JP2000315408A - Light for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light for vehicle capable of preventing a lens from fogging up by limiting heat from flowing in a region of a function not used in a housing when a plurality of functions are provided in the housing. SOLUTION: This light for vehicle 10 comprises a housing 11 mounted on a body of an automobile, a lens 12 closely mounted on the housing 11 so as to cover an open outer surface of the housing, and a plurality of bulbs 14a, 14b, 14c respectively mounted on a plurality of regions on an inner side of the housing 11 through sockets 13a, 13b, 13c arranged in each of the regions. The light for vehicle 10 is structured so as to provide barriers 17a, 17b, 18a, 18b in boundary parts of each of the regions in order to limit an air flow between the regions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp having a plurality of functions such as a traveling beam, a passing beam, and a direction indicator.

[0002]

2. Description of the Related Art Conventionally, such a vehicular lamp is constructed, for example, as shown in FIG.

In FIG. 5, a vehicular lamp 1 is configured to have three functions, for example, a traveling beam, a passing beam, and a direction indicator, and is mounted on a vehicle body (not shown) of an automobile. 2, a lens 3 that covers an open front surface of the housing 2, and a socket 4a, a socket 4a, a rear end of the housing 2 in each region of the traveling beam portion 2a, the passing beam portion 2b, and the direction indicator portion 2c in the housing 2. Valves 5a, 5b, 5c mounted via 4b, 4c, reflectors 6a, 6b disposed around each of the valves 5a, 5b, a traveling beam 2a, a passing beam 2b, and a direction indicator 2c. Extensions 7a, 7b, 7c that partition the respective areas.

[0004] The lens 3 is attached to the housing 2 by welding or the like, and the internal space of the housing 2 is sealed. The sockets 4a, 4b, 4c
Among them, the passing beam socket 4b is disposed in the housing 2 in the case of the drawing. The reflectors 6a and 6b are configured to reflect light from the bulbs 5a and 5b, respectively, and guide the light to the front of the automobile. The extensions 7a, 7b, 7c are connected to the traveling beam 2
a, by partitioning the respective areas of the low beam part 2b and the direction indicator part 2c, mutual leakage of light between the respective areas is prevented.

[0005] According to the vehicle lamp 1 having such a configuration,
When the bulbs 5a, 5b or 5c are turned on, the traveling beam, the passing beam, or the direction indicator functions.

[0006]

However, in the vehicle lamp 1 having such a configuration, the extensions 7a, 7b, 7c are provided in the respective areas of the traveling beam 2a, the passing beam 2b, and the direction indicator 2c. And has a function only to prevent leakage of light between them, and does not hermetically divide each region.

Therefore, for example, if the bulb 5b is turned on when a frequently used passing beam is used, the lighting causes the bulb 5b to generate heat and the passing beam portion 2b
The air inside is heated. Then, as shown by the arrow A in FIG.
Through the gap between c and the housing 2 or the lens 3, it flows into the other unused traveling beam portion 2 a or the direction indicator portion 2 c. At this time, if the surface of the lens 3 is cooled by rain or a car wash, the warm air flowing into the traveling beam portion 2a or the direction indicator portion 2c is rapidly cooled when the rear surface of the lens surface 3 is touched. As a result, the moisture contained in the warm air is condensed on the surface of the lens surface 3 and adheres to the inner surface of the lens 3, so that the lens 3 becomes cloudy.

In view of the above, the present invention restricts the flow of warm air into an unused function area in a housing, even if one housing has a plurality of functions, and It is an object of the present invention to provide a vehicular lamp in which no fogging occurs.

[0009]

According to a first aspect of the present invention, there is provided a housing mounted on an automobile body, and a lens closely attached to the housing so as to cover an open outer surface of the housing. A plurality of bulbs attached to a plurality of areas inside the housing through sockets arranged in each area, respectively, in a vehicle lamp, at a boundary portion of each of the above areas. hand,
This is achieved by a vehicular lamp characterized by comprising a partition for restricting air flow between regions.

In the first aspect, since a plurality of regions inside the housing are partitioned by the partition walls, the air flow between the regions is restricted. Even if the air in the area is heated by the heat generated by the passing beam valve, the heated air is not used because the partition exists between the other unused areas. Inflow into the area will be restricted. Therefore,
Since it is difficult for the heated air in the area to flow into other unused areas, even when the temperature of the lens is lowered due to, for example, rain or a car wash, the heated air is reduced by a small amount. Even if the water flows into another unused area and forms dew on the inner surface of the lens, the dew is reduced compared to the related art, and the fogging of the lens can be substantially prevented.

A vehicle lighting device according to a second aspect of the present invention comprises:
In the vehicle lighting device according to the first aspect, the vehicle lighting device includes an extension that partitions each region of the housing,
The partition is provided between the extension and the inner surface of the lens or the inner surface of the housing. In the second aspect, when each area in the housing is partitioned by the extension, the partition wall is provided in the gap between the extension and the inner surface of the housing or the inner surface of the lens. It can easily be restricted. Therefore, the air flow between the respective regions in the housing can be more effectively restricted, and the simple configuration allows
An increase in cost can be suppressed.

A vehicle lighting device according to a third aspect of the present invention comprises:
In the vehicle lighting device according to the first aspect, a reflector surrounding at least one of the bulbs is provided, and the partition is disposed between the reflector and the inner surface of the lens or the inner surface of the housing. In this third aspect, at least one bulb is provided with a reflector that reflects light from the bulb and guides the light forward,
By providing the partition wall between the reflector and the inner surface of the lens or the inner surface of the housing, the air flow between the respective regions can be easily restricted. Therefore, the air flow between the respective regions in the housing can be more effectively restricted, and the increase in cost can be suppressed by a simple configuration.

[0013] A vehicle lamp according to a fourth aspect of the present invention comprises:
In the vehicle lighting device according to the third aspect, the vehicle lighting device includes an extension that partitions each region of the housing,
The partition is disposed between the extension and the inner surface of the lens, the inner surface of the housing, or the reflector. In the fourth aspect, when each area in the housing is partitioned by the extension and at least one valve is provided with a reflector, the space between the extension and the inner surface of the housing, the inner surface of the lens, or the reflector is formed. By providing the partition, the air flow between the respective regions can be easily restricted. Therefore,
The air flow between each area in the housing can be more effectively restricted, and the simple configuration can suppress an increase in cost.

A vehicle lamp according to a fifth aspect of the present invention comprises:
In the vehicle lamp according to any one of the first to fourth aspects, the partition is formed on an inner surface of the lens. In the fifth aspect, the partition wall can be formed integrally with the lens at the same time as the lens is formed. Therefore, a step for forming the partition wall is not required, and the partition wall can be formed at low cost.

[0015] A vehicle lamp according to a sixth aspect of the present invention comprises:
In the vehicle lamp according to any one of the first to fourth aspects, the partition is formed on an inner surface of the housing.
In the sixth aspect, the partition wall can be formed integrally with the housing at the same time as the housing is formed, or can be attached integrally to the housing, so that the step of forming the partition wall is not required, or the partition wall can be easily formed. Can be configured at low cost.

A vehicle lamp according to a seventh aspect of the present invention comprises:
In the vehicle lamp according to the second or fourth aspect,
The partition is formed in an extension. In the seventh aspect, the partition wall is formed at the time of extension molding.
At the same time, the extension can be formed integrally with the extension, so that the step of forming the partition is not required, and the structure can be formed at low cost.

A vehicle lamp according to an eighth aspect of the present invention is
In the vehicle lamp according to the third or fourth aspect,
The partition is formed on the reflector. In the eighth aspect, since the partition can be formed integrally with the reflector at the same time as the reflector is formed, the step of forming the partition is not required, and the partition can be formed at low cost.

A vehicle lamp according to a ninth aspect of the present invention comprises:
In the vehicle lamp according to any one of the first to eighth aspects, the partition wall blocks airflow between regions,
It is configured. In the ninth aspect, the partition blocks the air flow between the areas, so that the air heated by the heat generated by the valve in the area of the function being used may flow into other unused areas. Completely eliminated. As a result, even when the temperature of the lens becomes low due to, for example, rainy weather or car washing, the heated air does not flow into other unused areas, and dew condensation on the lens inner surface in other unused areas occurs. It will be possible to eliminate the occurrence of lens fogging completely.

According to a tenth aspect of the present invention, a housing attached to a vehicle body of an automobile, a lens closely attached to the housing so as to cover an open outer surface of the housing, and a plurality of regions inside the housing are provided. A reflector provided with a bulb disposed in each region, wherein the boundary portion of the region is provided with a partition wall for restricting air flow between the regions, The gap that forms the airflow at the boundary between the areas where
m. In this tenth aspect,
The air flow between the regions can be obstructed, and dew condensation is prevented.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. still,
Since the embodiments described below are preferred specific examples of the present invention, various technically preferred limitations are added.
The scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

FIG. 1 shows the configuration of a first embodiment of a vehicular lamp according to the present invention. In FIG. 1, a vehicular lamp 10 is configured to have three functions of a traveling beam, a passing beam, and a direction indicator, and a housing 1 attached to a vehicle body (not shown).
1 and a lens 12 for covering the open front surface of the housing 11
In the respective regions of the traveling beam portion 11a, the passing beam portion 11b, and the direction indicator portion 11c in the housing 11,
Sockets 13a, 13 are provided at the rear end of the housing 11, respectively.
b, 13c mounted via valves 14a, 14b,
14c, reflectors 15a and 15b disposed around the respective valves 14a and 14b, and extensions 16a, 16b and 16c for partitioning the running beam section 11a, the passing beam section 11b and the direction indicator section 11c.
Partitions 17a and 17b are provided between the extensions 16b and 16c and the inner surface of the lens 12, and partitions 18a and 18b are provided between the extensions 16b and 16c and the inner surface of the housing 11. .

The housing 11 is made of, for example, a resin such as PP (polypropylene), and includes a traveling beam portion 11a for accommodating the traveling beam valve 14a and a low beam portion 1 for storing the low beam valve 14b.
It is divided into three areas of a direction indicator unit 11c that houses the direction indicator valve 1b and the direction indicator valve 14c.

The lens 12 is made of, for example, a transparent resin such as polycarbonate, and its periphery is attached to the housing 11 by welding or the like, and the internal space of the housing 11 is sealed.

The sockets 13a, 13b and 13c are
It is hermetically attached to the housing 11,
The bulbs 14a, 14b, and 14c are configured to be turned on by being supplied with power from an appropriate known means (not shown). The passing beam socket 13b is, in the illustrated case,
It is arranged in.

The reflectors 15a and 15b are made of, for example, a polyester-based thermosetting resin on which aluminum is vapor-deposited, and are configured to reflect light from the bulbs 14a and 14b and guide the light to the front of the automobile. I have.

The extensions 16a, 16b, 1
6c is, for example, PET (polyethylene terephthalate)
And extending near the inner surface of the lens 12 and the reflectors 15a, 15b or the inner surface of the housing 11, respectively.
It is configured to partition each area of the passing beam part 11b and the direction indicator part 11c.

The partition 17a is provided with an extension 16
b is formed integrally with the edge near the lens 12, and defines a small space, for example, a gap of about 1 mm, which restricts the air flow from the inner surface of the lens 12. Further, the partition 17b is provided with an extension 16c.
Is configured as a part of the edge near the lens 12 of
The inner surface of the lens 12 defines a small gap that restricts airflow.

On the other hand, the partition walls 18a, 18b
Are formed integrally with the housing 11 so as to protrude forward from the inner surface of the housing 11 toward the lens 12, and define a slight gap between the housing 11 and the housing 11 for restricting air flow. It has become.

The vehicular lamp 10 according to the embodiment of the present invention comprises:
The traveling beam, the passing beam, or the direction indicator functions by turning on the bulb 14a, 14b, or 14c as described above. Here, for example, when the bulb 14b is turned on at the time of using the passing beam that is frequently used, the lighting causes the bulb 14b to generate heat and the passing beam portion 11b
The air inside is heated.

By the way, the extensions 16b, 16
The partition 17a, 17b, 18a, 18b is present in the gap between the housing 11 and the lens 11 or the lens 12 so that these gaps are narrowed so as to restrict the air flow. 11b, the heated air in the other unused traveling beam 1
It is difficult to flow into 1a or the direction indicator 11c. Therefore, even when the surface of the lens 12 is cooled by, for example, rain or a car wash, the amount of warm air flowing into the traveling beam portion 11a or the direction indicator portion 11c is small, and the warm air is Even if the back surface is touched, the amount of dew condensation on the surface of the lens 12 is small, so that the fogging of the lens 12 can be substantially prevented.

In this manner, the regions of the traveling beam portion 11a, the passing beam portion 11b, and the direction indicator portion 11c in the housing 11 are mutually extended.
Since the air flow is restricted by b, 16c and the partition walls 17a, 17b, 18a, 18b, the warm air heated in the used area is less likely to flow into other unused areas. Condensation and fogging of the inner surface of the lens 12 due to warm air flowing into the unused area can be substantially prevented.

In this case, the partition walls 17a, 17b, 18
Since the gaps a and 18b are configured not to completely block the gaps between the regions but to narrow the gaps, the dimensional accuracy does not need to be very high. Will be. Therefore, each partition 17a, 1
The gap between 7b, 18a, 18b and the inner surface of lens 12 is
The air flow may be restricted, for example, about 1 mm. In the case of the partition wall 17b, the gap may be about 1 to 2 mm if the width of the place where the gap along the inner surface of the lens 12 is narrowed is, for example, about 10 mm.

FIG. 2 shows the configuration of a second embodiment of a vehicular lamp according to the present invention. In FIG. 2, the vehicle lamp 20 is a partition wall 1 of the vehicle lamp 10 shown in FIG.
Instead of 7a, 18a, 18b, partition walls 21, 22, 2
It has the same configuration as the vehicle lamp 10 shown in FIG.

The partition 21 is provided with an extension 16b.
The lens 12 is formed on the inner surface of the lens 12 so as to face the edge near the lens 12. The partition walls 22, 23 are first partition walls 22a, 23 extending forward from the housing 11, respectively.
a, and second partition walls 22b and 23b extending rearward from the extensions 16b and 16c.
Partition walls 22a and 22b, 23a and 23b to be paired
Are in contact with each other.

Therefore, the gaps at the boundaries due to the partitions 21, 22 and 23 impede the air flow between the adjacent areas. In this case, the gap between the partition walls 22 and 23 is 0 mm, and the gap between the partition wall 21 and the gap between the extension 17b and the lens 12 is approximately 2 mm.

According to the vehicle lamp 20 having the above-described configuration, similarly to the vehicle lamp 10 shown in FIG. 1, the traveling beam portion 11a and the passing beam portion 11b in the housing 11 are provided.
And the respective regions of the direction indicator section 11c are mutually extended by the extensions 16b and 16c and the partition walls 21 and 17b.
Since the airflow is restricted and the airflow is blocked by the partition walls 22 and 23, the warm air heated in the used area is less likely to flow into other unused areas. In addition, dew condensation and fogging on the inner surface of the lens 12 due to warm air flowing into an unused area can be more effectively prevented.

When a so-called shower test was conducted on the above-described vehicle lamp 20 and the conventional vehicle lamp 10 shown in FIG. 5, the conventional vehicle lamp 10 showed a fogging on the inner surface of the lens in about 30 minutes. In contrast, in the vehicle lamp 20 according to the embodiment of the present invention, no fogging occurred on the inner surface of the lens even after 180 minutes, and the effect of the present invention was confirmed.

FIG. 3 shows the configuration of a third embodiment of the vehicular lamp according to the present invention. In FIG. 3, the vehicle lamp 30 is a partition wall 1 of the vehicle lamp 10 shown in FIG.
Instead of 7a, 18a, 18b, partition walls 31, 32, 3
It has the same configuration as the vehicle lamp 10 shown in FIG.

The partition 31 is provided with an extension 16b.
Is configured as a part of the edge near the lens 12 of
The inner surface of the lens 12 defines a small gap that restricts air flow. In this case, the gap between the partition 21 and the inner surface of the lens 12 is, for example, 2 mm and the width is 10 m.
m.

The partition walls 32 and 33 are mounted on the inner surface of the housing 11 so as to extend forward from the housing 11, respectively, and define a slight gap between them and the housing 11 for restricting the air flow. It has become.

According to the vehicle lamp 30 having such a configuration, the traveling beam portion 11a and the passing beam portion 11b in the housing 11 are provided similarly to the vehicle lamp 10 shown in FIG.
And the respective regions of the direction indicator section 11c are mutually connected to the extensions 16b and 16c and the partition walls 31, 32, 33 and 17 respectively.
b, the air flow is restricted, so that the warm air heated in the used area is more difficult to flow into other unused areas, and the warm air flowing into the unused area is Dew and fogging on the inner surface of the lens 12 can be more effectively prevented. In this case, the partition 32,
33 is formed separately from the housing 11, and the partition walls 31 and 17b are formed by the shapes of the extensions 16b and 16c. Therefore, the housing and lens used in the conventional vehicle lamp can be used as they are. it can.

FIG. 4 shows the configuration of a fourth embodiment of a vehicular lamp according to the present invention. In FIG. 4, the vehicle lamp 40 is a partition wall 3 of the vehicle lamp 30 shown in FIG.
The configuration is the same as that of the vehicle lamp 30 shown in FIG. 3 except that partitions 41 and 42 are provided instead of 2 and 33.

The partition walls 41 and 42 are arranged between both side edges of the reflector 15b and the extensions 16b and 16c so as to close the gap therebetween, and are made of rubber or the like.

According to the vehicle lamp 40 having the above-described configuration, similarly to the vehicle lamp 10 shown in FIG. 1, the traveling beam portion 11a and the passing beam portion 11b in the housing 11 are provided.
And each area of the direction indicator section 11c is mutually extended by the extensions 16b and 16c and the partition walls 31 and 17b.
Since the air flow is restricted and the air flow is blocked by the partition walls 41 and 42, the warm air heated in the used area is more difficult to flow into other unused areas. In addition, dew condensation and fogging on the inner surface of the lens 12 due to warm air flowing into an unused area can be more effectively prevented.

In the above-described embodiment, a case has been described in which the present invention is applied to a vehicular lamp having three functions of a traveling beam, a passing beam, and a direction indicator. However, the present invention is not limited to this. Vehicle lamps with only two functions, other types of functions,
For example, it is apparent that the present invention can be applied to a vehicle lamp in which a fog lamp, a vehicle side lamp, and the like are combined. Also,
In the embodiment described above, the gap between the partition walls is 1 mm.
In the case of having a width of about 10 mm or about 2 mm, the value is exemplified as about 2 mm. However, this value varies depending on the shape and material of the partition wall, the housing, and the lens, and is not particularly limited to the illustrated value. When the gap forming the air flow is less than about 3 mm, preferably 2 mm or less, and more preferably 1 mm or less at the boundary between all adjacent areas, the occurrence of fogging by the shower test is effectively suppressed. Was.

[0046]

As described above, according to the present invention, the interior space of the housing and the lens is sealed,
Since moist air does not flow in from the outside, even when the temperature of the lens becomes low due to turning on the bulb or washing the car, the moist air may condense on the inner surface of the lens and fog the inner surface of the lens. There is no. In this manner, according to the present invention, even when a single housing has a plurality of functions, it is possible to restrict the flow of warm air into a region of unused functions in the housing, and the lens can be used. It is possible to provide an extremely excellent vehicular lamp without fogging.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a configuration of a first embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a schematic sectional view showing the configuration of a second embodiment of the vehicular lamp according to the present invention.

FIG. 3 is a schematic sectional view showing the configuration of a third embodiment of the vehicular lamp according to the present invention.

FIG. 4 is a schematic sectional view showing a configuration of a fourth embodiment of a vehicular lamp according to the present invention.

FIG. 5 is a schematic cross-sectional view showing a configuration of an example of a conventional vehicle lamp.

[Explanation of symbols]

 10, 20, 30, 40 Vehicle lamp 11 Housing 11a Running beam section 11b Passing beam section 11c Direction indicator section 12 Lens 13a, 13b, 13c Socket 14a, 14b, 14c Valve 15a, 15b Reflector 16a, 16b, 16c Extension 17a , 17b partition 18a, 18b partition 21, 22 partition 31, 32, 33 partition 41, 42 partition

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K042 AA08 AA12 BA07 BB11 BB16 BC01 BC08 3K080 AB08 BA09 BB01 BB20 BC11 BD01 CC25

Claims (10)

[Claims] 1. A housing attached to a vehicle body of an automobile, a lens closely attached to the housing so as to cover an open outer surface of the housing, and a plurality of regions inside the housing. A vehicular lamp including a plurality of bulbs respectively mounted via sockets, wherein at a boundary portion between the respective regions, a partition wall for restricting air flow between the regions is provided. Vehicle lighting. 2. An extension for partitioning each area of the housing, wherein the partition wall is provided between the extension and an inner surface of the lens or the inner surface of the housing.
The vehicle lamp according to claim 1. 3. The apparatus according to claim 1, further comprising: a reflector surrounding at least one of the valves, wherein the partition is disposed between the reflector and an inner surface of the lens or the inner surface of the housing. Item 4. The vehicle lighting device according to Item 1. 4. The apparatus according to claim 3, further comprising an extension for partitioning each area of the housing, wherein the partition is disposed between the extension and the inner surface of the lens, the inner surface of the housing, or the reflector. The vehicle lighting device as described in the above. 5. The vehicular lamp according to claim 1, wherein the partition is formed on an inner surface of the lens. 6. The vehicular lamp according to claim 1, wherein the partition is formed on an inner surface of the housing. 7. The vehicular lamp according to claim 2, wherein the partition is formed in an extension. 8. The vehicular lamp according to claim 3, wherein the partition is formed in a reflector. 9. The vehicular lamp according to claim 1, wherein the partition wall is configured to block an air flow between the regions. 10. A housing attached to a vehicle body of an automobile, a lens closely attached to the housing so as to cover an open outer surface of the housing, and a plurality of regions inside the housing. A reflector provided with a valve;
In the vehicle lighting device, the boundary between the regions includes a partition wall that restricts an air flow between the regions, and a gap that forms an air flow at a boundary between the adjacent regions is smaller than approximately 3 mm. A vehicular lamp, characterized in that: