FR2600402A1 - Rear signalling light with lateral lighting device for motor vehicle - Google Patents

Abstract

Rear signalling light with lateral luminous signalling device for motor vehicle, comprising a coloured transparent glass 1 for signalling the "stop", "sidelight" and lateral lighting functions, a first filament 7 of an electric bulb 4 operating with a first reflector 5 in order to illuminate the "stop" zone 2 of the said glass 1 and a second filament 8 of the electric bulb 4 operating with a second reflector 5 in order to illuminate the "sidelight" zone 2 of the said glass 1. The light according to the invention comprises at least a third substantially parabolic reflector 10, 11, 12 with an axis which is oblique with respect to the axes of the said first and second reflectors 5 in order to illuminate the "lateral lighting" zone 3 of the said glass 1 by reflection on the said third reflector 10, 11, 12 of the light rays coming from the said second filament 8. Application to the car industry.

Description

Rear signaling light with side lighting device for motor vehicle.

The invention relates to a side light signaling device for motor vehicles, which device is compulsory in certain countries and authorized in others combined with a rear light.

In known devices of this type, an electro bulb which, with its supply means, using a reflector and through a transparent colored glass of suitable optical design, provides the side signaling function.

Lateral signaling devices are also known in which the bulb, its reflector and its glass are incorporated in a rear signaling light comprising a lateral return. The latter solution allows integration into a compulsory assembly, therefore a saving compared to an independent lateral signaling device. However, for reasons of space and aesthetics, this solution is not always usable.

In addition, in all cases, a special light source, with its power supply, is always necessary, which complicates assembly and connection and increases the cost price.

In addition, in order to distribute the light, it is often planned to add a stepped screen between the bulb and the transparent glass.

The present invention aims to simplify the construction of a rear light assembly - lateral signaling device by saving an electric bulb while ensuring a good distribution of the light flux without an intermediate screen.

To this end, the subject of the invention is a rear signaling light with a lateral light signaling device for a motor vehicle, comprising a transparent colored window for signaling the "stop", "lantern" and lateral lighting functions, a first filament of electric bulb operating with a first reflector for lighting the "stop" area of said window and a second filament of electric bulb operating with a second reflector for lighting the "lantern" area of said window lens, characterized in that it comprises at least a third substantially parabolic reflector with an oblique axis with respect to the axes of said first and second reflectors for ensuring the illumination of the "lateral lighting" range of said lens by reflection on said third reflector of the light rays from said second filament
The use of a specific reflector, associated with the filament of the "lantern" function, makes it possible to ensure the lateral signaling function without additional bulb, even if the filament of the "lantern" function cannot directly illuminate the range of the lateral signaling function. Even when the "lantern" filament can directly illuminate the lateral signaling range, the invention makes it possible to avoid bringing back a stepped screen to concentrate the rays coming from this filament.

In one embodiment of the invention, said third reflector is formed on the base of the light. Alternatively, it can be formed on a part projecting from said base, attached or in one piece with said base.

In a preferred embodiment, the first and second filaments are part of an electric bulb with two filaments and the "stop" and "lantern" areas of the transparent glass are combined, as are the first and second reflectors.

 The inventor will be well understood on reading the following description made with reference to the accompanying drawing in which: - Figure 1 is a plan view of a signal light according to an exemplary embodiment of the invention, - the FIG. 2 is a sectional view along the line AA in FIG. 1, and FIG. 3 is a sectional view along the line BB in FIG. 2.

In the example described, the light is of the type in which a transparent lens 1 has a range 2 common to the "stop" and "lantern" functions and a range 3 for the lateral lighting function. A double filament light bulb 4, placed in the center of a reflector 5 molded with the base 6 of the light, comprises a high power filament 7 (generally 21W) whose power supply ensures the "stop" function by reflection on the reflector 5 and a low power filament 8 (generally 5W) for the "lantern" function. In known manner, a reflector 9 is incorporated in the glass 1.

 In accordance with the invention, side reflectors 10, 11 and 12 are provided in addition to the reflector 5. In the embodiment described, the additional reflectors 10, 11, 12 are provided on the base 6, in addition to the reflector 5 , and are metallized at the same time as it.

The reflectors 10, 11, 12 have their axes oblique to the axis of the reflector 5 and are arranged so that the light rays emitted by the "lantern" filament 8 are reflected in parallel beams striking the area 3 of lateral lighting. , through an opening 13 formed in the base 6.

The reflectors -10,11,12 can be reduced to the single reflector 11 or be in a number different from three; in particular, it is possible to provide a large number of elementary reflectors connected by transverse walls.

Despite the distance of the filament 8 from the area 3 and the fact that this filament 8 is hidden from this area, an illumination of the area 3 is obtained in accordance with the requirements, without special bulb or screen.

Claims (4)

CLAIMS. 1.- Rear signaling light with lateral light signaling device for a motor vehicle, comprising a transparent colored window (1) for signaling the "stop", "lantern" and lateral lighting functions, a first filament (7) d electric bulb (4) operating with a first reflector (5) for lighting the "stop" area (2) of said lens (1) and a second filament (8) of electric bulb (4) operating with a second reflector (5) for lighting the "lantern" area (2) be said glass (1), characterized in that it comprises at least a third substantially parabolic reflector (10,11,12) to oblique axis relative to the axes of said first and second reflectors (5) for lighting the "lateral lighting" area (3) of said lens (1) by reflection on said third reflector (10,11,12) of the rays light from said second filament (8) 2.- Signaling light according to claim 1, characterized by the fact that said third reflector (10,11,12) is formed on the base (6) of the light. 3.- Signaling light according to claim 1, characterized in that said third reflector (10,11,12) is formed on a part projecting from said base (6), attached or in one piece with said base (6). 4.- Signaling light according to one of claims 1 to 3, characterized in that the first and second filaments (7,8) are part of an electric bulb (4) with two filaments and the "stop" areas ( 2) and "lantern" (2) transparent glass (1) are combined as well as the first and second reflectors (5). 5.- Signaling light according to one of claims 1 to 4, characterized in that the lighting of the area (3) of lateral signaling is carried out through an opening (13) formed in the base (6).