JPH0729706U - Vehicle lighting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vehicle lamp that can prevent water from entering without increasing the number of parts and the number of assembly steps. [Structure] The lamp includes a body 12 that holds a light source and a body.
With a lens mounted on the front side of 12, body 12
A breathing structure portion 18 that communicates the inside and the outside is provided. The breathing structure portion 18 is formed integrally with the body 12, covers the outer periphery of the air hole 20 formed in the body 12, and defines an outer wall 24 that defines an air passage 22 extending downward, and an air passage. The inner wall 26 has a stepwise extending inner wall 26. The inner wall 26 is
A first step portion 34 provided at the lower end of the side wall portion 32 of the outer wall 24, a second step portion 36 provided at the back side of the air passage 22, and a first step portion 34.
And a second connecting portion 38 for connecting the second step portion 36. A second air passage 40 having an open lower end is formed by the outer peripheral surface of the connecting portion 38 and a part of the inner peripheral surface of the side wall portion 32 of the outer wall 24. The second step portion 36 includes the first and second air passages 28, 4
A communication hole 42 that communicates between 0s is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp having a body provided with a breathing structure portion communicating between the inside and the outside.

[0002]

[Prior art]

 Since the vehicle lighting may be turned on for a relatively long time at night, for example, the temperature of the lighting becomes extremely high when the light source is turned on. Expands and the internal pressure increases. Such a pressure difference between the inside and the outside is not preferable for the lamp, and, for example, the internal air that has become high in temperature may condense due to a decrease in temperature, which may impair the function of the lamp. Therefore, this type of lamp is usually provided with a breathing structure that sucks and exhausts air according to the pressure difference between the inside and outside to eliminate the pressure difference between the inside and outside.

8 and 9 show a typical example of this type of respiratory structure. The breathing structure shown in FIG. 8 includes a circular air hole 2 formed in the body 1 and an annular protrusion formed integrally with the body 1 at the periphery of the air hole 2 so as to project outward. 3 and a tube 4 that is locked to the annular protrusion 3 and has open ends. However, since the tube 4 is used in the breathing structure portion having such a configuration, the number of components is increased and the work of assembling the tube 4 is required.

On the other hand, the breathing structure shown in FIG. 9 has a semi-cylindrical wall that forms an air hole 2 formed in the body 1 and an air passage 5 that covers the outer periphery of the air hole 2 and has an open lower end. The wall 6 is formed integrally with the body 1. According to the breathing structure part having such a configuration, there is an advantage that the number of parts and the number of assembling steps do not increase as compared with the breathing structure part of FIG.

However, the breathing structure shown in FIG. 9 has the technical problems described below.

[0006]

[Problems to be solved by the device]

 That is, in the breathing structure shown in FIG. 9, the air passage 5 extends downward from the air hole 2 and an opening is provided at the lower end of the air passage 5 in order to prevent the entry of foreign matter. However, there is a problem that it invades into the body 1 through the air passage 5 and the air hole 2. For such a problem, for example, if a breathable filter or the like is filled in the air passage 5, it is possible to prevent the intrusion of water, but such a solution means that the number of parts is increased and the number of assembling steps is also increased. Will be done.

The present invention has been made in view of such conventional problems, and an object thereof is to prevent water from entering without increasing the number of parts and the number of assembling steps. The purpose is to provide lighting equipment.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a vehicular lamp including a body for holding a light source, a lens mounted on the front surface of the body, and a breathing structure communicating between the inside and the outside of the body. The breathing structure is integrally formed with the body, covers the outer periphery of the air hole formed in the body, and defines an air passage extending downward, and an outer wall that defines a step inside the air passage. An inner wall extending, the inner wall having a first step portion provided at an edge of a lower end opening of the air passage, a second step portion provided at a back side of the air passage, and first and And a connecting portion that connects the second step portion to each other, and a communication hole that connects the air hole side and the outside is provided in the second step portion.

[0009]

[Action]

 According to the vehicular lamp having the above structure, the breathing structure portion is formed integrally with the body, covers the outer periphery of the air hole formed in the body, and forms an air passage extending downward, and the air passage. An inner wall extending stepwise inside the inner wall of the air passage, the inner wall having a first step portion provided at the edge of the lower end opening of the air passage, and a second step portion provided at the back side of the air passage. The first and second stepped portions have a connecting portion, and the second stepped portion has a communication hole for communicating the air hole side with the outside. Since the first step prevents entry into the body and the inner wall is formed in multiple steps to form a labyrinth, the possibility of water entering the body through the communication hole is extremely low. Become.

[0010]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 4 show a first embodiment of a vehicular lamp according to the present invention. The vehicle lamp shown in the figure includes a body 12 that holds the light source lamp 10, and a lens 14 that is mounted on the front side of the body 12, and the light source lamp 10 is provided on the periphery of the light source lamp 10. A reflector 16 that reflects the emitted light to the lens 14 side is arranged.

In the vehicle lamp having the above-described structure, the body 12 is provided with a breathing structure portion 18 communicating with the inside and outside of the body lamp so as to be located on the back side thereof. The breathing structure portion 18 of this embodiment is provided with two of the same structure so as to be positioned substantially on the diagonal line in the left-right direction with the light source lamp 10 interposed therebetween. 3 to 4 show details of the breathing structure 18.

The breathing structure 18 shown in these figures is formed integrally with the body 12, and covers an outer periphery of the air hole 20 formed in the body 12 and has an air passage 22 extending downward. It has an outer wall 24 that is separated and an inner wall 26 that extends stepwise inside the air passage 22. The air hole 20 is formed in a substantially convex shape, and the square-shaped hole portion on the upper part thereof serves as a first air passage 28 forming a part of the air passage 22.

The outer wall 24 is located above the first air passage 28, and has a substantially semicircular plate-shaped upper wall portion 30 extending horizontally so as to be orthogonal to the body 12, and an outer wall of the upper wall portion 30. It is configured by an arcuate side wall portion 32 vertically provided along the peripheral edge. The inner wall 26 is provided at the lower end of the side wall portion 32 of the outer wall 24, and is provided on the back side of the air passage 22 and a first semi-disc-shaped first step portion 34 provided so as to face the upper wall portion 30. The second step portion 36 is formed, and the connecting portion 38 that connects the first step portion 34 and the second step portion 36 is formed.

The connecting portion 38 is formed in a substantially upright state, and the outer surface thereof is curved in a shape along the outer peripheral surface of the cylinder, and the outer peripheral surface of the connecting portion 38 and the side wall portion 32 of the outer wall 24 are formed. A cylindrical hole having an opening at the lower end is separated from a part of the inner peripheral surface, and this hole serves as a second air passage 40 forming a part of the air passage 22. The second step portion 36 is provided at a position that closes the upper end of the second air passage 40, and a communication hole 42 that communicates between the first and second air passages 28, 40 is provided at the center thereof. ing.

The breathing structure portion 18 having such a structure is integrally formed with the body 12 by using a two-slide die 44 different from the molding die of the body 12, as shown in phantom in FIG. In this case, the slide die 44 may be of a shape in which a protrusion corresponding to the shape of the communication hole 42 is provided at the tip of a cylindrical shape corresponding to the second air passage 40. Now, in the vehicle lamp having the breathing structure portion 18 configured as described above, the inside and outside of the body 12 have the air holes 20 and the air passages 22 (the first air passage 28, the communication hole 42, the second air passage 40). Is configured to communicate with each other), the breathing function of the lamp is obtained, and the pressure difference between the inside and outside of the body 12 is eliminated. At this time, in the exhalation structure portion 18 of the present embodiment, the first step portion 34 of the inner wall 26 is provided at the edge of the lower end opening of the air passage 22, so that the water splashing from below is absorbed by the first step portion 34. The stepped portion 34 is prevented from entering the inside of the body 12.

Further, even if water enters the second air passage 40, the second step portion 36 is provided on the upper end side of the passage 40, so that water passes through the communication hole 42 and the body 12 The possibility of invading inside is greatly reduced. That is, in the breathing structure portion 18 of the present embodiment, the inner wall 26 is composed of the first step portion 34, the connecting portion 38, and the second step portion 36. Since this is a maze, it jumps up from below. It is possible to almost completely prevent the intrusion of incoming water, and such an effect can be obtained without increasing the number of parts and the number of assembly steps.

FIG. 5 and FIG. 6 show a second embodiment of the vehicular lamp according to the present invention, and the same or corresponding reference numerals as those of the above-mentioned first embodiment are attached thereto. Only I will explain. In the example shown in the figure, the shape of the air hole 20a of the breathing structure portion 18a is replaced with the convex shape of the first embodiment, and the shape is such that a circle is connected to the upper center of a rectangle, and the first air passage 28a is a cylinder. It is formed into a shape.

Further, the second step portion 36a is formed in a two-step shape that is divided into two at the center of the disk, and a communication hole 42a is provided in the upper step side portion. The second passage 40a of the breathing structure portion 18a configured as described above can also be integrally molded with the body 12 by using the slide mold 44a having a shape shown by a phantom line in FIG. The same working effect as is obtained.

FIG. 7 shows a third embodiment of the vehicular lamp according to the present invention, which is given the same reference numeral as or corresponding to that of the first embodiment described above, and only the characteristic points will be described below. . In the example shown in the figure, the second step portion 36b of the breathing structure portion 18b is formed in a state in which the center of the disc is cut out, and the cut out semicircular portion is used as the communication hole 42b. The second passage 40b of the breathing structure portion 18b configured as described above can also be integrally molded with the body 12 by using the slide mold 44b having the shape shown by the phantom line in FIG. The same effect as the example can be obtained.

[0020]

[Effect of device]

 As described above in detail in the embodiments, the vehicular lamp according to the present invention can prevent water from entering without increasing the number of parts or the number of assembling steps.

[Brief description of drawings]

FIG. 1 is a sectional view of a lamp according to a first embodiment of a vehicle lamp of the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is an enlarged perspective view of a portion A of FIG.

FIG. 4 is a cross-sectional view of the main parts of FIG.

FIG. 5 is a perspective view of a breathing structure showing a second embodiment of the vehicular lamp according to the present invention.

6 is a cross-sectional view of the main parts of FIG.

FIG. 7 is a sectional view of a breathing structure showing a third embodiment of the vehicular lamp according to the present invention.

FIG. 8 is a sectional view of a main part showing an example of a breathing structure part of a conventional vehicle lamp.

FIG. 9 is a cross-sectional view of main parts showing another example of the breathing structure part of the conventional vehicle lamp.

[Explanation of symbols]

 10 Light source lamp 12 Body 14 Lens 18, 18a, 18b Breathing structure part 20, 20a Air hole 22 Air passage 24 Outer wall 26 Inner wall 28, 28a First air passage 30 Upper wall part 32 Side wall part 34 First step part 36, 36a, 36b 2nd step part 38 Connection part 40,40a, 2nd air passage 42,42a, 42b Communication hole

Claims (1)

[Scope of utility model registration request] 1. A vehicular lamp having a body for holding a light source and a lens mounted on the front surface of the body, and having a breathing structure portion communicating the inside and the outside of the body, wherein the breathing structure portion is the body. An outer wall that is integrally formed with the body, covers an outer periphery of an air hole formed in the body, and defines an air passage that extends downward, and an inner wall that extends stepwise inside the air passage. A first step portion provided at the edge of the lower end opening of the air passage, a second step portion provided at the back side of the air passage, and a connection between the first and second step portions. And a communication hole that connects the air hole side and the outside to the second step portion.