JP2000357407A - Discharge lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the assembly of the entire lamp or the replacement of the bulb with laborsaving and simple work. SOLUTION: This is a discharge lamp wherein a power supply socket 30 and a socket shielding member for covering the socket 30 are mounted on a bulb having a discharge arc part. A retaining part for retaining a fixing hardware 50 of the socket shielding member to the socket 30 at a certain relative position is disposed in the socket 30. By coupling the socket 30 with a socket coupling part 20 of the bulb in the retaining state, a contact part 58 of the fixing hardware 50 is brought into contact with a contact part 18 of a shielding member on the bulb side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp used for a head lamp of a vehicle.

[0002]

2. Description of the Related Art In recent years, HID (High-Intensity Discharg
e) Discharge lamps such as lamps are attracting attention. This discharge lamp has low power consumption,
It has the advantages of higher luminance and longer life than conventional halogen lamps (for example, Japanese Patent Application Laid-Open No. 9-204).
No. 801).

FIGS. 1 to 12 show an example of the structure. The illustrated discharge lamp includes a bulb 210 and a socket 230 coupled thereto.

[0004] The bulb 210 includes a light emitting section 212, a lamp 2
14 and a shield cover 216 are provided. The light emitting unit 212 extends in the front-rear direction on the tip side of the bulb 210, and emits light by discharge. The lamp 214 has the bulb 21
2 and reflects the light emitted from the bulb 212 forward. The shield cover 216 is a valve 2
The valve 212 is covered from the front with the side 12 exposed.

A rear portion of the valve 210 is provided with a socket connecting portion 22.
0, and the socket 2
30 is detachably fitted. The high voltage electrode 222 and the low voltage electrode 224 of the light emitting section 212 are exposed from the socket coupling section 220. More specifically, the end of the high-voltage electrode 222 is exposed in a ring shape at the rear of the socket coupling portion 220, and the end of the low-voltage electrode 224 is exposed so as to surround the outside thereof in the same ring shape.

The socket 230 has a high voltage socket terminal 2
32 and the low voltage socket terminal 234 are fixed. Electrode contact portions 232b and 234b are formed at the front ends (upper ends in FIG. 2) of these socket terminals 232 and 234, and terminal contact portions 232a and 234a are formed at the rear ends, respectively.
Socket joint 220 between socket 230 and valve 210
Are fitted, the electrode contact portion 232b of the high voltage socket terminal 232 and the electrode contact portion 234b of the low voltage socket terminal 232 are connected to the high voltage electrode 222 and the low voltage electrode 2 respectively.
24, the socket terminals 232 and 234 are arranged.

On the other hand, an electric wire terminal 262 is attached to an end of an electric wire 260 for supplying power to the lamp, and a protruding piece 262a formed on the electric wire terminal 262 has the socket terminals 232 and 234 in the socket 230. Are respectively fitted to the terminal contact portions 232a and 234a. The electric wire 260 and the electric wire terminal 262 are covered by the socket cover 240 from behind.

In FIGS. 1 and 3, reference numeral 290 denotes a switch terminal provided on the socket 230 for detecting whether or not the socket connecting portion 220 and the socket 230 are completely connected.

The socket connecting portion 220 and the socket 23
The fitting structure with 0 is as follows. As shown in FIG. 9, two projections 227 projecting in the radial direction are formed at 180 ° intervals on the outer peripheral surface of the socket coupling portion 220. On the other hand, four fitting grooves 237 are formed at 90 ° intervals on the outer peripheral wall of the socket 230. Each fitting groove 237 extends in the circumferential direction from a projection inlet 237a opened to an axial end of the socket 230, and the terminal end thereof is a projection 227.
Is a small width portion 237b so small that it cannot enter. In other words, the protrusion 227 can enter the fitting groove 237 in the circumferential direction up to a position immediately before the small width portion 237b.

The reason why the number of the fitting grooves 237 is larger than the number of the protrusions 227 is that the mounting angle of the socket 230 with respect to the socket connecting portion 220 can be changed at 90 ° intervals.

Next, the shield structure of the lamp will be described. Each electric wire 260 has a braid 280 made of copper or the like.
A fixing bracket 282 is fixed to an end of the braid 280 by means such as caulking.
On both side walls of the fixing bracket 282, contact spring pieces 283 extending from both sides to both outsides are formed. The fixing bracket 282 is attached to the electric wire introduction port of the socket 230, and a shield cover 250 having a shape covering the entire socket 230 is attached to the socket 230, and the inner surface of the shield cover 250 and the fixing
By contacting the spring piece 283 of 82, a shield structure is formed from the socket 230 to the electric wire 260, which covers these in series.

Next, the procedure for assembling the lamp will be described.

As shown in FIG. 3, a high voltage terminal 232, a low voltage terminal 234,
6 and the switch terminal 290 are attached.

Each wire 260 shown in FIG. 4 is set in the wire groove 238 in the socket shown in FIG.
2 are connected to the socket terminals 232 and 234. And
A sealing member 270 shown in FIG. 5 is fitted from above, and this is further covered with a socket cover 240 shown in FIG.

As shown in FIG. 7, the electric wire introduction portion 239 of the socket 230 and the electric wire introduction portion 2 of the socket cover 240
A braid fixing bracket 282 fixed to the end of the braid 280 is externally fitted to and fixed to the portion where 49 is fitted (the state of FIG. 8). The braid 280 is connected to ground through a circuit (not shown).

The socket 230 is fitted into the socket connecting portion 220 as shown in FIGS. First, each protrusion 227 has its protrusion entrance 237 in an appropriate fitting groove 237.
The socket 230 and the socket connecting portion 220 are fitted in the axial direction so as to enter in the axial direction from a, and are temporarily fitted (FIG. 9 → FIG. 10). Next, by rotating the socket 230 relatively with respect to the socket coupling portion 220, the projection 2
27 is inserted into the fitting groove 237 in the circumferential direction to the depth of the fitting groove 237 (to a position immediately before the small width groove 237b) and is fully fitted (FIG. 1).
1).

As shown in FIG. 12, the shield cover 250 shown in FIG.
At the position to cover from outside. At this time, the notch 258a of the contact portion 258 formed on the socket shield cover 250 and the spring piece 218a formed on the contact portion 218 of the valve shield cover 216 engage with each other. Braid fixing bracket 2
When the spring pieces 283 of the pair 82 come into contact with each other, the shield covers 216 and 250 are connected to the ground together with the braid fixture 282 and the braid 280. Thereby, the bulb 210, the socket 230, and the electric wire 260
Are continuously shielded.

[0018]

The discharge lamp has a structure in which the socket 230 is first fitted into the socket connecting portion 220 and then the shield cover 250 is attached. Connection work must be performed individually. Therefore, when the working space around the place where the bulb 210 is installed is very narrow, there is a disadvantage that the efficiency of assembling the lamp is significantly reduced.

In the case of replacing the valve 210 for the purpose of maintenance or the like, with the above-described configuration, it is necessary to first remove the shield cover 250 from the valve 210 and then remove the socket 230 from the socket joint 220. Yes, after the replacement of the valve, it is necessary to first connect the socket 230 to the socket connecting portion 220 of the new valve 210 and then attach the shield cover 250. In other words, when replacing the valve, a total of four attachment / detachment operations are required, which requires a great deal of labor.

In view of such circumstances, an object of the present invention is to provide a discharge lamp in which the entire lamp can be assembled and the bulb can be replaced with a simple operation without any trouble.

[0021]

As a means for solving the above problems, the present invention provides a bulb having a light emitting portion which emits light by discharge, and a valve shield member for covering the light emitting portion in a partially exposed state. A socket for connecting the light emitting unit to a power supply by being coupled to the bulb, and a socket shield member for covering the socket, and holding the socket shield member at a specific relative position in the socket. A holding portion is provided, and the socket shield member is connected to the valve in the holding state so that the socket shield member comes into contact with the valve shield member.

According to this structure, the socket is connected to the valve in a state where the socket shield cover is held in advance by the holding portion of the socket and the relative positions of the two are fixed. The shield cover for the valve automatically comes into contact with the shield cover for the valve, so that both shield covers form a continuous shield structure. In this way, the socket and the shield cover for the socket are combined at a location away from the valve installation location, and these can be connected to the valve in a single operation. Efficiency is greatly increased.

Also, when replacing a valve for maintenance or the like, both the socket and the shield cover for the socket can be simultaneously removed from the valve by a single operation. The socket and the shield cover for sockets can be connected at the same time with a single operation. The number of times is halved.

For example, in the case of a fitting structure in which the socket and the valve are permanently fitted in the axial direction and then the two are relatively rotated, the socket and the valve are fully fitted. Accompanying this, if the socket shield cover held by the holding portion of the socket is configured to abut on the valve shield cover in the rotational circumferential direction, the socket shield cover will be The shield covers can be reliably brought into contact with each other without hindering the connection, and in the subsequent actual fitting operation.

Specifically, one of the socket and the valve is provided with a protruding portion, and the other is formed with a protruding portion which is protruded in the axial direction of the socket and the valve, and is formed into a shape capable of being protruded in the circumferential direction. If the groove is provided, after the provisional fitting in which the protrusion enters the fitting groove in the axial direction is completed, the socket and the valve are relatively rotated to rotate the protrusion around the fitting groove. It is possible to achieve the full fitting by making the arms enter in the direction.

Specifically, as a configuration for bringing the socket shield member and the valve shield member into contact with each other, a contact portion projecting outward in the radial direction is formed on the socket shield member, and the valve shield member is formed on the socket shield member. A contact portion protruding from the valve toward the socket is formed such that the contact portion of the socket shield member comes into contact with the contact portion of the valve shield member in the circumferential direction of rotation with the relative rotation of the valve and the socket. It is preferable that the above-mentioned configuration is adopted. Thereby, both shield members can be brought into contact with each other with a simple structure.

The "socket shield member" does not necessarily mean that the socket only covers the socket.
It is intended to include those covering both the socket and the electric wire connected to it. For example, the socket shield member,
If it is composed of a conductor braid that covers the socket and the electric wire connected to it over both, and a held metal member provided at the end of the conductor braid, a structure in which the electric wire and the socket are shielded by separate members as in the related art The number of parts is reduced and the assembling work is simplified. Also, if the conductor braid is connected to ground, this conductor braid will
Since both wires can be reliably shielded, reliability is high.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to FIGS.

The illustrated discharge lamp comprises a bulb 10 and a socket 30 coupled thereto.

The bulb 10 includes a light emitting section 12, a lamp 14,
And a shield cover 16. Light emitting unit 12
Extends in the front-rear direction on the distal end side of the bulb 10 and emits light by discharge. The lamp 14 is located immediately behind the bulb 12 and reflects light emitted from the bulb 12 forward. The shield cover 16 covers the bulb 12 from the front while exposing the bulb 12 to the side.

The rear part of this valve 10 is a socket connecting part 2
0, so that the socket 30 is detachably fitted to the socket coupling portion 20. The high voltage electrode 2 of the light emitting unit 12 is
2 and the low voltage electrode 24 are exposed.

More specifically, a recess is formed in the center of the rear portion (the right side portion in FIG. 13, and the upper portion in FIG. 17) of the socket connecting portion 20, and a projecting column 23 is formed in the center of the recess. The end of the high-voltage electrode 22 is exposed in a ring shape on the outer peripheral surface of the column 23, and the end of the low-voltage electrode 24 is exposed on the outer peripheral surface of the socket coupling portion 30 so as to surround the outside in the same ring shape. A pair of contact portions 18 extending from the shield cover 16 are provided on the rear surface of the socket coupling portion 20.
Are exposed, and these contact portions 18 are formed with spring pieces 18a projecting rearward.

The socket 30 has a high-voltage socket terminal 32
And the low voltage socket terminal 34 is fixed. Electrode contact portions 32b and 34b are formed at the front ends (upper end portions in FIG. 14) of these socket terminals 32 and 34, and terminal contact portions 32a and 34a are formed at the rear ends thereof. The socket terminals 32 and 34 are connected so that the electrode contact portion 32b of the high-voltage socket terminal 32 and the electrode contact portion 34b of the low-voltage socket terminal 32 contact the high-voltage electrode 22 and the low-voltage electrode 24, respectively, in a state where the portion 20 is connected. Are located.

A sealing member (insulating member) 36 made of rubber or the like is provided between the high-voltage socket terminal 32 and the low-voltage socket terminal 34 for electrically sealing the two terminals. This seal member 36 is fitted on the outer periphery of a cylindrical portion 33 formed at the center of the socket 30. Also,
A projection 36a is projected rearward from the seal member 36.

A mold chamber 30a is formed at the rear part (lower part in FIG. 15) of the housing of the socket 30 so as to open rearward and one side (lower and right in FIG. 15). The socket terminals 32, 34 and the seal member 36 are arranged in the mold chamber 30a such that the terminal contact portions 32a, 34a and the projection 36a protrude along the socket axial direction.

On the other hand, among the electric wires 60 for supplying power to the lamp, a high-voltage electric wire terminal 62 is provided at an end of the high-voltage electric wire.
The low-piezoelectric wire terminal 64 is attached to each end of the low-piezoelectric wire. Each of the wire terminals 62 and 64 is provided with the mold chamber 30.
terminal contact portions 3 of socket terminals 32 and 34 projecting into
Fitting gaps 62a, 64a into which 2a, 34a can be fitted respectively.
Are formed.

The fitting structure between the socket connecting portion 20 and the socket 30 is as follows. As shown in FIG.
The outer circumferential surface of the socket connecting portion 20 has a radially projecting 2
One projection (projection) 27 is formed at 180 ° intervals.

On the other hand, at the rear end of the outer peripheral wall of the socket 30, four engagement grooves 37 are formed at 90 ° intervals.
Each of the engaging grooves 37 extends in the circumferential direction from a projection inlet 37a opened to the axial end of the socket 30.
23, the small width portion 37b is so small that the projection 27 cannot enter. And this small width part 3
A fitting hole 37c having a shape corresponding to the outer shape of the projection 27 is formed at a position immediately before the side 7b.
The protrusion 27 can enter the inside of the engagement groove 37 in the circumferential direction up to a position where the protrusion 27 is fitted into the engagement groove c.

The reason why the number of the engagement grooves 37 is larger than the number of the projections 27 is that the mounting angle of the socket 30 with respect to the socket connecting portion 20 can be changed at 90 ° intervals.

In the present invention, a projection may be provided on the socket 30 side, and an engagement groove into which the projection may enter may be provided on the socket coupling section 20 side.

In this embodiment, the sealing member 36
Has a shape that is greatly extended in the axial direction, and protrudes more toward the valve 10 than the front side surface (the left side surface in the figure) of the socket 30 in a free state as shown in FIG. Have been. And this valve 1
The seal member 36 is configured to be elastically compressed and deformed in the same direction as the socket coupling portion 20 and the socket 30 are temporarily fitted in the axial direction.

In FIGS. 14 and 25, 36b
Is a through hole provided in the peripheral wall of the seal member 36 to facilitate elastic compression deformation of the seal member 36.

The lamp is provided with the electric wires 60 and a braid 80 covering the electric wires 60.
The braid 80 is formed by braiding a conductive material such as copper, and a fixing bracket (held metal fitting) 50 is fixed to an end thereof.

The fixing bracket 50 is made of a conductor, similarly to the braid 80, has a substantially C-shaped cross-sectional shape in which a part in the circumferential direction is absent in the illustrated example, and has a caulked end portion of the braid 80. Alternatively, it is fixed by means such as adhesion. An axial end of the fixing bracket 50 is a flange 52 protruding radially outward, and a cutout 52a is formed in a part of the circumferential direction. In addition, a braid holding portion 54 for holding the braid 80 from outside is provided at an appropriate position of the fixing bracket 50.

On the other hand, a flange portion 39 is also formed at the front end of the socket 30, and a plurality of convex portions 35 extending in the axial direction are formed at positions away from the flange portion 39 rearward. The projection 35 and the flange 39
The fitting position of the fixing member 50 with respect to the socket 30 is determined in the axial direction by fitting the fixing member 50 between the two.

Further, a braid holding piece 30b for sandwiching the braid 80 together with the outer peripheral surface of the socket 30 is formed in a part of the socket 30 in the circumferential direction, and as shown in FIG.
0 is pulled in a direction perpendicular to the socket axis direction, it is possible to prevent the end of the braid 80 from coming off the fixing bracket 50, and to prevent the braid holding piece 3
Ob fits into the notch 52a of the flange portion 52, so that the mounting position of the fixture 50 with respect to the socket 30 is also determined in the circumferential direction.

That is, the flange 39, the convex portion 35, and the braided holding piece 30b of the socket 30 constitute a holding portion for positioning the fixture 50 relative to the socket 30 and holding the fixture.

The flange 52 of the fixture 50 has
A pair of contact portions 58 projecting further in the radial direction is formed from this. The contact portion 58 is formed with a projecting piece 58a projecting rearward from the contact portion 58, and the projecting piece 58a and the spring piece 18a of the contact portion 18 in the shield cover 16 abut in the circumferential direction, so that The fixing bracket 50 and the shield cover 16 are electrically connected.

Next, the procedure for assembling the lamp will be described.

The high voltage terminal 32, the low voltage terminal 34, and the seal member 36 are mounted in the socket 30.

As shown in FIG. 15, the high-voltage electric wire terminal 62 is inserted into the mold chamber 30 a of the socket 30, and the terminal contact portion 32 a of the high-voltage socket terminal 32 is inserted into the insertion gap 62 a. Similarly, the low-voltage wire terminal 64 is made to enter the mold chamber 30a, and the terminal contact portion 34a of the low-voltage socket terminal 34 is fitted into the fitting gap 64a. Thus, the socket terminals 32 and 34 and the electric wire 60 are connected.

The molten resin is poured into the mold chamber 30 a to integrate the socket 30 with the wire terminals 62 and 64. In other words, a mold body 31 having a shape corresponding to that shape is shown in the mold chamber 30a (shown by a broken line in FIG. 14).
Is molded. At this time, the projection 36a of the seal member 36 is also molded, so that the seal member 36 is also fixed to the socket 30.

As shown in FIG. 17, the fixing bracket 50 fixed to the end of the braid 80 is attached to the socket 30.
Specifically, while the fixing bracket 50 having a C-shaped cross section is forcibly expanded in diameter and passed around the convex portion 35,
The fixing metal fitting 50 is fitted between the fixing member 50 and the flange portion 39. At this time, the braid holding portion 30b of the socket 30 is inserted into the notch 52a of the flange portion 52 of the fixture 50. Thereby, the positioning of the fixing member 50 in the axial direction and the circumferential direction with respect to the socket 30 is completed, and the fixing member 50 is completely held in the socket 30.

As shown in FIGS. 18 to 21, the socket 30 is temporarily fitted to the socket connecting portion 20. That is,
The socket 30 and the socket coupling portion 20 are fitted in the axial direction so that the projection 27 of the socket coupling portion 20 enters the appropriate engagement groove 37 in the axial direction from the projection entrance 37a. This temporary fitting is performed while elastically deforming the sealing member 36 that protrudes forward from the socket 30 in the compression direction in the compression direction.

After the temporary fitting, the socket 30 is relatively rotated with respect to the socket connecting portion 20, so that the projection 27
Into the engagement groove 37 (as shown in FIG. 23).
7c) to the circumferential direction. Thus, the socket 30 and the socket connecting portion 20 cannot be separated in the axial direction. That is, the protrusion 27 and the engagement groove 37
As a result, the connected state between the socket 30 and the socket connecting portion 20 is maintained while resisting the resilience of the seal member 36 (full fitting shown in FIGS. 22 to 24).

At the time of this full fitting, the projecting piece 58a of the fixing member 50 mounted on the socket 30 comes into contact with the spring piece 18a of the shield cover contact portion 18 on the valve 10 side in the circumferential direction of rotation (FIG. 22) At the same time when the socket 30 and the valve 10 are connected, the fixing bracket 50 and the shield cover 18 are electrically connected. Therefore, in this state, the shield cover 16, the fixing bracket 50, and the braid 80 can be collectively connected to the ground, whereby a shield device that continuously covers the socket 30 and the electric wire 60 can be constructed.

If the hand is released at a stage where the socket 30 and the socket connecting portion 20 are incompletely fitted, for example, at the stage of temporary fitting, the elastic force of the seal member 36 causes the elastic force of FIG. As shown in FIG. 26, since the socket 30 and the socket connecting portion 20 are separated in the axial direction, it is possible to prevent the socket 30 and the valve 10 from being left in a half-fitted state.

According to the structure shown here, the fixing fitting 5 is attached to the socket 30 side at a distance from the valve installation position in advance.
0 and holding the socket 30 in the fixed position relative to the socket 30 by connecting the socket 30 to the socket connecting portion 20 of the valve 10.
The zero contact portion 58 and the contact portion of the valve shield cover 16 automatically come into contact with each other, so that both shield covers form a continuous shield structure. Thus, valve 1
Since the connection between the socket and the shield cover for the socket can be performed only by performing one operation for 0, the working efficiency is remarkably increased, especially when the working space around the valve is small.

Also, when replacing the valve 10 for maintenance or the like, the socket 30 and the fixing fitting 5 can be operated by one operation.
0 can be removed from the valve 10 at the same time, and 1
Since both the socket 30 and the fixture 50 can be simultaneously connected by a single operation, the valve replacement operation is very simple as compared with the conventional method in which the socket and the shield cover for the socket are separately attached to and detached from the valve. .

The embodiment of the present invention is not limited to this, and for example, the following form can be adopted.

(1) In the present invention, even if the shield cover for socket 250 has a structure separate from the braid 280 for electric wire shield as in the structure shown in FIGS. With the structure equivalent to the above structure, the socket shield cover and the socket can be simultaneously connected to the valve side.

(2) In the present invention, the configuration of the holding portion for holding the fixing bracket 50 and other socket shield covers while positioning the relative positions of the socket 30 and the fixing bracket 50 (or the socket shield cover 70) is as follows. It can be set appropriately. For example, the convex portion 35 of the socket 30
A groove is formed in the fixing metal fitting 50 to be fitted in the fixing metal fitting 50, and the positioning is performed in the circumferential direction by the fitting. On the other hand, an engaging portion is provided in the socket 30 and the fixing metal fitting 50, and the positioning in the axial direction is performed by the engagement. Even if it does, it is possible to hold | maintain the fixture 50 to the socket 30 so that a relative movement is impossible.

(3) In the above embodiment, the socket 30 and the valve 10 are temporarily fitted in the axial direction, and thereafter, the two are relatively rotated to be fully fitted. The present invention is also applicable to a valve in which the fitting operation is performed only in the axial direction with the valve. In this case, it is sufficient that the socket shield member comes into contact with the valve shield cover only when the fitting is completely deepened.

[0064]

As described above, the present invention provides a bulb having a light emitting portion which emits light by discharge, a valve shield member for covering the light emitting portion in a partially exposed state, and being coupled to the bulb. A socket for connecting the light emitting unit to a power source, and a socket shield member for covering the socket are provided, and a holding unit for holding the socket shield member at a specific relative position is provided on the socket. Since the socket shield member is configured to be in contact with the bulb shield member by coupling the socket to the bulb, there is an effect that the entire lamp can be assembled and the bulb can be replaced with a simple operation without any trouble. is there.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a conventional discharge lamp.

FIG. 2 is an exploded perspective view of the discharge lamp.

FIG. 3 is an exploded perspective view of a socket in the discharge lamp.

FIG. 4 is a cross-sectional front view showing a stage before an electric wire terminal is set in a socket of the discharge lamp.

FIG. 5 is a perspective view showing a stage after an electric wire terminal is set in a socket body of the discharge lamp and before a seal member is set.

FIG. 6 is a perspective view showing a stage after a seal member is set on a socket body of the discharge lamp and before a socket cover is attached.

FIG. 7 is a perspective view showing a stage before a braid for electric wire shielding is connected to the socket.

FIG. 8 is a perspective view showing a state where a braid for electric wire shielding is connected to the socket.

FIG. 9 is a perspective view showing a stage before the socket is connected to the bulb.

FIG. 10 is a perspective view showing a stage where the socket is temporarily fitted to a valve.

FIG. 11 is a perspective view showing a stage after the socket is fully fitted to a valve and before a socket shield cover is attached.

FIG. 12 is a perspective view showing a state in which the socket shield cover is mounted.

FIG. 13 is a sectional front view of the discharge lamp according to the embodiment of the present invention.

FIG. 14 is an exploded perspective view of the discharge lamp according to FIG.

FIG. 15 is a cross-sectional view showing a stage where electric wire terminals are set in a mold chamber of the discharge lamp according to FIG. 13;

FIG. 16 is a sectional front view of a socket in the discharge lamp according to FIG. 13;

FIG. 17 is a perspective view showing a stage before attaching a braid fixing bracket to the socket of the discharge lamp according to FIG. 13;

FIG. 18 is a perspective view showing a state before the socket to which the braided fixing bracket is attached is connected to the socket connecting portion of the valve.

FIG. 19 is a front view showing a stage in which the socket and the socket connecting portion of FIG. 18 are temporarily fitted.

20 is a front view showing a positional relationship between a protrusion and an engagement groove in a provisionally fitted state shown in FIG. 19;

FIG. 21 is a sectional side view showing the state of FIG. 19;

FIG. 22 is a front view showing a state where the socket and the socket connecting portion of FIG. 18 are fully fitted.

FIG. 23 is a front view showing a positional relationship between a projection and an engagement groove in the fully fitted state shown in FIG. 22.

FIG. 24 is a sectional side view showing the state of FIG. 22;

25 is a cross-sectional front view showing a state where the socket and the socket connecting portion according to FIG. 18 are separated by the elastic force of a seal member.

26 is a sectional side view showing the state of FIG. 25.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bulb 12 Light-emitting part 16 Shield cover for valve 18 Contact part of shield cover for valve 20 Socket coupling part 27 Projection (projection part) 30 Socket 30b Braid holding part (holding part) 35 Convex part (holding part) 39 Flange part (holding) Part) 50 Fixing bracket (holding fixture) 58 Contact part of fixing bracket 60 Electric wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroki Hirai 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Inside Harness Research Institute, Inc. (72) Inventor Tetsuji Tanaka 1 Kikuzumi, Minami-ku, Nagoya-shi, Aichi 7-7-10 Harness Research Institute, Inc. (72) Inventor Shigeki Sakai 1-7-10 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture Harness Research Institute, Inc. (72) Inventor Yoshito Sakai Nagoya, Aichi Prefecture 1-7-10 Kikuzumi, Minami-ku Harness Research Institute, Inc. (72) Inventor Ryoji Tsuji 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term (reference) 3K042 AA08 AC06 CA03

Claims (5)

[Claims] 1. A bulb having a light emitting portion that emits light by discharge, a valve shield member covering the light emitting portion in a partially exposed state, and connecting the light emitting portion to a power supply by being coupled to the bulb. A socket and a socket shield member for covering the socket are provided, and a holding portion for holding the socket shield member at a specific relative position is provided in the socket, and the socket is coupled to the valve in the held state. A discharge type lamp, wherein the socket shield member is configured to contact the bulb shield member. 2. The discharge lamp according to claim 1, wherein
The socket and the valve are temporarily fitted in the axial direction, and then the two are relatively rotated to form a full fit between the socket and the valve. A discharge lamp characterized in that the shield cover for the socket held in the housing is configured to abut against the shield cover for the bulb in the circumferential direction of rotation. 3. The discharge lamp according to claim 2, wherein
Providing a protrusion on one of the socket and the valve,
On the other hand, a discharge-type lamp provided with a fitting groove having such a shape that the projecting portion can enter in the circumferential direction after entering in the axial direction of the socket and the bulb. 4. The discharge lamp according to claim 2, wherein the socket shield member has a contact portion projecting radially outward from the socket shield member, and the valve shield member has a contact projecting from the bulb toward the socket. And a contact portion of the socket shield member is configured to abut against a contact portion of the valve shield member in a circumferential direction with the relative rotation of the valve and the socket. Discharge lamp. 5. A discharge braid according to claim 1, wherein said shield member for a socket covers a socket and an electric wire connected to said socket, and a conductor braid, and an end of said conductor braid. Wherein the held metal fitting is held by a holding portion of the socket.