JPH0757517A - Lamp structure - Google Patents

Abstract

PURPOSE:To surely prevent the occurrence of hazing of a lens by forming a rib protruded into a boundary section on the inner face of the lens, and closely sticking the tip of the rib to the boundary section via a seal material. CONSTITUTION:The right and left light chambers 19, 20 are partitioned by bulkheads 21, 22. A groove section 27 is formed along the vertical direction at the position near a fog lamp in a boundary section 26 between the light chambers 19, 20. A rib 28 closely stuck into the groove section 27 at the tip by a seal material S is formed along the vertical direction at the position corresponding to the groove section 27 of a lens 18. Since the right and left light chambers 19, 20 are completely partitioned by the rib 28, no air is moved between both light chambers 19, 20. When a bulb 15 on the fog lamp side is turned on and a bulb on the turning lamp side is kept off, for example, the air warmed in the light chamber 19 on the fog lamp side does not flow into the other light chamber 20 side, thus the occurrence of hazing of the lens 18 in the light chamber 20 where the bulb is kept off can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp structure, and more particularly to a lamp structure having a boundary between two lamp chambers.

[0002]

2. Description of the Related Art As a conventional lamp structure, for example, FIG.
Is known (see Japanese Utility Model Laid-Open No. 58-73503 for a similar technique). This lamp 1 is provided on the front surface of an automobile and has two bulbs 2 and 3 inside. That is, the reflectors 5 and 6 are provided on both left and right sides of the bottom of the housing 3, and the valves 2 and 3 are provided at the centers of the reflectors 5 and 6, respectively. A pair of partition walls 7 and 8 is formed from the bottom at an intermediate position of the housing 4, and the housing 4 is divided into two lamp chambers 9 and 10 corresponding to the bulbs 2 and 3, respectively.
In addition, the tips 7a and 8a of the partition walls 7 and 8 have a predetermined distance L.
Are separated from each other and are connected by the connecting portion 11. A boundary portion 12 is formed between the lamp chambers 9 and 10 by the tip portions 7a and 8a of the partition walls 7 and 8 and the connecting portion 11.

The opening of the housing 4 having such a structure is closely contacted with the peripheral edge 13a into the groove 4a formed in the opening edge of the housing 4 by using a so-called "hot melt" sealing material S. It is covered with the lens 13 that has been let. The tips 7a of the partition walls 7, 8 forming the boundary portion 12,
8a is in a state of being sufficiently close to the lens 13, and since the tip portions 7a and 8a are separated from each other by the predetermined distance L as described above, the light in each of the lamp chambers 9 and 10 is the other. It doesn't get into the side.

[0004]

However, in such a conventional technique, there is no possibility that the light in each of the lamp chambers 9 and 10 will adversely affect the other side, but in each of the lamp chambers 9 and 10. The warmed air A may reach the other side and generate cloudy weather F there. For example, when only the bulb 2 is turned on, the air A warmed in the lamp chamber 9 on the bulb 2 side is generated.
Comes to the lamp chamber 10 side where the bulb 3 is not lit from the slight gap between the tip portions 7a and 7b and the lens 13, and the air A is cooled in the lamp chamber 10 where the lamp 3 is not lit. There is a risk that cloudy weather F may occur. As a countermeasure therefor, breathing holes (not shown) for discharging the hot air inside the lamp chambers 9 and 10 to the outside must be provided in several places of the housing 4, which is disadvantageous in terms of design and cost of the lamp 1. Become.

The present invention has been made by paying attention to such a conventional technique, and provides a lamp structure capable of surely preventing the fogging of a lens.

[0006]

In order to achieve the above-mentioned object, the lamp structure according to the present invention forms a rib projecting into the boundary portion at a portion corresponding to the boundary portion of the inner surface of the lens, and The rib tips are brought into close contact with the boundary through a sealing material.

[0007]

According to the present invention, since the rib projecting into the boundary portion is formed on the inner surface of the lens and the tip of this rib is brought into close contact with the boundary portion through the sealing material, the air warmed in one of the lamp chambers is prevented. It is possible to reliably prevent the occurrence of clouding on the other side without reaching the other lamp chamber.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIG. It should be noted that the description overlapping with the conventional one is omitted. Further, the drawing is a view of the cross section viewed from above, and the direction perpendicular to the plane of the drawing corresponds to the vertical direction.

The lamp 14 of this embodiment is provided with a fog lamp bulb 15 and a turning lamp bulb 16 therein. When the lamp 14 is turned on, the fog lamp bulb 16 is better than the turning lamp bulb 16. 1
5 has a higher temperature. The lamp 14 is mounted on both sides of the front surface of the automobile, and the one shown in the drawing is the right one when viewed from the front. Housing 17 for this lamp 14
The lens 18 that covers the right side is inclined rearward according to the shape of the front surface of the vehicle. Therefore, in order to mount the lens 18, the peripheral edge portion 18a of the lens 18 connected through the seal material S and the groove portion 17a formed at the opening edge of the housing 17 are arranged on the right side rearward of the left side. positioned.

Further, a pair of partition walls 21, 2 for partitioning and forming a fog lamp-side lamp chamber 19 and a turning lamp-side lamp chamber 20 at an intermediate position of the housing 17.
2 is formed. In the light room 19 on the fog lamp side,
A large reflector 23 is provided, and the fog lamp bulb 15 is attached to the center of the reflector 23. When the reflector 23 is brought too close to the lens 18, the state of the reflector 23 is changed to the lens 18.
A predetermined distance d is secured between the reflector 23 and the lens 18 because it can be seen through from the outside. On the other hand, a reflector 24 made of aluminum vapor deposition is joined to the bottom of the lamp chamber 20 on the turning lamp side, and the turning lamp bulb 16 is attached to the center of the reflector 24.

Partition walls 21 and 2 for partitioning both lamp chambers 19 and 20
The two tip portions 21a and 22a are separated from each other by a predetermined distance L.
It is said to be close enough to the inner surface of the. The tip portions 21a and 22a are connected by a connecting portion 25, and the tip portions 21a and 22a and the connecting portion 25 form a boundary portion 26 between the lamp chambers 19 and 20. It should be noted that if the boundary portion 26 is also brought too close to the lens 18, the state of the connecting portion 26 will be visible through the lens 18, which is not desirable in terms of appearance. It is away from the lens 18.

A groove 27 is formed along the vertical direction at a position near the fog lamp in the boundary 26. On the other hand, at a position corresponding to the groove portion 27 of the lens 18, a rib 28, the tip of which is closely adhered to the inside of the groove portion 27 with a sealing material S, is formed along the vertical direction.
In addition, a slight step 27a is formed at a position corresponding to the groove portion 27 of the tip portion 21a, which serves as a reference for inserting the seal material S.

As described above, the left and right lamp chambers 19 and 20 are completely divided by the ribs 28, so that both lamp chambers 19 and 20 are separated.
There is no movement of air between them. Therefore, for example, even if only the bulb 15 on the fog lamp side is turned on and the bulb 16 on the turning lamp side is turned off, the air warmed in the fog lamp side lamp chamber 19 does not flow into the other lamp chamber 20 side. , The lens 1 in the lamp room 20 on the non-lighting side
There will be no cloudiness in 8.

On the contrary, when only the bulb 16 on the turning lamp side is turned on and the bulb 15 on the fog lamp side is not turned on, the air warmed by the bulb 16 on the turning lamp side reaches the boundary portion 26. However, even if the turning lamp side bulb 16 is turned on, the temperature does not become too high, and since the lighting time is short, the air is not warmed so much in the turning lamp side lamp chamber 20, so it corresponds to the boundary portion 26. The haze does not occur on the inner surface of the lens 18. This is the reason why the ribs 28 of the lens 18 are formed near the high temperature fog lamp. In addition, since the lens 18 of this embodiment is connected to the boundary portion 26 of the housing 17 via the rib 28 having an additional intermediate portion, the supporting strength of the lens 18 is higher than in the conventional case.

In the above description, the lamp structure mounted on the front surface of the automobile is taken as an example, but the present invention can be applied to the rear lamp and also to the lamps other than the automobile.

[0016]

The lamp structure according to the present invention has the contents as described above, and a rib projecting into the boundary portion is formed on the inner surface of the lens, and the tip of this rib is bounded by a sealing material. Since the air is warmed in one lamp chamber, it does not reach the other lamp chamber because it is closely attached to the other portion, and it is possible to prevent the clouding on the other side.

[Brief description of drawings]

FIG. 1 is a sectional view showing a lamp structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a conventional lamp structure.

[Explanation of symbols]

 17 Housing 18 Lens 19 and 20 Lamp Room 21a and 22a Tip of Partition Wall 21 and 22 Partition 25 Connection Part 26 Boundary 28 Rib S Sealing Material L Predetermined Interval

Claims (2)

[Claims] 1. A front end of the housing having a lens mounted on the front surface thereof is separated from the inner surface of the housing by a predetermined distance in order to divide the housing into two lamp chambers. A lamp structure in which a pair of partition walls in a state of being close to each other are formed, and the vicinity of the front end portions of the respective partition walls are connected by a connecting portion, and a boundary portion between both lamp chambers is formed by both front end portions of the partition walls and the connecting portions. In the lamp structure, a rib projecting into the boundary portion is formed at a portion corresponding to the boundary portion of the inner surface of the lens, and a tip of the rib is brought into close contact with the boundary portion via a sealing material. 2. The lamp structure according to claim 1, wherein one of the bulbs has a temperature higher than that of the other bulb, and the rib is formed in the boundary portion at a position close to the high temperature bulb.