JPH0236162Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of Industrial Application The present invention relates to a vehicle lamp installed in a vehicle such as an automobile, and particularly relates to the structure of a signal lamp such as a tail light.

〓Prior art〓 Fig. 3 shows the structure of a conventional vehicle lighting device of this type using an example of a combination lamp, and below, directions such as front and rear are indicated based on the irradiation direction of this lighting device as the front. explain. An inner lens 12 is provided on the front side of the light source 11, that is, on the side in the irradiation direction of the lamp, and makes the irradiated light from the light source 11 a substantially parallel light beam, and a lens cut such as a fisheye lens is provided on the further front side of the inner lens 12. An outer lens 13 is provided so that the parallel light rays from the inner lens 12 have appropriate light distribution characteristics. At this time, a reflex reflector 14 is usually provided integrally with a part of the outer lens 13.

In addition, in recent years, for the purpose of improving safety, it has been required to improve the visibility of this type of vehicle lamp from the side. Prism cuts 12a as shown enlarged in FIG.
The light is localized and irradiated near the area (degrees).

<Problems to be Solved by the Invention> However, the prism cut 12a described above for irradiating light to the sides biases the light of the cut portion to the sides, so this vehicle When the lamp is viewed from the front (rear front of the vehicle), the prism cut 12a naturally becomes dark, resulting in uneven brightness, giving rise to the problem of giving the viewer a sense of discomfort and degrading the sense of quality. The illuminance irradiated to the front side also decreases, and the visibility of this vehicle lamp also decreases, which is a problem in terms of performance.

〓Means for solving the problems〓 As a specific means for solving the above-mentioned conventional problems, the present invention includes a light source, and an inner lens and an outer lens provided on the irradiation direction side of the light source. , in a vehicle lamp in which a reflex reflector is attached to the main irradiation direction side within the light emitting surface of the outer lens, the irradiation light from the light source is directed only to the back side of the reflex reflector in a lateral direction with respect to the main irradiation direction. By providing a vehicle lamp characterized by a prism cut that biases the light rays towards the side, only the light rays on the back side of the reflex reflector, which normally do not transmit light rays, are biased to the side. This is to solve the above-mentioned conventional problems.

〓Example〓 Next, the present invention will be explained in detail based on an example shown in the drawings.

What is indicated by the reference numeral 1 in FIG. 1 is a light source such as a light bulb, and the front side of this light source 1 is provided with a lens cut such as a Fresnel cut, and an inner lens 2 that converts the irradiated light from the light source 1 into approximately parallel light rays is provided. The structure in which the outer lens 3 is provided on the front side of the inner lens 2 is approximately the same as that of the conventional vehicle lamp described above, but according to the present invention, the outer lens 3 is provided on the front side of the inner lens 2. That is, the irradiation light from the light source 1 is directed to the inner lens 2 at a position corresponding to the back surface of the reflex reflector 4 which is integrally provided on the main irradiation direction side, at a predetermined angle on the side of the vehicle lamp. For example, prism cuts 2a having a shape similar to that described in the conventional example in which the prism cut is biased at 80 degrees are formed in a concentrated manner, and are not formed in other parts of the inner lens 2. Now, to explain in more detail the position where the prism cut 2a is applied, since the reflex reflector 4 normally occupies a part of the area of the outer lens 3 as shown in FIG.
The prism cut 2a is also formed only at a position of the inner lens 2 corresponding to the width W and height H of the reflex reflector 4.

〓Effect〓 In this way, the prism cut 2 is placed only at the position on the back side of the reflex reflector 4 of the inner lens 2.
By implementing (a), the vehicle lamp of the present invention can reduce the light rays irradiated to the reflex reflector 4, which would otherwise not transmit light from the rear side, making the light rays from the light source 1 irradiated to this area ineffective. All of the beams are biased to the sides to form effective rays.

<Effects of the invention> As explained above, the present invention provides a vehicle lamp in which a prism cut that biases the irradiated light from the light source to the side is concentrated on the inner lens on the back side of the reflector. With this structure, the light rays irradiating the back side of the reflex reflector from the conventionally ineffective light source are now effective rays irradiating the sides,
This eliminates the need for the prism cut that was conventionally provided across the entire inner lens, and has the excellent effect of eliminating uneven brightness that occurs when viewing this vehicle lamp from the front, improving the sense of quality. This is also effective in improving safety by ensuring visibility without reducing the illuminance of the vehicle.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an embodiment of a vehicle lamp according to the present invention, Fig. 2 is an explanatory view showing the position of the prism cut of the same embodiment, and Fig. 3 is a cross-sectional view showing a conventional example. , FIG. 4 is an enlarged cross-sectional view of a conventional prism cut. 1...Light source, 2...Inner lens, 2a...
Prism cut, 3... Outer lens, 4...
Reflex reflector, W: Width of the reflex reflector, H: Height of the reflex reflector.

Claims (1)

[Claims for Utility Model Registration] There is a light source, an inner lens and an outer lens provided on the irradiation direction side of the light source, and a reflex reflector is attached to the main irradiation direction side within the light emitting surface of the outer lens. A vehicle lamp, characterized in that a prism cut is provided only on the back surface of the reflex reflector of the inner lens to bias the irradiated light from the light source to the side with respect to the main irradiation direction. Lighting equipment.