JP2000100207A - Discharge lamp headlamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effect extremely excellent in improving safety and reliability by preventing the falling out of a high-voltage socket attributable to the vibration of a vehicle or the like so as to prevent the occurrence of sudden lighting out or the like of a headlamp in traveling during the night. SOLUTION: Because this discharge lamp headlamp 1 is provided with, at a part of the discharge lamp headlamp 1, an assembly guide 4a to abut on a high-voltage socket 3 to disable successive assembly from being performed when the high-voltage socket 3 is not mounted to a normal position, the purpose can be accomplished by stopping a successive process from being carried out when the high-voltage socket 3 is not mounted to the normal position, in a case where an unskilled worker performs work, for instance, in replacing a discharge lamp 2, so as to force him or her to execute correct work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlamp provided in a vehicle, and more particularly, to a discharge lamp such as a metal halide lamp as a light source, and a high-pressure socket for supplying a high voltage to the discharge lamp. The present invention relates to a headlamp having a configuration as described above.

[0002]

2. Description of the Related Art A conventional discharge lamp headlamp 90 of this type is known.
FIG. 3 shows the configuration of the main part of the discharge lamp 91 as a light source of the discharge lamp headlamp 90. The base 92 is provided with a center electrode 92a and an annular electrode 92b. The power supply is performed by attaching a high voltage socket 93 to the power supply.

At this time, the base 92 is provided with, for example, a pair of protrusions 92c, and the other high-pressure socket 93 is provided.
Has a substantially L-shaped groove 93a. When the high-pressure socket 93 is mounted, the projection 92c and the groove 93a are aligned with each other, and the base portion 92 is inserted into the high-pressure socket 93. The socket 93 is rotated so that both are engaged.

[0004]

However, in the above-described conventional discharge lamp headlamp 90, electrical connection is made when the base 92 is inserted into the high-pressure socket 93, so that it is unfamiliar. Car users,
Alternatively, a high-pressure socket 93
When the high-pressure socket 93 is mounted, the amount of rotation given to the high-pressure socket 93 after the insertion is insufficient, and the high-pressure socket 93 later falls off due to vibrations during running of the vehicle, which often causes a problem that causes a non-lighting. ing.

[0005]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, a discharge lamp is adopted as a light source, and the discharge lamp is provided with a high-pressure socket. In the headlamp, a part of the discharge lamp headlamp is provided with an assembly guide that abuts on the high-pressure socket when the high-pressure socket is not in a regular mounting position and disables subsequent assembly. The problem is solved by providing a discharge lamp headlamp.

[0006]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 shows a discharge lamp headlamp (hereinafter abbreviated as headlamp 1) according to the present invention. The headlamp 1 employs a discharge lamp 2 such as a metal halide lamp as a light source. Therefore, the high pressure socket 3 shaped to be attached is attached to the base 2a of the discharge lamp 2 as in the conventional example.

Here, in the present invention, a projecting portion 3a which is larger than the outer diameter of the high-pressure socket 3 is provided on a part of the outer periphery of the high-pressure socket 3, and the projecting portion 3a When the high-pressure socket 3 is mounted on the base 2a as a specified mounting position, the high-pressure socket 3 is at a predetermined position, for example, vertically below.

Here, generally, as described above, the base 2
After the high-pressure socket 3 is attached to the housing a, the base 2a and the socket cover 4 that covers the high-pressure socket 3 are usually attached to the housing 5, and the housing 5 is usually waterproofed. In the present invention, the socket cover 4 is provided with an assembly guide 4a.

The assembling guide 4a is, for example, cylindrical with a notch 4b provided in a part of the circumference. To achieve this, the projecting portion 3a of the high-pressure socket 3 when the mounting is performed as the specified mounting position and the notch 4b of the assembly guide 4a are fitted.

In other words, conversely, as explained in the conventional example, the high-pressure socket 3 is mounted by an unskilled worker, and a sufficient rotation for fixing the high-pressure socket 3 to the base 2a is performed. Is not performed, the protruding portion 3a of the high-pressure socket 3 and the assembly guide 4a of the socket cover 4 are in contact with each other, so that mounting at a predetermined position is impossible.

Next, the operation and effect of the headlamp 1 according to the present invention having the above-described structure will be described. As described above, when the high-pressure socket 3 is not mounted as the specified mounting position, the subsequent steps cannot be performed, so that even if the worker is unfamiliar with the high-pressure socket 3
Is clearly not known as the specified mounting position, which promotes accurate work. Therefore, it is possible to prevent the high-pressure socket 3 from dropping off due to vibration or the like accompanying the traveling of the vehicle.

FIG. 2 shows another embodiment of the headlamp 1 according to the present invention. In the previous embodiment, the assembly guide 4a was provided on the socket cover 4.
The present invention does not limit the position where the assembly guide is provided. In this embodiment, the assembly guide is provided on the back surface of the reflecting mirror 6.

Along with this, a connector receiver 3b is provided at an appropriate position on the outer periphery of the high-pressure socket 3, and power can be supplied to the high-voltage socket 3 by fitting the connector 7 to the connector receiver 3b. ing. Further, as in the previous embodiment, when the connector receiver 3b is set to the specified mounting position, it is set to a predetermined position, for example, vertically below.

The assembly guide 6a provided on the back surface of the reflecting mirror 6 allows the connector 7 to be inserted only when the high-pressure socket 3 is set at the specified mounting position, for example, is fitted with the assembly guide 6a. It is formed as a shape having a rib 7a. Therefore, even in this embodiment, when the high-pressure socket 3 is not set to the specified mounting position, the subsequent step of inserting the connector 7 is impossible because the rib 7a abuts on the assembly guide 6a, so that an inexperienced operator cannot do so. On the other hand, the attachment of the high-pressure socket 3 can be reliably performed as specified.

In the above description, an example in which the assembly guide is provided on the socket cover and the reflecting mirror has been described. However, the present invention is not limited to this, and the assembly guide may be provided in a location other than the above such as a housing. is there. In addition, it goes without saying that the position and shape of the high-pressure socket with which the assembly guide comes into contact can be freely changed, and in short, it is sufficient that the subsequent steps cannot be performed.

[0016]

As described above, according to the present invention, when the high-pressure socket is not set at the proper mounting position in a part of the discharge lamp headlamp, the high-pressure socket is brought into contact with the high-pressure socket to make subsequent assembly impossible. By using a discharge lamp headlamp provided with an assembly guide, even when an inexperienced operator performs work, for example, when replacing the discharge lamp, if the high-pressure socket is not in the proper mounting position, the following process is performed. To prevent the high pressure socket from dropping off due to the vibration of the vehicle, etc. This has an extremely excellent effect on the improvement of reliability and reliability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a discharge lamp headlamp according to the present invention.

FIG. 2 is a perspective view showing another embodiment of a discharge lamp headlamp according to the present invention in a main part.

FIG. 3 is an explanatory view showing a main part of a conventional example with a part thereof cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Discharge lamp headlamp 2 ... Discharge lamp 2a ... Base part 3 ... High voltage socket 3a ... Overhang part 3b ... Socket receptacle 4 ... Socket cover 4a ... Assembly guide 4b ... Notch part 5 ... ... Housing 5a ... Assembly guide 6 ... Reflector 6a ... Assembly guide 7 ... Connector 7a ... Rib

Claims (1)

[Claims] 1. A discharge lamp headlamp, wherein a discharge lamp is adopted as a light source and the discharge lamp is provided with a high-pressure socket, wherein the high-pressure socket is located at a regular mounting position in a part of the discharge lamp headlamp. A discharge lamp headlamp provided with an assembling guide which abuts on the high-pressure socket to disable the subsequent assembling when not present.