JPH057683Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicular lamp, and more particularly, to a vehicular lamp in which a light source bulb is attached to a reflector housed in a lamp housing.

[Conventional technology]

Hereinafter, a dehydration cover for a conventional automobile headlamp will be explained with reference to FIG. 4.

In the figure, 1 is a lamp housing,
This lamp housing 1 is provided with openings 10 and 11 at the front and rear sides, respectively. A recess 12 is provided in the front opening 10 and an engaging protrusion 1 is provided in the rear opening 11.
3 for each.

Reference numeral 2 denotes a lens, and this lens 2 has a dish-like shape, and adhesive legs 20 are integrally provided around the entire circumference of the opening. The adhesive leg 20 of this lens 2 is adhered to the recess 12 of the housing 1 with an adhesive 21.

Reference numeral 3 denotes a reflector disposed within the lamp chamber 14 defined by the housing 1 and the lens 2, and this reflector 3 has a paraboloid-shaped reflective surface 32 at the rear and openings at the front and rear. Part 3
0 and 31, respectively.

4 is a die-cast holder, and this holder 4 has a through hole 40 into which a light source bulb 5, which will be described later, is inserted.
is opened, and one end of a mounting spring 42 as a mounting member is attached to the edge of the through hole 40, and an engaging portion (not shown) with which the other end of the mounting spring 42 engages is provided. The holder 4 thus formed is inserted into the rear opening 31 of the reflector 3 and fixed.

Reference numeral 5 denotes a light source bulb, and this light source bulb 5 includes a glass bulb 50 in which a filament 54 is enclosed;
A cylindrical connector 51 provided at the rear of the glass tube 50, and the glass tube 50 and the connector 5.
1, and a terminal 53 that protrudes rearward from the rear end of the connector 51. The glass bulb 50 of the bulb 5 thus formed is inserted into the reflector 3 through the through hole 40 of the holder 4, the flange 52 of the bulb 5 is engaged with the periphery of the through hole 40 of the holder 4, and the mounting spring 42 closes the bulb. 5 is pressed against the periphery of the through hole 40 of the holder 4, the center of the filament 54 of the bulb 5 is aligned with the focal point F of the reflective surface 32 of the paraboloid of revolution of the reflector 3, and the bulb 5 is inserted through the holder 4. It is removably attached to the reflector 3.

6 is a waterproof cover made of rubber, and this waterproof cover 6 fits into the base 51 of the valve 5 to close the valve 5.
a boss-shaped valve seal part 60 that seals the base 51 of the housing 1; and a skirt-shaped housing seal part 6 that abuts the peripheral edge of the rear opening 11 of the housing 1 to seal the rear opening 11 of the housing 1.
1, the reflector 3 and the valve 5 are provided between the valve seal part 60 and the housing seal part 61.
a thin bellows-shaped deforming part 62 that deforms and follows the movement during optical axis adjustment; an engaging part 63 provided in the circumferential direction between the housing seal part 61 and the deformable part 62; A drainage/breathing passage and a hole (not shown) are provided to communicate the inside of 14 with the outside. The valve seal portion 60 of the waterproof cover 6 thus formed is tightly fitted onto the base 51 of the valve 5, and the engaging portion 63 of the waterproof cover 6 is fitted onto the engaging protrusion 1 of the housing 1.
3 to bring the housing seal portion 61 of the waterproof cover 6 into close contact with the peripheral edge of the rear opening 11 of the housing 1.

Thus, when the filament 54 of the bulb 5 is turned on, the light emitted by the filament 54 is reflected by the reflective surface 32 of the reflector 3, and the reflected light passes through the lens 2 and is irradiated forward. Further, when replacing the valve 5, the valve 5 can be replaced by removing the waterproof cover 6 from the housing 1 and removing the valve 5 from the holder 4.

[The problem that the idea aims to solve]

However, since the above-mentioned conventional vehicle lamp is constructed by attaching the holder 4 to the reflector 3 and attaching the bulb 5 to the holder 4, the setting position of the bulb 5, for example, the filament 54 of the bulb 5 may vary.
The center of is the reflecting surface 32 of the paraboloid of revolution of the reflector 3.
In order to accurately locate the focal point F, the dimensional accuracy of both the reflector 3 and holder 4, the assembly accuracy of the reflector 3 and holder 4, and the assembly accuracy of holder 4 and valve 5 are required. Ru. On the other hand, it is difficult to set the valve 5 accurately.

Reflectors housed in lamp housings are broadly classified into (a) those whose relative positions are fixed, and (b) those whose optical axis direction can be adjusted by tilting the reflector.

In order to tilt the reflector 3 with respect to the lamp housing 1, a large and complicated waterproof cover 6 must be provided as shown in FIG.

However, in a vehicle lamp having a structure in which the reflector 3 is fixedly supported on the lamp housing 1, there is no need to use a large and complicated member like the waterproof cover 6.

The present invention was developed in view of the above-mentioned circumstances. (a) The lamp housing and the reflector can be fixed to each other with a simple structure, and (b) The light source bulb can be easily and accurately positioned with respect to the reflector. The object of the present invention is to provide a vehicular lamp that (c) is completely waterproof, (d) has excellent assembly workability, and (v) has an easy to replace light source bulb.

[Means to solve the problem]

The vehicle lamp of the present invention, which was created to achieve the above object, houses a reflector in a lamp housing, and a lens is attached to cover the front opening of the lamp housing. The present invention is applicable to a vehicle lamp having a structure in which a socket for a light source bulb is mounted through the reflector, (a) a cylindrical socket holder is integrally fixed to the center of the reflector, and (b) a socket for a light source bulb is attached to the lamp housing. (c) a flange is provided on the socket and the flange is brought into contact with the back side of the socket holder; (d) a washer is fitted onto the socket holder; (e) a ring-shaped seat is provided around the opening provided on the rear surface of the lamp housing to tightly fit the gasket; (f) a ring groove is provided on the outer periphery of the socket holder; (g) (h) configuring a short cylindrical gasket holder equipped with a flange to be fitted onto the socket holder, and to fit the flange into the socket holder and to bring it into close contact with the gasket and press it against the gasket seat; (h) the gas socket holder; (i) providing an engaging protrusion projecting toward the outer circumference at the rear end of the short cylindrical gasket retainer; j) a cap having an inner flange that engages with the engagement protrusion and a component that abuts against a flange provided on the socket and presses the flange toward the socket holder; and (k) the socket holder. and the valve socket,
It is characterized by being fitted through an O-ring.

[Effect]

According to the above configuration, (i) the cylindrical socket holder integrally connected to the reflector and the light source bulb socket fit together, and
Since the light source bulb is positioned by the flange of the light source bulb socket, the light source bulb can be set in the correct position reliably and easily.

(ii) The space between the lamp housing and the reflector is made waterproof by a washer-like gasket, and the space between the reflector and the light source bulb socket is made waterproof by an O-ring.The structure is simple and easy to assemble, and is completely waterproof. be.

In particular, since the gasket holder has a structure in which it is attached to the ring groove of the socket holder with an engaging claw, it can be assembled quickly and easily.

(iii) The light source bulb can be easily replaced by attaching and detaching the light source bulb socket to the socket holder.

〔Example〕

FIG. 1 is a sectional view showing an embodiment of the present invention, in which 1' is a lamp housing, 2' is a lens, 3' is a reflector, and 5' is a light source bulb.

A cylindrical bulb socket 7 is constructed for mounting the light source bulb 5'.

A cylindrical socket holder 3a externally fitted into the valve socket 7 is integrally provided in the center of the reflector 3'.

The valve socket 7 has an O-ring groove 7a,
A flange 7b is provided.

7c is an O-ring.

The socket holder 3a of the reflector 3 and the opening 1a provided at the center of the back side of the lamp housing 1'
A washer-like gasket 8 is interposed between the gasket and the surrounding area, and the gasket is held by a flanged cylindrical gasket holder 9. FIG. 2 shows enlarged details of the part shown in FIG. 1, and FIG. 3 shows an exploded perspective view of the part.

A valve socket 7 is inserted into a cylindrical socket holder 3a, and an O-ring 7c is inserted to seal it.

7a shown in FIG. 2 is an O-ring groove.

A flange 7b is provided on the valve socket 7,
Bring it into contact with the back surface of the socket holder 3a.

As a result, the valve socket 7 can be freely inserted into and removed from the reflector 3', and is accurately positioned in a watertight manner.

As shown in Figure 2, the lamp housing 1'
An opening 1a (FIG. 2) that fits into the socket holder 3a is provided near the center of the opening 1a, and a seat 1b for the gasket 8 is provided around the opening 1a on the back side.

A washer-shaped gasket 8 is brought into close contact with the gas socket seat 1b, and the gasket 8 is tightly fitted onto the socket holder 3a, and is pressed down with a gasket presser 9.

The gasket holder (see FIG. 3) has a shape in which a flange 9b is provided on a short cylindrical portion 9a, and a claw 9d is cut and raised near the inner periphery of the flange 9a.

This claw 9d engages with the ring groove 3b of the socket holder 3a (FIG. 2).

This engagement is quickly and easily achieved by simply pushing.

A protrusion 9c projecting outward is provided at the rear end of the short cylindrical portion of the gasket holder.

As shown in FIG. 2, the inner flange 10a of the cap 10 is attached by engaging with the above-mentioned protrusion (the attachment/detachment method will be described later).
b comes into contact with the flange 7b of the valve socket 7 and fixes it.

As shown in FIG. 3, the inner flange 10a is provided with a notch 10a-1 through which the projection 9c can pass, so that the inner flange 10a can be engaged with and removed from the projection 9c in a bayonet manner. .

[Effect of idea]

As explained above, the vehicle lamp of the present invention (a) allows the lamp housing and reflector to be fixed to each other with a simple configuration, and (b) allows easy and accurate positioning of the light source bulb with respect to the reflector. (c) completely waterproof, (d) easy to assemble, and (e) easy to replace the light source bulb, which have excellent practical effects.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged detailed view of that part. FIG. 3 is an exploded perspective view of the above embodiment. FIG. 4 is a sectional view of a conventional example. 1, 1'... Lamp housing, 2, 2'... Lens, 3, 3'... Reflector, 3a... Socket holder, 5... Light source bulb, 7... Bulb socket, 7a... O-ring groove, 7b... ...flange,
7c...O-ring, 8...Gasket, 9...Gasket holder, 10...Cap.

Claims (1)

[Scope of Claim for Utility Model Registration] A reflector is housed in a lamp housing, a lens is attached to cover the front opening of the lamp housing, and a socket for a light source bulb is attached through the center of the lamp housing. In a vehicle lamp having a structure, (a) a cylindrical socket holder is integrally fixed to the center of the reflector, and (b) an opening is provided on the back surface of the lamp housing to fit into the cylindrical socket holder. (c) a flange is provided on the socket and the flange is brought into contact with the back side of the socket holder; (d) a washer-shaped gasket is fitted onto the socket holder; (e) a back surface of the lamp housing (f) a ring groove is provided on the outer periphery of the socket holder; (g) a short cylindrical seat with a flange is fitted around the socket holder; (h) providing an engaging pawl on the inner periphery of the gasket retainer to engage the gasket retainer; a pawl is engaged with the ring groove; (i) an engagement protrusion is provided at the rear end of the short cylindrical gasket retainer that protrudes in the outer circumferential direction; (j) an inner flange that engages with the engagement protrusion; (k) a cap having a component that abuts against a flange provided on the socket and presses the flange toward the socket holder, and (k) connecting the socket holder and the valve socket;
A vehicle lamp characterized in that it is fitted through an O-ring.