JP4577010B2 - Discharge lamp starting device, discharge lamp lighting device using the same, vehicle headlamp device, vehicle - Google Patents

Description

  The present invention relates to a discharge lamp starting device for starting / restarting a high-intensity discharge lamp such as a mercury lamp or a metal halide lamp, a discharge lamp lighting device using the same, a vehicle headlamp device, and a vehicle. .

  Conventionally, a discharge lamp lighting device for lighting a high-intensity discharge lamp (hereinafter referred to as an HID lamp) such as a mercury lamp or a metal halide lamp has been provided. In this discharge lamp lighting device, the HID lamp is instantly started and restarted. For this purpose, a device called a discharge lamp starting device (igniter) for generating a high voltage pulse is used.

  As shown in FIG. 8, in such a discharge lamp starting device 100, a connector 101 electrically connected to an output terminal of an inverter of a discharge lamp lighting device and a base 103 of an HID lamp DL are electrically and mechanically connected. The discharge lamp starting device 100 uses a pulse transformer to convert a low voltage pulse into a high voltage pulse.

  As shown in FIGS. 9 and 10, the above-described pulse transformer includes a cylindrical ferrite core 200, a secondary winding 201 wound around the ferrite core 200, and electric terminals at both ends of the secondary winding 201. High-voltage side terminal 202 and low-voltage side terminal 203, and the ferrite core 200, secondary winding 201, and both terminals 202, 203 are inserted and an insulating resin molded article formed with a socket base 204a And a coil bobbin 205 on which the primary winding 206 is wound and mounted on the body 204. The low voltage pulse applied to the primary winding 206 is converted into a high voltage pulse to obtain a secondary voltage. This is output from the winding 201.

On the other hand, as shown in FIG. 11, the above-described pulse transformer is provided with a core holder 300, and the core holder 300 is a pair that holds both ends of the ferrite core 200 in the axial direction. End caps 301 and 301, and a connecting portion 302 that extends from one end cap 301 to the other end cap 301 in parallel to the axial direction of the ferrite core 201 and connects the two. (Patent Document 1).
JP 2003-108737 A (FIGS. 1, 9, 10, and 18)

  By using the core holder 300 described above, the position of the ferrite core 200 can be easily fixed when the body 204 is insert-molded. However, the ferrite core in which the secondary winding 201 is wound around the core holder 300 is used. When 200 is attached, the gap between the secondary winding 201 and the connecting portion 302 of the core holder 300 becomes very narrow, about 0.2 mm or less. Resin does not flow between the connecting portion 302 and the connecting portion 302, and a hollow portion may be formed between the connecting portion 302 and the secondary winding 201 from one end side to the other end side of the secondary winding 201. When using a pulse transformer with the occurrence of, there were the following problems.

  That is, in general, when a pulse transformer is used, a potential difference between both ends of the secondary winding 201 is increased by generating a high voltage pulse in the secondary winding 201 (for example, a potential difference close to 30 kV is generated). At this time, if a hollow portion is formed from one end side to the other end side of the secondary winding 201 as described above, this hollow portion becomes a discharge path between both ends of the secondary winding 201. It ends up. In addition, when such a discharge occurs, it becomes impossible to generate a predetermined voltage as a discharge lamp starting device, or the discharge frequently occurs, thereby destroying the surrounding resin and the insulation coating of the secondary winding 201. As a result, there is a problem in that an insulation failure is caused, resulting in a malfunction.

  The present invention has been made in view of the above-described points, and its object is to provide a discharge lamp starting device capable of suppressing discharge between both ends of a secondary winding, a discharge lamp lighting device using the same, and a vehicle headlamp. It is to provide a lamp device and a vehicle.

In order to solve the above-described problems, in the discharge lamp starting device according to claim 1, a pulse transformer in which a primary winding and a secondary winding are wound around a rod-shaped core, and both end portions in the axial direction of the core It includes a pair of holding portions for holding, respectively, a connecting portion for connecting the curved two holding portions along the circumferential surface of the core, a pair of opposite ends of the secondary windings are connected to the terminal portion of the Each holding part is formed in a U shape with a base part connected to the connecting part and a pair of holding claws protruding in the same direction from both ends of the base part. One holding part is connected to the connecting part on one end side of the base part, and the other holding part is connected to the connecting part on the other end side of the base part so that the connecting part to the connecting part does not face in the axial direction of the core. When both are connected and viewed from the direction of insertion of the core into both holding parts, As a Z-shape and forming part respectively a gap is provided between the connecting portion and each of the holding portions, characterized in that the terminal portions are arranged in corresponding clearance respectively.

  According to the invention of claim 1, the shortest path along the connecting portion between the holding portions is configured so as not to oppose the portion where the connecting portions of the holding portions of the core holder are connected in the axial direction of the core. The path intersects the axis of the core, and is longer than that conventionally provided in which the connecting portion extends parallel to the axial direction of the core. As a result, the insulation distance between both ends of the secondary winding becomes longer than that of the conventional one, and it is assumed that there is a hollow portion that leads from one end side to the other end side of the secondary winding between the connecting portion and the secondary winding. Even if this occurs, discharge between both ends of the secondary winding is suppressed, and the withstand voltage can be improved. In addition, when each end of the winding start and end of the secondary winding is led out to the same side, in the conventional core holder, since the connecting portion is parallel to the core, the secondary winding Since it interferes with both ends of the wire, it cannot be attached from the side where the end of the secondary winding is led out, so that the installation work becomes complicated and this makes it difficult to assemble. However, according to the first aspect of the present invention, as described above, the portion where the connecting portions of the two holding portions of the core holder are connected is not opposed in the axial direction of the core. A gap is formed between each of the holding portions and, therefore, even if both ends of the secondary winding start and end are led out to the same side, both ends of the secondary winding are in the gaps described above. Each through the core hole Can make the mounting of the over, thereby easily performing the assembly as compared with the conventional, can mitigate this in assembly labor as a result, it is possible to reduce the number of assembling steps.

  According to a second aspect of the present invention, the discharge lamp lighting device includes the discharge lamp starting device according to the first aspect.

  According to invention of Claim 2, the discharge lamp lighting device provided with the discharge lamp starting device with improved withstand voltage can be obtained.

  According to a third aspect of the present invention, there is provided a vehicle headlamp device including the discharge lamp lighting device according to the second aspect and a discharge lamp that is turned on by the discharge lamp lighting device.

  According to invention of Claim 3, the vehicle headlamp apparatus provided with the discharge lamp starter with improved withstand voltage can be obtained.

  According to a fourth aspect of the present invention, the vehicle headlamp device according to the third aspect is provided.

  According to invention of Claim 4, the vehicle provided with the discharge lamp starter with improved withstand voltage can be obtained.

  According to the present invention, since the creeping distance of the connecting portion between the two holding portions is long, the insulation distance between both ends of the secondary winding becomes long, thereby suppressing discharge between both ends of the secondary winding. In addition, there is an effect that assembly can be easily performed.

  An embodiment of the present invention will be described below with reference to FIGS.

  The discharge lamp starting device 1 (see FIG. 6B) of the present embodiment includes a secondary winding block 3 and a core holder 4 formed by winding a secondary winding N2 around a core 2 as shown in FIG. 4, a body 12 having the core block 11 inserted and a winding body 12 a and a socket base 12 b as shown in FIG. 4, and a primary winding N <b> 1 wound around the core 2 via the body 12. 5 and a circuit board 17 for generating a low voltage pulse as shown in FIG. 5, and a circuit block 18 composed of the pulse transformer PT and the circuit board 17 includes an insulating case 21 and a shield. It is housed and configured in a case 25 (see FIG. 6B).

  As shown in FIG. 4, the secondary winding block 3 is a thin foil-shaped rectangular conductor, for example, on a rod-shaped core (magnetic core) 2 having a circular cross section using ferrite having a specific resistance of 1000 Ωm or more. The secondary winding N2 is formed by winding it in an edgewise manner (a method of winding a flat conducting wire in the width direction).

  As shown in FIGS. 2A and 2B, the core holder 4 includes a holder main body 5 made of an insulating resin, and one end of the secondary winding N2 inserted into the holder main body 5 (the left end in FIG. 1). A high-voltage side terminal 9 electrically connected to the main body), and a low-voltage side terminal 10 press-fitted into the holder body 5 and electrically connected to the other end (right end in FIG. 1) of the secondary winding N2. It consists of

  The holder body 5 includes a pair of holding portions 6 and 7 that respectively hold both end portions of the core 2 in the axial direction, and a connecting portion 8 that integrally connects the holding portions 6 and 7 and is formed of an insulating resin. Has been. One holding portion 6 includes a substantially rectangular parallelepiped base portion 6b and a pair of holding claws 6a and 6a projecting from both ends in the longitudinal direction (vertical direction) of the base portion 6b. The portion protrudes in a direction close to each other, and the end portion of the core 2 is sandwiched and held by the pair of holding claws 6a and 6a. The other holding part 7 is provided with a pair of holding claws 7a, 7a and a base part 7b having substantially the same shape as the holding part 6. The base part 7b is press-fitted for press-fitting the low-voltage side terminal 10. A groove 7c is formed. The connecting portion 8 integrally connects the holding portions 6 and 7, and as shown in FIG. 2B, the upper end portion (connecting portion P <b> 1) of the right side surface of the holding portion 6 and the left side surface of the holding portion 7. The connecting portions P1 and P2 in which both the holding portions 6 and 7 are connected to each other at the lower end portion (the connecting portion P2) of the two and the connecting portions 8 of the both holding portions 6 and 7 are connected are axial directions of the core 2 (FIG. 2). In the left and right direction in (b), they do not oppose each other (when viewed from the side, they are substantially Z-shaped as shown by a dashed line in FIG. 2B). In addition, a flat pedestal portion 8 a is integrally projected on the left end side of the connecting portion 8.

  The high-voltage side terminal 9 is formed, for example, by bending a conductive metal plate, and includes an electrode terminal portion 9a that constitutes the inner electrode E1 (see FIG. 4) together with the inner electrode terminal 15 on the upper end side. A caulking portion 9b is provided on one side of the secondary winding N2 to be electrically connected by caulking and fixing one end portion (left end portion) thereof.

  The low-voltage terminal 10 is formed, for example, by bending a conductive metal plate, and includes a circuit terminal portion 10a electrically connected to the circuit block 18 on the upper end side, and holds the holder body 5 on the lower end side. A press-fitting piece 10b that is press-fitted into the press-fitting groove 7c of the portion 7 is provided, and the other end (right end) of the secondary winding N2 is caulked and fixed to the side of the press-fitting piece 10b. A caulking portion 10c is projected.

  The core holder 4 is formed by inserting the high-voltage side terminal 9 into the holder body 5 and press-fitting the low-voltage side terminal 10. At this time, the high-voltage side terminal 9 includes the electrode terminal portion 9 a as the base of the holder body 5. It protrudes upward from the upper surface of the portion 8a and is inserted into the holder body 5 by protruding from the left side surface of the connecting portion 8 so that the caulking portion 9b is positioned in the vicinity of the base portion 6b. Is press-fitted into the press-fitting groove 7 c of the holding portion 7.

  As shown in FIG. 4, the core block 11 is obtained by attaching the secondary winding block 3 to the core holder 4 described above, and the axial ends of the core 2 are respectively connected to the pair of holding portions 6 and 7. The holding claws 6a, 6a, 7a, and 7a are sandwiched from above and below, and both ends of the secondary winding N2 are caulked and fixed to the caulking portions 9b and 10c of the terminals 9 and 10, respectively, and electrically connected. The secondary winding block 3 is attached to the core holder 4.

  The body 12 includes the core block 11 integrally and is insert-molded using an insulating resin. The body 12a around which the primary winding N1 is wound and a socket formed on the left end side of the body 12a. And a base 12b. A circuit terminal portion 10a of the low-voltage side terminal 10 protrudes from the right end side of the upper surface portion of the winding drum portion 12a, and a base portion from which the electrode terminal portion 9a of the high-voltage side terminal 9 protrudes from the upper surface portion of the socket base portion 12b. 8a is exposed. A cylindrical inner wall portion 13 surrounding the pedestal portion 8a and the electrode terminal portion 9a and a cylindrical outer wall portion 14 surrounding the inner wall portion 13 are integrally projected on the upper surface portion of the socket base portion 12b. A pair of recesses 14 a and 14 a are formed on the outer peripheral surface of the outer wall portion 14.

  A primary winding N1, an inner electrode terminal 15, and a pair of outer electrode terminals 16 and 16 are attached to the body 12 as follows to constitute a pulse transformer PT. The primary winding N <b> 1 is wound along the outer peripheral surface of the winding body portion 12 a of the body 12, and thus is indirectly wound around the core 2. The inner electrode terminal 15 is integrally provided with a substantially rectangular bottom plate portion 15a and three terminal portions 15b, 15b, 15b extending upward from three sides of the four sides of the bottom plate portion 15a. It is bent from a conductive metal plate or the like. The inner electrode terminal 15 is mounted in the inner wall portion 13 of the socket base 12b. At this time, a high-voltage side terminal is provided on the remaining one side of the bottom plate portion 15a of the inner electrode terminal 15 where the terminal portion 15b is not projected. Nine electrode terminal portions 9a are positioned, and the terminal portions 15b, 15b, 15b and the electrode terminal portion 9a constitute the inner electrode E1. The outer electrode terminal 16 includes a horizontally long and long flat plate portion 16b, a pair of electrode terminal portions 16a and 16a extending upward from both ends on the upper end side of the flat plate portion 16b, and a flat plate portion 16b. A circuit terminal portion 16c extending from the lower end to the side is integrally provided, and is bent from a conductive metal plate or the like. The outer electrode terminal 16 is fixed to the body 12 by fitting the flat plate portion 16b into the recess 14a formed in the outer wall portion 14 of the socket base portion 12b, thereby constituting the outer electrode E2. Thus, the socket 20 is formed by comprising the inner electrode E1 and the outer electrode E2 in the socket base 12b.

  Thus, the pulse transformer PT is formed. As shown in FIG. 5, the pulse transformer PT includes a circuit terminal portion 10a of the low-voltage side terminal 10, both end portions of the primary winding N1, and a pair of outer electrode terminals. The 16 circuit terminal portions 16c are electrically connected to the circuit board 17 on which electronic components are mounted, whereby the circuit block 18 of the discharge lamp starting device 1 is configured.

  The circuit board 17 has a printed wiring board 17b on which a wiring pattern 17a is formed, a capacitor C for generating pulses (see FIG. 6A), and a switching element (discharge gap) SG for generating pulses (FIG. 6A). The circuit configuration of the circuit block 18 formed by mounting the pulse transformer PT on the circuit board 17 is, for example, as shown in FIG. 6 (a). The circuit configuration will be described below.

  As shown in FIG. 6A, the circuit configuration of the circuit block 18 includes a high-voltage side input terminal T1 and a low-voltage side input terminal T1 constituting an input terminal portion (connector) 19 electrically connected to an output terminal of the inverter. Input terminals T2 and T3, electrodes E1 and E2 of the socket 20, a pulse generating capacitor C connected between the input terminals T1 and T3, a primary winding N1 connected in parallel to the capacitor C, and A pulse transformer PT having a secondary winding N2 interposed between the input terminal T1 and the inner electrode E1 by electrically connecting the circuit terminal portion 10a to the input terminal T1, and a capacitor C to 1 A switch element (discharge gap) SG for generating a high voltage pulse for opening and closing a discharge path to the next winding N1 is provided, and the input terminal T2 and the outer electrode E2 are directly connected. The circuit configuration of the circuit block 18 is not limited to that described above. For example, a bypass capacitor may be interposed between the terminals T1 and T2 to form a bypass loop when a pulse is generated. In order to stably turn on the HID lamp, a connection harness connected to the ballast may be provided.

  The circuit block 18 configured as described above is housed in an insulating case 21 for insulation and a shield case 25 for suppressing noise, whereby the discharge lamp starting device 1 as shown in FIG. 6B is completed. It will be.

  As shown in FIG. 5, the insulating case 21 includes a lower insulating case 22 formed in a box shape whose upper surface is opened from an insulating resin, and a box shape whose lower surface is opened from an insulating resin. The upper insulating case 23 is attached to the insulating case 21. A circular hole 23a is formed on the upper surface portion on the left end side of the upper insulating case 23 so that the socket base 12b faces the outside, and a peripheral wall 23b surrounding the hole 23a is integrally formed on the periphery of the hole 23a. Projected to Further, a connector hole (not shown) is formed on the right side surface of the upper insulating case 23 so that a harness or the like connected to the inverter is inserted into the insulating case 21 and electrically connected to the circuit block 18. ing. A substantially U-shaped upper connector portion 24 whose lower surface and left and right side surfaces are open toward the right is integrally projected on the peripheral edge portion of the connector hole portion. A locking groove 24a is formed on the left side, and a fitting groove 24b is formed on the right side. When the circuit block 18 is housed in the insulating case 21, the insulating case 21 is filled with silicon, insulating resin, or the like in order to improve insulation.

  As shown in FIG. 5, the shield case 25 includes a lower shield case 26 and an upper shield case 28 that are both metal products. The lower shield case 26 is formed in a box shape with an open upper surface, and a flat lower connector portion 27 is formed on the right side of the lower shield case 26 corresponding to the upper connector portion 24 toward the right. Are projecting together. On both side edges of the lower connector portion 27, a piece portion 27b provided with a locked portion 27a locked to the locking groove 24a on the left side is integrally projected, and the above-mentioned fitting is set on the right side. Long fixed pieces 27c, 27c having a width dimension comparable to that of the joint groove 24b are integrally projected. The upper shield case 28 is formed in a box shape with an open lower surface, and a circular opening 28a for projecting the peripheral wall portion 23b of the upper insulating cover 23 outward is formed on the upper surface portion. A cylindrical portion 28b is integrally projected from the peripheral portion of 28a so as to follow the outer surface of the peripheral wall portion 23b. In addition, a connector shield cover 28c is integrally provided on the right side surface of the upper shield case 28 so as to cover the upper surface portion of the upper connector portion 24 and both side surfaces where the locking grooves 24a are formed.

  Here, the circuit block 18 is accommodated in the insulating case 21 and the shield case 25 as follows. First, the circuit block 18 is disposed in the lower insulating case 22 with the socket 20 facing upward, and thereafter, the upper insulating case 23 is placed on the lower insulating case 22 so that the socket 20 faces the outside through the hole 23a. The insulating case 21 is filled with an insulating resin. As a result, the circuit block 18 is housed in the insulating case 21, and then the insulating case 21 is disposed in the lower shield case 26, and the lower locking grooves 24 a and 24 a of the upper connector portion 24 of the insulating case 21 are placed in the lower case. The locked portions 27b and 27b of the lower connector portion 27 of the side shield case 26 are locked. After the upper shield case 28 is attached to the lower shield case 26 so that the peripheral wall 23b protrudes from the opening 28a and the socket 20 faces outward, the pair of fixing pieces 27c and 27c are Bending the connector portions 24 along the respective fitting grooves 24b to advance the tip portions of the fixing pieces 27c and 27c to the upper surface side of the upper connector portion 24, and bending the tip portions in directions close to each other to The shield case 25 is fixed by fixing the portion 24 to the lower connector portion 27 together with the connector shield cover 28 c of the upper shield case 28. At this time, the fixing pieces 27c and 27c shield the portion where the fitting grooves 24b and 24b of the upper connector portion 24 are formed, and at the same time, the opening of the shield case 25 can be prevented.

  Thus, the circuit block 18 is housed in the insulating case 21 and the shield case 25, and the discharge lamp starting device 1 shown in FIG. 6B is completed. Next, the operation of the discharge lamp starting device 1 will be described. First, when the output from the inverter is input to the input terminals T1 to T3 of the discharge lamp starting device 1, the capacitor C is charged by the potential difference between the input terminals T1 and T3, and eventually the voltage across the capacitor C exceeds a predetermined value. Then, the switch element SG is turned on and a pulse is applied to the primary winding N1. The pulse transformer PT converts the pulse applied to the primary winding N1 into a high voltage pulse and outputs it from the secondary winding N2, thereby starting and restarting the HID lamp DL.

  The discharge lamp starting device 1 of the present embodiment is configured as described above. According to the discharge lamp starting device 1, the connecting portions 8 of the two holding portions 6 and 7 of the core holder 4 are connected as shown in FIG. Since the connected portions P1 and P2 are not opposed to each other in the axial direction of the core 2, the shortest path along the connecting portion 8 between the holding portions 6 and 7 intersects the axis of the core 2 ( (Path indicated by D in FIG. 3A). That is, in the core holder 4 of the discharge lamp starting device 1 of the present embodiment, the shortest path along the connecting portion 8 between the holding portions 6 and 7 is such that the connecting portion 302 is in the axial direction of the core 201 as shown in FIG. The shortest path of the conventional core holder 300 that extends in parallel (that is, the connecting portion where the connecting portions 302 of both end caps (holding portions) 301 and 301 are connected faces each other in the axial direction of the core 200). It is longer than (path along the axis of the core 200 indicated by d in FIG. 11). Therefore, even if a hollow portion is formed between one end side of the secondary winding N2 and the other end side between the connecting portion 8 and the secondary winding N2, the insulation distance between both ends of the secondary winding N2 is Since it is longer than the conventional one, the discharge between both ends of the secondary winding N2 is suppressed, and the withstand voltage can be improved. Further, if the surface of the connecting portion 8 facing the secondary winding N2 is curved along the secondary winding N2, the path D can be further lengthened as shown in FIG. Further improvement in voltage characteristics can be achieved.

  By the way, as shown in FIG. 4, when each end of the winding start and the winding end of the secondary winding N2 is led out to the same side, in the conventional core holder 300 shown in FIG. Since it interferes with both ends of the next winding N2, it cannot be attached from the direction indicated by the arrow A in FIG. 4, and the attaching operation becomes complicated, and as a result, the assembly cannot be performed easily. However, according to the core holder 4 of the discharge lamp starting device 1 of the present embodiment, as shown in FIG. 1, the connection portions P1 and P2 to which the connection portions 8 of the both holding portions 6 and 7 of the core holder 4 are connected are provided. Since they do not oppose each other in the axial direction of the core 2, gaps (indicated by S1 and S2 in FIG. 1) are formed between the connecting portion 8 and the holding portions 6 and 7, respectively. Even from the direction indicated by the arrow A, attachment can be performed by inserting both end portions of the secondary winding N2 into the gap. Therefore, as compared with the conventional core holder 300, the assembly can be performed easily, and as a result, the time and effort required for the assembly can be reduced, and the number of assembly steps can be reduced.

  The discharge lamp starting device 1 of the present embodiment described above is used to instantly start / restart the HID lamp in a discharge lamp lighting device for lighting a HID lamp such as a mercury lamp or a metal halide lamp. The discharge lamp lighting device provided with the discharge lamp starting device 1 of the present embodiment can be used for a vehicle headlamp device 29 as shown in FIG. 7A, for example.

  The vehicle headlamp device 29 is used in a vehicle 40 as shown in FIG. 7 (b). As shown in FIG. 7 (a), a box-shaped lamp body 30, an HID lamp DL, and a concave surface are used. A reflecting plate 32 having a reflecting surface and reflecting light from the HID lamp DL, a discharge lamp starting device 1 to which the HID lamp DL is electrically and mechanically connected, a 12V battery (not shown) of the vehicle 40, and the like And a discharge lamp lighting device including an inverter 33 that converts a DC voltage supplied from the AC voltage into an AC voltage.

  The lamp body 30 is formed in a box shape having an open front surface (left surface in FIG. 7A), and a lens 31 is mounted so as to cover the open front surface. In addition, a lamp insertion hole 30a for inserting the HID lamp into the lamp body 30 is formed on the rear wall of the lamp body 30, and a part of the discharge lamp starting device 1 is provided at the periphery of the lamp insertion hole 30a. A lamp replacement cap 34 that is provided with a recessed portion 34a for housing and closes the lamp insertion hole 30a is detachably attached. In addition, a power supply line insertion hole 30 b for introducing a power supply line such as a harness L <b> 2 having one end connected to the inverter 33 into the lamp body 30 is formed on the lower wall of the lamp body 30. Further, in the vicinity of the lamp insertion hole 30a formed in the rear wall of the lamp body 30, a screw insertion hole (not shown) into which the optical axis adjusting screw 35 is screwed so as to penetrate the rear wall is formed. ing.

  In this lamp body 30, a reflecting plate 32 is disposed and accommodated so that the reflecting surface is directed forward and is rotatable in the vertical direction. The reflecting plate 32 is inserted into the lamp body 30 through the screw insertion hole. The reflection direction of light can be adjusted in the vertical direction by moving the optical axis adjusting screw 35 back and forth. Further, an inverter 33 connected to the battery via the power supply line L1 is disposed on the lower surface side of the lamp body 30, and a harness L2 having one end connected to the inverter 33 is connected to the lamp body 30 via the power supply line insertion hole 30b. Has been introduced in.

  In the discharge lamp starting device 1, the HID lamp DL is connected to the socket 20 and the harness L2 is connected to the connector 19, so that the HID lamp DL is inserted into the lamp body 30 through the lamp insertion hole 30a. It is arranged near the rear wall. The lamp replacement cap 34 is attached to the periphery of the lamp insertion hole 30a on the rear wall of the lamp body 30 so that the discharge lamp starting device 1 is accommodated in the recess 34a.

  Thus, the discharge lamp starting device 1 can be used for a discharge lamp lighting device for lighting an HID lamp, a vehicle headlamp device, a vehicle auxiliary lamp device, and a vehicle. By using the starter 1, it is possible to suppress the discharge between both ends of the secondary winding and improve the voltage resistance.

It is a side view of the principal part of the discharge lamp starting device of this invention. (A) is a top view of a core holder, (b) is a side view of a core holder. (A) is the schematic of the principal part of a discharge lamp starter, (b) is a schematic explanatory drawing of the principal part of a core holder. It is process drawing of the pulse transformer used for the discharge lamp starter of this invention. It is process drawing of the discharge lamp starter of this invention. (A) is an example of the circuit structure of the discharge lamp starting device of this invention, (b) is a perspective view of the discharge lamp starting device of this invention. (A) is schematic sectional drawing of the vehicle headlamp apparatus using the discharge lamp starter of this invention, (b) attaches the vehicle headlamp apparatus as shown to the figure (a). FIG. It is a perspective view of the conventional discharge lamp starting device. It is process drawing of the pulse transformer used for the conventional discharge lamp starter. It is process drawing of the other pulse transformer used for the conventional discharge lamp starter. It is a perspective view which shows the principal part of the conventional discharge lamp starter.

Explanation of symbols

2 Core 4 Core holder 6, 7 Holding part 8 Connection part 9 High voltage side terminal 10 Low voltage side terminal N2 Secondary winding P1, P2 Connection part

Claims (4)

A pulse transformer in which a primary winding and a secondary winding are wound around a rod-shaped core, a pair of holding portions that respectively hold both end portions of the core in the axial direction, and along the peripheral surface of the core a connecting portion that curves connecting the two holding portions, comprising a core holder opposite ends of the secondary windings and a pair of terminal portions which are connected respectively, each holding portion, the base portion being connected to a respective connecting portion And a pair of holding claws projecting in the same direction from both ends of the base portion, and one side so that the connecting portions to the connecting portions of both holding portions do not face each other in the axial direction of the core The holding part is connected to the connecting part at one end side of the base part, and the other holding part is connected to the connecting part at the other end side of the base part. Each holding part and the connecting part are respectively Z-shaped at the holding part and the connecting part. A gap, a discharge lamp starting device, characterized in that each terminal portion is disposed in a gap corresponding.   A discharge lamp lighting device comprising the discharge lamp starting device according to claim 1.   A vehicle headlamp device comprising: the discharge lamp lighting device according to claim 2; and a discharge lamp that is turned on by the discharge lamp lighting device.   A vehicle comprising the vehicle headlamp device according to claim 3.