JPS6348005Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an automobile headlamp, and particularly to a headlamp equipped with a waterproof cover.

[Background of the idea]

A conventional headlight of this type has a lens b disposed in front of a reflector a, and a bulb d attached to a mounting part a' of the reflector a, as shown in FIGS. 1 and 2, for example. Installing valve holder c. The bulb d is arranged in a lamp chamber e defined by a reflector a and a lens b. A waterproof cover f is attached to the bulb holder c to prevent rainwater from entering the lamp chamber e. The waterproof cover f consists of a main part g, a cylindrical part h formed in the center of the main part, and a skirt part i formed on the outer periphery of the main part g, and the cylindrical part h is connected to the valve d. At the same time, the skirt part i is fitted to the bulb holder c and extends to the mounting part a' of the reflector a, so that the main part g is fitted to the mounting part a' of the reflector a and By closing the space between the bulb bases d', it is possible to prevent rainwater from entering the lamp chamber e. In addition, the waterproof cover f is provided with a drainage part j for draining water that should have entered the lamp chamber, and a drainage part j is provided to ventilate the inside and outside of the lamp chamber to prevent clouding of the lens b. A ventilation section k is provided. The water drain part j
constitutes a space formed between the main part g and the skirt part i, one end of which communicates with the interior of the lamp chamber e, and the other end of which communicates with the outside of the lower part. The ventilation section k is formed in a bulge l protruding from the side of the skirt section i, and one end thereof communicates with the inside of the lamp chamber e and the other end communicates with the outside of the side.

By the way, in the conventional example shown above, the reflector a
Since the mounting portion a' and the bulb holder c are circular in shape, the waterproof cover f is also formed in a circular shape correspondingly. For this reason, for example, if the user installs the waterproof cover f when replacing the bulb,
Since the water drain part j and the ventilation part k may rotate and shift from their predetermined positions and be located at the top, water may enter the lamp chamber from the water drain part j and the ventilation part k. . That is, since the water drain hole and the ventilation hole cannot be positioned, there is a problem that the waterproof cover f cannot be attached to the valve holder c at an accurate position.

[Purpose of invention]

In view of the above circumstances, the present invention allows the waterproof cover to be attached to the reflector at an accurate position.
It is therefore an object of the present invention to provide a headlamp for an automobile that can prevent rainwater etc. from entering the lamp chamber.

[Summary of the idea]

This invention allows Coser to place the drainage part and ventilation part in the specified position even if he or she installs the waterproof cover in the wrong position when installing the waterproof cover on the valve holder. Therefore, the reflector allows the mounting position of the waterproof cover in the circumferential direction. That is, the present invention forms grooves that communicate with each other in the bulb holder and the mounting part of the reflector, and when the waterproof cover is attached to the reflector, the space formed by the groove and the reflector is used as a water drainage part. This feature makes it possible to achieve the above object.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

As shown in FIG. 3, this embodiment includes a reflector 1 having a lens 2 disposed in its front opening, a bulb holder 3 attached to a mounting portion 11 of the reflector 1 and having a bulb 4 mounted thereon, and the bulb holder 3. 3
A waterproof cover 5 is provided.

The reflector 1 has a mounting groove 12 formed at the periphery of its front opening, and the leg portion 21 of the lens 2 is attached to the mounting groove 12 with an adhesive 6. A mounting portion 11 is formed at the rear of the reflector 1 for mounting the bulb holder 3. The mounting part 1
1 forms an inclined surface 11a which gradually narrows as the outer periphery of the rear part of the reflector reaches the rear, and the rear end of the inclined surface 11a extends rearward to form a funnel shape. The bulb holder 3 has a cylindrical body that can fit into the mounting part 11 of the reflector,
A hook portion 31 is formed on the outer periphery of the rear portion. The bulb holder 3 is held by a holding member 7 with the bulb 4 inserted thereinto, and is attached to the attachment portion 11 by being fitted thereinto. At this time, the glass tube portion 41 of the bulb 4 is disposed within the lamp chamber 10 defined by the reflector 1 and the lens 2.

On the other hand, the waterproof cover 5 is a molded product made of rubber, and includes a main part 51 that can fit into the inner periphery of the bulb holder 3, and a cylindrical part 52 that protrudes inside the central part of the main part 51. , and a skirt portion 53 formed on the outer periphery of the main portion 51 toward the front. and,
The cylindrical part 52 is fitted into the valve cap 42 that protrudes rearward from the valve holder 4, the main part 51 is fitted into the inner periphery of the rear part of the valve holder 4, and the skirt part 53 is fitted into the valve holder 4.
The lamp is attached to the outer periphery of the lamp and extends to the mounting portion 13, thereby preventing water from entering the lamp chamber 10. An engaging protrusion 54 is provided on the inner peripheral part of the skirt part 53, and when the waterproof cover is attached, the engaging protrusion 54 engages with the hook part 31 of the valve holder 4, so that the waterproof cover 5 is attached to the valve holder. It is designed not to fall off from 4 onwards.

Accordingly, in the present invention, continuous grooves 8 are formed in the lower part of the outer circumference of the bulb holder 4 and the attachment part 11 of the reflector 1. That is, as shown in FIG. 6, the groove 8 is formed along the axial direction on the outer periphery of the lower part of the bulb holder 4, and is connected to a first groove 81 having a concave cross section and the outer periphery of the mounting portion 11. It is formed in the same shape as the first groove 81 at a position corresponding to the first groove 81, and one end thereof is formed in the position corresponding to the first groove 81.
, and the other end is located in front of the tip of the waterproof cover skirt part 53 in the mounting part 11.
It consists of a groove 82. When the waterproof cover 5 is attached to the bulb holder 3, the space formed by the skirt portion 53 and the groove 8 constitutes a water drain portion 9.

Further, the inner end of the water draining portion 9 is communicated with the inside of the lamp chamber 10. That is, a notch 32 is formed along the axial direction in the inner peripheral part of the rear end of the bulb holder 3, and one end of the notch 32 communicates with the inside of the lamp chamber 10, and the other end communicates with the skirt part 53 and the main part 51. It communicates with the inner end of the water drain part 9 through the space between. Therefore,
The water draining part 9 can have not only a drainage function but also a ventilation function for ventilating the inside and outside of the lamp chamber 10.

Furthermore, a waterproof wall 1 is provided on the outer periphery of the mounting portion 11.
3 is formed. The waterproof wall 13 is formed to extend straight rearward on the inclined surface 11a of the mounting portion 11 and surround the skirt portion 53 of the waterproof cover 5.
When the waterproof cover 5 is assembled to the valve holder 3, by surrounding the skirt portion 53,
Water from the outside can be prevented from entering into the lamp chamber 10. Therefore, in the illustrated embodiment, the waterproof wall 13 is formed in an annular shape, but it is sufficient if it is disposed at least at a position facing the groove 8 and the upper half of the outer periphery of the skirt portion 53.

In the headlight configured as described above, when the waterproof cover 5 is assembled to the bulb holder 4, the waterproof cover 5 can be attached to the bulb holder 4 and the reflector 1 without worrying about the mounting position in the circumferential direction. . That is, the bulb holder 4 and the reflector 1
Since a groove 8 is formed in the lower part of the waterproof cover, when the waterproof cover is attached, a water draining part 9 is inevitably formed by the skirt part 53 and the groove 8, and furthermore, water can not enter that position. Since the waterproof cover 5 is fixed at the bottom so that it does not move, even if the waterproof cover 5 shifts in the circumferential direction, it will not be affected by this. In addition, since the inner end of the water draining portion 9 communicates with the inside of the lamp chamber 10 via the notch 32 formed in the bulb holder 4, the water draining portion 9 has a function other than the water draining function.
It can also have a ventilation function for ventilating the inside and outside of the lamp chamber 10.

Therefore, the user can easily and reliably attach the waterproof cover 5. Furthermore, since the waterproof wall 13 is formed on the mounting portion 11, water from above or water splashing up can be reliably prevented from entering the light chamber 10 by hitting the waterproof wall 13.

FIG. 7 shows another embodiment of the automobile headlamp according to the present invention. In this case, the skirt portion 53
The groove 8 corresponds to the waterproof cover 5 that extends up to the inclined surface 11a of the reflector mounting portion 11.
is formed by a first groove 81 and a second groove 82 provided on the lower outer circumference of the bulb holder 3 and the mounting part 11, and the second groove 82 is formed to extend to the inclined surface 11a of the mounting part 11. ing. That is, the second groove 82 is formed by notching a concave shape in the lower outer peripheral portion of the attachment portion 11 and recessing the inclined surface 11a from the concave portion along the front-rear direction of the inclined surface. Therefore, the skirt portion 53 is connected to the inclined surface 11
Even if it extends to a, the groove 8 and the skirt part 53
Since the space formed by the drain section 9 is constituted by the drain section 9, basically the same effect as the first embodiment can be obtained.

[Effect of idea]

As described above, according to the present invention, a water drain part can be formed by attaching the waterproof cover to the valve holder, so the user can easily and accurately attach the waterproof cover, and also prevent water from entering. It has the advantage of being able to reliably prevent this.

[Brief explanation of drawings]

FIG. 1 is a rear view showing an example of the configuration of a conventional automobile headlamp, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. FIG. 3 is a longitudinal cross-sectional view showing an embodiment of an automobile headlamp according to the present invention, and FIG. 4 is a cross-sectional view of the main parts.
5 and 6 are a rear view and an enlarged perspective view showing the state with the waterproof cover removed, and FIG. 7 is a longitudinal sectional view showing another embodiment of the automobile headlamp according to the present invention. 1...Reflector, 11...Mounting part, 2...Lens,
3... Valve holder, 4... Valve, 5... Waterproof cover, 51... Main part, 52... Cylindrical part, 53... Skirt part, 8... Groove, 9... Drain part, 13... Waterproof wall.

Claims (1)

[Scope of utility model registration request] A reflector with a mounting part formed at the rear and a lens arranged on the front, a bulb holder attached to the mounting part of the reflector and equipped with a bulb to be placed inside the lamp chamber, and a waterproof cover attached to the bulb holder. In an automobile headlamp, the waterproof cover has a cylindrical portion fitted to a base of the bulb, and a skirt portion that covers the outer periphery of the bulb holder and extends to the mounting portion of the reflector. Continuous grooves are formed in the lower part of the outer periphery of the holder and the reflector mounting part, and when the waterproof cover is attached to the bulb holder, the space formed by the groove and the skirt part of the waterproof cover is made of water. The water drain part is configured as a drain part, the inner end of the water drain part communicates with the inside of the lamp chamber, and a waterproof wall extends rearward around the outer periphery of the reflector mounting part, and the waterproof wall extends at least around the outer periphery of the skirt part. A headlamp for an automobile, characterized in that the headlamp is disposed in an upper half portion and in a position facing the groove.