap between the lamp body 1 and the igniter 2 is increased. It is designed to be waterproof so that water does not enter the lamp body 1. A recess 13b used when the halogen lamp 6 is used is formed on the outer peripheral surface of the receiving tube 13a of the reflecting mirror 13.

On the other hand, when the halogen lamp 6 is used, as shown in FIG. 23, the support base 6 is provided on the rear surface of the reflecting mirror 13.
5, the support base 65 and the receiving tube 13 of the reflecting mirror 13 are attached.
The halogen lamp 6 is attached to the lamp body 1 by sandwiching the mount 66 of the halogen lamp 6 with a.
On the periphery of the support base 65, hooking claws 65a for engaging the recess 13b provided in the receiving cylinder 13a of the reflecting mirror 13 with the concave and convex portions and connecting the supporting base 65 to the reflecting mirror 13 are provided in a protruding manner. The rear portion of the halogen lamp 6 penetrates the support base 65 and is connected to the socket 67 behind the support base 65. That is, the electric wire 7 from the power supply unit and the halogen lamp 6 can be connected via the socket 67. In this case, in order to waterproof the internal space of the lamp body 1, a rubber cap 68 is attached to the rear surface of the tubular portion 11a. The cap 68 is the tubular portion 11.
a leg portion 68a inserted into a and a head portion 68b that abuts the opening edge of the tubular portion 11a, and the water blocking portion 68c on the peripheral surface of the leg portion 68a repeats unevenness in the insertion direction into the tubular portion 11a. Are formed. Therefore, when the cap 68 is press-fitted into the tubular portion 11a, the water stop portion 68c prevents water from entering the lamp body 1.

In the above embodiment, when the discharge lamp 3 is used, only the igniter 2 is attached to the lamp body 1, but the igniter 2 and the ballast 4 may be integrally attached to the lamp body 1. Good. (Embodiment 13) In this embodiment, as shown in FIG. 24, an engaging claw 11b that engages with the hooking claw 65a of the support base 65 in a concavo-convex manner is formed on the inner peripheral surface of the base of the tubular portion 11a. The other structure is similar to that of the twelfth embodiment.

[0058]

According to the first aspect of the present invention, at least an igniter is integrally provided with a connecting portion for mounting a discharge lamp arranged in a lamp body on a high voltage generating portion for receiving a low voltage and generating a high voltage. , At least the high voltage generating part of the igniter of the ballast and the igniter is attached to the lamp body with this connecting part facing the lamp body, so the discharge lamp is attached to the connecting part provided on the output side of the igniter. In addition, since the portion to which the high-voltage starting voltage is applied is not exposed to the outside of the lamp body, there is an advantage that there is no danger of electric shock in the work of mounting the discharge lamp and the like, and the work can be performed safely. Moreover, since the igniter and the discharge lamp are connected without using an electric wire, the path of the noise current generated at the time of startup is shortened, and the effect of noise can be reduced. Moreover, since the connecting portion is fixed to the lamp body, there is an advantage that it is possible to prevent loosening or disconnection of the connection of the discharge lamp due to vibration or impact.

According to the second aspect of the present invention, a recess into which a part of the discharge lamp is inserted is provided in the connection portion, and a spring having a spring force for pushing the discharge lamp out of the recess is provided in the recess. Since the outer peripheral surface of the insertion portion into the recess and the inner peripheral surface of the recess are coupled by engaging the coupling projection and the coupling groove, in the state where the coupling projection and the coupling groove are not meshed. , The discharge lamp will come out of the recess by the spring, and you can confirm that the discharge lamp is securely connected to the connection part, and as a result, prevent the discharge lamp from loosening or falling off due to vibration or shock. There is an advantage that you can.

According to the third aspect of the invention, since the igniter and the ballast are connected via the connector pin and the pin receiver, the igniter and the ballast can be detachably connected,
This has the advantage of facilitating the replacement work of the ballast and igniter in case of failure. Also, if you connect the ballast to the igniter after attaching the igniter to the discharge lamp and attaching it to the lamp body, there will be no starting voltage from the igniter when installing the discharge lamp to the lamp body, so that you do not get an electric shock. The effect is that you can work safely.

According to a fourth aspect of the invention, at least the wiring board on which the components of the high voltage generating portion of the igniter are mounted,
Since the electrode on the low voltage side is provided among the electrodes of the connecting portion for connecting the discharge lamp, it is possible to form the electrical connecting portion with the discharge lamp using the wiring board, and for connecting with the discharge lamp. Since there is no need to provide a socket or the like, there is an advantage that the number of parts can be reduced and the size can be reduced.

According to the fifth aspect of the present invention, the electrode on the high voltage side of the electrodes of the connecting portion for connecting the discharge lamp is provided integrally with the high voltage pulse transformer. Therefore, the high voltage generated on the secondary side of the high voltage pulse transformer is high. Can be applied to the discharge lamp without having to circulate the starting voltage. Moreover, since the discharge lamp is directly connected to the high-voltage pulse transformer, there is no need to use a socket or the like, which leads to a reduction in the number of parts and a reduction in size.

According to the sixth aspect of the present invention, since a plurality of wiring boards each having a metal plate as a base material are combined to form a cylinder and the high voltage pulse transformer is housed in the cylinder, the wiring board is a case. It also has the effect of reducing the number of parts. According to the invention of claim 7, since the connecting cylinder into which a part of the discharge lamp is inserted is integrally formed on one surface of the case in which at least the high pressure generating portion of the igniter is installed, a socket or the like is held for holding the discharge lamp. There is an advantage that the discharge lamp can be supported by the connecting tube of the case without the need to use it.

According to an eighth aspect of the present invention, a connecting cylinder into which a part of a discharge lamp is inserted is integrally formed on one surface of a case in which a high voltage generating unit including a high voltage pulse transformer in at least an igniter is installed, and a high voltage pulse is formed. A tubular wall located inside the connecting cylinder is integrally projectingly provided on the bobbin of the transformer, an electrode on the high voltage side is provided inside the cylindrical wall, and an electrode on the low voltage side is provided on the inner peripheral surface of the connecting cylinder. Since the discharge lamp is provided, the case, the high-voltage pulse transformer, and the electrode form a connecting portion of the discharge lamp, and it is not necessary to separately provide a connector or the like, which has an advantage of reducing the number of parts.

According to the ninth aspect of the present invention, since only the high pressure generating portion of the igniter is attached to the rear portion of the lamp body, it is possible to attach the minimum number of parts to the lamp body while preventing electric shock. Therefore, there is an advantage that the object can be achieved without increasing the size of the lamp body. In particular, a commonly used lamp body contains only a halogen lamp and is small in size.However, in a structure that uses a discharge lamp to prevent electric shock, a part of the circuit for lighting the discharge lamp is used. Although it is easy to increase the size because it is housed in the body, it has an advantage that it is possible to suppress the increase in size of the lamp body by incorporating the minimum number of parts into the lamp body.

According to a tenth aspect of the present invention, a tubular portion is provided on the rear portion of the lamp body so as to project, and the tubular portion has a first attaching means to which a member for using the discharge lamp can be attached. Since the support for holding the halogen lamp is provided with the second attaching means that can be attached, when the discharge lamp cannot be used due to an accident or a failure, it can be replaced with a halogen lamp and used. The effect is that you can be prepared for an emergency.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment.

FIG. 2 is a cross-sectional view of a main part showing the first embodiment.

FIG. 3 is a block diagram showing a lighting circuit used in the first embodiment.

FIG. 4 is a circuit diagram showing a lighting circuit used in the first embodiment.

FIG. 5 is a cross-sectional view showing a second embodiment.

FIG. 6 is a cross-sectional view showing a third embodiment.

FIG. 7 is a cross-sectional view of essential parts showing a third embodiment.

FIG. 8 is a cross-sectional view showing a fourth embodiment.

FIG. 9 is a cross-sectional view of an essential part showing a fifth embodiment.

FIG. 10 is an exploded perspective view of essential parts showing a fifth embodiment.

FIG. 11 is a cross-sectional view of essential parts showing a sixth embodiment.

FIG. 12 is an exploded perspective view of essential parts showing a sixth embodiment.

FIG. 13 is an exploded perspective view of essential parts showing a seventh embodiment.

FIG. 14 is an exploded perspective view of essential parts showing an eighth embodiment.

FIG. 15 is a cross-sectional view comparing Example 7 and Example 8.

FIG. 16 is an exploded perspective view of the essential parts of the ninth embodiment.

FIG. 17 is a cross-sectional view of essential parts showing Example 10;

FIG. 18 is an exploded perspective view showing a part of a main part of a tenth embodiment of the present invention.

FIG. 19 is a circuit diagram showing an eleventh embodiment.

FIG. 20 is a vertical sectional view showing an eleventh embodiment.

FIG. 21 is a horizontal sectional view showing an eleventh embodiment.

FIG. 22 is a sectional view showing a state in which a discharge lamp is used in Example 12.

FIG. 23 is a sectional view showing a state in which a halogen lamp is used in Example 12.

FIG. 24 is a partially cutaway sectional view showing Example 13;

FIG. 25 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lamp 2 Igniter 2b High voltage generating part 3 Discharge lamp 4 Ballast 11a Cylindrical part 11b Engaging claw 13 Reflecting mirror 13b Recess 21 Recess 22 Electrode 23 Electrode 26 Electrode spring 29 Connector pin 31 Socket 35 Electrode 37 Coupling protrusion 39 electrode 44 pin receiving 50 case 51 wiring board 51a wiring board 51b wiring board 53 cylindrical wall 57 coupling tube 62 coupling projections 64 coupling groove 65 support table 65a latching pawls T ₁ high-voltage pulse transformer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shino Kato 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works Co., Ltd. (72) Toshiro Nakamura, 1048, Kadoma, Kadoma, Osaka Prefecture (72) Inventor Hideki Hamada 1048, Kadoma, Kadoma-shi, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (10)

[Claims] 1. A lamp body having a built-in reflector, a discharge lamp arranged together with the reflector in the lamp body, a ballast for stably lighting the discharge lamp, and a high-voltage starting voltage discharged when the discharge lamp is started. In a vehicle headlamp device including an igniter for applying to a lamp, a high voltage generating part of the igniter that receives a low voltage and generates a high voltage is integrally provided with a connecting part for mounting a discharge lamp, and is stable. A vehicular headlamp device, characterized in that at least a high-voltage generating part of the igniter is attached to the lamp body so that the connecting portion faces the lamp body. 2. The connection part has a recess into which a part of the discharge lamp is inserted, and a spring having a spring force for pushing the discharge lamp out of the recess is provided in the recess, and the recess in the discharge lamp is provided. A plurality of coupling projections are provided on one of the outer peripheral surface of the insertion portion and the inner peripheral surface of the recess, and the other is formed with a coupling groove that engages with the coupling projection to prevent the discharge lamp from coming off. The vehicle headlight device according to claim 1, wherein the headlight device is a vehicle headlight device. 3. The igniter and the ballast are separate bodies,
While the igniter is provided with the above-mentioned connecting portion, one of the igniter and the ballast is provided with a connector pin protruding therefrom and the other is formed with a pin receiver for receiving the connector pin, and the igniter and the ballast are provided through the connector pin and the pin receiver. The vehicle headlight device according to claim 1 or 2, characterized in that and are electrically connected to each other. 4. The igniter is provided with a high voltage pulse transformer for generating a high voltage on the secondary side and at least a wiring board on which components of a high voltage generating part of the igniter are mounted, and an electrode of a connecting part for connecting a discharge lamp. The vehicle headlamp device according to claim 1, wherein a low-voltage side electrode is provided on the wiring board. 5. The vehicle headlight device according to claim 4, wherein the electrode on the high voltage side among the electrodes of the connection portion for connecting the discharge lamp is integrally provided with the high voltage pulse transformer. 6. A plurality of wiring boards having a metal plate as a base material are provided, and the wiring boards are formed in a cylindrical shape surrounding the high voltage pulse transformer when they are coupled to each other. The vehicle headlight device according to claim 4 or claim 5. 7. A case including at least a high pressure generating part of an igniter, wherein a connecting tube into which a part of a discharge lamp is inserted is integrally formed on one surface of the case. The vehicle headlight device according to 1. 8. A high-voltage pulse transformer is provided in at least an igniter, and a high-voltage generator is provided in the case. A connecting tube into which a part of a discharge lamp is inserted is integrally formed on one surface of the case. The transformer bobbin is integrally provided with a cylindrical wall located inside the connecting cylinder, and the high-voltage side electrode of the igniter electrode connected to the discharge lamp is provided inside the cylindrical wall. The low-voltage side electrode of the igniter electrode connected to the discharge lamp is provided on the inner peripheral surface of the cylinder.
The vehicle headlight device described above. 9. The vehicle headlamp device according to claim 1, wherein only the high pressure generating portion of the igniter is attached to the rear portion of the lamp body. 10. A first attaching means for projecting a cylindrical portion having a rear surface opened at a rear portion of the lamp body, wherein at least a high pressure generating portion of an igniter is detachably attached to the cylindrical portion. Is provided
2. A vehicle according to claim 1, wherein the lamp body is provided with a second mounting means for removably mounting a supporting base for holding the halogen lamp in contact with the rear surface of the reflecting mirror. Headlight device.