JP3684883B2 - Discharge lamp lighting fixture and discharge lamp socket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge lamp lighting fixture such as a vehicular lamp and a discharge lamp socket for preventing the influence of electromagnetic waves in a lamp using a discharge bulb of an automobile HID lamp as a light source.
[0002]
[Prior art]
Recently, there is a tendency to use discharge lamps such as HID lamps for automobile headlamps. However, a lighting circuit for starting the discharge of the discharge bulb is required, and there is a problem that electromagnetic waves generated during discharge of the lighting tube and discharge lamp in the lighting circuit become harmful noise for other electrical components. It was.
[0003]
For this reason, there has been a conventional discharge lamp illuminator (for example, Japanese Patent Laid-Open No. 9-204801) that can remove noise.
[0004]
[Problems to be solved by the invention]
However, in this conventional example, a conductive cover is integrally provided on the outer surface of the connector, a projecting edge is provided at the peripheral edge of the opening of the cover, and is elastically fitted to the reflector via the socket fixture. As a result, the number of parts was large and the installation work took a long time.
[0005]
Further, a notch is provided on the lower surface of the conductive cover, and the cord is sandwiched between them to be elastically connected. For this reason, electrical reliability is low at the connecting portion, and abnormal wear or the like may occur due to vibrations of the automobile, etc., which may hinder continuity.
[0006]
In addition, since the connector is covered with the conductive cover, it is difficult to confirm an under-fitted state, for example, a half-fitted state, so that smoke and fire may occur due to high voltage.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a discharge lamp lighting apparatus and a discharge lamp socket that can be simply connected to a cover and can reliably remove noise.
[0008]
[Means for Solving the Problems]
The discharge lamp illuminator according to claim 1 is a conductive lamp for mounting and supporting a discharge lamp, and a lamp socket fitted and mounted by pushing and rotating the discharge lamp supported by the lamp. And a lighting device for lighting the discharge lamp at a high frequency, wherein the lamp socket has a lead wire that is led out to one side surface and a projection that externally fits an end of a shield sleeve that covers the lead wire And a conductive cover that covers a back surface and a side surface of the lamp socket, and a fitting portion that fits on the shield sleeve of the protruding portion by covering the lamp socket with the cover. A first contact is provided on the opening edge of the cover, and the first contact comes into contact with the discharge lamp when the lamp socket is mounted on the discharge lamp. The second contact is characterized in that provided in the lamp body.
[0009]
According to the discharge lamp lighting apparatus of claim 1, since the cover and the lamp body are electrically connected when the lamp socket is mounted on the discharge lamp, noise can be removed and the number of parts can be reduced. Connection with the lamp becomes easy.
[0010]
Discharge lamp socket according to claim 2 is the discharge lamp which is supported on a conductive fixture, in pushing and discharge lamp socket fitted and mounted by rotating the back and of the socket body and a socket body The socket body has a conductive cover that covers a side surface, and the socket body has a projecting portion that leads out to one side surface and that fits an end of a shield sleeve that covers the lead wire, The cover has a fitting portion that fits on the shield sleeve of the projecting portion by covering the socket body, and a first contact is provided at an opening edge of the cover, and the socket body is attached to the discharge lamp. The first contact is brought into contact with a second contact provided on the lamp body when mounted .
[0011]
According to the discharge lamp socket of the second aspect, the same effect as the first aspect is obtained.
[0012]
According to a third aspect of the present invention, there is provided the discharge lamp socket according to the second aspect, wherein the fitting portion is provided with a connecting blade portion that meshes with the shield sleeve for electrical conduction .
[0013]
According to the discharge lamp socket of the third aspect, since the shield sleeve can be reliably connected by the connecting blade-like portion, the reliability of electrical connection is improved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIG. That is, the discharge lamp lighting fixture includes a lamp body 1, a lamp socket 2, a lighting device (not shown), and a cover 4.
[0015]
The lamp body 1 is conductive, and the discharge lamp 5 is mounted and supported. In the embodiment, the lamp body 1 is a reflecting plate, and the discharge lamp 5 is an HID lamp, which is attached to the center of the lamp body 1. Reference numeral 20 denotes a base portion formed of an insulator of the discharge lamp 5, which is provided with a peripheral electrode portion 21 having a small diameter on the front end side outward from the base portion and a concentric center electrode 22. Reference numeral 23 denotes a collar of the base part. Further, a rigid contact 7 is provided on the lamp body 1 in the vicinity of the mounting portion of the base 20 of the discharge lamp 5 mounted on the lamp body 1. A pair of lamp mounting pins 10 provided on the lamp base 11 is provided at symmetrical positions on the peripheral surface.
[0016]
The lamp socket 2 is a bayonet mounting type that is fitted and mounted by being pushed and rotated into the discharge lamp 5 supported by the lamp body 1, and is a substantially L-shaped lamp pin engagement that engages with the lamp mounting pin 10. Has a groove. Further, a prismatic protrusion 13 is provided from one side of the cylindrical lamp socket 2, and a lead wire (not shown) is drawn from the protrusion 13.
[0017]
The lighting device is for lighting the discharge lamp 5 at high frequency. The lead wire is connected to the lighting device, the lead wire is covered with the shield sleeve 12, and the end of the shield sleeve 12 is externally fitted to the protruding portion 13. .
[0018]
The cover 4 is conductive, covers the side surface from the back of the lamp socket 2, and when the lamp socket 2 is attached to the discharge lamp 5, the cover 4 and the lamp body 1 are electrically connected. In the embodiment, a recess is formed at the opening edge, and a contact 8 that extends into the recess 15 from the inner edge of the recess 15 and contacts the contact 7 is integrally provided. The cover 4 is made of metal, the contact piece 8 has elasticity, and a positioning portion 16 for positioning the contact piece 7 is bent, and the lamp socket 2 is inserted into the discharge lamp 5 and rotated to fit the position. I try to match the position. In addition, a rectangular tube-shaped fitting portion 14 that is externally fitted to the protruding portion 13 of the lamp socket 2 is provided on the cover 4, and the end portion of the shield sleeve 12 is externally fitted at the end portion of the fitting portion 14 to make electrical contact. ing. The cover 4 can be fixed by simply covering the lamp socket 2 by contact with the contact pieces 7 and 8 and contact with the shield sleeve 12, but the lamp socket 2 can be clamped into the lamp socket 2 or other fixing means. You may make it fix to.
[0019]
In this discharge lamp illuminating device, an HID ballast is fixed, and electric power is supplied through a lead wire by installing the lamp socket 2 to the discharge lamp 5 of the HID lamp by rotational fitting. By attaching the spring 8 to the contact 8 of the conductive cover 4 by rotational fitting of the lamp socket 2 and simultaneously connecting it to the contact 7 in a positioning state, the lamp 1, the cover 4 and the shield sleeve 12 is electrically connected.
[0020]
As described above, the discharge lamp socket is a discharge lamp socket that is fitted and mounted on the discharge lamp 5 supported by the conductive lamp 1 by being pushed and rotated. When the socket body is mounted on the discharge lamp 5, the cover 4 is electrically connected to the lamp body 1.
[0021]
According to the first embodiment, there is no need for a separate part such as a conventional socket fixture, so the number of parts can be reduced. Further, by fitting the contacts 7 and 8 on the side surfaces, the man-hours can be reduced and the cost can be reduced at the time of processing the parts of the conductive cover, rather than contacting the openings.
[0022]
Furthermore, by matching the shape of the contact 7 with the contact 8 of the conductive cover 4, it can be used for positioning during rotation fitting. Since the contact 7 is also used for positioning at the time of socket fitting, the contact 7 can be surely mounted, so that ignition and smoke generation due to half-fitting can be prevented. In addition, since a click feeling is generated in the positioning portion, it is possible to confirm the presence / absence of mounting not only by visual observation but also by a hand feeling in a small space.
[0023]
In addition, the lamp socket 2 and the cover 4 can be attached at the same time as the rotation fitting of the lamp socket 2 with one operation, and the workability is good.
[0024]
A second embodiment of the present invention is shown in FIG. In other words, in the first embodiment, the discharge lamp illuminating device has the contact 8 on the cover 4 side as a rigid body, and the contact 7 of the lamp 1 has elasticity. Further, the contact 7 is curved to form a fitting recess 15 and is positioned by elastically engaging the contact 8 with the recess 15.
[0025]
Others are the same as those in the first embodiment.
[0026]
A third embodiment of the present invention is shown in FIG. That is, in the discharge lamp socket of the discharge lamp lighting fixture, the socket body 2a is substantially cylindrical, and is provided with a prismatic protrusion 13 from which a plurality of lead wires 17 are led out on one side surface. The cover 4 is provided with a connecting blade-like portion 19 that is fitted to the projecting portion 13 so that the end of the shield sleeve 12 that is externally covered is fitted to the projecting portion 13 and is electrically engaged with the shield sleeve 12 by the projecting portion 13.
[0027]
In this manner, the prismatic fitting portion 14 is integrally provided on the conductive cover 4, the connecting blade-like portion 19 protrudes from the lower end portion of the fitting portion 14 , and the protruding portion 13 of the lamp socket 2 is wrapped by the shield sleeve 12. Further, the electrical connection can be surely obtained by being fitted to the conductive cover 4 and being sandwiched by the connecting blade 19 at the same time.
[0028]
According to this embodiment, the notch is not provided on the lower surface of the conductive cover 4, but the fitting portion 14 is provided integrally with the conductive cover 4, and the blade-like portion 19 is provided at the lower end opening of the fitting portion 14. The shield sleeve 12 is held by the connecting blade 19 and the lamp socket 2 when the lamp socket 2 is fitted into the conductive cover 4, thereby preventing the sleeve from being worn and the like and preventing the conductivity from being hindered. . Further, when the blade-like portion 19 is engaged with the shield sleeve 12, it is possible to prevent the shield sleeve 12 from coming off from vibration or the like.
[0029]
A pair of contacts 7 and 8 may be provided.
[0030]
【The invention's effect】
According to the discharge lamp lighting apparatus of claim 1, since the cover and the lamp body are electrically connected when the lamp socket is mounted on the discharge lamp, noise can be removed and the number of parts can be reduced. Connection with the lamp becomes easy.
[0031]
According to the discharge lamp socket of the second aspect, the same effect as the first aspect is obtained.
[0032]
According to the discharge lamp socket of the third aspect, in addition to the same effect as that of the second aspect, the shield sleeve can be reliably connected by the connecting blade-like portion, so that the reliability of the electrical connection is improved.
[Brief description of the drawings]
FIG. 1 is a partial perspective view before connection of a lamp body and a lamp socket according to a first embodiment of the present invention.
FIG. 2 is a partial perspective view before connection of a lamp body and a lamp socket according to a second embodiment.
FIG. 3 is a partial perspective view showing a connection between a cover and a shield sleeve of a lamp socket according to a third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lamp body 2 Lamp socket 4 Cover 5 Discharge lamp 7 Contact 8 Contact 12 Shield sleeve 13 Protrusion part 14 Fitting part 19 Connection blade part

Claims (3)

A conductive lamp for mounting and supporting a discharge lamp, a lamp socket fitted and mounted by pushing and rotating the discharge lamp supported by the lamp, and a lighting device for lighting the discharge lamp at high frequency The lamp socket includes a protrusion on one side of which a lead wire leads out and externally fits an end of a shield sleeve that covers the lead wire, and the rear surface of the lamp socket and The cover includes a conductive cover that covers a side surface, and the cover is provided with a fitting portion that fits on the shield sleeve of the projection by covering the lamp socket, and an opening edge of the cover. the first contact is provided, it is provided a second contactor the lamp the first contact when the mounted socket to the discharge lamp is in contact with the lamp body The discharge lamp lighting apparatus, wherein the door. In a discharge lamp socket fitted and mounted by being pushed and rotated into a discharge lamp supported by a conductive lamp body, the socket body and a conductive cover that covers the back and sides of the socket body are provided. The socket body has a protruding portion for extending a lead wire to one side surface and externally fitting an end of a shield sleeve covering the lead wire, and the cover protrudes by covering the socket body with the cover. A first contactor is provided on the opening edge of the cover, and the socket body is attached to the discharge lamp when the socket body is mounted on the lamp body. A socket for a discharge lamp , wherein the first contact is in contact with two contacts . The discharge lamp socket according to claim 2 , wherein a connection blade-like portion that meshes with the shield sleeve for electrical conduction is provided in the fitting portion .

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