JP2003158022A - High voltage transformer and high pressure discharge lamp device - Google Patents

Abstract

(57) Abstract: Provided is a high-voltage transformer in which high-voltage energy is hardly leaked, and a high-pressure discharge lamp device in which high-frequency energy is hardly leaked by directly connecting the high-voltage transformer and the high-pressure discharge lamp. A first U-shaped cross section having a pair of legs is provided.
One end of the core material 1a and one leg 1a1 of the first core material 1a are opposed to each other by forming a core gap G between the other leg 1a2 of the first core material 1a and the other end. A core 1 having an I-shaped second core material 1b
And a primary winding 3 wound concentrically and spaced apart from the second core material 1b on the core material 1b. , Surrounding the primary winding 3, the secondary winding 2 and the second core material except for one end face thereof, and forming a core gap G formed between the first and second core materials 1a and 1b. And an insulating coating molded body 4 that is buried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high voltage transformer and a high pressure discharge lamp device including the same.

[0002]

2. Description of the Related Art A metal halide lamp type high pressure discharge lamp has come to be used as a light source of an automobile headlight device. In order to adapt the high-pressure discharge lamp to this application, a high-voltage generator that generates a high starting pulse voltage and instantly starts (restarts) the high-pressure discharge lamp, and a large amount of power is supplied at the time of starting to make the luminous flux rise. And a lighting circuit device that is controlled to be faster.

In a conventional headlight device for an automobile of this type, a high voltage generator is integrated with a lighting circuit device, and the lighting circuit device is disposed apart from a high-pressure discharge lamp, and the lighting circuit device is provided. A structure in which a high withstand voltage cable is connected between the high pressure discharge lamp and the high pressure discharge lamp is generally adopted. (Prior Art 1) On the other hand, it is possible to dispose the high voltage generator in the vicinity of the high pressure discharge lamp separately from the lighting circuit device. (Modification) By the way, the high voltage generator is composed of an oscillation circuit including a gap and a capacitor, and a high voltage transformer to which the oscillation output is applied. As shown in FIG. 7, the high voltage transformer includes a core 101, a secondary winding 102, a bobbin 103, and a primary winding 104. In the core 101, a pair of U-shaped core members having the same shape are opposed to each other so that one leg portion 101a abuts each other and a core gap G is formed between the other leg portions 101b. The secondary winding 102 has a pair of the other leg portions 101b, 1b in which the core gap G is formed.
The core 101 is wound around 01b. Bobbin 1
03 surrounds the outside of the secondary winding 102 and the other leg 101b of the core 101, and has a winding groove 103a for the primary winding 104 in the center of the outer peripheral surface. Part of the primary winding 104 is the winding groove 103 a of the bobbin 103.
The other leg portion 101b of the core 101 in the state of being stored in
Is wound from above the secondary winding via the bobbin 103.

Further, Japanese Patent Publication No. 2000-506673 describes a high pressure discharge lamp in which a ballast is arranged in the lamp base 11 of the arc tube 10. (Prior art 2)

However, with the configuration of the prior art 1, the lighting circuit device becomes large in size, and the cost increases due to the high withstand voltage cable being routed, and in addition to the high withstand voltage cable. Because the high voltage pulse is superposed,
High-voltage energy easily leaks from the high-voltage cable via stray capacitance, and noise increases, and it is dangerous if the insulation of the high-voltage cable is damaged for some reason.

Further, according to the modified example, since the high withstand voltage cable is laid around less, the above problems are reduced accordingly. However, since the high-pressure discharge lamp, the high-voltage generating device and the lighting circuit device must be individually arranged, the mounting work is troublesome and a large mounting space is required.

Further, the conventional high voltage generator has a problem that high voltage energy of the high voltage transformer is likely to leak. That is, the secondary winding 1 is attached to the coil bobbin 103.
Since the pair of U-shaped core materials are inserted into the coil bobbin 103 from the left and right after the 02 and the primary winding 104 are mounted, a slight gap is likely to occur between the coil bobbin 103 and the core 101. Then, glow discharge is generated between the high potential side of the secondary winding 102 and the external low potential side through a slight gap, and high voltage energy leaks out.

On the other hand, in the prior art 2, since the ballast, that is, the lighting circuit is integrated with the high-pressure discharge lamp, it is not necessary to circulate the high withstand voltage cable, so that neither the mounting work nor the mounting space is problematic. It seems like that, but it is practically impossible. Because it is a common knowledge of those skilled in the art that the ballast is considerably larger than the size of the high pressure discharge lamp, and if a high voltage generator is further added to the ballast to integrate them, it will no longer be used for automobiles. This is because the size of the headlight makes it difficult to put on and take off the headlight. However, even if it is assumed that the ballast described in the related art 2 is a high voltage generator including the inductive ignition constituent element 17 and the constituent elements 17 and 19, there are the following problems in practical use. .

Currently used high pressure discharge lamps for automobiles are configured to be detachably supported in a lamp socket, so that a ballast is integrated with the high pressure discharge lamp in the prior art. With 2, the compatibility is lost. In addition, it is difficult to design a reflecting mirror, the inductive ignition component 17 has a toroidal structure, which is inferior in manufacturability and increases in size and cost, and a high-voltage side is exposed and noise is likely to occur, There is also a problem that it is difficult to mold the lamp base, that is, the base.

An object of the present invention is to provide a high voltage transformer in which high voltage energy is hard to leak and a high pressure discharge lamp device including the high voltage transformer.

Another object of the present invention is to provide a high pressure discharge lamp device in which a high voltage transformer and a high pressure discharge lamp are directly connected to each other and high frequency energy is less likely to leak.

[0011]

According to a first aspect of the present invention, there is provided a high voltage transformer having a pair of legs and having a U-shaped cross section.
Of the first core material and one leg portion of the first core material, one end of which is in contact with the other leg portion of the first core material, and the other end of which has an I-shape. A core having a second core material; a secondary winding wound around the second core material;
A primary winding wound on a second core material in a concentric relationship from above the secondary winding and spaced apart; a primary winding, a secondary winding and a second core With the exception of
And an insulating coating molded body filling the core gap formed between the first and second core materials.

In the present invention and the following respective inventions, the definitions and technical meanings of terms are as follows unless otherwise specified.

<Regarding Core> The core has a first core material and a second core material and forms a closed circuit having a core gap. The first core material has a U-shaped cross section. If the first core material has a U-shaped cross section,
It may be a so-called jar shape. The second core material is I-shaped. Then, one end of the second core member abuts on one leg of the first core member, and the other end forms a core gap with the other leg of the first core member. The core is configured by facing each other.

The core can be formed by using, for example, a ferrite molded body or a synthetic resin molded body to which ferrite fine particles are added. The ferrite is not limited to a particular composition, but Ni-Zn ferrite is preferably used. In the case of a synthetic resin molded product, the content ratio of ferrite becomes better as the content increases, but the moldability decreases, so it is preferable to set an appropriate content ratio. For example, when Ni-Zn ferrite is used, it is preferable that the ferrite fine particles are contained in the range of about 70 to 90% by mass, and optimally about 80% by mass. By forming a core using a synthetic resin molded body containing ferrite fine particles, good magnetic characteristics at high frequencies can be imparted. Further, since it can be molded using a molding machine for synthetic resin, it is easy to manufacture and inexpensive. Further, it is easy to form a core having a complicated shape.

<Regarding Secondary Winding> The secondary winding is wound around the second core material. Further, the second winding is formed by using an insulated conductor having a sufficiently high dielectric strength because a high voltage is induced therein. In addition, the second winding connects this to the second
The core material may be directly wound, or if necessary, may be wound via an interlayer insulating sheet. Furthermore, the secondary winding has a relatively large number of turns in order to increase the step-up ratio with respect to the primary winding as much as possible, but it is preferable to form the secondary winding in a single layer.

<Regarding the Primary Winding> The primary winding is wound on the second core material in a concentric relation from the upper side of the secondary winding and at a distance from the secondary winding because it is safe at low voltage. It The number of turns of the primary winding is reduced in order to increase the boosting ratio as much as possible, and the number of turns may be about half a turn or more.

<Insulation-Coated Molded Product> The insulation-coated molded product is made of a synthetic resin having a required dielectric strength, for example, a liquid crystal polymer, except for the primary winding, the secondary winding and the second core except one end surface thereof. And the core gap formed between the first and second core materials is filled.
Therefore, the second core material is covered with the insulating coating molded body except for one end surface thereof. The secondary winding is the second
The polarity is selected so that the terminal located on the other end side of the core material has a high potential. Further, the entire secondary winding is covered with the insulating coating molded body. On the other hand, the primary winding may be coated so as to be isolated from the secondary winding by an insulating coating molding, but it is preferably coated entirely. The core gap formed between the first core material and the second core material of the core is filled with the insulating coating molded body as described above.

<Other Constituent Elements> In the present invention, although not essential constituent elements, the performance of the high voltage transformer is improved or the function thereof is improved by selectively adding the following constituent elements as necessary. Will be added.

1 Lead Means The lead means is a means for connecting the primary winding to an input circuit, for example, an oscillation circuit, and the secondary winding for an output circuit, for example, a high pressure discharge lamp. Be outsourced to the outside.

2 Cases The case is for the purpose of housing the high-voltage transformer alone or together with the input circuit and / or the output circuit to protect the housing components, arrange the appearance, and mount the housing at a predetermined position. Used.

The case can be formed using a suitable synthetic resin material. However, the high voltage transformer can be magnetically shielded from the outside by forming the case using a synthetic resin to which ferrite fine particles are added. In this case, the composition and the content ratio of the ferrite are not particularly limited, but can be generally smaller than that in the core. For example, when Ni-Zn ferrite is used, the range of about 35 to 65 mass% is suitable, and optimally about 50 mass%.

The case may be formed integrally or a plurality of parts may be individually formed and assembled. In the latter case, for example, a separable structure can be adopted for the container-shaped case body and its lid.

3 Regarding Lamp Socket The lamp socket serves to mechanically support the high-pressure discharge lamp and to form an electrical connection when the high-voltage transformer is used as an igniter of a high-voltage discharge lamp for automobiles. In such a case, if the lamp socket is attached to the high voltage transformer and both are integrated, leakage of high voltage energy is reduced. When the high voltage transformer is housed in the case, it is allowed to form a part of the lamp socket body integrally with the case when attaching the lamp socket to the high voltage transformer.

<Regarding Operation of the Present Invention> In the present invention, the primary winding is connected to an input circuit, for example, an oscillation circuit, and
When the secondary winding is connected to an output circuit, for example, a pair of electrodes of a high-pressure discharge lamp, a high voltage can be obtained across the secondary winding due to the boosting action. Moreover, the secondary winding is almost entirely covered with the insulating coating molded body except the one end side where the second core material contacts the first core material, so that the one end side is the low potential side. As a result, leakage of high voltage energy can be reliably suppressed.

Further, since the core gap is filled with the insulating coating molded body, the predetermined core gap can be accurately secured only by fitting the first core material from the outside of the insulating coating molding.

The high pressure discharge lamp device according to the invention of claim 2 is
A discharge container in which a pair of electrodes are sealed in a transparent airtight container and a discharge medium is sealed inside, and a high-potential-side power receiving contact derived from the pair of electrodes of the discharge container in which a base body is disposed at one end of the discharge container and A high-pressure discharge lamp having a base in which the low-potential-side power receiving contact is arranged separately from the base of the base;
A core, a secondary winding wound around the core, a primary winding spaced apart from the secondary winding and wound around the core from above, and at least the main winding, the secondary winding and the core A high-voltage transformer having an insulating coating molded body surrounding the portion; an oscillating circuit for applying an oscillation output to the primary winding of the high-voltage transformer; a lamp socket body integrally formed with the insulating coating molding, and Low-potential-side power supply in which a high voltage is applied between the high-potential-side power supply contact and the high-potential-side power supply contact, which is led out from the secondary winding through the insulation-coated molded body and is disposed inside the lamp socket body. It has a contact and supports the base of the high-pressure discharge lamp, the high-potential side power feeding contact serves as the high-potential side power receiving contact, and the low-potential side power feeding contact serves as the low-potential side receiving contact.
It is characterized in that it is provided with a lamp socket to which each is connected.

<About High-Pressure Discharge Lamp> The high-pressure discharge lamp includes at least a discharge container and a base.

(Regarding Discharge Container) The discharge container comprises at least a translucent airtight container, a pair of electrodes, and a discharge medium.

The translucent airtight container is made of quartz glass or translucent ceramics and has an airtight discharge space inside. The term "translucent ceramics" means translucent ceramics such as translucent alumina and YAG, or single crystals thereof. Further, it is allowed to provide a sealing portion at one end or both ends for sealing an electrode described later.

The pair of electrodes are sealed inside the translucent airtight container so as to face each other. In order to supply power to the electrodes, an introduction line introduced from the outside is connected to the electrodes in the light-transmitting airtight container via an airtight sealing portion.

The discharge medium differs depending on whether the high-pressure discharge lamp adopts a metal halide lamp, a mercury lamp, a high-pressure sodium lamp, a high-pressure rare gas discharge lamp, or the like. In the case of a metal halide lamp, a first embodiment using a light emitting metal halide, mercury and a rare gas, and a first halide which is a light emitting metal halide, a second halide and a rare gas in place of mercury. It is possible to use any of the second embodiments in which the mercury is used and essentially no mercury is enclosed. In any of the embodiments, as the luminescent metal halide, a plurality of luminescent metal halides including, for example, sodium Na, scandium Sc, and a rare earth metal such as dysprosium Dy can be used. For mercury lamps,
Mercury and noble gas are used. For high pressure sodium lamps, sodium, mercury and noble gases are used. In the case of a high pressure rare gas discharge lamp, a rare gas is used.

<Regarding High Voltage Transformer> The high voltage transformer includes at least a core, a secondary winding, a primary winding and an insulating coating molding. The secondary winding is wound around the core. The primary winding is spaced apart from the secondary winding and wound around the core from above. The insulating coating molding surrounds at least a major part of the primary winding, the secondary winding and the core.

<Oscillation Circuit> The oscillation circuit is a means for driving the high voltage transformer by applying an oscillation output to the primary winding of the high voltage transformer. For example, a breakover element such as a discharge gap and a charge such as a capacitor. The supply means is a main component.

<Regarding Lamp Socket> The lamp socket includes at least a lamp socket body, a high-potential side power feeding contact and a low-potential side power feeding contact. At least a part of the lamp socket body is formed integrally with the insulating coating molded body of the high voltage transformer. The high-potential-side power supply contact extends from the high-potential-side terminal of the secondary winding through the insulation-coated molded body to the outside. The low potential side power contact is
It is led out from the primary winding through the insulating coating molded body to the outside. It should be noted that when deriving the high-potential side power feeding contact and the low-potential side power feeding contact, it is necessary to ensure a required insulation distance between the primary winding or the secondary winding having different potentials. Then, the high potential side power supply contact is connected to the high potential side power reception contact, and the low potential side power supply contact is connected to the low potential side power reception contact.

<Regarding Operation of the Present Invention> In the present invention, since the lamp socket is integrated with the high voltage transformer, the following operation is achieved.

1. Since it is not necessary to route the high withstand voltage cable between the high withstand voltage transformer and the high pressure discharge lamp, high voltage energy does not leak from the high withstand voltage cable.

2 Since the high-pressure discharge lamp and the high-voltage transformer can be separated via the lamp socket, it is possible to mount the currently used high-voltage discharge lamp for automobiles,
Compatible.

(3) Since the high-voltage transformer can be attached by attaching the lamp socket at a predetermined position, the workability of assembling is excellent.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the high voltage transformer and the high pressure discharge lamp device of the present invention.
Is a front sectional view of a main part, and FIG. 2 is a plan sectional view of the main part. In each figure, HPT is a high voltage transformer and LS is a lamp socket.

The high-voltage transformer HPT comprises a core 1, a secondary winding 2, a primary winding 3 and an insulating coating molding 4. The core 1 contains about 80 Ni-Zn ferrite fine particles.
It is made by molding a synthetic resin containing mass% and comprises a U-shaped first core material 1a and an I-shaped second core material 1b.
The inner surface of the tip of one leg 1a1 of the first core material 1a and the second
Is in close contact with one end surface of the core material 1b. The inner surface of the tip of the other leg 1a2 of the first core material 1a and the second core material 1b
A core gap G is formed between the core gap G and the other end surface.
The secondary winding 2 is directly wound around the first core material 1b. The primary winding 3 is separated from the secondary winding 2 outside the second winding 2.
Is wound around the core material 1b. The insulating coating molded body 4 is
It is made of liquid crystal polymer and covers the second core material 1b except for one end surface of the core material 1b, the secondary winding 2 and the primary winding, and the secondary winding 2 and the primary winding 3 Fills the space between them and fills the core gap G. The first core material 1a is covered with the insulating coating molded body 4 with a part thereof exposed to the outside.

The lamp socket LS comprises a lamp socket body 5, a high-potential side power supply contact 6 and a low-potential side power supply contact 7.
(Not shown). Lamp socket body 5
Has a tubular shape and is integrally molded with the insulating coating molded body 4. The high-potential-side power supply contact 6 is in the shape of a clip, and the insulating coating molded body 4 is formed from the high-potential-side end of the secondary winding.
And is led out into the lamp socket body 5.
Although not shown, the end of the secondary winding 2 on the low potential side is connected to the ground potential. Although not shown here, the low-potential side power supply contact 7 is composed of a conductor 7a derived from the ground potential and a conductor 7b connected to one end of the primary winding 3 which is separated from the conductor 7a as described later. ing.

FIGS. 3 to 5 show one embodiment of the high pressure discharge lamp device of the present invention, FIG. 3 is a circuit block diagram shown together with a lighting circuit, FIG. 4 is an explanatory view showing how the connector is attached and detached, and FIG. 5 is an igniter. It is a conceptual waveform diagram which shows an output voltage. The high-pressure discharge lamp device includes a high-pressure discharge lamp HPL, a high-voltage transformer HPT, a lamp socket LS, and an oscillator circuit OSC, and a lighting circuit LO is connected via a cable FK.
Connect to the output of C. The high-voltage transformer HPT and the oscillation circuit are housed in an insulating case K to form a high-voltage generator HPG called an igniter. The lighting circuit LOC is powered by the DC power supply DC.

The high pressure discharge lamp HPL comprises a discharge vessel DB and a base B. The discharge vessel DB is composed of a translucent airtight vessel 8, a pair of electrodes 9, external lead wires 10 and 11, and a discharge medium. The translucent airtight container 8 is made of quartz glass, and includes an enclosing portion 8a and a pair of sealing portions 8b and 8c. The surrounding portion 8a has a bulging shape and forms a discharge space inside. The sealing portions 8b and 8c have an elongated shape that extends in the axial direction from both ends of the surrounding portion 8a. The pair of electrodes 9 are sealed in the surrounding portion 8a so as to face each other with a space therebetween, and are supported by the sealing portions 8b and 8c. External lead-in line 10, 1
1 is derived from the pair of electrodes 9 via the sealing portions 8b and 8c.

The base B comprises a base body 12 and a high-potential side contact 1.
3 and the low potential side contact 14. The base 12 is
It is formed by molding an insulator and is supported by the sealing portion 8c of the translucent airtight container 8. Then, it is inserted into the lamp socket LS and mounted. The high-potential side contact 13 has a pin shape, and is arranged above the shaft of the discharge vessel DB inside the lower end recess 12a of the base body 12. Low potential side contact 14
Has a ring shape and is disposed on the peripheral side surface of the base body 12.

The oscillator circuit OSC includes capacitors C1 and C.
2. Discharge gap G and connector CN1. The capacitor C1 supplies electric charge for oscillation and is connected between the contacts a and b of the connector CN1. The discharge gap G has one end connected to the capacitor C1 and the other end connected to the other end of the primary winding 3 of the high-voltage transformer HPT. In addition,
The conductor 7b of the lamp socket LS is connected to the contact b of the connector CN1. The capacitor C2 is for a noise filter and is connected between the contacts b and c of the connector CN1. The low potential side end of the secondary winding 2 of the high voltage transformer HPT is connected to the contact c of the connector CN1. The connector CN1 is in a retracted position because the contact point a is shorter than the contact points b and c.

The cable FK has connectors CN on both ends.
2, equipped with CN3. The connector CN2 is connected to the connector CN1 of the oscillation circuit OSC. Connector CN3
Has contacts d, e, f and is connected to a connector CN4 of a lighting circuit LOC described later. The contact point d is at a position retracted from the contact points e and f.

The lighting circuit LOC includes booster circuits BUC and DC.
The AC conversion circuit CVC, the high voltage power supply HPS and the connector CN4. The step-up circuit BUC is a circuit for converting the voltage of the DC power supply DC into a DC voltage boosted as required, and is composed of a step-up chopper circuit and the like, and its input end is the DC power supply DC.
Connect to. The DC-AC conversion circuit CVC is a circuit that converts direct current into alternating current, and is composed of a full-bridge inverter or the like, and its input end is connected to the output end of the booster circuit BUC. The high-voltage power supply HPS is a circuit that receives the switching voltage of the booster circuit BUT and generates a sawtooth voltage.
Supply to C. The output voltage of the high voltage power supply HPS is detected by the booster circuit BUC. The connector CN4 forms the output end of the lighting circuit LOC, and supplies the AC output voltage of the DC-AC conversion circuit CVC and the sawtooth voltage of the high voltage power supply HPS to the high voltage generator HPG. Further, the lighting circuit LOC includes a control line g, the operation of which is controlled by an external lighting control switch via the control line g, and also includes a signal line h to output a connector abnormality warning output signal. It is configured to output.

Next, the connector abnormality will be described with reference to FIGS. 4 and 5. FIG. 4 shows different fitting states of the connectors CN1 and CN2, where (a) shows a normal mounting state, (b) shows an incomplete mounting state, and (c) shows an open state. In the case of the incompletely mounted state of (b), the contact a of the connector CN1 is in the retracted position as described above, so that it is in the open state, so that the high-voltage generator HPG's oscillation circuit OSC of FIG. The supply of the sawtooth voltage shown in is stopped. Therefore, the high pressure discharge lamp HPL cannot be turned on. The same applies to the open state of (c). In such an abnormal state, as shown in FIG. 5B, the sawtooth voltage supplied from the high-voltage power supply HPS increases, and when the sawtooth voltage exceeds a predetermined threshold value, the connector is connected to the signal line h. Output the error warning output signal. The relationship between the connectors CN3 and CN4 is the same as above. FIG. 6 is a perspective view showing a vehicle headlight device to which the high pressure discharge lamp device of the present invention is applied. The automobile headlight device includes a headlight body 21, a high-pressure discharge lamp device 22, and a lighting circuit L.
It consists of OC.

The headlight main body 21 is composed of a front transparent panel 21a, reflectors 21b and 21c, and the like. The front lens 21a has a shape matching the outer surface of the automobile and is provided with required optical means such as a prism. The reflectors 21b and 21c are provided for the respective high pressure discharge lamps DL, and are configured to obtain the light distribution characteristics required for each.

The high pressure discharge lamp device 22 comprises a high pressure discharge lamp HPL and a lamp mounting portion S. The high pressure discharge lamp HPL is the same as that shown in FIG. The lamp mounting portion S includes the lamp socket LS, the high voltage transformer HPT and the oscillation circuit OSC shown in FIG.

The lighting circuit LOC is housed in a metal container and the internal structure is the same as in FIG.

Thus, the two high-pressure discharge lamps DL are mounted on the headlight device main body 21 to form a four-light type headlight device. The light emitting portion of each high-pressure discharge lamp DL includes a reflector 21b of the headlight device main body 21,
It is located almost at the focal point of 21c.

[0054]

According to the invention of claim 1, it is possible to provide a high voltage transformer in which leakage of high voltage energy is suppressed.

According to the second aspect of the present invention, high voltage energy does not leak from the high withstand voltage cable, the high pressure discharge lamp for automobiles currently used can be mounted and is compatible, and the assembling is possible. It is possible to provide a high pressure discharge lamp device having excellent workability.

[Brief description of drawings]

FIG. 1 is a front sectional view of an essential part showing an embodiment of a high-voltage transformer and a high-pressure discharge lamp device of the present invention.

FIG. 2 is a plan sectional view of the same main part.

FIG. 3 is a circuit block diagram showing an embodiment of a high pressure discharge lamp device of the present invention together with a lighting circuit.

FIG. 4 is an explanatory view showing a connector attachment / detachment condition.

FIG. 5 is a conceptual waveform diagram showing an igniter output voltage.

FIG. 6 is a perspective view showing an automobile headlight device to which the high-pressure discharge lamp device of the present invention is applied.

FIG. 7 is a sectional view showing a conventional high voltage transformer.

[Explanation of symbols]

1 ... Core 1a ... the first core material 1a1 ... one leg 1a2 ... the other leg 1b ... second core material HPT ... High voltage transformer 2 ... Secondary winding LS ... Lamp socket G: Core gap 3 ... Primary winding 4 ... Insulation coating molded body 5… Lamp socket body 6 ... High potential side power supply contact

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01F 31/06 501H

Claims (2)

[Claims] 1. A first U-shaped section having a pair of legs.
Of the first core material and one leg portion of the first core material, one end of which is in contact with the other leg portion of the first core material, and the other end of which has an I-shape. A core having a second core material; a secondary winding wound around the second core material;
A primary winding wound on a second core material in a concentric relationship from above the secondary winding and spaced apart; a primary winding, a secondary winding and a second core With the exception of
A high-voltage transformer, comprising: a core gap-filling insulation molding formed between the first and second core materials; 2. A discharge container in which a pair of electrodes are sealed in a translucent airtight container and a discharge medium is sealed inside, and a base body is disposed at one end of the discharge container and is led out from the pair of electrodes of the discharge container inside. High-pressure discharge lamp having a base in which the high-potential-side power receiving contact and the low-potential-side power receiving contact are spaced apart from each other and disposed in a base body; a core; a secondary winding wound around the core;
High voltage provided with a primary winding which is spaced apart from the secondary winding and wound on the core from above, and an insulating coating molded body which surrounds at least a main part of the primary winding, the secondary winding and the core A transformer; an oscillating circuit for applying an oscillating output to the primary winding of a high-voltage transformer; a lamp socket body integrally formed with an insulating coating molded body, and a secondary winding penetrating the insulating coating molding A high-potential side power supply contact that is led out and disposed inside the lamp socket body and a low-potential side power supply contact to which a high voltage is applied between the high-potential side power supply contact and support the base of the high-pressure discharge lamp. A lamp socket in which the high-potential side power feeding contact is connected to the high-potential side power receiving contact, and the low-potential side power feeding contact is connected to the low-potential side power receiving contact;
A high-pressure discharge lamp device comprising: