JPH0711364Y2 - Vehicle lighting - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a vehicular lamp, and more particularly to a structure of a hole through which a cord for supplying electric power to a light source is inserted.

[Problems to be Solved by Prior Art and Invention]

In a conventional vehicular lamp, a cover made of rubber or the like is attached to a rear opening of a lamp body that houses a light source and a reflecting mirror therein. A hole through which a cord for supplying electric power to the light source is inserted is formed at the rear end of the cover.

However, it is necessary to measure waterproofness so that water does not enter the interior of the lamp during rainy weather or car washing through the cord insertion hole formed in this cover. In addition to the holes for inserting the cords, it is necessary to form air holes in the cover to allow air to circulate inside the lamp to prevent fogging of the lens, which increases the number of holes. It was Furthermore, when the cover is removed, the cord is also pulled at the same time, and the cord becomes an obstacle when the cover is attached and detached.

The present invention has been made in view of the above problems. It is not necessary to measure the waterproofness of the cord hole, the number of holes that can be opened in the cover can be reduced, and the cord does not interfere when the cover is attached and detached. The purpose is to provide a lamp.

[Means for saving problems]

The present invention has been made to achieve the above object,
An outer lens is attached to the front of the lamp body that houses the light source and the reflector inside, and a rubber cover is attached to the rear of the lamp body in the front-rear direction. A second air opening is provided in the cover, and a notch is formed at each engaging edge portion of the lamp body and the cover at a position below the lamp so that both notches face each other and open downward. The second, which constitutes the hole
A cord for supplying electric power to the light source is inserted into the air hole of.

[Action]

By passing the cord through the second air hole, both the air hole and the cord hole can be used together. The hole through which the cord is inserted works in cooperation with the first air hole on the upper side to allow the air inside and outside the lamp to flow, and the breathing action of the lamp (moisture and the like due to a change in internal pressure due to lighting and extinguishing the lamp) Phenomenon that invades inside)
Since it is a structure that opens downward at the lower position of the lamp, it is difficult for water to enter, and it also serves as an air hole, so there is no need to achieve waterproofness as in the conventional case. Further, the number of holes formed in the cover can be reduced by using the air holes and the code holes as well. Furthermore, the hole through which this cord passes is configured so that both the notches of the lamp body and cover face each other, and there is a gap between the lamp body and the cover compared to the case where notches are formed only on one side of the lamp body and cover. The width of the engaging part does not change, the sealing property between the lamp body and the cover does not deteriorate, and only one notch needs to move when attaching or detaching the cover, the cord can maintain its position as it is, It doesn't get in the way of putting on and taking off.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 (A) is a vertical cross-sectional view of an automobile headlamp. As shown in this figure, inside a lamp body 10 made of resin, a lamp bulb 12 serving as a light source, an elliptical reflecting mirror 14, and a collector. Projection unit 18 with integrated optical lens 16
Is stored. That is, the filament of the lamp bulb 12 is arranged at the inner focal point of the elliptical reflecting mirror 14.
The lamp bulb 12 is connected to a connector 22 and a cord 24 via a base 20, and the cord 24 is guided to the outside through an air hole 26 which also serves as a cord hole and is connected to an external connector 28. By connecting this connector 28 to the vehicle body side of the automobile, electric power is supplied to the lamp bulb.
Supplied to 12. A cylindrical connecting fitting 30 called a holder is attached around the front of the elliptical reflecting mirror 14, and a condenser lens 16 is attached to the front surface of the connecting fitting 30 by ultrasonic welding. The focus of this condenser lens 16 is the elliptical reflecting mirror.
Focused on 14 outer focal points.

An outer lens 32 is attached to the front portion of the lamp body 10 by engagement, and is positioned in front of the condenser lens 16. A cover 34 made of rubber is engaged with and attached to the rear opening of the lamp body 10. Cover 34
An air hole 36 is formed in the upper rear part of the lamp on the lower side of the eaves-shaped portion so that the air heated inside the lamp flows out. Further, at the lower position of the lamp, notches 38 and 40 are formed in the engaging edges of the lamp body 10 and the cover 34 (see FIGS. 1B and 1C), and the notches 38 and 40 face each other. To form the air holes 26. External air enters the inside of the lamp through the air holes 26. The invading air convects inside the lamp and flows to the outside from the air hole 36 in the upper part, and prevents the condenser lens 16 or the outer lens 32 from being fogged.

FIG. 2 is a horizontal sectional view of the projection unit 18 shown in FIG. The lamp bulb 12 has an opening behind the elliptical reflecting mirror 14.
Flange 44 inserted from 42 and formed on the outer periphery of the base 20
A notch 46 formed in the edge of the opening 42 (see FIG. 3)
Is adapted to engage with. In this engaged state, the set spring 48 presses the flange 44 to fix the lamp bulb 12 to the elliptical reflecting mirror 14.

FIG. 3 is a perspective view showing the assembly of the set spring 48.
The set spring 48 is made of a single wire as a whole, and is bent in a substantially U shape. The bottom of the U-shape is bent by 90 degrees with respect to the entire U-shape,
The tip of the bent portion 50 is the opening 42 of the elliptical reflecting mirror 14.
Is inserted in a small groove 52 formed at the edge of the. This edge 52
A screw hole 54 is formed in the vicinity of, and a screw 56 is screwed into the screw hole 54, and the head 58 of the screw 56 presses the tip of the bent portion 50. As a result, the set spring 48 becomes rotatable around the tip of the bent portion 50. One of the U-shaped arms of the set spring 48 is short and the other is long. The flange 44 of the base 20 is pressed by the central portions of the shorter arm 60 and the longer arm 62. The end of the longer arm 62 is bent upward at a right angle, and the bent portion 64 is locked by the hooker 66. The hooker 66 is attached by another screw 70 to another screw hole 68 formed in the vicinity of the opening 42 of the elliptical reflecting mirror 14 and on the opposite side of the screw hole 54. The hooker 66 has a substantially L-shaped cutout groove 71,
The bent portion 64 is adapted to be locked. This locking can be performed by a person pressing a pressing ring 73 formed at the tip of the bent portion 64 with a finger. By pressing with your finger, the set spring
The lever 48 acts as a lever, and the central portions of the short arm 60 and the long arm 62 press the flange 44 of the mouthpiece with a strong force.

Also, a black paint 72 is applied to the outer peripheral portion of the outer lens 32.
The light is prevented from leaking from the outer peripheral portion to the outside. This is shown in FIG. However, there is an engaging portion with the lamp body in this outer peripheral portion, and the engaging is performed via the sealant 74. The sealant 74 exists in the deep portion of the engaging portion and may not exist in the shallow portion. In this case, light leaks out from the portion where the sealant 74 does not exist. In order to eliminate this leakage, not only the front surface and the outer peripheral surface of the flange-shaped projection 76 formed on the outer lens 32 at the edge of the engaging portion but also a part of the rear surface, that is, the end portion of the rear surface is coated with the black coating 72. Need to be applied. Therefore, as shown in Fig. 5, black coating
When performing 72 by spray painting 78 etc., the outer lens 32
In addition to providing a mask 80 on the front surface for transmitting the light, another mask 82 that covers the rear surface of the flange-like projection 76 and the surface of the seal leg 32a of the outer lens behind the flange-like projection is provided on the mask 80. Apply black paint 72 from. The mask 82 may be an alternative to a jig that supports the outer lens 32 during painting.

As described above, according to the present embodiment, the notch 38 of the engaging edge portion on the lamp body 10 side and the notch 40 of the engaging edge portion on the cover side face each other to form the air hole 26. Since 26 also serves as a code hole, since this hole originally allows air to pass through, it is not necessary to measure waterproofness, and since it is not necessary to separately provide an air hole, the number of holes can be reduced. Further, when the cover 34 is attached and detached, the work can be performed with the cord 24 left in the notch 38 of the lamp body 10, so that the cord 24 does not interfere with the attachment and detachment.

In the above embodiments, the headlamp in which the projection unit including the elliptical reflecting mirror is arranged in the lamp body has been described, but a reflecting mirror capable of aiming may be arranged instead of the projection unit.

[Effect of device]

As described above, according to the present invention, since the air inside and outside the lamp is positively distributed through the first air hole on the upper side and the second air hole on the lower side, the breathing action of the lamp is improved. Certainly prevented.

In addition, the number of holes formed in the cover can be reduced by also serving as the second air hole on the lower side and the code hole.

Further, since the second air hole is located on the lower side of the lamp and opens downward, it is not necessary to ensure waterproofness.

Further, since the cord extending from the light source is led out of the lamp from the second air hole located below the lamp, the size of the lamp in the front-rear direction can be made compact, and water that has entered the lamp can be transmitted through the cord and passed through the lamp. Easily discharged outside.

Further, since the second air hole is configured such that both the notches of the lamp body and the cover face each other, the cord does not interfere when the cover is attached to and detached from the lamp body.

Further, since the second air holes are formed by the notches formed in the engaging edge portions of the lamp body and the cover facing each other and cooperating with each other, the engagement margin of the engaging portion between the lamp body and the cover is formed. Is the same as the case where no air hole is formed, and therefore the sealing performance is not impaired as compared with the structure of No. 2 in which no air hole is provided.

Further, the notch on the side of the lamp body is convenient for temporarily fixing the cord, and the work for engaging the cover becomes easier and faster.

[Brief description of drawings]

FIG. 1 (A) is a longitudinal sectional view showing an embodiment of a vehicular lamp of the present invention, and FIG. 1 (B) is a perspective view of the lamp body of FIG. 1 (A) seen from the rear, FIG. 1C is a perspective view of the cover of FIG. 1A as seen from the front, FIG. 2 is a horizontal sectional view of the projection unit housed inside the lamp body of FIG. 1A, and FIG. FIG. 2 is an exploded perspective view of the set spring provided in the rear opening of the elliptical reflecting mirror, FIG. 4 is a view showing the outer peripheral portion of the outer lens of FIG. 1, and FIG. 5 is the outer lens of FIG. It is a figure which shows a mode that a black coating is given to. 10 ...... Lamp body, 12 ...... Lamp bulb, 14 ...... Ellipsoidal mirror, 16 ...... Condensing lens, 18 ...... Projection unit, 20 ...
… Base, 22 …… connector, 24 …… cord, 30 …… connecting metal, 32 …… outer lens, 34 …… cover, 26,36…
… Air holes, 38, 40, 46… Notches, 42… Rear opening of elliptical reflector, 44… Flange, 48… Set spring, 5
6,70 …… Screw, 66 …… Hooker, 72 …… Black paint, 80,8
2 …… Mask.

Claims (1)

[Scope of utility model registration request] 1. A vehicular lamp in which an outer lens is attached to a front portion of a lamp body which houses a light source and a reflecting mirror, and a rubber cover is attached to a rear portion of the lamp body by engaging in a front-rear direction. , The first position on the cover at the upper position of the lamp
Notches are formed in the engaging edge portions of the lamp body and the cover at the lower position of the lamp, and the notches face each other to form a second air hole that opens downward. A cord for supplying power to the light source is inserted through the second air hole.