JP3121595B1 - Socket and discharge lamp lighting device - Google Patents

Abstract

An object of the present invention is to provide a socket and a discharge lamp lighting device which take measures against vibration of each circuit component without increasing the cost. SOLUTION: A socket part 2 to which a discharge lamp is detachably connected to a socket body 1 of a socket A, and a connector part 3 to which an input line from a lighting control circuit for controlling a lighting state of the discharge lamp is connected. At the start of the discharge, a start-up circuit housing part 4 for housing a circuit component 6 constituting a circuit such as an igniter circuit for applying a high-voltage pulse necessary for starting the discharge to the discharge lamp is integrally formed. Here, the socket body 1 is provided with a holding member 7 that is arranged between the circuit components 6 housed in the start-up circuit housing 4 and holds the circuit components 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket and a discharge lamp lighting device.

[0002]

2. Description of the Related Art In recent years, as a light source of a headlight for an automobile, as a result of emphasizing safety, a discharge lamp (for example, an HID lamp such as a metal halide lamp, etc.) having higher luminance, lower power consumption and longer life than conventional halogen lamps has been developed. ) Came to be used. In such a discharge lamp, a high voltage of, for example, 13 kV or more is applied at the start of lighting in the case of an automotive headlamp. If provided externally,
Electromagnetic waves may be radiated to the surroundings from a high-voltage cable that electrically connects the starting circuit and the socket, and there is also a problem that wiring work of the high-voltage cable is difficult. Therefore, there has been provided a discharge lamp lighting device having a socket in which a starting circuit for applying a high-voltage pulse to a discharge lamp at the start of lighting is provided (for example, see JP-A-10-223005 and JP-A-11-87156). ).

[0003]

In the socket and the discharge lamp lighting device having the above-described structure, a plurality of circuit components such as a capacitor and a coil constituting a starting circuit are housed inside the socket body. The number of connection points for electrical connection between each circuit component increases,
There has been a problem that vibration or impact applied to the socket body is applied to the connection point, and the reliability of electrical contact at the connection point is reduced. Therefore, it is necessary to take measures against vibration of each circuit component. However, there is a problem that the man-hour for measures against vibration is increased and the cost is increased. For example, when molding a circuit component with a filling material, it is necessary to fill the inside of the socket body with the filling material until all the circuit components are hidden, and there has been a problem that a large amount of the filling material is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a socket and a discharge lamp lighting device in which each circuit component is protected against vibration without increasing the cost. Is to do.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a socket body provided with a socket portion to which a discharge lamp is mounted, and a lighting state of the discharge lamp is controlled. A housing for housing a plurality of circuit components including a connector portion to which an input line from a lighting control circuit is connected and a startup circuit for applying a high-voltage pulse required for starting discharge to the discharge lamp when the discharge lamp is started. The starter circuit housing part is provided integrally with the socket body, and the starting circuit housing part is provided with a holding member that is disposed between a plurality of circuit components and holds the circuit component, and the holding member is housed in the starting circuit housing part. Because it holds the circuit components that are mounted, the vibration applied to the electrical connection part of each circuit component due to the vibration and shock applied to the socket body can be reduced, and the reliability of the electrical contact of each circuit component can be improved. Can Therefore, it is not necessary to mold the entire circuit component with the filling material for the purpose of preventing vibration, and the amount of the filling material can be reduced, and the cost can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the starting circuit has a high voltage pulse generating means for generating a high voltage pulse, and the holding member is formed of an insulating material, and at least the high voltage pulse is applied. It is characterized by being arranged so as to surround the circuit components to be formed, and by surrounding the circuit components with a holding member formed of an insulating material, the insulation between the circuit components is improved, and the insulation distance is reduced. It is possible to prevent the socket main body from increasing in size in order to secure it.

According to a third aspect of the present invention, in the first aspect of the present invention, the holding member has a substantially lattice shape, is formed separately from the start-up circuit housing portion, and has a circuit in each region partitioned in a lattice shape. 2. The component according to claim 1, wherein the components are arranged.
The same effect as that of the invention is achieved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the starting circuit has a high-voltage pulse generating means for generating a high-voltage pulse, and the starting circuit storage section is provided with a space in which the high-voltage pulse generating means is stored and a high-voltage pulse. A partition is provided on the holding member to partition into a space in which circuit components other than the generating means are stored, and the partition stores the space in which the high-voltage pulse generating means is stored and the circuit components other than the high-voltage pulse generating means. The space between the high-voltage pulse generating means and the other circuit components is improved, and the socket body can be prevented from being enlarged to secure an insulation distance.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the holding member is formed integrally with at least one of the starting circuit housing portion, the connector portion, and the socket body. It is possible to reduce the time and labor for assembling.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the starting circuit accommodating portion, the connector portion, the socket body, and the holding member are integrally formed, and the number of parts is reduced to assemble. Labor can be reduced.

According to a seventh aspect of the present invention, in the first aspect of the invention, at least one of the circuit components constituting the starting circuit is provided.
The present invention is characterized in that a lead frame to which the two are joined is provided, and has the same effect as the first aspect of the present invention.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the starting circuit has at least a capacitor, and the capacitor is formed by potting a pair of lead frames facing each other with a predetermined gap therebetween with a resin. The capacitor is formed by potting a pair of lead frames facing each other with a predetermined gap with resin, so that the capacitor can be stored individually compared to the case where packaged parts are used. Since the case described above is eliminated, the size of parts can be reduced, and the size of the entire socket can be reduced.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, the starting circuit has at least a coil, and the coil is formed by processing a lead frame into a coil shape. Since the coil is formed by processing into a coil shape, there is no need for a separate case to house the capacitor, compared to using packaged components. The size can be reduced.

According to a tenth aspect of the present invention, in the first aspect of the present invention, the starting circuit has a pulse transformer for generating a high-voltage pulse, and the pulse transformer is partially cut away and substantially C-shaped.
A core formed in the shape of a letter, a primary winding and a secondary winding are wound around the core, and an insulating wall inserted into a cutout portion of the core is provided in a start-up circuit housing portion. A high-voltage pulse is generated in the secondary winding of the transformer, but the insulation between the two ends of the secondary winding is insulated. It is possible to prevent an increase in size.

According to an eleventh aspect of the present invention, in the first aspect, the socket portion has a connection terminal to which an electrode of the discharge lamp is connected, and has an insulating wall covering a portion of the connection terminal projecting into the starting circuit housing portion. The connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, so that the insulation between the connection terminal and the circuit components arranged in the start-up circuit housing is improved. However, it is possible to prevent the socket main body from being enlarged in order to secure the insulation distance.

According to a twelfth aspect of the present invention, the connector has a socket body provided with a socket for mounting a discharge lamp, and a connector to which an input line from a lighting control circuit for controlling a lighting state of the discharge lamp is connected. A starting circuit housing part for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starting circuit for applying a high-voltage pulse necessary for starting discharge to the discharge lamp when starting the discharge lamp is integrated with the socket body. Provided separately, a holding member that holds the circuit components disposed between the plurality of circuit components in the start-up circuit housing portion is provided separately from the start-up circuit housing portion, and the holding member is formed in a substantially lattice shape from an insulating material, It has a partition for partitioning the starting circuit housing part into a space in which the pulse transformer is housed and a space in which circuit parts other than the pulse transformer are housed, and at least around the circuit parts to which high-voltage pulses are applied And useless, circuit components is partitioned in a lattice-like holding member regions are arranged,
The pulse transformer is configured by winding a primary winding and a secondary winding around a core partially cut out and formed in a substantially C shape, and includes an insulating wall inserted into a cutout portion of the core. It is provided in the starting circuit housing portion, the socket portion has a connection terminal to which the electrode of the discharge lamp is connected, and a cylindrical insulating wall surrounding the connection terminal is provided integrally with the socket body. Since the holding member holds the circuit components housed in the starting circuit housing portion, vibration applied to the electrical connection portion of each circuit component due to vibration or impact applied to the socket body can be reduced, and each circuit component can be reduced. The reliability of electrical contact can be improved. Therefore, it is not necessary to mold the entire circuit component with the filling material for the purpose of preventing vibration, and the amount of the filling material can be reduced, and the cost can be reduced. Moreover, by surrounding the circuit components with a holding member formed of an insulating material, insulation between the circuit components is improved,
Further, the partition partitions the space in which the pulse transformer is housed from the space in which circuit components other than the pulse transformer are housed, so that the insulation between the pulse transformer and other circuit parts is improved. In order to secure the distance, it is possible to prevent the socket body from becoming large. A high voltage pulse is generated in the secondary winding of the pulse transformer, but the insulation between the two ends of the secondary winding is insulated, so a socket is required to secure the insulation distance between both ends of the secondary winding. The main body can be prevented from increasing in size, and the connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, so that the insulation between the connection terminal and the circuit components arranged in the start-up circuit housing is improved. However, it is possible to prevent the socket main body from being enlarged in order to secure the insulation distance.

According to the thirteenth aspect of the present invention, a discharge lamp, a socket in which the discharge lamp is mounted, a lighting control circuit for supplying power to the discharge lamp through the socket and controlling a lighting state of the discharge lamp, A starting circuit for applying a high-voltage pulse necessary for starting discharge to the discharge lamp at the time of starting, the socket includes a socket body provided with a socket portion to which the discharge lamp is detachably mounted, and a lighting control circuit. A connector portion to which the input line is connected, and a starting circuit housing portion for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starting circuit are integrally provided in the socket body, and the starting circuit housing portion includes A holding member arranged between the plurality of circuit components and holding the circuit component is provided separately from the start-up circuit housing portion. Having a partition for partitioning into a space in which a circuit component other than a pulse transformer is stored and a space in which a high-voltage pulse is applied, so as to surround at least a circuit component to which a high-voltage pulse is applied, and a grid-shaped region of the holding member The pulse transformer is configured by winding a primary winding and a secondary winding around a partially cutout and substantially C-shaped core. An insulating wall inserted into the cutout portion is provided in the starting circuit housing portion, and the socket portion has a connection terminal to which an electrode of the discharge lamp is connected, and a cylindrical insulating wall surrounding the connection terminal is provided in the socket. It is characterized by being provided integrally with the main body, and the holding member holds the circuit components housed in the start-up circuit housing part, so that vibrations and shocks applied to the socket body make it possible to connect to the electrical connection parts of each circuit part. Add vibration Reduction can be realized discharge lamp lighting device with improved reliability of the electrical contact of each circuit component. Therefore, there is no need to mold the entire circuit component with the filling material for the purpose of preventing vibration, and the amount of the filling material can be reduced, and the cost of the discharge lamp lighting device can be reduced. In addition, by surrounding the circuit components with a holding member made of an insulating material, the insulation between the circuit components is improved, and the partition walls accommodate the space where the pulse transformer is stored and the circuit components other than the pulse transformer. The space between the pulse transformer and the other circuit components is improved because it is separated from the space to be used. The high voltage pulse is generated in the secondary winding, but the insulation wall insulates between both ends of the secondary winding, so the socket body is large to secure the insulation distance between both ends of the secondary winding. Can be prevented, and
Since the connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, the insulation between the connection terminal and the circuit components arranged in the start-up circuit housing is improved, and the socket body is used to secure the insulation distance. Because it can be prevented from becoming larger,
The size of the discharge lamp lighting device can be reduced.

[0018]

(Embodiment 1) A socket and a discharge lamp lighting device according to this embodiment will be described with reference to FIGS. 1 to 11 and FIGS. This discharge lamp lighting device is applied to a lighting device for a vehicle headlamp. As shown in FIG. 16, a DC power source E is supplied with power from the DC power source E via a switch SW. A lighting control circuit 30 comprising an inverter circuit for converting the DC voltage of the discharge lamp into a high-frequency AC voltage and outputting the same to a discharge lamp (for example, an HID lamp such as a metal halide lamp) LP through a socket A; An igniter circuit (starting circuit) 31 for applying a high-voltage pulse necessary for starting to the discharge lamp LP is provided. Here, an igniter circuit 31 and a noise filter F are housed inside the socket A, and a socket 2 to which the discharge lamp LP is detachably connected and a connector to which an input line from the lighting control circuit 30 is connected. 3 and a starting circuit storage unit 4 that stores the circuit components 6 that constitute the igniter circuit 31 and the noise filter F are integrally formed. In the present embodiment, the socket body 2, the connector part 3, and the starting circuit housing part 4 are integrally formed to form the socket body 1, so that the number of parts can be reduced and the labor for assembling can be reduced. The socket part 2, the connector part 3, and the starting circuit storage part 4 may be formed separately and attached integrally to the socket body 1.

FIG. 18 shows a discharge lamp L connected to the socket A.
It is an external view of P. In the lamp body 50 of the discharge lamp LP,
A substantially cylindrical engaged portion 5 to be engaged with the engaging portion of the socket A
1 is provided, and an engaging pin 52 is protruded from a peripheral surface of the engaged portion 51. A substantially cylindrical fitting portion 53 that fits into the fitting recess 2b of the socket A is provided on an end surface of the engaged portion 51. A circular recess 54 is formed in the end face of the fitting portion 53, and the central electrode 5 is formed in the circular recess 54.
5 are provided. An annular outer peripheral electrode 56 is provided on the peripheral surface of the fitting portion 53.

The socket 2 of the socket A has a central electrode t connected to the central electrode 55 of the discharge lamp LP as a main electrode.
21 and an outer electrode t22 connected to the outer electrode 56 of the discharge lamp LP. Further, the outer electrode 56 of the discharge lamp LP is provided at a position substantially opposed to the outer electrode t22 with the center electrode t21 interposed therebetween. An auxiliary electrode t23 to be connected is provided. When the discharge lamp LP is connected to the socket A, the auxiliary electrode t23 and the auxiliary electrode t23 are connected to each other via the outer peripheral electrode 56 of the discharge lamp LP.

FIG. 17 shows an internal circuit diagram of the socket A. The igniter circuit 31 includes a pulse transformer PT and an igniter main circuit 32 for generating a high-voltage pulse on the secondary side of the pulse transformer PT. The igniter main circuit 32 is connected between the input terminals t11 and t12 of the connector unit 3. A capacitor CS, a parallel circuit of a capacitor CC and a resistor RD connected between the input terminal t13 and the auxiliary electrode t23 of the connector unit 3, and a primary winding of the pulse transformer PT between the input terminal t13 and the auxiliary electrode t23. , And a discharge gap SG connected thereto. Here, one end of the secondary winding of the pulse transformer PT is connected to the input terminal t12. The noise filter F includes a coil L connected between the input terminal t11 and the outer peripheral electrode t22.
F1, a coil LF2 connected between the other end of the secondary winding of the pulse transformer PT and the center electrode t21, and an electrode t2.
1 and a capacitor CF connected between t22.

The operation of the igniter circuit 31 will be described briefly. When the switch SW is turned on, the switch SW
When the DC voltage of the DC power supply E is supplied to the lighting control circuit 30 through the, the capacitor CS is charged to about 380 V by the output of the lighting control circuit 30. Here, the input terminal t1
When a voltage of about 600 V is applied between t2 and t13, the voltage across the capacitor CC becomes about 980 V, the discharge gap SG is discharged, and a high-voltage pulse is generated on the secondary side of the pulse transformer PT, and the discharge lamp LP Is applied to the discharge lamp LP, and the discharge lamp LP starts discharging. When the discharge lamp LP starts discharging, the igniter circuit 31 stops outputting the high-voltage pulse, and the lighting state of the discharge lamp LP is maintained by the output of the lighting control circuit 30.

Next, the structure of the socket A will be described.
The socket body 1 of the socket A is formed of a resin molded product formed of a synthetic resin having an insulating property and has a substantially box-shaped starting circuit housing portion 4 which is open on one side. Is provided with a bottomed cylindrical pulse transformer housing 4a. Each of the cylindrical connector portions 3 is provided on one side surface of the starting circuit housing portion 4, and a fitting recess 2 b into which the fitting portion 53 of the discharge lamp LP is inserted is provided on the bottom surface of the pulse transformer housing portion 4 a. A provided socket unit 2 is provided.

In the connector section 3, input terminals t11 to t13 are respectively arranged so as to face the opening of the connector section 3. In the socket section 2, the electrodes 55 and 5 of the discharge lamp LP are provided.
Each of the electrodes t21 to t23 is arranged in such a manner that a portion contacting with No. 6 faces the inside of the fitting recess 2b. The socket 2 is provided with a plurality of slits 2a which are open to the open end of the socket 2. The positions of the engaging pins 52 of the discharge lamp LP and the slits 2a are adjusted to form the discharge lamp LP.
Into the fitting recess 2b of the socket part 2,
When the discharge lamp LP is rotated, the engagement pin 52 and the slit 2
a is engaged, and the discharge lamp LP is held in the socket portion 2. At this time, the center electrode 55 of the discharge lamp LP is
And the outer peripheral electrode 56 of the discharge lamp LP is electrically connected to the outer peripheral electrode t22 and the auxiliary electrode t23 of the socket 2.

Here, on the socket body 1, a holding member 7 which is disposed between the igniter main circuit 32 and the circuit components 6 of the noise filter F and holds each circuit component 6 is detachably attached. The holding member 7 has a substantially lattice shape, and the circuit components 6 are arranged in respective regions partitioned in a lattice shape. The wall surface of the holding member 7 and the starting circuit storage section 4
A projection 8 is provided on the inner wall of the circuit component 6. When the circuit component 6 is incorporated in the start-up circuit housing portion 4, the projection 8 comes into contact with the surface of the circuit component 6 and the circuit component 6 is held.
Even if vibrations or shocks are applied, mechanical stress is prevented from being applied to a connection portion between the circuit component 6 and a lead frame 5 described later, and the reliability of electrical contact is improved. Therefore, even when each of the circuit components 6 is molded with a filling material to prevent vibration, it is not necessary to fill the inside of the socket body 1 with the filling material until all the circuit components 6 are hidden. Thus, costs can be reduced. Further, since the holding member 7 is formed of an insulating synthetic resin, the holding member 7 is formed around each circuit component 6.
By enclosing them, it is possible to insulate the circuit components 6 from each other.

The pulse transformer PT is accommodated in the pulse transformer accommodating section 4a, and the circuit components 6 of the igniter main circuit 32 are accommodated in the starting circuit accommodating section 4. As shown in FIGS. 9A and 9B, the pulse transformer PT has a core 9 formed in a substantially C shape by cutting out a part of a substantially annular magnetic material. The primary winding 11a is wound, for example, five turns from above the insulating tape 10, and the secondary winding 11b is further wound from above the primary winding 11a.
Is wound, for example, for 160 turns. This pulse transformer PT includes a primary winding 1 on a core 9 whose surface is insulated.
Since the coil 1a and the secondary winding 11b are wound and no coil bobbin is provided, the pulse transformer PT can be reduced in size by the coil bobbin, and the entire socket A can be reduced in size. In addition, both ends of the secondary winding 11b are drawn out from both sides of the cutout 9b provided in the core 9.

The pulse transformer PT includes a starting circuit housing 4
The end of the central electrode t21 protruding inward is passed through the hole 9a of the core 9 and housed in the pulse transformer housing 4a. Here, as shown in FIGS. 7 and 8, the socket body 1 has a central electrode t protruding into the activation circuit housing 4.
Since a columnar insulating wall 13 covering the periphery of the portion 21 is projected, and the insulating wall 13 covers the center electrode t21, the central electrode t21 and the circuit component 6 of the igniter circuit 31 and the noise filter F Insulation distance between them can be secured, and the socket body 1 does not increase in size to secure the insulation distance. As shown in FIGS. 10 and 11, the socket body 1 is provided with a rib 12 which is inserted into the cutout 9b of the core 9, and when the pulse transformer PT is incorporated into the pulse transformer housing 4a, Notch 9b
The rib 12 enters the inside of the secondary winding 1.
Both ends of the secondary winding 1b (that is, an end on the winding start side and an end on the winding end side of the secondary winding 11b) are insulated from each other. As described above, when the discharge lamp LP is started, a high-voltage pulse is generated on the secondary side of the pulse transformer PT. However, since both ends of the secondary winding 11b are insulated by the rib 12, both ends of the secondary winding 11b are insulated. The socket body 1 does not become large in size to secure the insulation distance between them.

As shown in FIG. 4, the circuit components 6 of the igniter circuit 31 and the filter circuit F, the input terminals t11 to t13, and the electrodes t21 to t23
A plurality of lead frames 5 to which are electrically connected are stored. Each lead frame 5 constitutes an electric circuit of the above-described circuit of FIG. 17, and as shown in FIGS. 5 and 6, the igniter circuit 31 and the circuit components 6 of the noise filter F and the input terminal t11 are provided. ~ T13
By connecting the electrodes t21 to t23 by, for example, welding, the circuit of FIG. 17 described above is formed. still,
In the present embodiment, the lead frame 5 and the input terminals t11 to t11
13 and each of the electrodes t21 to t23 are formed separately and connected. By pressing a conductive sheet metal, the lead frame 5, the input terminals t11 to t13, and the electrodes t21 to t23 are connected to each other. They may be formed integrally. Further, the lead frame 5, the input terminals t11 to t13, and the respective electrodes t2
1 to t23 may be molded simultaneously with the socket body 1, or after the simultaneous molding, each circuit component 6 may be press-fitted or fitted into the socket body 1 to connect each circuit component 6 to the lead frame 5. May be.

(Embodiment 2) In this embodiment, in the socket A of Embodiment 1, as shown in FIG. 12, a partition wall 7a forming the bottom surface of each area partitioned in a grid is integrally formed with the holding member 7. And the holding member 7 is attached to the socket body 1.
When it is incorporated in the inside, the inside of the starting circuit housing section 4 is partitioned into a space in which the pulse transformer PT is housed and a space in which the circuit components 6 other than the pulse transformer PT are housed by the partition wall 7a. Insulation between the circuit component 6 is improved, and the socket body 1 can be prevented from increasing in size to secure an insulation distance. Since the configuration other than the holding member 7 is the same as that of the first embodiment, only different portions will be described.

Here, when assembling the holding member 7 into the socket body 1, the pulse transformer PT is first installed into the pulse transformer housing 4a, and the holding member 7 is partitioned into a lattice shape as shown in FIG. The circuit components 6 may be attached to the area, and the lead frames 5 may be connected to the respective circuit components 6 to form a block.
To t13, each electrode t21 to t23 and the pulse transformer P
What is necessary is just to electrically connect with T.

As described above, if the circuit component 6 and the lead frame 5 incorporated in the holding member 7 are connected in advance to form a block, a circuit block is formed, and this circuit block is incorporated in the socket body 1. The number of connection points for electrically connecting between the circuit block and the socket body 1 is reduced as compared with the case where the circuit components 6 are individually incorporated in the socket body 1, so that the reliability of the electrical contact between the connection points is improved. I do.

(Embodiment 3) In the present embodiment, in the socket A of the embodiment 1 or 2, coils and capacitors constituting the igniter circuit 31 and the noise filter F are formed using the lead frame 5. Note that the basic configuration of the socket A is the same as that of the socket A of the first or second embodiment, and a description thereof will be omitted.

As shown in FIG. 14, a region 15 surrounded by a partition wall 14 is provided in the socket body 1, and a pair of lead frames 5 and 5 are arranged in the region 15 with a predetermined gap therebetween. Is filled with a filling resin 16 such as silicon having an increased dielectric constant, thereby forming a capacitor with the lead frames 5 and 5 and the filling resin 16. still,
The hatched portion in FIG. 14 indicates a portion filled with the filling resin 16.

As shown in FIGS. 15A to 15C,
A wide coil portion 5a is provided on the lead frame 5, a plurality of cuts 5b are alternately formed from both sides of the coil portion 5a, and a plurality of strips 5c connected in a meandering manner are provided. Is expanded (see FIG. 15B), and each of the strips 5c is deformed into a substantially circular arc shape in cross section, so that each of the strips 5c is deformed.
Are projected alternately on both sides in the thickness direction to form a coil.

As described above, since the capacitor and the coil are formed using the lead frame 5, an individual case for accommodating each component is not required as compared with the case where components packaged in the capacitor and the coil are used. Therefore, the size of the components can be reduced, and the size of the entire socket A can be reduced.

By the way, in the socket A of each embodiment described above, the holding member 7 is formed separately from the socket body 1, but the holding member 7 may be formed integrally with the socket body 1, And the labor of assembling can be reduced. In this case, the lead frame 5, the input terminals t11 to t13, the respective electrodes t21 to t23, and the pulse transformer PT are simultaneously molded with the socket main body 1, and then the circuit components 6 are incorporated in the starting circuit housing 4. Good.

[0037]

As described above, according to the first aspect of the present invention, the input line from the lighting control circuit for controlling the lighting state of the discharge lamp has the socket body provided with the socket portion to which the discharge lamp is mounted. And a starter circuit housing that houses multiple circuit components of a circuit including a starter circuit that applies a high-voltage pulse required to start discharge to the discharge lamp when the discharge lamp is started. The starting circuit housing portion is provided with a holding member that is disposed between the plurality of circuit components and holds the circuit component, wherein the holding member holds the circuit component housed in the starting circuit housing portion. As a result, vibration applied to the electrical connection of each circuit component due to vibration or shock applied to the socket body can be reduced, and the effect of improving the reliability of electrical contact of each circuit component is improved. For circuit components Since necessary to mold the body with a filler material is not, can reduce the amount of fill material, there is also an effect that costs can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the starting circuit has high-voltage pulse generating means for generating a high-voltage pulse, and the holding member is formed of an insulating material;
It is characterized by being arranged so as to surround at least the circuit component to which the high-voltage pulse is applied, and by surrounding the circuit component with a holding member formed of an insulating material, insulation between the circuit components is improved. Thus, there is an effect that the size of the socket body can be prevented from increasing in size to secure the insulation distance.

According to a third aspect of the present invention, in the first aspect of the present invention, the holding member has a substantially lattice shape, is formed separately from the start-up circuit housing portion, and has a circuit in each region partitioned in a lattice shape. The components are arranged respectively, and the same effect as the first aspect of the invention is obtained.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the starting circuit has a high-voltage pulse generating means for generating a high-voltage pulse, and the starting circuit accommodating portion is provided with a space in which the high-voltage pulse generating means is accommodated and A partition is provided on the holding member to partition into a space in which circuit components other than the generating means are stored, and the partition stores the space in which the high-voltage pulse generating means is stored and the circuit components other than the high-voltage pulse generating means. The space between the high-voltage pulse generating means and the other circuit components is improved, and the socket body is prevented from being enlarged to secure the insulation distance. .

According to a fifth aspect of the present invention, in the first aspect of the present invention, the holding member is formed integrally with at least one of the starting circuit accommodating portion, the connector portion, and the socket body. There is an effect that it is possible to reduce the time and labor for assembling.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the starting circuit accommodating portion, the connector portion, the socket body, and the holding member are integrally formed, and the number of parts is reduced to assemble. This has the effect of reducing the time and effort of the user.

According to a seventh aspect of the present invention, in the first aspect of the present invention, a lead frame to which at least one of the circuit components constituting the starting circuit is joined is provided.
The same effect as that of the first aspect is obtained.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, the starting circuit has at least a capacitor, and the capacitor is formed by potting a pair of lead frames facing each other with a predetermined gap therebetween using a resin. The capacitor is formed by potting a pair of lead frames facing each other with a predetermined gap with resin, so that the capacitor can be stored individually compared to the case where packaged parts are used. Since the case is eliminated, the size of the components can be reduced, and the size of the entire socket can be reduced.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, the starting circuit has at least a coil, and the coil is formed by processing a lead frame into a coil shape. Since the coil is formed by processing into a coil shape, there is no need for a separate case to house the capacitor, compared to using packaged components. There is an effect that the size can be reduced.

According to a tenth aspect of the present invention, in the first aspect of the present invention, the starting circuit has a pulse transformer for generating a high-voltage pulse, and the pulse transformer is partially cut away to form a substantially C-shaped core. In addition, the primary winding and the secondary winding are configured to be wound, and an insulating wall inserted into the cutout portion of the core is provided in the start-up circuit housing portion, and the secondary winding of the pulse transformer is Generates a high-voltage pulse, but because the insulating walls insulate the ends of the secondary winding from each other, it is possible to prevent the socket body from increasing in size to secure an insulation distance between the ends of the secondary winding. This has the effect.

According to an eleventh aspect of the present invention, in the first aspect, the socket portion has a connection terminal to which an electrode of the discharge lamp is connected, and has an insulating wall covering a portion of the connection terminal projecting into the starting circuit housing portion. The connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, so that the insulation between the connection terminal and the circuit components arranged in the start-up circuit housing is improved. However, there is an effect that it is possible to prevent the socket body from increasing in size in order to secure the insulation distance.

According to a twelfth aspect of the present invention, there is provided a connector having a socket body provided with a socket for mounting a discharge lamp, the connector being connected to an input line from a lighting control circuit for controlling a lighting state of the discharge lamp. A starting circuit housing part for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starting circuit for applying a high-voltage pulse necessary for starting discharge to the discharge lamp when starting the discharge lamp is integrated with the socket body. Provided separately, a holding member that holds the circuit components disposed between the plurality of circuit components in the start-up circuit housing portion is provided separately from the start-up circuit housing portion, and the holding member is formed in a substantially lattice shape from an insulating material, A partition for partitioning the starting circuit storage space into a space in which the pulse transformer is stored and a space in which circuit components other than the pulse transformer are stored, and surrounds at least a circuit component to which a high-voltage pulse is applied. And so, circuit components is partitioned in a lattice-like holding member regions are arranged,
The pulse transformer is configured by winding a primary winding and a secondary winding around a core partially cut out and formed in a substantially C shape, and includes an insulating wall inserted into a cutout portion of the core. It is provided in the starting circuit housing portion, the socket portion has a connection terminal to which the electrode of the discharge lamp is connected, and a cylindrical insulating wall surrounding the connection terminal is provided integrally with the socket body. Since the holding member holds the circuit components housed in the starting circuit housing portion, vibration applied to the electrical connection portion of each circuit component due to vibration or impact applied to the socket body can be reduced, and each circuit component can be reduced. This has the effect of improving the reliability of electrical contact, and it is not necessary to mold the entire circuit component with a filler material for anti-vibration measures, so that the amount of filler material can be reduced and costs can be reduced. There is also an effect.

Furthermore, by surrounding the circuit components with a holding member formed of an insulating material, the insulation between the circuit components is improved. Further, the partition accommodates a space in which the pulse transformer is housed and a circuit other than the pulse transformer. Since the space where the components are stored is partitioned, the insulation between the pulse transformer and other circuit components is improved, so that it is possible to prevent the socket body from being enlarged to secure the insulation distance. effective. A high voltage pulse is generated in the secondary winding of the pulse transformer, but the insulation between the two ends of the secondary winding is insulated, so a socket is required to secure the insulation distance between both ends of the secondary winding. The main body can be prevented from increasing in size, and the connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, so that the insulation between the connection terminal and the circuit components arranged in the start-up circuit housing is improved. However, there is an effect that it is possible to prevent the socket body from increasing in size in order to secure the insulation distance.

According to a thirteenth aspect of the present invention, there is provided a discharge lamp, a socket in which the discharge lamp is mounted, a lighting control circuit for supplying power to the discharge lamp via the socket and controlling a lighting state of the discharge lamp,
A starting circuit for applying a high-voltage pulse necessary for starting discharge to the discharge lamp at the time of starting the discharge lamp, the socket comprising a socket body provided with a socket portion to which the discharge lamp is detachably mounted; A starter circuit integrally provided with a connector portion to which an input line from a control circuit is connected, and a starter circuit housing portion for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starter circuit; A holding member that is arranged between the plurality of circuit components and holds the circuit component is provided separately from the starting circuit housing portion in the housing portion, and the holding member is formed in an approximately lattice shape from an insulating material, and the starting circuit housing portion is pulsed. It has a partition partitioning into a space in which the transformer is stored and a space in which circuit components other than the pulse transformer are stored,
The circuit components are arranged in at least a grid-shaped region of the holding member so as to surround at least the circuit components to which the high-voltage pulse is applied, and the pulse transformer is partially cut away to be substantially C-shaped. A primary winding and a secondary winding are wound around a core formed in the starting circuit housing, and an insulating wall inserted into a cutout portion of the core is provided in a starting circuit housing portion. It has a connection terminal to which an electrode is connected, and a cylindrical insulating wall surrounding the connection terminal is provided integrally with the socket body, and the holding member is a circuit component housed in the starting circuit housing part. Holding
Vibration applied to the electrical connection of each circuit component due to vibration or shock applied to the socket body can be reduced, and a discharge lamp lighting device with improved reliability of electrical contact of each circuit component can be realized. . Therefore, it is not necessary to mold the entire circuit component with the filling material for the purpose of preventing vibrations, so that the amount of the filling material can be reduced and the cost of the discharge lamp lighting device can be reduced.

Furthermore, by surrounding the circuit components with a holding member formed of an insulating material, the insulation between the circuit components is improved. Further, the partition accommodates a space for accommodating the pulse transformer and a circuit other than the pulse transformer. Since the space where the components are stored is separated, the insulation between the pulse transformer and other circuit components is improved, so that it is possible to prevent the socket body from increasing in size to secure the insulation distance, A high voltage pulse is generated in the secondary winding of the pulse transformer, but the insulation between the two ends of the secondary winding is insulated, so a socket is required to secure the insulation distance between both ends of the secondary winding. Since the main body can be prevented from increasing in size, and the connection terminal to which the high-voltage pulse is applied is covered by an insulating wall, the insulation between the connection terminal and the circuit components arranged in the start-up circuit storage section is provided. There was improved, there because the socket body can be prevented from increasing in size in order to secure an insulation distance, the effect that it is possible to reduce the size of the discharge lamp lighting device.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a socket according to a first embodiment.

FIG. 2 is an exploded perspective view of the socket.

FIG. 3 is an enlarged sectional view of a main part of the socket.

FIG. 4 is a diagram illustrating an arrangement state of circuit components of the socket according to the first embodiment.

FIG. 5 is a diagram illustrating an arrangement state of a lead frame of the socket according to the embodiment.

FIG. 6 is a top view in which a part of the socket is omitted.

FIG. 7 is an external perspective view of a socket body used for the socket.

FIG. 8 is a sectional view of a socket body used for the socket.

9A and 9B show a pulse transformer used for the socket, and FIG. 9A is a front view in which a part is omitted, and FIG. 9B is a cross-sectional view in which a part is omitted.

FIG. 10 is an external perspective view of the socket, in which the socket is partially omitted.

FIG. 11 is a top view in which a part of the socket is omitted.

FIG. 12 is an external perspective view of a holding member used for the socket according to the second embodiment.

FIG. 13 is an explanatory view showing a state where circuit components are incorporated in the holding member according to the first embodiment.

FIG. 14 is an enlarged perspective view of a main part of a socket according to a third embodiment.

FIGS. 15A to 15C are explanatory diagrams illustrating a coil used in the socket of the above.

FIG. 16 is a block diagram of the discharge lamp lighting device according to the first embodiment.

FIG. 17 is an internal circuit diagram of the socket.

FIGS. 18A and 18B show a discharge lamp used in the above, wherein FIG. 18A is a front view and FIG. 18B is a bottom view.

[Explanation of symbols]

 A Socket 1 Socket body 2 Socket section 3 Connector section 4 Starting circuit storage section 6 Circuit parts 7 Holding member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60Q 1/04 F21S 8/10 F21V 19/00 H01R 33/02 H01R 33/46 H01R 33/945 H05B 41 / 02

Claims (13)

(57) [Claims] A connector for connecting an input line from a lighting control circuit for controlling a lighting state of the discharge lamp, the connector having a socket body provided with a socket for mounting the discharge lamp; At the same time, a starting circuit storage unit that stores a plurality of circuit components of a circuit including a starting circuit that applies a high-voltage pulse necessary for starting discharge to a discharge lamp is provided integrally with the socket body,
A socket characterized in that a starting member is provided between a plurality of circuit components and a holding member for holding the circuit components is provided in the starting circuit storage part. A starting circuit having a high-voltage pulse generating means for generating a high-voltage pulse, wherein the holding member is formed of an insulating material and is disposed so as to surround at least a circuit component to which the high-voltage pulse is applied; The socket according to claim 1, wherein 3. The holding member has a substantially lattice shape, is formed separately from the start-up circuit housing portion, and circuit components are arranged in respective regions partitioned in a lattice shape. Item 7. The socket according to Item 1. 4. The starting circuit has a high-voltage pulse generating means for generating a high-voltage pulse, and the starting circuit storage section has a space for storing the high-voltage pulse generating means and a space for storing circuit components other than the high-voltage pulse generating means. 4. The socket according to claim 3, wherein a partition wall is provided on the holding member. 5. The socket according to claim 1, wherein the holding member is formed integrally with at least one of the starting circuit housing, the connector, and the socket body. 6. The socket according to claim 1, wherein the starting circuit housing, the connector, the socket body, and the holding member are integrally formed. 7. The socket according to claim 1, further comprising a lead frame to which at least one of the circuit components constituting the starting circuit is joined. 8. The starting circuit has at least a capacitor,
8. The socket according to claim 7, wherein the capacitor is formed by potting a pair of lead frames facing each other with a predetermined gap therebetween using a resin. 9. The socket according to claim 7, wherein the starting circuit has at least a coil, and the coil is formed by processing a lead frame into a coil shape. 10. A starting circuit includes a pulse transformer for generating a high-voltage pulse. The pulse transformer has a primary winding and a secondary winding wound on a core, which is partially cut out and formed in a substantially C shape. 2. The socket according to claim 1, wherein the starting circuit housing is provided with an insulating wall that is formed by turning and inserted into the cutout of the core. 11. The socket portion has a connection terminal to which an electrode of the discharge lamp is connected, and an insulating wall covering a portion of the connection terminal projecting into the starting circuit housing portion is provided integrally with the socket body. The socket according to claim 1. 12. A connector section having a socket body provided with a socket section to which a discharge lamp is mounted, to which an input line from a lighting control circuit for controlling a lighting state of the discharge lamp is connected.
A starting circuit housing part for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starting circuit for applying a high-voltage pulse required for starting discharge to the discharge lamp when starting the discharge lamp is integrated with the socket body. And a holding member arranged between the plurality of circuit components and holding the circuit components in the start-up circuit housing portion is provided separately from the start-up circuit housing portion, and the holding member is formed in a substantially lattice shape from an insulating material. A partition for partitioning the circuit housing portion into a space in which the pulse transformer is housed and a space in which circuit components other than the pulse transformer are housed,
The circuit components are arranged in at least a grid-shaped region of the holding member so as to surround at least the circuit components to which the high-voltage pulse is applied, and the pulse transformer is partially cut away to be substantially C-shaped. A primary winding and a secondary winding are wound around a core formed in the starting circuit housing, and an insulating wall inserted into a cutout portion of the core is provided in a starting circuit housing portion. A socket comprising a connection terminal to which an electrode is connected, and a cylindrical insulating wall surrounding the connection terminal provided integrally with the socket body. 13. A discharge lamp, a socket in which the discharge lamp is mounted, a lighting control circuit for supplying power to the discharge lamp through the socket and controlling a lighting state of the discharge lamp, and starting discharge when the discharge lamp is started. And a starter circuit for applying a high-voltage pulse necessary for the discharge lamp to the discharge lamp, the socket includes a socket body provided with a socket portion to which the discharge lamp is detachably mounted, and an input line from a lighting control circuit is connected. A connector part and a starting circuit housing part for housing a plurality of circuit components including at least a pulse transformer constituting a circuit including a starting circuit are integrally provided in the socket body, and the starting circuit housing part has a plurality of circuit parts. A holding member that holds a circuit component and is provided between the starting circuit housing and the starting circuit housing is provided separately.The holding member is formed in a substantially lattice shape from an insulating material, and the starting circuit housing is provided with a space in which the pulse transformer is housed. It has a partition partitioning into a space in which circuit components other than the ruth transformer are housed, and each of the circuit components is arranged in a grid-shaped region of the holding member so as to surround at least a circuit component to which a high-voltage pulse is applied. The pulse transformer is configured by winding a primary winding and a secondary winding around a partially cutout and substantially C-shaped core, and inserted into a cutout portion of the core. The socket portion has a connection terminal to which an electrode of the discharge lamp is connected, and a cylindrical insulating wall surrounding the connection terminal is provided integrally with the socket body. Discharge lamp lighting device characterized by the above-mentioned.