JP2001010403A - Automotive headlamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add functions to the rearward extension of an outer lens in an automotive headlamp with an outer lens having the same planar shape as a hood. SOLUTION: An outer lens extension 3a which is extended rearwardly from a lens opening 8c in a lamp housing 8 into the same planar shape as a hood is formed with an exhalation port 10 which exhausts air taken in from an intake port 8a, so that the outer lens extension 3a has respiratory functions. An air duct 11 is formed between the exhalation port and an exhalation opening 8b formed in the lamp housing 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an outer lens,
Adjacent to both sides of the front of the hood in front of the windshield, the hood is formed in the same plane as the hood, and the air taken in from the air inlet formed in the lamp housing circulates inside and is exhausted. The present invention relates to an automobile headlamp.

[0002]

2. Description of the Related Art A headlamp is provided with a breathing opening to absorb expansion and contraction of air due to a temperature difference inside the headlamp.
Although it is possible to remove the fogging of the lens, it is usually provided above and below the housing. On the other hand, a headlamp which is disposed at a fender position at a front portion of a vehicle and has an outer lens flush with a hood is well known.

[0003]

SUMMARY OF THE INVENTION The present invention focuses on the existence of such an outer lens coplanar with the hood, and provides a breathing function in the rearward extension of the vehicle. An object of the present invention is to provide a headlamp.

[0004]

According to the present invention, there is provided, according to the present invention, an outer lens mounted on a front lens opening of a lamp housing for accommodating a bulb and a reflector behind the bulb. However, it is formed adjacent to both sides of the hood in front of the windshield and is flush with the hood, and the air taken in from the air inlet formed in the lamp housing circulates inside and is exhausted. In a headlamp of an automobile, an exhalation port for exhausting air sucked from an intake port is formed in an outer lens extension that extends coplanar with a hood behind a lens opening of a lamp housing. A ventilation duct is formed between the mouth and the exhalation opening formed in the lamp housing.

[0005] The air taken in from the intake port is exhausted through the ventilation duct from the exhalation port of the outer lens extension on the same plane as the hood. According to the second aspect of the present invention, a drain port provided with a valve for opening water when water accumulates is provided at an intermediate portion of the ventilation duct from the expiration port to the expiration opening for draining water that has entered from the expiration port.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A headlamp for an automobile according to an embodiment of the present invention will be described with reference to FIGS.
2 is disposed adjacent to both sides of the front of the hood 1 in front of the windshield in a region of the fender 1a above the bumper 9,
The headlamp has an outer lens 3 flush with the hood 1. The outer lens 3 is attached to a lens opening 8c at the front of a lamp housing 8 having a socket 6 for mounting a bulb 5 provided on a reflector 4 at the back toward the front horizontally. This lamp housing is attached to the fender 1a, and has an intake port 8a formed at the bottom on the back surface thereof.

A lamp housing 8 is provided on the outer lens 3.
An outer lens extension 3a is formed to extend rearward from the position of the opening 8c in the same plane as the hood 1.
As shown in FIG. 3, for example, four exhalation openings 10 are formed along the curved rear end edge of the outer lens extension. On both sides and a rear end of the outer lens extension 3a, an inwardly bent peripheral surface is formed.

An exhalation opening 8b is formed in the upper portion of the rear surface of the lamp housing 8. A ventilation duct 11 is formed in a region behind the lamp housing 8 to communicate between the opening 8b and the exhalation opening 10. As shown in FIG. 2, the ventilation duct has a pipe portion 11 joined to the exhalation opening 8b and projecting slightly downward toward the rear.
a, four pipe sections 10a integrally formed with a slight downward gradient from the expiration port 10 toward the rear, and a wide intermediate duct section 11c that communicates with the pipe section 11a and extends upward. A branch duct portion 11b that branches from the duct portion and extends upward to communicate with the pipe portion 10a.
And a drain duct 11d branching downward from the rear end of the pipe 11a.

The drain duct descends directly below the intermediate duct 11c, and a drain 12 at the lower end thereof is integrally formed with a valve 12 which opens when water accumulates via an integral hinge 12a. I have.

[0010] The headlamp thus configured has a novel design by forming the exhalation opening 10 at the rear end portion of the outer lens 3 at the rear end portion of the light emitting portion formed by the lens opening 8c. The air taken in from the intake port 8a is
The breathing opening 8 circulates upward in the headlamp.
The air is exhausted from the exhalation opening 10 through the ventilation duct 11 from b. Since an airflow is generated in the outer lens 3 along the same upwardly curved surface as the hood 1, a negative pressure is generated in the expiration port 10 and smooth discharge is performed. When rainwater or car wash water enters from the expiration port 10, it is guided from the intermediate duct section 11c to the drain pipe section 11d immediately below without entering the inclined pipe section 11a, and a predetermined amount of water accumulates in the drain port 12b. Then, the valve 12 is opened downward and drained.

The exhalation opening formed in the outer lens is
It can be formed into one shape in the middle position in the vehicle width direction or a plurality of shapes other than four in various shapes in consideration of designability, water permeability, airflow and the like.

[0012]

According to the first aspect of the present invention, a headlamp of a novel design having an exhalation opening on the outer lens flush with the hood is realized. Smooth exhalation is performed by the air current generated along the curved surface of the outer lens. According to the invention of claim 2, even if water invades from the exhalation opening, it becomes possible to automatically drain water.

[Brief description of the drawings]

FIG. 1 is a sectional view of a headlamp according to an embodiment of the present invention.

FIG. 2 is a rear view of a main part of the headlamp.

FIG. 3 is a perspective view of an automobile provided with the headlamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hood 1a Fender 2 Headlamp 3 Outer lens 3a Outer lens extension 8 Housing 8a Inlet 8b Expiration opening 10 Expiration port 11 Ventilation duct 12 Valve

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) // F21W 101: 10

Claims (2)

[Claims] An outer lens attached to a front lens opening of a lamp housing for housing a bulb and a reflector behind the bulb is formed flush with and adjacent to both sides of a hood in front of a windshield. Along with
In a car headlamp, the air sucked from the air inlet formed in the lamp housing circulates inside and is exhausted, extending in the same plane as the hood behind the lens opening in the lamp housing In addition to forming an exhalation port for exhausting air taken in from an intake port on the extended outer lens, a ventilation duct is formed between the exhalation port and an exhalation opening formed in the lamp housing. Car headlamp. 2. A headlamp for an automobile according to claim 1, wherein a drain port provided with a valve that opens when water accumulates is formed in a part of the ventilation duct from the exhalation opening to the exhalation opening. .