JPH0443501A - Headlamp device for vehicle - Google Patents

Abstract

PURPOSE:To eliminate a restriction on the design of a body and ensure less manufacture cost by providing an auxiliary lighting bulb emitting light through the aforesaid projection lens for illumination outside, within a case in such a way as to be positioned at an area excluding the passage of light emitted from a main illumination bulb. CONSTITUTION:Light M emitted from a headlamp bulb 16 is reflected at a reflector 15 and converges at a focal point F2. Thereafter, the light M diverges and enters a convex lens 14, thereby illuminating forward in a pattern of downward light distribution. Also, light S emitted from a position lamp bulb 17 enters directly the convex lens 14 and furthermore a part thereof enters the lens 14 after reflection at the reflector 15, thereby illuminating forward in a pattern of forward light distribution from the lens 14. Consequently, the headlamp device in the title can perform not only as a headlamp, but also as a position lamp, and it is unnecessary to provide an independent position lamp, thereby ensuring a high degree of freedom in the design of a body. Also, the position lamp can be constituted without any use of a separate convex lens or the like, and the quantity of parts can be lessened, thereby reducing manufacture cost.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a headlamp device for a vehicle, and particularly to a headlamp device that employs a projector type illumination lamp.

(Prior art) Projector type lighting has various advantages such as being able to obtain a light distribution pattern with clear brightness and darkness, and in recent years, it has been
It is also used in vehicle headlights, as described in Publication No. 8701. The headlight disclosed in JP-A No. 63-158701 has a case attached to the front of the vehicle body, a spheroidal reflector at the rear of the case, a floodlight lens at the front of the case, and a light reflecting lens inside the case. A bulb is provided to substantially coincide with the first focal point of the mirror, and the light emitted by the bulb is reflected by a reflecting mirror and projected forward by a convex lens. Inside the case, a shielding plate is provided near the second focal point of the reflecting mirror where the reflected light converges, so that it can be tilted to the left and right.
The direction of light distribution is adjusted by making this shielding plate appear and disappear within the light flux, that is, within the light passage range.

By the way, as is well known, in a vehicle, various auxiliary illumination lights such as a position lamp and a fog lamp are provided in the front part of the vehicle body in addition to the front illumination. Even in a vehicle configured with a type lighting device, a position lamp and a fog lamp each consist of a lens, a reflector, a bulb, etc. separately, and these headlamps, position lamps, fog lamps, etc. are arranged side by side at the front of the vehicle body.

(WI that the invention seeks to solve) However, in the above-mentioned vehicle, the design of the front part of the vehicle body is such that auxiliary illumination lights such as fog lamps are separately configured in parallel with the headlights at the front part of the vehicle body. Furthermore, since lenses and reflectors are essential for fog lamps and the like, there are problems in that the number of parts is large and the manufacturing cost is also high.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a headlamp device for a vehicle that does not restrict the design of a vehicle body and is inexpensive to manufacture.

(Means for Solving the Problems) This invention provides a case in which a case with an opening at the front is attached to the front of a vehicle body, a light projecting lens in the opening of the case, a reflector in the rear part of the case, and a light projecting lens and a reflector in the case. The light emitted by the bulb is condensed by a reflector between the reflector and the projecting lens, and then enters the projecting lens as diffused light and exits from the projecting lens. A headlight device for a vehicle that illuminates the front, wherein the case includes an auxiliary lighting bulb whose emitted light passes through the floodlight lens and is irradiated to the outside, and a light emitted by the main lighting bulb. The gist is that it is placed in an area other than the passing area.

(Function) The vehicle headlight device according to the present invention has a region where reflected light reflected by the 91 reflector converges and no light passes between the reflector and the projecting lens, and auxiliary illumination is provided in this region. Place the valve for. Therefore, the light emitted by the auxiliary lighting bulb can be reflected by the reflector and then emitted from the floodlight lens, and the light emitted from the auxiliary lighting bulb and the existing reflector or floodlight lens can be used to generate the auxiliary light, such as a position lamp. Or you can configure fog lights. Therefore, by assembling the headlights and auxiliary lighting lights such as position lamps, you can have great freedom in the design of the front of the vehicle, and you can also reduce the number of parts such as lenses or floodlight lenses, reducing manufacturing costs. can be reduced.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a vehicle headlamp device according to a 341st embodiment of the present invention.

In the figure, reference numeral 11 denotes a hollow outer case, and although it is not shown explicitly in the figure, since this headlamp device is provided on both left and right sides of the front part of the vehicle body, the outer case 11 is also provided on both left and right sides of the front part of the vehicle body. The outer case 11 is open at the front, the outer lens 12 is fitted into the opening, and the inner case 13 is housed within the outer case 11 . The inner case 13 also has a hollow shape with an opening at the front, and a convex lens (projection lens) 14 is fitted into the front opening. This inner case 1
Inside 3, there is a spheroidal reflector at the rear.
15 is fixedly installed, and a headlamp (main illumination) bulb 16 is fixedly installed between the reflector 15 and the convex lens 14. The convex lens 14 and the reflector 15 are on the optical axis C.
The focal point f of the convex lens 14 is located behind the second focal point F2 of the lid 15, and the bulb 16
is arranged to substantially coincide with the first focal point F of the reflector 15. Although not shown clearly in the figure, this bulb 16 has a filament for a passing beam and a filament for running, and is connected to a circuit not shown. As shown by the dashed line in the figure, the light emitted by the bulb 16 is reflected by the reflector 15, converges on the second focal point F2, diverges from the second focal point F2, and enters the convex lens 14.

Further, inside the inner case 13, a bulb 17 for a position lamp (auxiliary lighting) is provided upright on the lower wall. This bulb 17 is located below the second focal point F2 of the reflector 15 and outside the area through which the light emitted by the headlamp bulb 16 passes (hereinafter referred to as the passing area). This bulb 17 is also connected to a circuit or the like and emits light when energized.

In the headlamp device of this embodiment, as shown by the dashed line in the figure, the light M emitted by the headlamp bulb 16 is reflected by the reflector 15 and converged on the focal point F2, and then spread out and sent to the convex lens 14. and illuminates the front with a downward light distribution pattern. Further, as shown by the two-dot chain line in the figure, the light S emitted by the position lamp bulb 17 is directly reflected by the reflector 15 and enters the convex lens 14, and from the convex lens 14 it is directed forward (optical axis). illuminates the front with a light distribution pattern (horizontal). For this reason, this headlamp device can function not only as a headlamp but also as a position lamp, and there is no need to provide a separate position lamp, giving you great freedom in car body design. The structure can be configured without using any of the above components, and the number of parts can be reduced to reduce manufacturing costs. Since the position lamp bulb 17 is disposed outside the region through which the light M emitted by the headlamp bulb 16 passes, the light distribution pattern of the headlamp is not affected by the bulb 17.

In the above embodiment, the position lamp bulb 17 is placed in a position where it does not interfere with the light emitted by the headlamp bulb 16; It is also possible to obtain a desired light distribution pattern by using the bulb 17 as a shielding plate that blocks a part of the light, and when using the bulb 17 as a shielding plate, the light distribution pattern can be changed by making the bulb 17 appear and disappear within the passage area. is also possible.

FIG. 2 shows a second embodiment of the invention. In this second embodiment and a third embodiment to be described later, the same parts as in the first embodiment described above are designated by the same numbers, and the explanation thereof will be omitted.

In this second embodiment, the position lamp bulb 17 is arranged closer to the convex lens 14 than the focal point f and outside the light passage area.

In this second embodiment, the bulb 17 for the position lamp is
The light emitted by the convex lens 14 can be spread out at a larger angle and irradiated forward.

FIG. 3 shows a third embodiment of the invention.

In this third embodiment, a bulb 17 for a position lamp is supported at the lower part of the bracket 711, and a window hole 13a is formed in the inner case 13 in an upward direction M of the bulb 17.

In this third embodiment, a bulb 17 for a position lamp is used.
Since the light is far away from the optical axis C of the convex lens 14, the light distribution pattern as a position lamp can be made significantly different from the light distribution pattern as a headlamp.

In each of the embodiments described above, the position lamp bulb 17 is exemplified as an auxiliary lighting bulb, but it goes without saying that the present invention can also be achieved with a fog lamp bulb. The present invention can also be achieved by arranging both the position valve and the position valve adjacent to each other or symmetrically with respect to the optical axis C.

As explained above, according to the vehicle headlamp according to the present invention, the headlamp and the auxiliary lighting such as the fog lamp can be integrally configured by sharing a convex lens, etc. A degree of freedom is obtained, and the number of parts can be reduced, so manufacturing costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a vehicle headlamp according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a vehicle headlamp according to a 'jiS2 embodiment of the present invention, and FIG. 3 is a cross-sectional view of a vehicle headlamp according to a first embodiment of the present invention. FIG. 3 is a sectional view of a vehicle headlamp according to a third embodiment of the present invention. 13... Inner case 14... Convex lens (projection lens) 15... Reflector 16.17... Bulb (effect of the invention)

Claims (1)

[Claims] A case with an opening at the front is attached to the front of the vehicle body, a floodlight lens is mounted in the opening of the case, a reflector is mounted in the rear part of the case,
A bulb for the main light is installed between the floodlight lens and the reflector inside the case, and the light emitted by the bulb is focused between the reflector and the floodlight lens by the reflector, and then diffused light is sent to the floodlight lens. A headlight device for a vehicle that illuminates the front from a floodlight lens, wherein the case includes an auxiliary lighting bulb whose emitted light passes through the floodlight lens and is irradiated to the outside. A headlight device for a vehicle, characterized in that it is arranged in an area other than the area through which light emitted by a main lighting bulb passes.