JPH0612563Y2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a vehicular lamp such as a signal light and a sign light.

<Prior art> Signals and signs for automobiles include front turn signal lamps, clearance lamps, parking lamps arranged at the front of the vehicle body, rear turn signal lamps, tail lamps, stop lamps arranged at the rear portion of the vehicle body. There are lamps, backup lamps, side turn signal lamps installed on the side of the vehicle body, and so on. These lamps
In order to have different functions and satisfy each light distribution performance, they are arranged independently or in combination with the vehicle body, and basically, the housing and the lens define the lamp chamber, One lamp bulb is installed on the vehicle body. Like a rear combination lamp, the same red tail lamp and stop lamp are configured in one lamp room, and this is combined with a turn signal lamp, a backup lamp, etc. to reduce the weight and cost of the lamp. It can be reduced.

<Problems to be solved by the invention> By the way, some front turn signal lamps and side turn signal lamps also have a single lamp structure to reduce the weight and cost of the lamp.
This is because a housing and a lens define a lamp chamber, a lamp bulb is provided in the lamp chamber, and the lamp bulb is attached to the front corner of the vehicle body so that the light emitted from the lamp bulb is directed to the front, side, and rear sides. It was made to irradiate. However, it is difficult to obtain sufficient light distribution in three predetermined different directions, especially to the rear side by using only one lamp bulb. Generally, two lamp bulbs are used or independent lamps are used. It is arranged.

Therefore, in the present invention, a lamp having different functions by one light source arranged in one lamp chamber, for example, a front turn signal lamp and a side turn signal lamp, is fully integrated so as to sufficiently satisfy respective light distribution performances. An object of the present invention is to provide a vehicular lamp that can be used.

<< Means for Solving the Problems >> In order to solve the above-mentioned problems, a vehicle lamp according to the present invention is arranged at a corner portion of a vehicle body, has a wide opening in the front surface, and has a main reflecting mirror in the rear portion. A lamp body having, a lamp bulb disposed in a recess provided in the main reflecting mirror, and a transparent colored cap surrounding the lamp bulb,
A lens joined to the opening of the lamp body, and forming a prism on a part of an outer peripheral surface of the coloring cap, the prism directing light emitted from the lamp bulb toward the rear side, and the main reflecting mirror. Reflection for reflecting light from the lamp bulb between the inside of the colored cap and the lamp bulb in the ineffective reflection part formed by the concave portion of the lamp through the lamp center of the lamp bulb toward the prism of the colored cap. It is characterized by having a surface.

<Operation> The light emitted from the lamp bulb changes into colored light through the transparent colored cap and is diffused forward and sideward through the lens. At the same time, the direct light from the lamp bulb and the colored cap and the lamp bulb inside the lamp body The light reflected by the reflecting surface formed between and is emitted toward the rear side by the prism formed on the outer peripheral surface of the colored cap.

<< Embodiment >> FIG. 1 shows an embodiment of a vehicular lamp according to the present invention.

The vehicular lamp 1 is mounted on a front corner of a vehicle body along the outline of the vehicle body. The housing 3 is a lamp body having an opening 2 on the front surface, and a lamp bulb disposed in the housing 3. 4 and a transparent amber cap 5 surrounding the same, and a lens 6 bonded to the front surface of the housing 3.

The housing 3 is integrally formed of synthetic resin, and is formed so as to extend along the corner portion of the vehicle body along the opening 2 on the front surface, that is, to widen from the front portion to the side portion of the vehicle body. Are formed. In addition, a main reflecting mirror 8 formed in a parabolic shape facing the front is provided at the rear portion.
A concave portion 9 serving as an ineffective reflection portion is formed in the center portion of the concave portion, and a socket mounting hole 10 is formed in the central portion of the concave portion 9. Furthermore, a concave step portion 11 for inserting and placing the amber cap 5 having a lower outer half portion is formed on the entire peripheral edge of the concave portion 9, and the amber cap in the invalid reflecting portion formed by the concave portion 9 of the main reflecting mirror 8 is formed. The light from the lamp bulb 4 is reflected between the inside of the lamp bulb 5 and the lamp bulb 4 through the lamp center P of the lamp bulb 4 (see FIG. 2) toward the prism 18 on the outer peripheral surface of the amber cap 5. A parabolic reflection surface 12 is formed. In addition,
In the figure, 13 is a screw hole formed in a concave shape.

The lamp bulb 4 is inserted into a socket 14 attached to a rear socket attachment hole 10 of the housing 3 and held in the housing 3.

The amber cap 5 has a cylindrical shape that covers the entire lamp bulb 4 held in the housing 3 and closes the front surface, and its rear end portion is formed in a step shape along the concave step portion 11 of the housing 3, and a part thereof is formed. A screw insertion portion 15 corresponding to the screw hole 13 of the housing 3 is provided on the. Further, on the front surface, a Fresnel prism 16 is formed on the back surface side, and on the front surface side, a cylindrical lens 17 arranged in a circular shape laterally to the optical axis is formed. Further, on a part of the outer peripheral surface, a refraction-type Fresnel prism 18 that refracts received light in parallel to the rear side is formed in a square shape. Then, with the lamp bulb 4 covered, the rear end portion is fitted and arranged according to the shape on the concave step portion 11 of the housing 3, and the screw 19 through which the screw insertion portion 15 is inserted is screwed into the screw hole 13 of the housing 3. It is attached by wearing.

The lens 6 is formed along the outline of the front corner of the vehicle body, the longitudinally arranged cylindrical lens 20 is formed on the back surface, and the refraction system of the amber cap 5 described above is formed at the outer rear end. A refraction prism 21 is formed that receives light refracted rearward by the Fresnel prism 18 and further refracts the light rearward. Then, the leg portion 22 provided on the entire peripheral edge of the lens 6 is inserted into the groove portion 7 on the peripheral edge of the opening 2 of the housing 3 and joined by a sealant 23 such as hot melt (see FIG. 2).

In this vehicular lamp 1, the light emitted from the lamp bulb 4 is changed to orange light through the amber cap 5, and a part of the light is collimated by the Fresnel prism 16 in front of the amber cap 5 as shown in FIG. The cylindrical lens of the front side lens 6 is diffused in the vertical direction by the cylindrical lens 17, and the other part is transmitted through the amber cap 5 as it is, reflected by the reflecting surface 8 of the housing 3 and collimated into orange light. The light is diffused in the left-right direction toward the front and side through 20 and emitted. At the same time, the direct light from the lamp bulb 4 incident on the refractive Fresnel prism 18 on the outer peripheral surface of the amber cap 5 and the concave step portion 11 formed on the inner surface of the housing 3 are formed.
That is, the reflected light from the reflecting surface 12 formed between the amber cap 5 and the lamp bulb 4 is refracted parallel to the rear side, and this is further rearward by the refraction system prism 21 of the side lens 6. It is refracted and emitted.

In this way, this lamp can simultaneously satisfy the light distribution as the front turn signal lamp and the light distribution as the side turn signal lamp with one light source, and particularly, in the rearward direction emitted from the lamp bulb 4. The light is reflected by the reflecting surface 12 formed between the amber cap 5 on the inner surface of the housing 3 and the lamp bulb 4 toward the refractive Fresnel prism 18 of the amber cap 5, and is directed to the rear side together with the direct light of the lamp bulb 4. As a result, the amount of light is increased by validating the ineffective light to the rear of the housing 3, and sufficient rearward light distribution required for the side turn signal lamp can be obtained.

In this embodiment, the reflecting surface 12 provided between the amber cap 5 on the inner surface of the housing 3 and the lamp bulb 4 is formed in a parabolic shape, but it may be formed in a spherical shape instead. The same effect can be obtained.

<< Advantages of the Invention >> As described above, according to the vehicular lamp of the present invention, a lamp body having a wide opening arranged in a corner portion of a vehicle body, a lamp bulb arranged in the lamp body, and A transparent colored cap that surrounds the lamp bulb,
With a lens that is joined to the opening of the lamp body, a prism that faces the rear side in response to the light emitted from the lamp bulb is formed on a part of the outer peripheral surface of the coloring cap, and the coloring cap on the inner surface of the lamp body. Since a reflecting surface for reflecting the light from the lamp bulb toward the prism of the coloring cap is provided between the lamp bulb and one lamp, the light is distributed in three different directions at the same time, that is, in the front, side, and rear sides. For example, the light distribution as the front turn signal lamp function and the light distribution as the side turn signal lamp function can be satisfied at the same time. In particular, the light reflected by the reflecting surface formed between the colored cap on the inner surface of the housing and the lamp bulb is emitted toward the rear side together with the direct light of the lamp bulb by the prism on the outer peripheral surface of the colored cap. It is possible to obtain a sufficient amount of light toward one side, and it is possible to significantly improve the visibility. Further, it is needless to say that each function can be configured in one lamp, and the weight and cost of the lamp can be reduced.

In particular, since the reflecting surface is provided between the inside of the colored cap and the lamp bulb in the ineffective reflecting portion formed by the concave portion of the main reflecting mirror, this reflecting surface allows the inside of the colored cap and the lamp bulb inside the housing to be closer to the lamp bulb than the lamp bulb. Effectively utilize the reflected light distributed between the lamp and the lamp, through the lamp center of the lamp bulb, to distribute the light to the prism on the outer peripheral surface of the coloring cap, and direct it to the rear side along with the direct light of the lamp bulb. Since the light is emitted, a sufficient amount of light to the rear side can be obtained, and the visibility can be significantly improved.

Further, if the concave portion of the main reflecting mirror provided with the reflecting surface becomes a so-called invalid reflecting portion of the main reflecting mirror 8 if the reflecting surface is not provided, by providing the reflecting surface 12, the lamp The light from the bulb is reflected, passes through the center of the lamp bulb, and is directed toward the prism provided on the outer side surface of the coloring cap. Therefore, without sacrificing the reflection area of the main reflection mirror, which is the effective reflection surface. , The entire surface can be effectively used. It is also necessary to set the prism of the colored cap separately for direct light from the lamp bulb and for reflection from the reflective surface by making the reflected light from the reflective surface a light distribution that passes through the center of the lamp bulb. do not do.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a vehicular lamp according to the present invention, and FIG. 2 is a sectional view for explaining the operation of the lamp. 2 ... Aperture, 3 ... Housing (lamp body), 4 ...
… Lamp bulb, 5 …… Coloring cap, 6 …… Lens,
12 ... Reflecting surface, 18 ... Refractive Fresnel prism.

Claims (1)

[Scope of utility model registration request] 1. A lamp body provided at a corner portion of a vehicle body, having a wide opening in a front surface thereof, and having a main reflecting mirror at a rear portion thereof, and a lamp bulb arranged in a recess provided in the main reflecting mirror. A transparent colored cap that surrounds the lamp bulb and a lens that is joined to the opening of the lamp body are provided, and the rear side that receives light emitted from the lamp bulb on a part of the outer peripheral surface of the colored cap. A prism directed to the main reflection mirror, and the light from the lamp bulb is directed to the center of the lamp bulb between the inside of the colored cap and the lamp bulb in the ineffective reflection portion formed by the recess of the main reflecting mirror. A vehicular lamp having a reflection surface for reflecting the light toward the prism of the through-coloring cap.