JP2500139Y2 - Automotive lighting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lamp whose optical axis can be adjusted.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a finisher 3 for improving the appearance is provided between a lens 1 and a reflector 2, and the reflector 2 is screwed into a nut 4 fixed thereto and a housing 5 is provided. The vertical optical axis adjusting screw rod (not shown) rotatably inserted and supported in the supporting hole 6 of the rear surface wall 5a and the left and right optical axis adjusting screw rods 7 are tilted up and down and left and right by the forward and reverse rotation operations. Vehicle lamps adapted for adjustment are known.

The reflector 2 has a tilt fulcrum 8
The fulcrum receiving portion 9 of the housing 5 for receiving the support 5, the upper and lower optical axis adjusting screw rods, and the left and right optical axis adjusting screw rods 7 are supported and disposed in the housing 5.

[0004]

In such a conventional vehicle lamp, any one of the vertical optical axis adjusting screw rod and the left and right optical axis adjusting screw rod 7 which support the reflector 2 via the nut 4 is used. However, since the substantially middle portion 7a is inserted and supported in the support hole 6 of the rear wall 5a of the housing 5 and the tip portion 7b is not supported anywhere, the reflector 2 swings greatly in the housing 5. For this reason, the optical axis shake easily occurs, and the upper and lower optical axis adjusting screw rods and the left and right optical axis adjusting screw rods 7
Is easily damaged. Further, if both the upper and lower optical axis adjusting screw rods 7 and the left and right optical axis adjusting screw rods 7 rotate too much in one direction, the nut 4 will come off and the optical axis adjustment cannot be performed.

The present invention has been made in view of the above circumstances, in which the optical axis is not shaken by the swinging of the reflector, the holding portion of the optical axis adjusting screw rod is not damaged, and the optical axis adjusting screw is An object of the present invention is to provide a vehicle lighting device in which a nut does not come off from a rod.

[0006]

In order to achieve the above object, an automotive lamp of the present invention comprises a finisher between a lens and a reflector, and the reflector is screwed to a nut fixed to the finisher. The optical axis is adjusted by tilting up and down and left and right by the forward and reverse rotation operations of the vertical optical axis adjustment screw rod and the left and right optical axis adjustment screw rod that are rotatably inserted and supported in the support holes of the rear wall of the housing. In the automotive lamp, the tip ends of the both optical axis adjusting screw rods are rotatably supported in the fitting holes of the finisher.

[0007]

In the both optical axis adjusting screw rods, the middle portion is supported in the supporting hole of the rear wall of the housing, and the tip portion is supported in the fitting hole of the finisher between the lens and the reflector. It does not shake inside, the holding parts of both optical axis adjusting screw rods are not damaged, and the nut does not come off from both optical axis adjusting screw rods.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a front view of a vehicle lamp according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. Then, the lens 21 is mounted in a liquid-tight manner in the front opening. Inside the housing 20, a reflector 22 that reflects the light of an unillustrated light bulb forward is mounted. The reflector 22 is supported by a fulcrum receiving portion 24 of the housing 20 so as to be vertically and horizontally tiltable around a tilt fulcrum 23.

A pair of nuts (only one is shown) 25 are fixed to predetermined portions of the reflector 22. A vertical optical axis adjusting screw rod 26 and a left and right optical axis adjusting screw rod 27 are screwed into these nuts 25. Both optical axis adjustment screw rod 2
Substantially intermediate portions 26a, 27a of 6, 27 are rotatably inserted and supported in the support holes 28 of the rear wall 20a of the housing 20. In addition, the base end portion 26 of the two optical axis adjusting screw rods 26, 27
b and 27b extend rearward from the rear wall 20a of the housing 20. Further, the tip ends 26c and 27c of the two optical axis adjusting screw rods 26 and 27 are rotatably supported via a short-axis cylindrical packing 31 of a fitting hole 30 of the finisher 29.

The finisher 29 is arranged between the lens 21 and the reflector 22 to improve the appearance, and is fixed to the housing 20 with screws 32.

Next, the operation will be described.

Conventionally, the optical axis is adjusted up and down and left and right by tilting the reflector 22 up and down and left and right around the tilt fulcrum 23 by rotating the both optical axis adjusting screw rods 26 and 27 forward and backward. Is the same as.

In the present invention, both optical axis adjusting screw rods 2
Substantially intermediate portions 26a, 27a of 6, 27 are provided in the support hole 28 of the rear wall 20a of the housing 20, and tip portions 26c, 27c.
Are rotatably supported in the fitting holes 30 of the finisher 29 arranged between the lens 21 and the reflector 22, so that the support of the reflector 22 is stable.
The reflector 22 does not shake within the housing 20, the holding portions of the two optical axis adjusting screw rods 26 and 27 are prevented from being damaged, and the optical axis adjusting screw rods 26 and 27 are prevented from coming into contact with the nut 25.
Since it cannot be removed, the optical axis adjustment will not be disabled.

FIG. 3 shows a second embodiment in which the present invention is applied to an automobile lamp having a reflector 22 'of a projector unit.
2 is the same as FIG. 2 showing an example. In this embodiment, the tilt fulcrum 23 is provided on the housing 20, and the fulcrum receiving portion 24 is provided on the reflector 22 '. Since the other configurations and operations are the same as those in the above-described first embodiment, the same parts in the drawings are designated by the same reference numerals and the description thereof will be omitted.

Further, in each of the above-described embodiments, a short-axis cylindrical packing 31 is interposed between the tip end portions 26c and 27c of the two optical axis adjusting screw rods 26 and 27 and the fitting hole 30 of the finisher 29. Although not limited thereto, FIG.
As shown in Fig. 2, the tip portion 26 of the two optical axis adjusting screw rods 26, 27
An O-ring may be interposed between the c and 27c and the fitting hole 30 of the finisher 29.

[0017]

As described above, according to the vehicle lamp of the present invention, since the optical axis shake does not occur due to the reflector swaying, it is possible to always irradiate the appropriate light, and the holding portions of both optical axis adjusting screw rods are damaged. Moreover, since the nut cannot be removed from the both optical axis adjusting screw rods, there is an effect that the optical axis cannot be adjusted.

[Brief description of drawings]

FIG. 1 is a front view of a vehicle lighting device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view of an automotive lamp according to a second embodiment of the present invention.
FIG.

FIG. 4 is a sectional view of an essential part of an automotive lamp according to a third embodiment of the present invention.

FIG. 5 is a view similar to FIG. 2 of a conventional automotive lamp.

[Explanation of symbols]

 20 Housing 20a Rear wall 21 Lens 22 Reflector 22 'Reflector 25 Nut 26 Vertical optical axis adjusting screw rod 26a Tip part 27 Left and right optical axis adjusting screw rod 27a Tip part 28 Support hole 29 Finisher

Claims (1)

(57) [Scope of utility model registration request] 1. A vertical optical axis adjusting screw having a finisher between a lens and a reflector, the reflector being screwed into a nut fixed to the finisher and being rotatably inserted and supported in a supporting hole of a rear wall of the housing. In a vehicle lamp in which the optical axis is adjusted by tilting the rod and the left and right optical axis adjusting screw rods in the forward and reverse directions by rotating the rod in the forward and reverse directions, the tip ends of the both optical axis adjusting screw rods are attached to the finisher. An automotive lamp, which is rotatably supported in a fitting hole.