JP4432771B2 - Discharge lamp starting device, discharge lamp lighting device, lighting apparatus, and vehicle - Google Patents

Description

  The present invention relates to a discharge lamp starting device, a discharge lamp lighting device, a lighting fixture, and a vehicle.

  Conventionally, a discharge lamp starting device having a circuit configuration as shown in FIG. 11 has been provided. The discharge lamp starting device A applies a high-pressure pulse to the discharge lamp La to start a discharge lamp La such as a metal halide lamp, and includes a charging capacitor C1 connected between input terminals t11 and t13, A series circuit of the primary winding N1 of the pulse transformer PT and the discharge gap SG connected in parallel to the charging capacitor C1, and the secondary winding of the pulse transformer PT connected between the input terminal t11 and the output terminal t21. N2 and a discharge lamp La is connected between the output terminals t21 and t22. Further, the output terminal of the lighting circuit unit (inverter INV) is connected to the input terminals t11 to t13, and the input terminal t12 and the output terminal t22 are short-circuited.

  The inverter INV converts the DC voltage of the DC power source E into a rectangular wave voltage, and the rectangular wave voltage from the inverter INV is supplied between the input terminals t11 and t12. When the lamp is started, a charging current is supplied from the inverter INV to the charging capacitor C1 via the input terminals t11 and t13. When the voltage across the charging capacitor C1 reaches a predetermined voltage, the discharge gap SG is discharged and the pulse transformer PT is discharged. A current flows through the primary winding N1. At this time, a high-voltage start pulse is generated in the secondary winding N2 of the pulse transformer PT, and the start pulse is applied to the discharge lamp La connected between the output terminals t21 and t22 to start the discharge lamp La.

  In recent years, HID lamps such as metal halide lamps have been used for automobile headlamps, and a headlight fixture using this type of HID lamp has a limited storage space for equipment. Conventionally, a discharge lamp starting device has been proposed in which the above-described circuit for applying a high-pressure pulse to the discharge lamp La is housed in a socket in which the electric lamp La is mounted (see, for example, Patent Document 1).

  FIG. 11 is an external view of such a discharge lamp starting device. The outer shell of the socket body 50 is composed of an upper cover 50a and a lower cover 50b, and a high-pressure pulse generator is housed inside the upper cover 50a. The socket port 71 of the high voltage pulse generator is exposed from the provided insulating cylinder 50c. The socket body 50 is provided with a connector 51 for connecting an electric wire from the inverter INV. The connector 51 is provided with three connection terminals 52 constituting the input terminals t11 to t13. .

  Next, the configuration of the high voltage pulse generator housed in the socket body 50 will be described with reference to FIG. FIG. 13A shows the manufacturing process of the high-voltage pulse generator, and an edgewise wire 62 to be the secondary winding N2 is wound around the cylindrical magnetic core 61, and the high-voltage side end of the secondary winding N2 is wound. The coil block 60 is configured by electrically connecting the high voltage side connection terminal 63 and the low voltage side connection terminal 64 to the low voltage side end. The socket body 70 is formed by sealing the periphery of the coil block 60 with an insulating synthetic resin using, for example, an injection molding method, and the socket port 71 of the discharge lamp La is formed simultaneously with the resin sealing. To do. Then, the bobbin 68 around which the winding 67 serving as the primary winding N1 is wound is disposed concentrically with the secondary winding N2, thereby forming the pulse transformer PT.

  Here, the high voltage side connection terminal 63 is formed by extending an inner electrode 66 electrically connected to the center electrode of the discharge lamp La from one end of the elongated connection piece 65, and the other end of the connection piece 65. Is electrically connected to the secondary winding N2. The inner electrode 66 is formed by integrally forming a pair of elastic contact spring pieces 66a and 66a that contact the center electrode and a connecting piece 66b that connects the bases of the elastic contact pieces 66a and 66a to each other. In order to prevent the position of the inner electrode 66 from shifting when the discharge lamp La is attached / detached, there has also been proposed one in which the connecting piece 66b is insert-molded into a part 71a of the socket port 71 as shown in FIG.

Further, as shown in FIG. 14, a high voltage side end cap 69A and a low voltage side end cap 69B are provided at the high voltage side end and the low voltage side end of the magnetic core 61, respectively, and both end caps 69A, 69B are arranged along the secondary winding N2. In the coil block 60 connected via the crosspieces 69C, a configuration in which the high voltage side connection terminal 63 and the low voltage side connection terminal 64 are respectively fixed to the high voltage side end cap 69A and the low voltage side end cap 69B has been proposed.
JP 2004-319617 A

  In the above-described discharge lamp starting device, the inner electrode 66 of the high-voltage side connection terminal 63 is connected to the high-voltage end of the secondary winding N2 via the elongated connection piece 65, and the connection piece 65 is connected to the high-pressure side end cap 69A. Even if the connection piece 65 is firmly fixed, the rigidity of the connection piece 65 itself is low. Therefore, when the resin sealing is performed by the injection molding method, the high pressure side connection terminal 63 is deformed by the resin pressure of the sealing resin, and the inner electrode 66 The position could vary. Here, if the position of the inner electrode 66 varies, the thickness of the resin sealed for insulation may vary, and the insulation performance may deteriorate.

  The present invention has been made in view of the above problems, and an object thereof is to provide a discharge lamp starting device, a discharge lamp lighting device, a lighting fixture, and a vehicle with improved insulation performance. .

  In order to achieve the above object, a first aspect of the present invention is directed to a magnetic core, a secondary winding wound around the magnetic core, and a core holder made of a synthetic resin that holds the magnetic core wound around the secondary winding. And a bottomed cylindrical socket port to which a cylindrical cap of the discharge lamp is mounted, and a central electrode provided on the bottom surface of the cap and electrically connected to one end of the secondary winding via a conductive member An inner electrode disposed on the bottom of the socket opening, an outer electrode disposed on the outer periphery of the socket opening and electrically connected to the outer circumferential electrode provided on the peripheral surface of the socket opening, and a magnetic core. Resin sealing part formed by resin-molding insulating synthetic resin on the outside of the held core holder and conductive member, and the socket and the secondary winding and the secondary winding are magnetically coupled Consisting of a primary winding that is connected via an inner electrode and an outer electrode And a pulse transformer for applying a starting high-pressure pulse to the discharge lamp, holding the conductive member on the core holder, and at least one of the inner electrode and the portion near the connection portion of the inner electrode in the conductive member. The terminal holding part which covers a part is formed integrally with the core holder.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the inner electrode and the conductive member are integrally formed of a metal material.

  A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the conductive member is formed by processing a sheet metal, and a reinforcing concavo-convex shape is formed on a part of the sheet metal.

  The invention of claim 4 is a discharge lamp lighting device, characterized in that the discharge lamp starting device according to any one of claims 1 to 3 is used.

  A fifth aspect of the invention is a lighting fixture, wherein the discharge lamp lighting device according to the fourth aspect is used.

  A sixth aspect of the present invention is a vehicle, wherein the lighting fixture according to the fifth aspect is used.

  According to the first aspect of the present invention, the terminal holding portion provided integrally with the core holder covers at least a part of the conductive member near the connection portion of the inner electrode or at least one of the inner electrodes. Therefore, the rigidity of the part covered with the terminal holding part can be increased, and when the resin sealing part is formed by resin sealing the core holder and the conductive member, the resin pressure of the sealing resin causes the The part near the connection part of the inner electrode or the position of the inner electrode does not shift. Accordingly, a sufficient thickness of the resin sealing portion for sealing the conductive member or the inner electrode can be ensured, and the dielectric breakdown of the molded resin can be prevented, so that the discharge lamp can be started stably over a long period of time. It is possible to realize a discharge lamp starting device capable of this.

  According to the invention of claim 2, in the invention of claim 1, since the inner electrode and the conductive member are integrally formed of a metal material, the operation of joining the inner electrode and the conductive member becomes unnecessary, and assembly is performed. Since the number of man-hours can be reduced and the number of parts can be reduced, the number of man-hours for parts machining can also be reduced, and a lower-cost discharge lamp starting device can be realized.

  According to the invention of claim 3, in the invention of claim 1 or 2, since the reinforcing uneven shape is formed on a part of the conductive member, the rigidity of the conductive member can be increased, and the core holder is sealed with resin. When it stops and forms a resin sealing part, it can suppress that a conductive member deform | transforms with the resin pressure of sealing resin.

  According to the invention of claim 4, since the discharge lamp starting device having improved insulation by sufficiently securing the thickness of the resin sealing portion for sealing the conductive member or the inner electrode is used, Even when a high voltage generated at the start is applied to the conductive member and the inner electrode, dielectric breakdown is less likely to occur, and a discharge lamp lighting device capable of obtaining a stable lighting state can be provided.

  According to the invention of claim 5, by using the discharge lamp lighting device of claim 4, it is possible to provide a lighting fixture capable of obtaining a stable lighting state.

  According to the invention of claim 6, by using the lighting fixture of claim 5, it is possible to provide a vehicle equipped with a lighting fixture that can obtain a stable lighting state.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS. The discharge lamp starting device A of the present embodiment applies a high-pressure starting pulse to start a discharge lamp La such as a metal halide lamp, and has a circuit configuration as shown in FIG. Since the circuit of FIG. 11 is the same as that of the conventional discharge lamp starting device described in the background art, common components are denoted by the same reference numerals and description thereof is omitted.

  FIG. 1 is an explanatory view showing a manufacturing process of the discharge lamp starting device A. A rectangular wire 12 is used on a circumferential surface of a round bar-shaped ferrite core 11 (magnetic core) having a specific resistance of 1000 Ωm or more without using a bobbin. The secondary winding N2 is formed by winding one layer edgewise, and the secondary winding N2 wound around the ferrite core 11 is fixedly held by the core holder 20. In this embodiment, the flat wire 12 is wound directly around the ferrite core 11, but the flat wire 12 may be wound using a bobbin (not shown).

  The core holder 20 is made of a synthetic resin molded product, and sandwiches the end portion of the ferrite core 11 from both longitudinal ends of the strip-shaped main portion 21 arranged along the axial direction of the ferrite core 11 as shown in FIG. Each pair of locking pieces 22 is formed to extend, and the ferrite core 11 is held by the core holder 20 by hooking and locking the claw 23 at the tip of each locking piece 22 to the peripheral surface of the ferrite core 11. The Notches 24 and 25 for inserting the high-voltage end 13 and the low-voltage end 14 of the secondary winding N2 are formed on both sides in the longitudinal direction of the main portion 21, and the high voltage protruding through these notches 24 and 25. A high voltage side conductive member 30 and a low voltage side conductive member 31 that are electrically connected to the end 13 and the low voltage end 14 are fixed to the core holder 20. Further, a terminal holding piece 26 protruding in a direction substantially perpendicular to the planar direction of the main portion 21 is integrally formed from the end portion on the high pressure side of the main portion 21, and further on the low pressure side of the main portion 21. A press-fit groove 27 is formed at the edge of the notch 25 at the end.

  The high-voltage side conductive member 30 is formed by punching and bending a sheet metal, thereby fixing a fixed piece 30a whose middle part in the longitudinal direction is bent into a substantially Z shape, and a caulking piece 30b bent into a substantially U shape, A connecting piece 30c that connects one end of the fixing piece 30a in the longitudinal direction and one piece of the caulking piece 30b is integrally formed. The high-voltage side conductive member 30 is insert-molded in the core holder 20 so that the bent portion of the fixed piece 30 a is embedded in the terminal holding piece 26.

  The low-voltage side conductive member 31 is formed by stripping and bending a sheet metal to form a strip-shaped fixed piece 31a and a crimped piece that extends from the side edge of the fixed piece 31a and has its tip folded back into a substantially U shape. 31b is integrally formed, and a narrow terminal piece 31c protrudes from the upper edge of the fixed piece 31a. The low-voltage side conductive member 31 is fixed to the core holder 20 by press-fitting the fixing piece 31 a into the press-fitting groove 27 of the core holder 20.

  When the ferrite core 11 around which the secondary winding N2 is wound is held in the core holder 20 to which both the conductive members 30 and 31 are fixed as described above, the high-voltage end 13 and the low-voltage end 14 of the secondary winding N2 are The caulking pieces 30b and 31b of both the conductive members 30 and 31 are inserted into the caulking pieces 30b and 31b through the notches 24 and 25 formed in the main portion 21 of the core holder 20, and the caulking pieces 30b and 31b are caulked to thereby increase the high voltage of the secondary winding N2. The coil block 10 is assembled by electrically connecting the end 13 and the low-voltage end 14 to the conductive members 30 and 31, respectively.

  Thereafter, the outside of the coil block 10 (the core holder 20 holding the ferrite core 11 and the two conductive members 30 and 31) is sealed with an insulating synthetic resin, for example, by an injection molding method. (Stop part) 41 is formed, and a socket port 42 for receiving the cap of the discharge lamp La is formed integrally with resin sealing (see FIGS. 1 and 3). Needless to say, at the time of resin sealing, the fixing pieces 30a and the terminal pieces 31c of the conductive members 30 and 31 that are electrically connected to the outside and portions having no functional problem may be exposed from the sealing resin. In this embodiment, the end of the ferrite core 11 on the high-pressure side is completely sealed with a sealing resin to ensure insulation performance, but the end surface on the low-pressure side is not functionally problematic and is exposed from the sealing resin. ing.

  Then, the winding 15 is wound around the portion of the high-voltage block main body 41 including the secondary winding N2 to form the primary winding N1, and the pulse transformer PT is formed by the primary winding N1 and the secondary winding N2. In addition, the high voltage circuit block 1 is formed by assembling the inner electrode 43 and the outer electrode 44 to the socket opening 42. Coil terminals 15a are provided at both ends of the winding 15, respectively.

  The inner electrode 43 has a rectangular plate-like central piece 43a placed on the bottom of the socket opening 42, and elastic contact spring pieces 43b are formed extending upward from two opposite sides of the central piece 43a. . A caulking piece 43c extends upward from the other side of the central piece 43a, and the tip of the caulking piece 43c is folded downward. The socket opening 42 has a double cylindrical outer wall 42b and an inner wall 42a, and the fixed piece 30a of the high-voltage side conductive member 30 is exposed at the bottom of the portion surrounded by the inner wall 42a. When the inner electrode 43 is disposed in the inner wall 42a, the fixed piece 30a is inserted into the U-shaped portion 43d of the crimping piece 43c, and the U-shaped portion 43d is crimped, the inner electrode 43 is electrically connected to the high-voltage side conductive member 30. And mechanically connected. The outer electrode 44 is fixed by press-fitting a base portion into a press-fit groove 42c formed in the outer wall 42b, and an elastic spring portion 44a that protrudes from the outer wall 42b to the center portion of the socket port 42 is provided on the distal end side. It is integrally formed. Thus, when the base 80 of the discharge lamp La (see FIG. 12) such as an HID lamp is inserted into the socket opening 42, the inner electrode is connected to the center electrode (not shown) provided on the bottom surface of the cylindrical base 80. 43 is connected, and the outer electrode 44 is connected to the outer peripheral electrode 81 provided on the peripheral surface of the base 80.

  As described above, in the present embodiment, the terminal holding piece 26 provided integrally with the core holder 20 covers a portion in the vicinity of the connection portion of the inner electrode 43 in the high-voltage side conductive member 30 (that is, the base portion of the fixed piece 30a). Therefore, the rigidity of the part (the base part of the fixed piece 30a) covered with the terminal holding piece 26 can be increased. Therefore, when the core holder 20 and the both conductive members 30 and 31 are resin-sealed to form the high-voltage block main body 41, the portion of the high-voltage side conductive member 30 covered with the terminal holding piece 26 by the resin pressure of the sealing resin. Since the thickness of the resin sealing portion (high voltage block main body 41) covering the high voltage side conductive member 30 is secured to a predetermined thickness or more without shifting the position, even when a high voltage start pulse is generated, Dielectric breakdown can be suppressed.

  Next, the manufacturing process of the discharge lamp starting device A will be described with reference to FIG. A discharge gap SG, a pulse generation capacitor C1, a bypass capacitor (not shown), a connection harness (not shown) for connection to the inverter INV, etc. are formed on a printed wiring board or a lead frame 2a. The low voltage circuit block 2 is configured by mounting. Although a bypass capacitor is not shown in FIG. 11, the capacitor is electrically connected between the input terminals t11 and t12 to form a bypass loop when a pulse is generated. Then, after the high voltage circuit block 1 is assembled to the substrate 2a of the low voltage circuit block 2 and the circuit blocks 1 and 2 are electrically connected, the top cover 3 made of a synthetic resin molded product and the like to secure insulation The lower surface cover 4 is attached, and the space surrounded by the covers 3 and 4 is partially or entirely filled with an insulating resin such as silicon, and the upper surface shield cover 5 and the lower surface shield cover from both the upper and lower sides to further suppress noise. 6 is completed to complete the assembly of the discharge lamp starting device A (see FIG. 4B). The top cover 3 and the top shield cover 5 are formed with round hole-like opening windows 3a and 5a for exposing the socket opening 42, so that the cap 80 of the discharge lamp La can be mounted through the opening windows 3a and 5a. It has become.

  The discharge lamp starting device A is configured as described above. By using the high-pressure circuit block 1 having high insulation performance, even if a high-pressure pulse for starting is applied when starting the discharge lamp La, dielectric breakdown occurs. Since it is difficult to maintain a desired starting performance for a long period of time, non-lighting of the discharge lamp La hardly occurs, and a stable lighting state can be obtained.

  Further, the discharge lamp starting device A of the present embodiment applies a starting high-pressure pulse to the discharge lamp La in order to start the discharge lamp La made of an HID lamp such as a metal halide lamp. A block diagram of the discharge lamp lighting device B using the device A is shown in FIG. The discharge lamp lighting device B includes an inverter INV that converts a DC voltage of a DC power source E into a rectangular wave voltage and supplies the rectangular wave voltage to a discharge lamp La mounted on the discharge lamp starting device A, and a high-pressure pulse included in the discharge lamp starting device A. The generator is composed of a charging capacitor C1, a discharge gap SG, and a pulse transformer PT. Since the discharge lamp lighting device B uses the above-described discharge lamp starting device A with improved insulation performance, even if a high voltage generated when starting the discharge lamp La is applied to the high-voltage side conductive member 30 or the inner electrode 43, dielectric breakdown occurs. Therefore, it is possible to realize a discharge lamp lighting device that is less likely to cause a stable lighting state.

  FIG. 9 shows an embodiment of a vehicle headlight fixture (lighting fixture) C using the above-described discharge lamp lighting device B. The headlamp fixture C is a lamp housing 101 fixed to the vehicle body. The discharge lamp starting device A and the reflector 102 are housed inside, and a lens 103 is attached to an opening provided on the front surface of the lamp housing 101. An opening 104 for replacing the discharge lamp La is provided at the rear of the lamp housing 101, and a cap 105 is attached to the opening 104 so as to be freely opened and closed. Also, the inverter INV that operates by receiving power supply from the DC power source E is attached to the lower portion of the lamp housing 101, and the electric wire 106 from the inverter INV is connected to the connector CN of the discharge lamp starting device A. It is connected. In the figure, 107 is a connector for connecting a power supply line from the DC power source E, 108 is screwed into the lamp housing 101 so as to be able to advance and retreat, and the direction of the discharge lamp La and the reflector 102 is changed by changing the screwing amount. This is an optical axis adjusting screw for adjusting the optical axis by changing. This headlamp fixture C is configured using the above-described discharge lamp lighting device B, and if this headlamp fixture C is used for a vehicle headlamp, a vehicle headlamp fixture that can obtain a stable lighting state is obtained. Can be realized. Note that the lighting fixture is not limited to the headlamp C, and the above-described discharge lamp lighting device B may be used to configure a lighting fixture used for a light source of a projector, for example.

  FIG. 10 shows an embodiment of a vehicle D using the above-described vehicle headlamp fixture C. One vehicle headlamp fixture C is attached to each of the left and right sides of the front surface of the vehicle body 110. This vehicle D uses the vehicle headlamp fixture C described above, and by using the headlamp fixture C that can obtain a stable lighting state, the vehicle has high safety and stable quality at night driving. Can be realized.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. In addition, since structures other than the core holder 20 and the high-voltage side conductive member 30 are the same as those in the first embodiment, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

  In the first embodiment, the high-voltage side conductive member 30 and the inner electrode 43 are formed separately and are caulked and joined, whereas in this embodiment, the sheet metal is punched and bent. Thus, the elastic contact piece 30e is formed integrally with the high-voltage side conductive member 30 ′.

  As shown in FIG. 5A, the high-voltage side conductive member 30 'is formed to extend upward from the upper edge of the spring support piece 30d bent in a substantially U-shape and both side pieces of the spring support piece 30d. A pair of elastic contact spring pieces 30e, a caulking piece 30b bent in a substantially U shape, and a connecting piece 30c for connecting the central piece of the spring support piece 30d and one piece of the caulking piece 30b to each other are continuously integrated. In preparation. Here, the spring support piece 30d and the elastic contact piece 30e constitute an inner electrode 43 'that is electrically connected to the center electrode of the discharge lamp La.

  The high-voltage side conductive member 30 ′ is insert-molded in the core holder 20 so that the spring support piece 30d (that is, a part of the inner electrode 43 ′) is embedded in the terminal holding piece 26 as shown in FIG. ing. After the low-voltage side conductive member 31 is press-fitted and fixed to the core holder 20 to hold the ferrite core 11 around which the secondary winding N2 is wound, both end portions 13 and 14 of the secondary winding N2 are connected to the both conductive members 30. After the coil block 10 is formed by being electrically connected to 'and 31 (see FIG. 6A), an insulating synthetic resin is molded on the outside of the coil block 10 to form the high-pressure block body 41 ( (Refer FIG.6 (b)). During resin sealing, the elastic contact spring piece 30e of the conductive member 30 'and the terminal piece 31c of the conductive member 31 and the end face on the low pressure side of the ferrite core 11 that are electrically connected to the outside are exposed from the sealing resin. The elastic contact piece 30e is exposed from the bottom of the portion surrounded by the inner wall 42a of the socket port 42.

  As described above, in the present embodiment, the inner electrode 43 ′ (elastic contact spring piece 30e) connected to the center electrode of the discharge lamp La is formed integrally with the high-voltage side conductive member 30 ′. As described above, after the high-voltage block main body 41 is resin-molded, the operation of joining the high-voltage side conductive member 30 and the inner electrode 43 ′ formed separately is unnecessary, and the number of assembly steps in the manufacturing process can be reduced. . In addition, by processing two components of the high-voltage side conductive member 30 ′ and the inner electrode integrally, the number of components can be reduced, and the number of man-hours for processing the components can be reduced, thereby providing a lower cost discharge lamp starting device. Can do.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. Since the configuration other than the high-voltage side conductive member 30 is the same as that of the second embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted.

  In the present embodiment, in the above-described second embodiment, a part of the high-voltage side conductive member 30 ′ (for example, the connecting piece 30c that connects the caulking piece 30b and the spring support piece 30d) is driven out from one surface side in the thickness direction. The reinforcing rib 30f protrudes on the opposite side surface, and by forming the irregular shape, the rigidity of the connecting piece 30c (high voltage side conductive member 30 ') is increased. It can suppress that the piece 30c (high voltage | pressure side electrically-conductive member 30 ') receives the resin pressure of molding resin, and deform | transforms.

  In the first embodiment described above, as in the present embodiment, a part of the high-voltage side conductive member 30 may be driven out from one surface side in the thickness direction, and a reinforcing rib may be projected on the opposite surface. By forming the concavo-convex shape, the rigidity of the high-voltage side conductive member 30 itself is increased, and the high-voltage side conductive member 30 is deformed by receiving the resin pressure of the molding resin when molding the resin sealing portion (the high-voltage block body 41). Can be suppressed.

It is explanatory drawing explaining the manufacturing process of the discharge lamp starting device of Embodiment 1. FIG. It is an external appearance perspective view of the core holder used for the same as the above. The high-pressure block main body used for the above is shown, (a) is a plan view and (b) is an EE cross-sectional view. (A) is explanatory drawing explaining an assembly process same as the above, (b) is an external appearance perspective view same as the above. (A) is an external appearance perspective view of the high voltage | pressure side electrically-conductive member 30 used for the discharge lamp starting device of Embodiment 2, (b) is an external appearance perspective view of the core holder used for the same as the above. (A) is an external appearance perspective view of the coil block used for the above, (b) is an external perspective view of the high voltage block main body used for the above. It is an external appearance perspective view of the core holder used for the discharge lamp starting device of Embodiment 3. (A) is an external appearance perspective view of the high voltage | pressure side electrically-conductive member 30 used for the same as the above, (b) is a principal part expansion perspective view of a core holder. It is sectional drawing of the vehicle headlamp fixture using the discharge lamp starter of each embodiment. It is a principal part perspective view of the vehicle using the discharge lamp starter of each embodiment. It is a block diagram of the discharge lamp lighting device using the discharge lamp starting device of each embodiment. It is an external appearance perspective view of the conventional discharge lamp starter. (A) (b) is a disassembled perspective view of the high voltage | pressure pulse generation part used for the same as the above. It is an external appearance perspective view of the transformer block used for the same.

Explanation of symbols

11 Ferrite core 13 High voltage end 20 Core holder 26 Terminal holding piece 30 High voltage side conductive member 30a Fixed piece 41 High voltage block body 42 Socket port 43 Inner electrode N1 Primary winding N2 Secondary winding

Claims (6)

A magnetic core,
A secondary winding wound around a magnetic core;
A synthetic resin core holder for holding a magnetic core wound with a secondary winding;
A bottomed cylindrical socket port to which a cylindrical cap of a discharge lamp is attached;
An inner electrode electrically connected to one end of the secondary winding via a conductive member, electrically connected to a center electrode provided on the bottom surface of the base, and disposed at the bottom of the socket opening;
An outer electrode electrically connected to an outer peripheral electrode provided on a peripheral surface of the base and disposed on an outer periphery of the socket opening;
A resin sealing part formed by resin-molding an insulating synthetic resin on the outside of the core holder and the conductive member holding the magnetic core, and the socket opening formed integrally;
A pulse transformer comprising a primary winding magnetically coupled to the secondary winding and the secondary winding, and applying a starting high-pressure pulse to the discharge lamp via the inner electrode and the outer electrode;
The conductive member is held by the core holder, and a terminal holding part that covers at least one part of the conductive member in the vicinity of the connection portion of the inner electrode or at least one of the inner electrodes is integrated with the core holder. A discharge lamp starting device characterized in that the discharge lamp starting device is formed.   The discharge lamp starting device according to claim 1, wherein the inner electrode and the conductive member are integrally formed of a metal material.   The discharge lamp starter according to claim 1 or 2, wherein the conductive member is formed by processing a sheet metal, and a reinforcing uneven shape is formed on a part of the sheet metal.   A discharge lamp lighting device using the discharge lamp starting device according to any one of claims 1 to 3.   The lighting fixture using the discharge lamp lighting device of Claim 4. A vehicle using the lighting apparatus according to claim 5.

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