JPS6022481Y2 - automotive lighting system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device for a headlamp of an automobile, and is particularly concerned with improving a lighting device for inspection of compliance with safety standards of the lighting device.

Vehicle lighting systems must be properly calibrated in accordance with the provisions of safety standards.

Each country has its own independent safety standards for automobiles, which require legal compliance inspections, but in Japan, there are safety standards for road transportation vehicles, and automobile lighting systems must comply with the standards in each section. is requesting.

The headlight tester method, which uses a photoelectric element to capture the light emitted from the lighting device and electrically measure the illuminance and direction of the optical axis, is often used for this compliance test.

In this case, the light emitting part and the center position of the light emitting part (hereinafter referred to as "display part" and "center") of the lighting device are measured when installed on the actual vehicle. Conventionally, the positioning of the display part, etc. is done by pasting tape on the lens surface. I went.

Tape must be pasted on the lens surface in five locations: top, bottom, left, right, and center of the display. Also, tape is required for each function of each lighting device, so it can be used for taillights, control lights, direction indicators,
In the case of a lighting system that is combined with a reversing light, etc.
The pasting process required a lot of effort.

In addition, when applying tape to the lens surface, the tape is applied manually to the lens surface each time by checking the tape application position indicated in the drawing, which results in lack of accuracy and unevenness, and the lens gets stained by the tape glue. There were drawbacks such as.

The present invention solves these conventional problems and is intended to improve the accuracy and labor-saving of standard compliance inspections.

The configuration of an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a front view of an embodiment of the present invention, and numeral 1 indicates a display portion of a lens 5 of a lighting device.

A convex projection 2 is provided at the center of the lens 5 of the lighting device and at the intersection of the two center lines and the display section.

An enlarged sectional view of the convex projection 2 of this lens is shown in FIG.

FIG. 2 is a sectional view taken along the line ■-■ in FIG. 7, the lens 5 is attached via a waterproof gasket 4.

The inner surface of the lens is vertically or horizontally corrugated so that the light source is weak at both ends, strong at the center, and larger horizontally than vertically.

The reflecting mirror 8 is finished in a parabolic shape, and by depositing aluminum on the glass material, the reflectance of the light source is improved.

The housing 3 is attached to the body of the automobile by attaching the retainer to the lamp mounting with a mounting screw, and the housing 3 is attached to the body by a position adjustment screw and a spring (not shown).
.

Therefore, when installing the lighting device, the direction of the main optical axis of the lighting device can be adjusted by turning the position adjustment screw.

In FIGS. 2 and 3, the light from the bulb 6 is reflected by a reflecting mirror, and the reflected light P causes the lens 5 to emit light.

Therefore, the light emitting part of the lens 5 falls within the range 1 shown in FIG. 1, and this range is called the display part.

Here, convex protrusions 2 are provided at the center position of the display section 1 of the lens and at appropriate positions above, below, left and right, so that the center of the display section 1,
It also displays the top, bottom, left and right positions.

By providing the convex protrusion 2 on the lens 5 in this way, the position of the convex part on the lens can be directly measured during the standard conformity inspection to determine the display top, bottom, left, right and The center dimension can be easily calculated.

In order to form a convex projection on a lens, it is sufficient to make a mark indicating the display portion and center on the lens mold during lens molding, and uniform lenses can be manufactured in large quantities with a simple manufacturing process.

The present invention aims to save labor and improve accuracy in safety standard compliance inspections of road transportation vehicles by providing an appropriate number of convex projections indicating the display part and center on the lens of an automobile lighting device as described above. It was designed to be guaranteed.

In other words, in the past, tape was pasted to the lens of a lighting device to indicate the display area and center at any time during compliance inspection, but by using the lighting device of the present invention, such complicated manual steps can be eliminated. In addition, it is possible to prevent the lens from becoming dirty due to the adhesive tape.

In the standard compliance inspection, we simply measure the position of the convex part on the lens surface, measure the horizontal and vertical vibration of the display section and optical axis, and adjust the position of the lighting system to comply with the standard provisions. It is possible to install a lighting device that has the correct display part and optical axis for the current situation.

[Brief explanation of drawings]

FIG. 1 shows a front view of an embodiment of the present invention. FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. FIG. 3 is a sectional view taken along the line ■-■ in FIG. 1. FIG. 4 shows an enlarged view of the convex protrusion on the lens according to the embodiment of the present invention. 1: Light emitting part, 2: Convex projection, 3: Housing, 5: Lens, 6: Light source (bulb), 8: Reflector.

Claims (1)

[Scope of utility model registration request] A lighting device for an automobile comprising a lens, a light source, a reflector, and a housing, in which a plurality of convex protrusions are provided on the surface of the lens attached to an opening of the housing to indicate the optical axis and light emitting part of the lighting device. .