JPH0668217U - Vehicle lighting - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to easily perform an airtight inspection in a lamp chamber of vehicle lamps of various shapes without being affected by the shape of the ventilation part and its surroundings. A standing wall 14 is integrally formed from a lamp body around a ventilation portion 12 formed in the lamp body 2 that communicates the lamp chamber 2a with an external space so as to surround the ventilation portion integrally.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a new vehicular lamp. Specifically, in a vehicular lamp in which a ventilation part communicating with the outside is formed in a lamp body that defines a lamp chamber, by forming a standing wall integrally with the lamp body so as to surround the ventilation part, When performing a so-called airtightness test of the interior of the lamp chamber, it is not necessary to make the connecting part connected to the ventilation part of the airtightness inspection machine correspond to the ventilation part and various shapes around it. An object of the present invention is to provide a new vehicular lamp capable of performing an airtight inspection in a lamp chamber regardless of the shape of the ventilation part and its surroundings.

[0002]

[Prior art]

 BACKGROUND ART A vehicle lamp, for example, an automobile lamp, generally includes a lamp body supported by a vehicle body or a support member fixed to the vehicle body, a lens attached to the lamp body so as to cover a front opening thereof, and the lamp body and the lens body. Consists of a light bulb, etc. placed inside the lamp chamber defined by a lens, and is used to release water that has entered the lamp chamber to the outside, or to evaporate by the heat generated by the light bulb and discharge it outside the lamp chamber, or A hole may be provided in the wall of the lamp body for ventilation to the outside so that the pressure of the lamp does not rise, that is, a ventilation hole that communicates the lamp chamber with the outside. A maze-shaped air passage is formed between the air hole and the outside to prevent water from entering the lamp chamber through this air hole, and the outside and the lamp chamber are connected through this maze-shaped air passage. Invented by It has been.

FIG. 7 shows an example a of such a vehicular lamp.

Reference numeral b denotes a lamp body, and a front lens c is attached so as to cover a front opening portion thereof.

Reference numeral d denotes a light bulb, which is supported by a light bulb mounting hole e formed in a substantially central portion of the lamp body b.

Reference numeral f denotes a ventilation hole formed on the left side of the lamp body b and connecting the inside and outside of the lamp chamber defined by the lamp body b and the front lens c, and in the vicinity of the opening outside the lamp chamber. , A substantially rectangular labyrinth g surrounded by a wall except a part of the lower part is integrally formed with the rumb body b, and the opening end face of the labyrinth g is covered by the maze g. An opening i is defined at the bottom.

Therefore, the ventilation hole f and the opening i are connected via the labyrinth-like ventilation path inside the labyrinth portion g, and ventilation between the lamp chamber and the outside is performed.

[0008]

[Problems to be solved by the device]

 By the way, in the vehicular lamp, the front lens is attached to the lamp body to be integrated, and after the assembly as the vehicular lamp is completed, the airtightness test in the lamp chamber is performed by the inspection machine.

However, the airtightness inspection by such an inspection machine is usually automated.

Since the inspection method is carried out by sending air into the lamp chamber from the ventilation hole by the inspection machine, the ventilation hole is not directly exposed to the outside as in the conventional example, that is, the ventilation hole is a maze. If there is a ventilation part that is connected to the outside through a part and has an opening facing downwards, the shape of the connecting head of the inspection machine that is connected to the lamp and sends air into the lamp chamber is The shape of the surrounding lamp body and the opening position and the opening direction of the ventilation part make it complicated, and moreover, there is not only one type of lamp to be inspected, but also various shapes and sizes. Since the shapes of the lamps are not uniform and each lighting fixture requires a dedicated connecting head, an automated inspection machine cannot handle this, and inspection work is complicated due to replacement of the connecting head. However, there is a problem in that it leads to increase in efficiency, inefficiency, and cost.

[0011]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the vehicular lamp of the present invention has a standing wall formed around the ventilation part communicating with the inside and outside of the lamp chamber on the back of the lamp body.

[0012]

[Action]

 Therefore, in the vehicular lamp of the present invention, regardless of the shape, the opening direction, and the opening position of the ventilation part of the lamp body, the standing wall is formed around the ventilation part of the lamp body of all the lamps. If this is done, the airtight inspection of the lamp can be easily performed by using the connecting head of the inspection machine that is shaped so as to make a close contact with the upper end surface of the standing wall. The inspection can be easily automated.

[0013]

【Example】

 The details of the vehicular lamp of the present invention will be described below with reference to the illustrated embodiments.

1 to 5 show a first embodiment in which the vehicular lamp of the present invention is applied to an automotive headlamp 1.

An automotive headlamp 1 has a container-shaped lamp body 2 having an opening on the front surface and having a horizontally long, substantially rectangular shape when viewed from the front, a lens 3 attached to the lamp body 2 and covering the front surface thereof, The lamp body 2 includes a light bulb 4 and the like arranged at predetermined positions.

The inner surface of the lamp body 2 near the center thereof is formed as, for example, a paraboloid of revolution, and is also a reflecting surface due to aluminum vapor deposition or the like. Is a flat surface.

Reference numeral 5 denotes a lens mounting groove formed so as to open forward at the opening edge of the lamp body 2.

Reference numeral 6 denotes a ventilation hole which is formed on the left side of the rear surface of the lamp body 2 in a substantially central portion in the vertical direction and connects the inside and outside of the lamp chamber 2 a. Surrounds it, and has an enclosure wall 7 that is in the shape of a vertically long, substantially rectangular box when viewed from the rear of the lamp body 2, and inside this is a partition wall 8, 8 with the same height as the enclosure wall 7. Are formed so as to project rearward from the lamp body 2 integrally with the surrounding wall 7. Further, 9 is a notch formed in the lower end surface of the surrounding wall 7.

Reference numeral 10 denotes a plate-shaped lid body formed in a size capable of closing the substantially rectangular opening surrounded by the surrounding wall 7, and is integrally surrounded from four corners of the surrounding wall 7. The position is defined by the positioning protrusions 11, 11, ... Formed so as to project to the rear of the wall 7 by ultrasonic welding or the like to the rear end faces 7a and 8a of the surrounding wall 7 and the partition wall 8. It is attached.

Therefore, the box-shaped ventilation part 12 is defined by the surrounding wall 7, the partition wall 8 and the lid body 10, and the ventilation hole 6 forms a labyrinth-like passage formed by the surrounding wall 7 and the partition wall 8. Through the air passage 7a, the inside of the lamp chamber 2a and the outside are communicated with each other through the notch 9 as an opening.

Reference numeral 13 is a bottom of the surrounding wall 7 and has the same width as that of the ventilation portion 12. The lamp body 2 is integrated backward from the lamp body 2 so as to cover the notch 9 which is the opening of the ventilation portion 12 from below. It is a partition wall formed to protrude.

Reference numeral 14 denotes a standing wall that is integrally formed to project rearward from the lamp body 2 so as to surround the ventilation part 12 and the partition wall 13. Further, the lamp body 14 is further provided than the ventilation part 12 and the partition wall 13. The lamp body 2 has a height higher than the rear surface so that the lamp body 2 projects rearward from the rear surface.

Reference numeral 15 denotes a head portion of an airtightness checker for a vehicle lighting device (not shown), and a plate-like cover 17 made of a flexible material such as synthetic resin is attached to the tip of the air supply tube 16. An air supply hole 18 connected to the air supply tube 16 is provided at an appropriate position (a substantially central portion in FIG. 5).

The airtightness inspection of the vehicle headlamp 1 having the above-described structure is performed as follows.

That is, when the light bulb 4 or the like is attached to the vehicle lamp 1, and the inside and outside of the lamp chamber 2a are communicated with each other only by the ventilation hole 6, that is, when the lamp is actually attached to the vehicle and used. In the same state, as shown in FIG. 5, the cover 17 of the head portion 15 of the airtightness tester is crimped from the rear side of the lamp body 2 to the rear end surface 14a of the standing wall 14 to close the opening of the standing wall 14. Then, compressed air is discharged from the airtightness inspection air through the air supply tube 16 through the air supply hole 18 into the space defined by the standing wall 14, the back surface of the lamp body 2 and the cover 17.

Then, the compressed air discharged from the air supply hole 18 into the space defined by the cover 17 and the standing wall 14 enters the ventilation portion 12 through the notch 9 which is an opening portion, and is formed inside thereof. It enters into the lamp chamber 2a through the ventilation hole 6 through the maze-shaped ventilation path. Therefore, the pressure in the lamp chamber 2a rises due to the compressed air, and the airtightness test of the lamp chamber 2a can be performed by an appropriate method such as monitoring the internal pressure of the lamp chamber 2a.

Next, a second embodiment 1A of the present invention automotive headlamp will be described with reference to FIG.

The vehicle headlamp 1A shown in the second embodiment differs from the vehicle headlamp 1 shown in the first embodiment only in the shape of the standing wall.

Therefore, only the main parts are shown in the drawings, and the explanation is given only for the above differences, and the other parts are attached to the same parts in the first embodiment as the parts in the drawings. The description thereof will be omitted by giving the same reference numeral to the reference numeral.

In the vehicle headlamp 1 A shown in this embodiment, reference numeral 19 is a standing wall formed integrally with the ventilation body 12 and the partition wall 13 so as to project rearward from the lamp body 2. Further, the rearward projection ratio from the lamp body 2 is smaller than that of the ventilation portion 12 and the partition wall 13, that is, the height from the rear surface of the lamp body 2 is lower.

Reference numeral 20 denotes a head portion of an airtightness checker for a vehicle lamp (not shown), which is made of a flexible material such as synthetic resin at the tip of the air supply tube 21 and has a box-shaped cover with an open front end. 22 is attached, and an air supply hole 23 connected to the air supply tube 20 is provided at an appropriate position (approximately the central portion in FIG. 6).

The open end surface 22 a of the cover 22 is formed in the same shape and size as the rear end surface 19 a of the standing wall 19.

The airtightness inspection of the automobile headlamp 1A having the above structure is performed as follows.

That is, a state in which the light bulb 4 and the like are attached to the automobile lamp 1A and the inside and outside of the lamp chamber 2a are communicated with each other only by the ventilation holes 6, that is, the same state as when actually attached to the automobile and used. Then, from the rear side of the lamp body 2 to the rear end surface 19a of the standing wall 19, the opening end surface 22a of the cover 22 of the head portion 20 of the airtightness tester is closed to the opening of the standing wall 19, and from the top of the ventilation part 12 and the partition wall 13. The cover is tightly fitted and pressed, and compressed air from the airtightness test air is defined by the air supply hole 23 through the air supply tube 23 to the standing wall 19, the back surface of the lamp body 2, and the cover 22. Discharge into space.

Then, the compressed air discharged from the air supply hole 23 into the space defined by the cover 22 and the standing wall 19 enters the ventilation portion 12 through the notch 9 and has a labyrinth-like ventilation formed therein. The light enters through the ventilation hole 6 into the lamp chamber 2a through the passage. Therefore, the pressure inside the lamp chamber 2a is increased by the compressed air, and the airtightness inspection of the lamp chamber 2a can be performed by an appropriate method such as monitoring the internal pressure of the lamp chamber 2a.

[0036]

[Effect of device]

 As is clear from the above description, the lamp body, the lens that covers the front opening of the lamp body, and the light source that is arranged in the lamp chamber and that is defined by the lamp body and the lens are provided. A vehicular lamp having a ventilation portion for ventilation to the outside, characterized in that a standing wall is integrally provided so as to surround the ventilation portion of the lamp body.

Therefore, in the vehicular lamp of the present invention, regardless of the shape of the ventilation part of the lamp body, the opening direction, and the opening position, the shape is unified around the ventilation part of the lamp body of all the lamps. If the standing wall is formed, the airtight inspection of the lamp can be easily performed by utilizing the upper end surface of the standing wall and using the connecting head of the inspection machine that is shaped to make a close contact with this. Moreover, the inspection can be easily automated.

Further, since the surrounding of the ventilation part is surrounded by the standing wall, it is possible to more effectively prevent the intrusion of water into the lamp chamber. Particularly, when it is mounted on the vehicle, the water flows down from above the lamp body through the lamp body. It is possible to exclude the incoming water from going towards the vents.

Further, since the upright wall can be formed integrally with the lamp body, it can be dealt with by changing only the die for forming the lamp body, without adding new parts, and in terms of productivity and manufacturing cost. It is advantageous.

It should be noted that the concrete shapes and structures shown in the above-described embodiments and modifications are merely examples for embodying the present invention, and the technical scope of the present invention is limited by these. It is not intended to be interpreted.

[Brief description of drawings]

FIG. 1 is a rear view showing a first embodiment in which the vehicle lighting device of the present invention is applied to a vehicle headlight.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged perspective view of a main part.

FIG. 4 is an enlarged perspective view showing a state in which a lid of a ventilation part is removed.

FIG. 5 is a partially cutaway enlarged side view of a main part for explaining a state of performing an airtightness inspection.

FIG. 6 is a partially cutaway enlarged side view showing a state in which an airtightness test is performed in a second embodiment in which the vehicle lighting device of the present invention is applied to a vehicle headlight.

FIG. 7 is a cross-sectional view showing an example of a conventional vehicle lamp.

[Explanation of symbols]

 1 Vehicle Lamp 2 Lamp Body 2a Lamp Room 3 Lens 4 Light Source 12 Ventilator 14 Standing Wall 1A Vehicle Lamp 19 Standing Wall

Claims (1)

[Scope of utility model registration request] 1. A lamp body, a lens for covering a front opening of the lamp body, and a light source disposed in a lamp chamber defined by the lamp body and the lens, for ventilating the wall portion of the lamp body to the outside. A vehicular lamp having a ventilation part formed therein, wherein a standing wall is integrally provided so as to surround the ventilation part of the lamp body.