JPH10134604A - Headlamp for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the glare given to a vehicle running in the opposite direction without switching a headlamp to a low beam by forming the upper side required region of the lens of the headlamp into a ground glass state. SOLUTION: The upper side required region 2 of the lens 1 of a headlamp, i.e., the region of the range that no glare is given to a vehicle running in the opposite direction during a travel by it with a high beam, is formed into a ground glass state by machining. The light of the high beam emitted from a light source, passing through the upper side required region 2 through a reflecting mirror 3 and irradiating the front, is diffused and the blare to the vehicle running in the opposite direction disappears. The ground glass machining may be set to such degree that the glare can be reduced to sufficiently secure safety for the vehicle running in the opposite direction, and the headlamp may have sufficient brightness to reach a sufficiently far distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile headlamp and, more particularly, to an anti-glare treatment for a lens thereof.

[0002]

2. Description of the Related Art It is needless to say that a headlamp of an automobile is intended to illuminate the front of the vehicle at night, but at the same time, it must not give glare to oncoming vehicles when passing by another vehicle due to traffic safety. Is required. Conventionally, there are two-lamp and four-lamp headlamps in automobile headlamps, but when passing an oncoming vehicle, each of them has a lower beam angle than a normal beam called a traveling beam, This required an operation to switch to a so-called passing beam.

[0003]

In the night driving of a car, the visibility is naturally poor, and the burden on the driver is not small, such as road conditions, movements of oncoming vehicles and pedestrians, and work of checking road signs. In particular, every time there is an oncoming vehicle, the operation of switching from the traveling beam to the passing beam to the traveling beam is too complicated, and it is not rare that the switching operation is forgotten or mistaken, and the traveling beam passes by the oncoming vehicle. The present invention has been made in view of the above problems, and has as its object to provide an automobile headlight that does not require switching to a low beam.

[0004]

SUMMARY OF THE INVENTION The present invention has been made as a means for achieving the above-mentioned object, and the invention of claim 1 is directed to an automobile headlamp provided with a beam switching device for switching between a traveling beam and a low beam. In the above, a required area on the upper side of the lens of the headlamp is formed in a ground glass shape,
An automobile headlamp having a configuration in which glare given to an oncoming vehicle at the time of passing by a traveling beam is prevented. A second aspect of the present invention is an automobile headlamp having a configuration in which the entire surface of the lens of the automobile headlamp is formed in a ground glass shape so as to prevent glare from being applied to an oncoming vehicle at the time of a running beam. According to a third aspect of the present invention, there is provided a headlamp for an automobile according to the first or second aspect of the present invention, wherein a surface of the ground glass formed on the lens is subjected to a coating treatment to make the surface smooth. It is. The invention according to claims 4 and 5 is to apply a paint having an anti-glare property to diffuse a beam to a required area on the upper side of the lens of the headlamp, or to attach a film having an anti-glare property, This is an automobile headlamp having a configuration in which anti-glare processing is performed to prevent glare from being imparted to an oncoming vehicle at the time of passing, even during a traveling beam.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a cross-sectional view of a headlamp of an automobile provided with a beam switching device for a traveling beam and a passing beam, wherein reference numeral 1 denotes a lens, and reference numeral 2 denotes a part of a lens formed in a ground glass shape by ground glass processing. Area of the
That is, it is a required area. In the drawing, it is a hatched portion. or,
The solid arrow in the figure indicates that the light source passes through the reflecting mirror 3,
The direction of the traveling beam irradiating the front during normal traveling is indicated, and the dotted arrow indicates the direction of the passing beam when passing the oncoming vehicle. The switching device for switching between the traveling beam and the passing beam is not shown.

The required area of the ground glass 2 formed on the lens 1 is different from the required area of the ground glass even if the vehicle passes the oncoming vehicle while maintaining the traveling beam.
A range that does not give glare to oncoming vehicles. This range is
The specific direction varies depending on the direction of the optical axis of the lamp, the mounting position and angle of the headlamp on the vehicle body, etc. It must be within the range not given.

As shown in FIG. 1, if a predetermined area on the upper side of the lens is ground and ground, a traveling beam passing through this area is diffused. As a result, glare to the oncoming vehicle is prevented. The degree of the ground glass processing may be such that the prevention of glare is such that the safety of the oncoming vehicle can be sufficiently secured. As long as the illumination on the side of the lamp to be processed has sufficient brightness, it is better that the illumination reaches sufficiently far. Also, as described above, the range of the ground glass processing varies depending on the direction of the optical axis of the lamp, the mounting position and the angle of the headlamp on the vehicle body, and the like. For example, a range defined by a substantially horizontal line at about 3/4 or 2/3 from the top.

In FIG. 2, on the surface to be ground glass-processed, fine irregularities are generated on the surface, and if pride, dirt, and the like adhere to the surface, the illuminance of the lamp may be significantly reduced. In order to prevent this, the surface subjected to the ground glass processing may be coated with a coating member 4 made of a transparent material so as to have a smooth and smooth surface in order to prevent fine irregularities on the surface.

In the above embodiment, the process of applying a ground glass process to a part of the lens, that is, an example of the anti-glare process on a required area, has been described. Good. In this case, the headlamp whose entire surface is subjected to ground glass processing can be used, for example, separately from the headlamp originally provided in the vehicle body, for use in arbitrarily mounting it at a desired place of a vehicle. For actual use, leave it to the driver's will.For example, if you use only headlamps with ground glass processing on the entire surface, appropriate lighting can be obtained, and when passing by oncoming vehicles,
There is no need to switch beams.

In the above-described embodiment, the process of applying a ground glass process has been described as an example of the anti-glare process of the lens. However, the present invention is not limited to this. An anti-glare treatment such as applying a paint having an anti-glare property or attaching a film having an anti-glare property may be performed. Even with such a paint or film, glare given to an oncoming vehicle at the time of passing can be prevented.

[0011]

According to the first, second, fourth and fifth aspects of the present invention,
Regardless of the presence or absence of oncoming vehicles, it is possible to travel with the headlamp beam as the traveling beam during normal traveling at night,
There is no need to switch to a passing beam each time the vehicle passes an oncoming vehicle. Therefore, attention can be devoted to that much, and driving safety can be improved. In particular, it is possible to prevent a dazzling accident due to passing while the traveling beam is being given to the oncoming vehicle by forgetting the operation of switching to the passing beam. Further, by mounting the headlamp at an original predetermined position of the vehicle, a switching mechanism for switching between a traveling beam and a passing beam, which is conventionally required, and a switching device for the switching beam can be eliminated. According to the third aspect of the present invention, it is possible to prevent pride, dirt, and the like from adhering to the surface of the ground glass processing, and prevent a decrease in the illuminance of the lamp. According to the fifth aspect of the present invention, the anti-glare processing can be performed relatively easily and at a low cost as compared with the anti-glare processing by the ground glass processing.

[Brief description of the drawings]

FIG. 1 is a sectional view of a headlamp of an automobile.

FIG. 2 is a partially enlarged sectional view of a lens of a headlamp of an automobile.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lens 2 Required area (ground glass area) 3 Reflecting mirror 4 Coating member

Claims (5)

[Claims] In a headlamp of an automobile provided with a beam switching device for a traveling beam and a passing beam, a required area on an upper side of a lens of the headlamp is formed in a frosted glass shape. An automotive headlamp characterized in that glare given to an oncoming vehicle is prevented. 2. A headlamp for an automobile, wherein the entire surface of the lens of the headlamp of the automobile is formed in a ground glass shape to prevent glare from being applied to an oncoming vehicle at the time of a running beam. 3. The automotive headlamp according to claim 1, wherein the surface of the ground glass formed on the lens is subjected to a coating treatment to make the surface smooth. 4. An automotive vehicle characterized by performing an anti-glare treatment for diffusing a beam in a required area on the upper side of a lens of a headlamp so as to prevent glare from being applied to an oncoming vehicle at the time of a running beam. head lamp. 5. An anti-glare treatment for diffusing a beam to a required area on the upper side of a lens of a headlamp is performed by applying a paint having an anti-glare property or attaching a film having an anti-glare property. The headlamp for an automobile according to claim 4, wherein