JPS5833603Y2 - wide range illumination lamp - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wide range illumination lamp suitable for vehicle headlamps and the like.

Current headlamps have a narrow lateral illumination range, making it difficult to see around curves.

The purpose of the present invention is to provide a lamp with a wide irradiation range.

Therefore, the present invention includes a light source, a first reflecting mirror rotatably supported around the light source, a driving source for rotating the first reflecting mirror, and a drive source arranged outside the rotation area of the first reflecting mirror. A wide irradiation range can be obtained by rotating the first reflecting mirror.

Preferably, a lamp is provided as the light source, and an electric motor is used as the drive source for rotating the first reflecting mirror.

The light source may be fixed and the first reflecting mirror may revolve around the light source, or the light source and the first reflecting mirror may rotate together, but the first reflecting mirror may be substantially fixed. The configuration may be such that a relationship in which the light source revolves around the light source is obtained.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an example in which the present invention is implemented as a headlamp for a vehicle, in which a parabolic reflector 2 is attached to a front grille 1 of the vehicle so as to be rotatable within a substantially horizontal plane.

A light bulb 3 as a light source is attached to the focal point of a parabolic reflector 2.

This light bulb 3 may be configured to rotate together with the reflecting mirror 2, or may be fixed so that only the reflecting mirror 2 rotates and the bulb 3 does not rotate.

A motor 4 for rotating the reflector 2 is disposed, for example, in an engine room, and the reflector 2 is caused to revolve around the light bulb 3 by operating the motor 4.

Another parabolic reflector 5 is fixed behind the reflector 2 and the light bulb 3, while a lens 6 is arranged in front as shown in FIGS. 2 to 4.

At this time, the light bulb 3 is placed so as to be located almost at the focal point of the reflecting mirror 5.

For example, when the reflector 2 is rotated counterclockwise as shown in FIG. 2, the direct light from the light bulb 3 and the reflected light by the reflector 2 are rotated counterclockwise from the direction shown by arrow A to the direction shown by arrow B. After the reflector 2 is turned to the side, the direct light from the bulb 3 and the reflector 2 are rotated 180 degrees backward.
The reflected light is reflected by the second reflecting mirror 5 and rotates from the direction shown by the arrow to the direction shown by the arrow E.

When the reflecting mirror 2 is rotated in this manner, the light from the light bulb 3 is manipulated in a fixed direction regardless of whether the reflecting mirror 2 is facing forward or facing backward.

As described above, in this embodiment, the light hitting a certain position in front of the vehicle becomes a pulse as shown by E in FIG. As shown by the upper diagonal line, the eye's afterimage effect makes it feel like the eye is constantly illuminated with light, and the flickering sensation is weakened.

In this embodiment, the reflecting mirror 2 may be separate from the light bulb 3, or the reflecting mirror 2 may be formed by forming a metal coating on the inner surface of the glass of the light bulb 3.

In addition, when the wide range illumination lamp shown in this embodiment is used as a vehicle headlamp, it is desirable to fix the reflector 2 so that the light is irradiated directly in front of the vehicle when the vehicle is traveling straight. , the rotation is started by a switch operated by the driver of the vehicle when the vehicle approaches a curve.

As described above, in this invention, a reflecting mirror that rotates around the light source and a second reflecting mirror placed behind it are provided, so that the lateral irradiation range can be widened.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the present invention implemented in a vehicle headlamp, Figs. 2 and 3 are sectional views taken along line A-A in Fig. 1, and Fig. 4 is a sectional view taken along line BB in Fig. 1. , FIG. 5 is a diagram showing the amount of light hitting a certain position in front of the vehicle in relation to time. 2... Parabolic reflector, 3... Light bulb, 4
...Motor, 5...Parabolic reflector.

Claims (1)

[Scope of utility model registration request] a light source; a first reflecting mirror rotatably supported around the light source; a driving source for rotating the first reflecting mirror;
and a fixed reflector located outside the swivel area of the reflector.