JPH09185908A - Vehicle signal lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of such a phenomenon as the part of a reflector luminescence portion becomes dark when a light source is lightened by letting the reflector luminescence portion also become luminous by the light from the light source. SOLUTION: In a vehicle signal lighting fixture 1, a reflector is formed by integrating a reflection hologram 6 on the outer face of an outer lens 5. Outer light S is reflected and light from a light source 3 reaching the outer lens 5 from the opposite side face of the outer light S penetrates. Accordingly, also the part to be a reflection hologram 6-provided reflector luminescence portion 5B emits light just like a part where no reflection hologram 6 is provided so as to be a light source light emission portion 5A when the light source 3 is lighted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular signal lamp, such as a tail lamp, and more particularly to a reflector called a reflex reflector or RR on the lens surface of an outer lens of the lamp. The present invention relates to the configuration of a lamp provided with.

[0002]

2. Description of the Related Art FIG. 4 shows an example of the configuration of a conventional vehicular signal lamp 90 of this type.
A light source 92 such as an incandescent lamp is provided in a housing 91 of No. 0, and a paraboloidal reflecting mirror 93 having the light source 92 as a focal point is provided.
The light from the lens is incident on the outer lens 94 as a parallel light beam P, and the lens cut 94 is applied to the outer lens 94.
The light is appropriately diffused at a and emitted to the outside.

Further, a recursive reflector 95 called RR is provided on a part of the lens surface of the outer lens 94, and approaches even when the light source 92 is turned off, for example, at night parking. The external light S from the headlamp of another vehicle is reflected so as to return to the direction in which the external light S is emitted, and the returning reflected light notifies the existence of the own vehicle.

[0004]

However, in the above-described conventional vehicular signal lamp 90, the reflector 95 emits light from the rear surface, that is, the light source 92 converted into the parallel light beam P by the reflecting mirror 93. Since it is opaque and does not transmit light, the outer surface (viewing side) of the outer lens 94 on which the reflector 95 is provided does not emit light when the light source 92 is turned on. .

Therefore, on the lens surface of the outer lens 94, a light source emitting section 94A for emitting parallel light rays P from the light source 92 through the reflecting mirror 93 and a reflection for emitting the external light S from the reflector 95 are reflected. Since the light emitting section 94B and the light emitting section 94B are independent of each other and each requires a predetermined area, the area required for the outer lens 94 is the sum of the light source emitting section 94A and the reflector light emitting section 94B. This causes a problem that the vehicle signal lamp 90 becomes large in size.

Further, the vehicular signal lamp 9 having the above structure.
When observing 0 with the light source 92 turned on, the reflector 95 is opaque as described above,
The portion of this reflector 95 does not emit light, and the outer lens 94
There is also an aesthetic problem such as a dark part on the lens surface which gives the viewer a feeling of strangeness, and it is a problem to solve these problems.

[0007]

As a concrete means for solving the above-mentioned conventional problems, the present invention is provided with a reflector for reflecting external light on the lens surface of an outer lens,
In a vehicular signal lamp, wherein the lens surface includes a light source light emitting portion that emits light from a light source and a reflector light emitting portion that emits light reflected by external light reflected by the reflector, wherein the reflector is the outer surface of the outer lens. A signal hologram for a vehicle, wherein the light source light emitting portion and the reflector light emitting portion are positionally overlapped with each other to form a reflection hologram that reflects external light and transmits light from the light source. By providing
This is to solve the above-mentioned conventional problem.

[0008]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIGS. 1 and 2 is a vehicular signal lamp according to the present invention. Inside the housing 2 of the vehicular signal lamp 1, a light source 3 such as an incandescent light bulb, and the light source 3 are focused. This is the same as in the conventional example in that a reflecting mirror 4 having a paraboloid of revolution is provided, and the light from the light source 3 is made to enter the outer lens 5 as parallel rays by the reflecting mirror 4.

Also, the point that a reflector is provided on the lens surface of the outer lens 5 is similar to the conventional example, but according to the present invention, the reflector is provided in a predetermined direction defined by a standard or the like. The reflection hologram 6 generates reflected light in almost the same direction with respect to the incidence of the external light S from, and is integrated with the outer surface of the outer lens 5.

At this time, the vehicular signal lamp 1 is required to generate reflected light in a wide range of incident directions with respect to the left-right direction in the mounted state. In order to correspond to S, the predetermined range in which the external light S should be reflected is divided into a plurality of ranges, and holograms corresponding to the respective ranges are attached, or the light distribution standard of this kind of reflector is met. By multiple exposure, it is formed as one hologram that satisfies the relevant standards.

The outer lens 5 and the reflection hologram 6 are integrated by, for example, providing a photosensitive film made of a photosensitive material on the outer surface side of the outer lens 5 and baking the photosensitive film with a photographic means. Alternatively, the reflection hologram 6 previously formed in the form of a film may be attached to the outer lens 5 or may be integrated by means such as integral molding at the time of molding the outer lens 5.

Further, according to the present invention, the surface of the outer lens 5 on the light source side is provided with the lens cut 5a on the rear surface on which the reflection hologram 6 is provided. At this time, since the reflection hologram 6 is provided on the outer surface of the outer lens 5 in the form of a film or the like as apparent from the above description, mutual interference does not occur when the lens cut 5a is provided. Absent.

In this type of vehicle signal lamp 1, instead of the reflecting mirror 4, a light source 3 and an outer lens 5 are used.
A Fresnel lens having a focus on the light source 3 is provided between
There is a configuration (illustration is omitted) in which the light from the light source 3 is made to enter the outer lens 5 as parallel light rays by the Fresnel lens, but the present invention also applies to the vehicular signal lamp 1 employing the Fresnel lens. It can be implemented.

Next, the operation and effect of the vehicular signal lamp 1 of the present invention having the above-mentioned structure will be described. First,
When external light S from the headlamps of other vehicles is received on the surface of the outer lens 5 of the vehicular signal lamp 1 when the light source 3 is not lit, such as when the vehicle is parked at night, this outer lens 5
The reflection hologram 6 provided on the outer surface of the element reflects the external light S and functions as a reflector.

At this time, since the reflection hologram 6 is not necessarily provided so as to cover the entire area of the lens surface of the outer lens 5, the reflection hologram 6 is provided for the light emission due to the reflection of the external light S described above. This is performed within the area range, that is, the area where the reflection hologram 6 of the outer lens 6 is provided becomes the reflector light emitting section 5B.

When the light source 3 is turned on, since the reflection hologram 6 is provided as a thin film on the outer surface side of the outer lens 5, it is converted into a parallel light beam P through the reflection mirror 4. The light from the light source 3 reaches almost the entire light source side surface including the back surface of the reflection hologram 6 of the outer lens 5.

Since the reflection hologram 6 also reflects light having an incident angle opposite to the external light S among the light (red component) incident from the light source 3, when the light source 3 is turned on, the hologram is Attenuation of the amount of light passing through 6 occurs.
Therefore, in the present invention, the required light amount is transmitted by reducing the red reflectance of the hologram 6 to, for example, 50%.

Therefore, when the light source 3 is turned on, substantially the entire surface of the outer lens 5 emits light to become the light source light emitting portion 5A,
The reflector light emitting section 5B also emits light and functions as a part of the light source light emitting section 5A. That is, in the vehicular signal lamp 1 of the present invention, the reflector light emitting portion 5B is provided in a state of overlapping with the light source light emitting portion 5A. Therefore, the area of the light source light emitting portion 5A is reduced by providing the reflector. There is nothing to do.

FIG. 3 shows another embodiment of the present invention. In the previous embodiment, the reflection hologram 6 was integrated on the outer surface side of the outer lens 5, but in this embodiment, for example, The reflection hologram 6 is integrated with the inner surface of the outer lens 5 for the purpose of preventing the performance of the reflection hologram 6 from being damaged by dust or the like.

The light source light emitting section 5A and the reflector light emitting section 5
In order to exist in a state of overlapping with B, the outer lens 5 is not provided with the lens cut 5a, and the inner lens 7 is provided further on the inner surface side of the outer lens 5, and the inner and outer surfaces of the inner lens 7 are provided. The objective is achieved by providing a lens cut 7a (shown in the example of the inner surface side) on either side.

[0021]

As described above, according to the present invention, a reflector for a vehicle is formed by integrating a reflection hologram on the outer surface of an outer lens. Assuming that the light from the light source that reaches the outer lens from the surface opposite to the light is transmitted, the reflection hologram is provided and the portion serving as the reflector light emitting portion is also provided with the reflection hologram when the light source is turned on. The light source emits light in the same manner as the non-illuminated portion, and serves as a light source emitting portion.

Therefore, in the vehicular signal lamp according to the present invention, the reflector light-emitting portion can overlap with the light-source light-emitting portion, that is, can also serve as a light-emitting portion, and an area required individually for each light-emitting portion can be secured. Therefore, it is possible to obtain an extremely excellent effect in reducing the size of the vehicular signal lamp.

Further, as described above, since the reflector light emitting portion also emits light from the light source, the conventional opaque reflector of this type is adopted when the light source is turned on. The phenomenon that the reflector light emitting part becomes darker, which occurred in the vehicular signal light, is not caused, the viewer does not feel uncomfortable, and it is also excellent in improving aesthetics. Will be things.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a vehicular signal lamp according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view showing another embodiment of the vehicular signal lamp according to the present invention.

FIG. 4 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 ... Vehicle signal lamp 2 ... Housing 3 ... Light source 4 ... Reflecting mirror 5 ... Outer lens 5a ... Lens cut 5A ... Light source emitting section 5B ... Reflector emitting section 6 ... Reflecting hologram 7 ... … Inner lens 7a …… Lens cut

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinji Namba 7-12-9 Koyama-cho, Kariya city, Aichi prefecture (72) Inventor Haruo Teraoka 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72 ) Inventor Toshiyuki Kondo 7-8-3 Motonakayama, Funabashi City, Chiba Prefecture (72) Inventor Yoshikazu Maeda 1-12-6 Megurohonmachi, Meguro-ku, Tokyo

Claims (1)

[Claims] 1. A reflector for reflecting external light is provided on a lens surface of an outer lens, and the lens surface emits a light source by a light source, and a reflector light emitting by the reflected light of the external light by the reflector. In the vehicular signal lamp including a portion, the reflector is integrated with either the inner or outer surface of the outer lens, and is a reflection hologram that reflects external light and transmits light from the light source. A signal lamp for a vehicle, wherein the light source light-emitting portion and the reflector light-emitting portion overlap in position.