JPH08306204A - Vehicular lamp - Google Patents

Abstract

PURPOSE: To enable entire lenses in a vehicular lamp having round parts to be viewed at almost uniform brightness when a light-source bulb is turned on. CONSTITUTION: A reflection means 6 is provided for reflecting light from a light-source bulb 5 toward the round parts 21, 31 of lenses 2, 3. As a result, when the light-source bulb 5 is turned on, the light from the light-source bulb 5 is reflected by the reflecting surface 60 of the reflection means 6 toward the round parts 21, 31 of the lenses 2, 3. Toward the round parts 21, 31 of the lenses 2, 3 for which the amounts of light are insufficient because of their distances from the light-source bulb 5, the light from the light-source bulb 5 is reflected by the reflection means 6, so that the shortage in amount of light can be compensated. Therefore, the entire lenses 2, 3 can be viewed at almost uniform brightness.

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 wraparound portion such as a tail stop lamp, and particularly when a light source bulb is turned on, a lens corresponding to the wraparound portion does not have a dark portion. The present invention relates to a vehicular lamp in which the entire lens can be seen with substantially uniform brightness.

[0002]

2. Description of the Related Art A vehicle lamp of this type will be described below with reference to FIG.
And FIG. 6 will be described. The vehicle lamp of this example is
It is a tail stop lamp that constitutes a rear combination lamp. In the drawings, only this tail stop lamp is shown, and other lamps are omitted.

In the figure, 1 is a lamp housing. This lamp housing 1 has an opening 10 on the front surface, and a sealing recess 11 is formed on the entire peripheral edge of the front opening 10.
To provide. Further, in the lamp housing 1, a side portion where a wraparound portion 21 of an outer lens 2 described later is located is substantially perpendicular to the optical axis direction, and a side portion opposite to the side portion is substantially in the optical axis direction. Make parallel.

The seal recess 11 of the lamp housing 1
The seal leg portion 22 of the outer lens 2 is sealed by, for example, hot melt 12 or the like, and is mechanically fixed by a screw or the like (not shown). A lamp chamber 14 is defined by the outer lens 2 and the lamp housing 1. The outer lens 2 is, for example, a substantially transparent lens, which is made by stacking a red synthetic resin inside a colorless synthetic resin. The outer lens 2 is provided with a wraparound portion 21 on the side (left side in the illustrated example) with respect to the front portion 20. An appropriate prism, for example, a horizontal prism, is provided on the inner surface of the outer lens 2.

Inside the lamp chamber 14 defined by the outer lens 2 and the lamp housing 1, the inner lens 3 is arranged by an appropriate mounting means. The inner lens 3 is made of, for example, red synthetic resin, and is provided with a wrap-around portion 31 having a substantially curved cross-section on the side (left side in the illustrated example) with respect to the front portion 30. Appropriate prisms, for example, concentric circular prisms (Fresnel) 32 are provided on the inner and outer surfaces of the inner lens 3, and a fisheye prism 33, which is a diffusing prism, is provided on the outer surface.

A light source bulb 5 is arranged in the lamp chamber 14 inside the inner lens 3. This light source bulb 5
Is detachably attached to the lamp housing 1 via a socket 50. When the above-mentioned light source bulb 5 is turned on, direct light from the light source bulb 5 is emitted from the inner lens 3
Then, the light is radiated to the outside through the outer lens 2 in a predetermined light distribution pattern.

[0007]

However, the above-described conventional vehicular lamp has the wraparound portions 21 and 31 on the side. For this reason, the distance from the light source bulb 5 to the above-described wraparound portions 21 and 31 becomes large, and when the light source bulb 5 is turned on, the wraparound portions 21 and 31 may lack the light amount. If this amount of light is insufficient, for example, as shown in FIG. 5, dark portions (portions hatched in the drawing) D are generated above and below the wraparound portions 21 and 31, and the lenses 2 and 3 look uneven. There is a problem such as becoming.

It is an object of the present invention to provide a vehicular lamp in which the lens corresponding to the wraparound portion does not have a dark portion when the light source bulb is turned on and the entire lens can be seen with substantially uniform brightness.

[0009]

In order to achieve the above-mentioned object, the present invention is characterized in that reflection means for reflecting the light from the light source bulb to the lens side corresponding to the wraparound portion is provided. .

[0010]

According to the present invention, when the light source bulb is turned on, the light from the light source bulb is reflected by the reflecting means to the lens side corresponding to the wraparound portion. As a result, since the light from the light source bulb can be reflected by the above-mentioned reflection means to the wrap-around portion of the lens that has a large distance from the light source bulb and the light quantity is insufficient, it is possible to compensate for the shortage of the light quantity. Therefore, the entire lens can be seen with almost uniform brightness.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIG.
It will be described with reference to FIGS. In this example, a tail stop lamp that constitutes a rear combination lamp will be described. In the figure, the same reference numerals as those in FIGS. 5 to 6 indicate the same components.

In the vehicular lamp of the present invention in this embodiment, the reflecting means 6 is provided in the lamp chamber 14.
As shown in FIG. 3, the reflecting means 6 is provided with a reflecting surface 60 at an intermediate portion, and mounting portions 61 are provided above and below the reflecting surface 60. The reflection means 6 is attached to the housing 1 of the vehicular lamp via a mounting portion 61 at a location corresponding to (opposing) the wraparound portions 21 and 31 of the lenses 2 and 3. The reflection surface 60 of the reflection means 6 is provided with the light from the light source bulb 5 on the lens 2 and 3 side corresponding to the wraparound portion of the vehicular lamp, that is, the lens 2
It is configured to be reflected toward the wraparound portions 21 and 31 of 3 and 3. In this example, for example, a multi-step paraboloid is formed. The reflective surface 60 is formed by aluminum vapor deposition.

Since the vehicular lamp according to the present invention in this embodiment has the above-described structure, when the light source bulb 5 is turned on, the light from the light source bulb 5 is reflected by the reflecting surface 60 of the reflecting means 6 to the lens 2 and It is reflected to the wraparound parts 21 and 31 side of No. 3. As a result, the reflecting surface 60 of the above-mentioned reflecting means 6 is fitted to the wraparound portions 21 and 31 of the lenses 2 and 3 which are large in distance from the light source bulb 5 and lack in light quantity.
Since the light from the light source bulb 5 can be reflected by, the shortage of the light amount can be compensated. Therefore, lens 2
And 3 are visible with almost uniform brightness.

FIG. 4 is a front view showing a modification of the reflecting means. The reflecting means 6A of this example has a reflecting surface 60A on the upper and lower portions.
And a mounting portion 61A of the ineffective reflection portion is provided in an intermediate portion between the upper and lower reflection surfaces 60A.
The reflection surface 60A of the reflection means 6A has the light from the light source bulb 5 on the lens 2 and 3 side corresponding to the wraparound part of the vehicle lamp, that is, the wraparound parts 21 and 3 of the lenses 2 and 3.
It is configured to reflect to one side. In this example,
For example, it forms a multi-stage paraboloid.

In the above-mentioned embodiment, the tail stop lamp which constitutes the rear combination lamp is explained as the vehicle lamp, but the vehicle lamp of the present invention can be used for other vehicle lamps.

[0016]

As is apparent from the above, the vehicular lamp of the present invention does not have a dark portion in the lens corresponding to the wraparound portion when the light source bulb is turned on, and the entire lens has a substantially uniform brightness. appear.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a vehicular lamp of the present invention.

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

FIG. 3 is a front view of reflecting means.

FIG. 4 is a front view showing another modification of the reflecting means.

FIG. 5 is a front view showing a conventional vehicle lamp.

6 is a sectional view taken along line VI-VI in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp lamp housing, 14 ... Lamp chamber, 2 ... Outer lens, 21 ... Wrapping part, 3 ... Inner lens, 3
DESCRIPTION OF SYMBOLS 1 ... Wrap-in part, 5 ... Light source bulb, 6, 6A ... Reflecting means, 60, 60A ... Reflecting surface, 61, 61A ... Attachment part.

Claims (1)

[Claims] 1. A vehicular lamp having a wraparound portion and irradiating direct light from a light source bulb to the outside through a lens, wherein the light from the light source bulb is reflected to the lens side corresponding to the wraparound portion. A vehicular lamp having a reflection means.