JP2004319380A - Vehicular lighting fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a draining structure to be used also as a wrong assembling preventive structure. <P>SOLUTION: When the outer fitting wall 5 of a lamp housing 2 is fitted to the inner fitting wall 6 of a lamp lens 3, the protruding part 12 of the lamp lens 3 is fitted to the draining hole 11 of the lamp housing 2, whereby the wrong assembling of the lamp housing 2 with the lamp lens 3 can be prevented. Even if water penetrates into a lamp chamber 7 airtightly partitioned by the lamp housing 2 and the lamp lens 3, the water in the lamp chamber 7 is drained out through the draining hole 11 in the lower part of the lamp housing 2. Consequently, the draining structure can be used also as the wrong assembling preventive structure, the structure can be simplified, and the manufacturing cost is reduced for this portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicular lamp having a drainage structure. In this specification and claims, upper, lower, left, right, front, and rear refer to upper, lower, left, right, front, and upper when the vehicle lighting device of the present invention is mounted on an automobile. Show later.
[0002]
[Prior art]
2. Description of the Related Art A vehicular lamp having a drainage structure has been known (for example, see Patent Document 1). This vehicular lamp includes a lamp housing (bulb housing 1) and a lamp lens (lens 20), and a light source (bulb) arranged in a lamp room (light room 2) partitioned watertight by the lamp housing and the lamp lens. 6), and a drain hole (a drain hole 40) for communicating the lamp chamber with the outside is provided at a lower portion of the lamp housing. In the event that water enters the lamp room, the water in the lamp room can be drained to the outside through a drain hole at the bottom of the lamp housing.
[0003]
[Patent Document 1]
JP 2001-229716 A (paragraph numbers “0007” to “0022”, FIGS. 1, 2, 5 to 9)
[0004]
[Problems to be solved by the invention]
In general, a vehicular lamp requires a drainage structure that drains water from the lamp chamber to the outside if water enters the lamp chamber which is watertightly partitioned by a lamp housing and a lamp lens. Also, in the case of a vehicular lamp, especially when the lamp lens has a symmetrical shape in the vertical and horizontal directions, and the lamp lens has a vertical difference (vertical difference) left and right differences, when assembling the lamp housing and the lamp lens, It is necessary to have a structure for preventing erroneous assembly so that the lens is not erroneously assembled vertically, horizontally, or horizontally.
[0005]
An object of the present invention is to provide a vehicular lamp that can serve both as a drainage structure and an erroneous assembly prevention structure.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is provided with a drain hole for communicating between the lamp chamber and the outside at an edge of a joint of the lower part of the lamp housing and the lamp lens, At the edge of the joint between the lamp lens and the lamp housing at the lower part of the lamp lens, a projection is provided which fits into the drain hole to prevent erroneous assembly of the lamp housing and the lamp lens. .
[0007]
As a result, in the invention according to claim 1, the drain hole is provided at the joint of the lower portion of the lamp housing and the lamp lens, while the convex portion is provided between the lower portion of the lamp lens and the lamp housing. It is provided on the edge of the seam. Therefore, according to the first aspect of the present invention, by fitting the convex portion of the lamp lens into the drain hole of the lamp housing, erroneous assembly of the lamp housing and the lamp lens is prevented. Further, in the invention according to claim 1, in the event that water enters the lamp room which is watertightly partitioned by the lamp housing and the lamp lens, the water in the lamp room is drained through a drain hole at the lower portion of the lamp housing. Can be pulled out. As described above, the invention according to claim 1 can use both the drainage structure and the erroneous assembly prevention structure, so that the structure is simplified and the manufacturing cost is correspondingly reduced.
[0008]
Further, the invention according to claim 2 is characterized in that the convex portion for preventing erroneous assembly is a gate portion at the time of molding the lamp lens.
[0009]
As a result, according to the present invention, the gate portion at the time of molding the lamp lens is formed by fitting the gate portion at the time of molding the lamp lens into the drain hole of the lamp housing as a projection for preventing erroneous assembly. Becomes inconspicuous surrounded by the lamp housing. In addition, according to the second aspect of the present invention, the gate portion at the time of molding the lamp lens is provided at the lower portion of the lamp lens as a projection for preventing erroneous assembly. Located at the bottom of the inconspicuous. As described above, according to the second aspect of the present invention, since the gate portion at the time of molding the lamp lens becomes inconspicuous, the finishing process of the gate portion becomes unnecessary, and the manufacturing cost is correspondingly reduced.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example of an embodiment of a vehicular lamp according to the present invention will be described with reference to the accompanying drawings. It should be noted that the present invention is not limited by the embodiment. The vehicle lamp of this example will be described with respect to a DRL (Day Time Running Lamp), that is, a day time lamp.
[0011]
"Description of Configuration of Embodiment"
In FIG. 1, C is an automobile as a vehicle. The vehicle lamp 1 according to the present embodiment is attached to the lower side of both left and right ends of the front bumper B of the vehicle C. The vehicular lamp 1 includes a lamp housing 2, a lamp lens 3, and a plurality of LEDs 4 as light sources.
[0012]
The lamp housing 2 is made of, for example, a synthetic resin, and has a shape in which one surface (front surface) is open and the other surface (rear surface) is closed. The front surface of the lamp housing 2 is vertically and horizontally symmetrical. An outer fitting wall 5 is formed at the edge of the opening of the lamp housing 2.
[0013]
On the other hand, the lamp lens 3 is also made of a light-transmitting synthetic resin, and has a shape in which one surface (rear surface) is open and the other surface (front surface) is closed. The front and rear surfaces of the lamp lens 3 are vertically and horizontally symmetrical. An inner fitting wall 6 is formed at the edge of the opening of the lamp lens 3. A plurality of prism elements (not shown) and a plurality of transparent elements (not shown) are provided on the inner surface of the lamp lens 3. The lamp chamber 7 is defined by fitting the inner fitting wall 6 of the lamp lens 3 to the outer fitting wall 5 of the lamp housing 2.
[0014]
The LED 4 is a so-called bullet-type high-brightness LED, in which an LED chip is mounted on a holder, and the holder and the LED chip are covered and fixed with a bullet-shaped lens. The LED 4 emits, for example, white light or pale light from a light emitting unit (LED chip) 8.
[0015]
The plurality of LEDs 4 are fixed to one surface of a substrate 9 (printed circuit board). In this example, as shown in FIG. 2, six LEDs 4 are arranged at equal intervals in the upper part of the board 9, three LEDs 4 are arranged at equal intervals in the middle part of the board 9, and six LEDs 4 are arranged in the lower part of the board 9. Are fixed at equal intervals. The plurality of, in this example, fifteen, LEDs 4 are arranged in the lamp chamber 7 via the substrate 9 so as to correspond to the prism element and the transparent element of the lamp lens 3 respectively. One surface of the substrate 9 is subjected to a cosmetic surface treatment such as, for example, aluminum evaporation or silver coating. The 15 LEDs 4 are electrically connected to a power supply (battery) via a switch, a control circuit, and the like by a harness 18 (not shown).
[0016]
The other surface of the substrate 9 and the inner fitting wall 6 of the lamp lens 3 are filled with a filler 10 (a shaded portion in FIG. 3). The lamp housing 2, the lamp lens 3, and the substrate 9 are fixed by the adhesive property of the filler 10. In addition, the interior of the lamp chamber 7 is kept watertight due to the sealing property of the filler 10.
[0017]
A drain hole 11 for communicating between the inside of the lamp chamber 7 and the outside is formed at the lower edge of the lamp housing 2 at the joint of the lamp lens 3, that is, substantially at the center of the outer fitting wall 5. Is provided. On the other hand, the lower part of the lamp lens 3 is fitted to the drain hole 11 at the joint of the lamp housing 2, that is, substantially at the center of the inner fitting wall 6. A projection 12 is provided to prevent erroneous assembly of the lamp lens 3 with the lamp lens 3.
[0018]
The protrusion 12 for preventing the lamp lens 3 from being erroneously assembled is a gate portion when the lamp lens 3 is molded. This gate portion is a portion set by the underside gate. Further, this gate portion is provided below the parting.
[0019]
"Explanation of the operation of the embodiment"
The vehicular lamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below.
[0020]
First, the 15 LEDs 4 are turned on. Then, light is emitted from the light emitting units 8 of the 15 LEDs 4 toward the lamp lens 3 in a predetermined direction according to the directional characteristics of the LEDs 4. The light from the 15 LEDs 4 is radiated to the outside through light distribution control in the prism element of the lamp lens 3, or is transmitted to the outside almost directly through the transparent element of the lamp lens 3. As a result, light is emitted from the lamp lens 3 to the outside in a predetermined light distribution pattern. For example, by irradiating light in a direction of approximately 20 ° to the left and right and in a direction of approximately 5 ° to 15 ° upward, a predetermined light distribution pattern dedicated to daytime, that is, a light distribution for a DRL (daytime running lamp). A pattern is obtained.
[0021]
"Explanation of effects of the embodiment"
The vehicular lamp 1 according to this embodiment is configured as described above, and the effects thereof will be described below.
[0022]
In the vehicular lamp 1 according to this embodiment, a drain hole 11 is provided in an edge of a joint of the lower part of the lamp housing 2 and the lamp lens 3, that is, in the outer fitting wall 5, and on the other hand, a convex portion is provided. The part 12 is provided on the edge of the joint of the lower part of the lamp lens 3 and the lamp housing 2, that is, on the inner fitting wall 6. For this reason, the vehicular lamp 1 according to this embodiment fits the outer fitting wall 5 of the lamp housing 2 and the inner fitting wall 6 of the lamp lens 3 as shown by the solid arrow in FIG. At this time, by fitting the convex portion 12 of the lamp lens 3 into the drain hole 11 of the lamp housing 2, erroneous assembly of the lamp housing 2 and the lamp lens 3 is prevented. Also, in the event that water enters the lamp room 7 which is watertightly partitioned by the lamp housing 2 and the lamp lens 3, the vehicular lamp 1 according to this embodiment is as shown by an arrow W in FIG. In addition, the water in the lamp chamber 7 can be drained to the outside through the drain hole 11 in the lower part of the lamp housing 2. As described above, the vehicular lamp 1 according to the present embodiment can serve both as the drainage structure and the erroneous assembly prevention structure, so that the structure is simplified and the manufacturing cost is correspondingly reduced.
[0023]
Further, in the vehicle lamp 1 according to this embodiment, the projection 12 for preventing erroneous assembly is a gate portion when the lamp lens 3 is molded. As a result, the vehicular lamp 1 according to the present embodiment fits the gate portion at the time of molding the lamp lens 3 into the drain hole 11 of the lamp housing 2 as a projection 12 for preventing erroneous assembly. The gate portion at the time of molding the lamp lens 3 is surrounded by the lamp housing 2 and becomes inconspicuous. Moreover, in the vehicular lamp 1 according to the present embodiment, the gate portion at the time of molding the lamp lens 3 is provided below the lamp lens 3 as the projection 12 for preventing erroneous assembly. The gate portion at the time of molding is located below the lamp lens 3 and becomes inconspicuous. As described above, in the vehicular lamp 1 according to the present embodiment, the gate portion at the time of molding the lamp lens 3 becomes inconspicuous, so that the finishing process of the gate portion becomes unnecessary, and the manufacturing cost is correspondingly reduced.
[0024]
"Explanation of examples other than the embodiment"
In the above embodiment, an example of a DRL (daytime running lamp) has been described. However, in the present invention, a vehicle lamp other than the DRL (daytime running lamp), for example, a turn signal lamp, a side lamp, and the like. Also, the present invention can be applied to vehicle lamps such as vehicle side lights.
[0025]
【The invention's effect】
As apparent from the above, according to the vehicular lamp according to the present invention (claim 1), the drainage structure and the erroneous assembly prevention structure can be used together, so that the structure is simplified and the manufacturing cost is correspondingly reduced. Is cheaper.
[0026]
Further, according to the vehicular lamp according to the present invention (claim 2), the gate portion at the time of molding the lamp lens becomes inconspicuous, so that the finishing process of the gate portion becomes unnecessary, and the manufacturing cost is correspondingly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a vehicle in use showing an embodiment of a vehicular lamp of the present invention.
FIG. 2 is a perspective view showing the vehicle lamp according to the embodiment.
FIG. 3 is a longitudinal sectional view showing the vehicular lamp according to the first embodiment.
FIG. 4 is a view taken in the direction of the arrow IV in FIG. 3;
FIG. 5 is an enlarged sectional view of a portion V in FIG.
FIG. 6 is an explanatory view showing an upper part and another part of a lamp lens in which a fitting wall is fitted to an outer fitting wall of a lamp housing;
[Explanation of symbols]
B Bumper C Automobile 1 Vehicle lamp 2 Lamp housing 3 Lamp lens 4 LED
5 Outer fitting wall 6 Inner fitting wall 7 Light room 8 Light emitting part 9 Substrate 10 Filler 11 Drain hole 12 Convex part

Claims (2)

In a vehicle lighting device having a drainage structure,
A lamp housing and a lamp lens;
A light source disposed in a lamp room watertightly partitioned by the lamp housing and the lamp lens;
With
A drain hole communicating between the lamp chamber and the outside is provided on an edge of a joint of the lamp lens and a lower part of the lamp housing,
At the edge of the joint between the lamp housing and the lamp housing at the lower part of the lamp lens, there is provided a projection that fits into the drain hole and prevents erroneous assembly of the lamp housing and the lamp lens. ,
A vehicular lamp characterized by the above. The vehicular lamp according to claim 1, wherein the projection for preventing erroneous assembly is a gate at the time of molding the lamp lens.

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