JPH0973806A - Marker light for vehicles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a general-purpose application for satisfying the specified luminous intensity distribution, regardless of the difference in the form of a body as a mounting object. SOLUTION: Optical axes X1-X1 of fisheye lens steps 26 formed on a lens 3 is inclined in one direction relative to the center axis X-X of a Fresnel lens 26 or the optical axis of the reflecting surface thereof. The illuminance distribution 36 of irradiation beams 35 emitted from the lens 3 is thereby made eccentric in one direction.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a novel vehicle marker light. More specifically, it is intended to provide a new vehicular marker lamp having versatility so that a prescribed light distribution can be satisfied even if the shape of a vehicle body to be mounted is different.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show, as an example of a conventional vehicle marker light, a front end portion and a rear end portion of an automobile for the purpose of indicating intention such as turning to the oncoming vehicle or a succeeding vehicle and changing lanes. It shows a turn signal lamp arranged at.

The turn signal lamp a is a lamp body b
The light source body e is disposed in the lamp chamber d formed by the lens c.

The front surface of the lens c (turn signal lamp a
The irradiation direction of is the front. ) Is formed with a large number of fish-eye lens steps f, f, ... Which are concave toward the front, and a Fresnel lens g is formed on the surface facing the interior of the lamp chamber d. The xx line is the central axis of the Fresnel lens g, and the optical axis (not shown) of the fisheye lens steps f, f, ... Is parallel to the central axis xx of the Fresnel lens g.

The turn signal lamp a is attached to the front end and / or the rear end of the vehicle body h.

Of the light emitted from the light source body e, the light i, i, ... Entered into the lens c is formed on the rear surface of the lens c by the Fresnel lens g, and the central axis x of the Fresnel lens g. -Control in parallel with x.

The lights i, i, ... Made parallel to the central axis xx of the Fresnel lens g as described above travel straight in the lens c and, when emitted from the lens c, are in front of the lens c. The fish-eye lens steps f, f, ...
Is diffused in the vertical and horizontal directions by
The illuminance distribution j as shown by the solid line is formed so as to satisfy the illuminance distribution k defined by the standard.

Depending on the shape of the vehicle body h, the posture of the turn signal lamp a when attached to the vehicle body h may be tilted with respect to the vehicle body h, and in such a case, the lens c of the turn signal lamp a is usually used. However, if the inclination of the turn signal lamp a with respect to the vehicle body h is smaller than θ, the illuminance distribution j can satisfy the standard illuminance distribution k as shown by the two-dot chain line in FIG. It is not necessary to change the lens c.

The illuminance distribution j of the turn signal lamp a is irradiated so that it can be tilted inward and outward with respect to the vehicle body h by the same amount.

[0010]

However, since the conventional turn signal lamp a is not tilted inward with respect to the vehicle body h, the illuminance distribution j of the turn signal lamp a is relative to the vehicle body h. It does not have to be equally tilted both inside and outside.

Since the turn signal lamp a has a large amount of unnecessary irradiation, the portion 1 of the illuminance distribution j (indicated by a satin in FIG. 8) necessary for tilting the turn signal lamp a is small. Then, since the value of the portion 1 required for tilting the turn signal lamp a outward becomes small, the illuminance distribution j tends not to satisfy the standard illuminance distribution k when the shape of the vehicle body h is changed, Turn signal lamp a
It was easy to need to change the lens c.

[0012]

The vehicle marker light of the present invention comprises:
In order to solve the above problems, the illuminance distribution of the irradiation light emitted from the lens by tilting the optical axis of the fisheye lens step formed in the lens in one direction with respect to the central axis of the Fresnel lens or the optical axis of the reflecting surface. Is biased in one direction.

Therefore, according to the vehicular marker lamp of the present invention, it is possible to reduce the irradiation to unnecessary parts and increase the irradiation to necessary parts, thereby providing the turn signal lamp to the vehicle body. Since it is possible to increase the range that can satisfy the standard illuminance distribution when tilted, it is often unnecessary to change the lens even when the turn signal lamp is tilted and attached to the vehicle body. .

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the vehicular marker lamp of the present invention will be described below with reference to the accompanying drawings.

The present invention provides a lens in which a large number of fisheye lens steps are formed on the front surface and a Fresnel lens is formed on the rear surface,
The lamp chamber is formed by attaching the lamp chamber to the front surface of the lamp body, and the light source body having the light emitting portion is attached to the lamp chamber.

By tilting the optical axis of the fisheye lens step formed on the front surface of the lens in one direction in the horizontal direction with respect to the central axis of the Fresnel lens,
The illuminance distribution of the irradiation light emitted from the lens is biased in one direction in the horizontal direction.

Further, the fish-eye lens step formed on the lens is a fish-eye lens step that is concave toward the front, so that the light does not cross in front of the lens after the light is emitted from the lens. This is to prevent unevenness.

Further, according to the present invention, a front surface portion of a lamp body having a reflecting surface formed by subjecting a lens having a large number of fish-eye lens steps concave in a forward direction to a reflecting surface of a paraboloid of revolution. The lamp chamber is formed by attaching the light source body having the light emitting portion so that the light emitting portion coincides with the focal position of the reflecting surface.

By tilting the optical axis of the fisheye lens step formed on the front surface of the lens in one direction in the horizontal direction with respect to the optical axis of the reflecting surface, the illuminance distribution of the irradiation light emitted from the lens is This is biased in one direction in the horizontal direction.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 7 show an example of implementation of a vehicular marker light according to the present invention, which is used to convey an intention to turn left or right or change lanes to oncoming vehicles or following vehicles. 3 shows a turn signal lamp arranged in the front part or the rear part.

Reference numeral 1 is a turn signal lamp, and the turn signal lamp 1 is one in which a light bulb 5 is arranged in a lamp chamber 4 formed by covering a front opening of a lamp body 2 with a lens 3.

The front surface of the lamp body 2 (the upward direction in FIG. 1 is the upward direction, the downward direction is the downward direction, the leftward direction is the left side, the rightward direction is the right side, and the leftward direction in FIG. To the front,
The direction toward the right is backward. ) Has a container-like main portion 6, an installation groove 7 formed at the front opening edge of the main portion 6 and opening toward the front, and a connector formed substantially at the center of the rear wall of the main portion 6. And a socket 8.

Among the wall portions that limit the outside of the installation groove 7, the wall portion located on the right side is formed with rectangular engaging holes 9, 9 which are vertically spaced apart from each other.

A hooking piece 10 projecting laterally is formed at a position closer to the upper side of the right side wall of the lamp body 2 in the vertical direction and corresponding to the rear end of the installation groove 7. Also, a semi-cylindrical co-tightening portion 11 that extends in the front-rear direction and has a front end opened and a rear end closed at a location substantially in the center of the left side wall in the up-down direction and facing the portion where the installation groove 7 is formed. Is formed, and the co-fastening hole 1 is formed in the rear end wall of the co-fastening portion 11.
2 is formed.

The socket 8 with a connector formed on the lamp body 2 has a socket portion 13 protruding into the lamp chamber 4 and a connector portion 14 protruding rearward from the rear end portion of the lamp body 2. There is.

Inside the socket 8 with a connector, contact pieces 15, 15 are supported by means such as insert molding. One of the contact pieces 15, 15 is inside a light bulb attachment hole 16 formed in the socket portion 13. And the other of the contact pieces 15, 15 projects into the fitting hole 17 formed in the connector portion 14.

The lens 3 is a main portion 18 having a substantially rectangular plate shape.
And a mounting piece 19 projecting rearward from a position near the periphery of the rear surface of the main portion 18, and a rearward direction from a substantially center in the vertical direction at a position near the left side of the rear surface of the main portion 18. And a protruding boss portion 20, and an insertion hole 21 penetrating in the axial direction is formed in the boss portion 20.

On the outer surface of the right side wall of the installation piece 19, engagement claws 22 are provided so as to be spaced apart in the vertical direction.

A Fresnel lens 23 is formed on the rear surface of the main portion 18 of the lens 3, and the Fresnel lens 23 has a central axis X.
It has refraction system prism steps 24, 24, ... Formed in the central portion centered on −X, and reflection system prism steps 25, 25 ,.

On the front surface of the lens 3, a large number of fisheye lens steps 26, 26, ... Which are concave toward the front are formed, and the fisheye lens steps 26, 26 ,.
The optical axis X1-X1 of is the central axis X- of the Fresnel lens 23.
It is formed so as to incline toward the side on which the boss portion 20 is formed with respect to X.

The light bulb 5 is of a general wedge base type, in which a filament 27 is arranged inside, and a base portion 28 is formed by pinching the rear end portion. The connection terminals 29, 29 (only one of which is shown in the figure) are projected from the rear end of the base portion 28 and are folded back along the side surface of the base portion 28.

Of the light emitted from the filament 27 of the light bulb 5, the light incident on the refraction prism steps 24, 24, ... Of the Fresnel lens 23 is the refraction prism steps 24, 24 ,. Light 3 which is refracted by the light and is parallel to the central axis XX of the Fresnel lens 23.
0, 30, ..., Fisheye lens steps 26, 2 formed on the front surface of the lens 3 after passing through the lens 3.
.. are diffused in the vertical direction and the horizontal direction and emitted.

Of the light emitted from the filament 27 of the light bulb 5, the light incident on the reflecting prism steps 25, 25, ... Of the Fresnel lens 23 is the reflecting prism steps 25, 25 ,. Is once refracted by and then reflected and then the central axis X of the Fresnel lens 23.
Is converted into light parallel to X, passes through the lens 3, and is diffused in the vertical and horizontal directions by the fisheye lens steps 26, 26 formed on the front surface of the lens 3 and emitted. To be done.

By inserting the base portion 28 of the light bulb 5 into the light bulb attachment hole 16 of the socket portion 13 of the socket 8 with a connector formed at the rear end portion of the main portion 6 of the lamp body 2, the light bulb 5 is inserted. The connection terminals 29, 29 protruding from the base portion 28 of No. 5 are connected to the contact pieces 15, 15 arranged in the light bulb attachment hole 16 of the socket portion 13.

Then, the installation piece 19 of the lens 3 is fitted into the installation groove 7 of the lamp body 2 from the front. At this time, the inclined surfaces 22a, 22a of the engaging claws 22, 22 formed on the installation piece 19 of the lens 3 come into contact with the right opening edge of the installation groove 7 of the lamp body 2 from the front, so that the installation of the lens 3 is completed. The piece 19 is bent inward.

When the lens 3 is further moved rearward, the lens 3 is moved to a position where the engaging claws 22 formed on the lens 3 and the engaging holes 9 formed on the lamp body 2 are aligned with each other.
The bending of the mounting piece 19 of the lens returns to its original state, and the engaging claw 2 of the lens 3
2, 22 are engaged with the engaging holes 9, 9 of the lamp body 2.

The hooking piece 32 of the lamp body 2 is formed on the outside of the vehicle body 31 (the right side in FIG. 3 is the outside of the vehicle body 31, and the left side is the inside of the vehicle body 31). So that the position of the insertion hole 21 of the boss portion 20, the position of the co-fastening hole 12 of the co-fastening portion 11 and the position of the screw groove forming hole 33 formed inside the vehicle body 31 are aligned in the front-rear direction. The tapping screw 34 to the boss 2
After being inserted into the insertion hole 21 of 0 and the co-tightening hole 12 of the co-tightening portion 11, they are screwed into the screw groove forming hole 33 while being screwed,
The turn signal lamp 1 is assembled to the vehicle body 31 at the same time as the turn signal lamp 1 is assembled by tightening the boss portion 20, the joint portion 11 and the screw groove forming hole 33 together.

The optical axes X1-X1 of the fish-eye lens steps 26, 26, ... Formed on the front surface of the lens 3.
Are inclined toward the side where the boss portion 20 is formed with respect to the central axis XX of the Fresnel lens 23, so that the irradiation light 35, 35 ,.
The illumination distribution 36 of .. is biased toward the inside of the vehicle body 31 (the left side is the outside of the vehicle body and the right side is the inside of the vehicle body in FIG. 6) with respect to the standard illumination distribution 37.

Therefore, when the mounting posture of the turn signal lamp 1 is changed outward with respect to the vehicle body 31 by changing the shape of the vehicle body 31, the illuminance distribution 36 of the turn signal lamp 1 is the standard illuminance. It is possible to increase the range θ1 in which the distribution 37 can be satisfied (the range in which the distance between the position of the solid line and the position of the two-dot chain line in the illuminance distribution 36 in FIG. 6 can satisfy the standard illuminance distribution 37). it can.

Therefore, even when the mounting posture of the turn signal lamp 1 is changed outward with respect to the vehicle body 32 by changing the shape of the vehicle body 31, the lens 3 need not be changed. It will be more frequent and versatile.

Further, the irradiation light 3 emitted from the lens 3
.. may intersect in front of the lens 3 to cause light unevenness, but the fish-eye lens steps 26, 26, ... Formed on the lens 3 have a fish-eye lens step 26 concave toward the front. , 26, ... are used, the irradiation light 35, 3 emitted from the lens 3 is used.
.. are diffused in front of the lens 3 without intersecting with each other, it is possible to suppress the occurrence of light unevenness.

In the above embodiments, the Fresnel lens 23 is formed on the rear surface of the lens 3, but the inner lens is provided in the lamp chamber 4, and the Fresnel lens 23 is provided on the inner lens. Therefore, the direct light from the filament 27 may be controlled.

In the above embodiment, the Fresnel lens 23 is provided on the rear surface of the lens 3 so that the light emitted from the filament 27 is converted into the light parallel to the central axis XX of the Fresnel lens 23. Fish-eye lens steps 26, 26 formed on the front surface of the lens 3 to pass
It was diffused up and down and left and right due to ...
Instead of the Fresnel lens 23, a reflecting surface formed by subjecting a paraboloid of revolution to a reflecting process may be used. That is,
A reflecting surface and a light bulb in which the position of the filament is aligned with the focal point of the reflecting surface are arranged in the lamp chamber, and the light radiated from the filament is reflected by the reflecting surface so as to be parallel to the optical axis of the reflecting surface. The same effect can be obtained by making the light enter the lens and diffusing the light into the vertical direction and the horizontal direction by the fisheye lens step formed on the front surface of the lens to emit the light.

[0044]

As is apparent from the above description, the vehicular marker lamp of the present invention forms the lamp chamber by disposing the lens on the front surface of the lamp body, and has the light emitting portion in the lamp chamber. A light source and a Fresnel lens or a reflecting surface are arranged, and the Fresnel lens or the reflecting surface controls the light emitted from the light-emitting portion parallel to the central axis of the Fresnel lens or the optical axis of the reflecting surface while the light passes through the lens. Let it be light,
A marker light for a vehicle, which emits the control light diffused by a large number of fisheye lens steps formed on the front surface of the lens when the control light is emitted from the lens, wherein the optical axis of the fisheye lens step formed on the lens is the central axis of the Fresnel lens. Alternatively, the illuminance distribution of the irradiation light emitted from the lens is biased in one direction by inclining in one direction with respect to the optical axis of the reflecting surface.

Therefore, according to the vehicular marker lamp of the present invention, it is possible to reduce the irradiation to unnecessary portions and increase the irradiation to necessary portions, thereby providing the turn signal lamp to the vehicle body. Since it is possible to increase the range that can satisfy the standard illuminance distribution when tilted, it is often unnecessary to change the lens even when the turn signal lamp is tilted and attached to the vehicle body. .

It should be noted that the specific shapes and structures shown in the above embodiments are merely examples of the implementation in carrying out the present invention, and the technical scope of the present invention is limited by these. Should not be interpreted as.

[Brief description of drawings]

1 shows an example of an embodiment of a vehicular marker lamp of the present invention, together with FIGS. 2 to 7, and is a front view.

FIG. 2 is a right side view.

3 is a sectional view taken along the line III-III in FIG.

4 is a cross-sectional view taken along the line IV-IV in FIG.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a conceptual diagram showing an illuminance distribution.

FIG. 7 is a conceptual diagram showing a diffusion state of light by a lens.

8 shows an example of a conventional vehicular marker lamp together with FIG. 9, and this figure is a conceptual diagram showing an illuminance distribution.

FIG. 9 is a conceptual diagram showing a diffusion state of light by a lens.

[Explanation of symbols]

 1 Turn Signal Lamp (Vehicle Marking Light) 2 Lamp Body 3 Lens 4 Lamp Room 5 Light Bulb (Light Source) 23 Fresnel Lens X-X Fresnel Lens Center Axis 26 Fisheye Lens Step X1-X1 Fisheye Lens Step Optical Axis 27 Filament (Light Emission) Part) 30 light (control light) 35 irradiation light 36 illuminance distribution

Claims (2)

[Claims] 1. A lamp chamber is formed by arranging a lens on a front surface of a lamp body, and a light source body having a light emitting portion and a Fresnel lens or a reflecting surface are arranged in the lamp chamber, and by the Fresnel lens or the reflecting surface. While the light from the light emitting portion is passing through the lens, the control light is made parallel to the central axis of the Fresnel lens or the optical axis of the reflecting surface, and the front surface of the lens is emitted when the control light is emitted from the lens. A marker light for a vehicle that diffuses and emits light by a large number of fish-eye lens steps formed on the lens, wherein the optical axis of the fish-eye lens step formed on the lens is in one direction relative to the central axis of the Fresnel lens or the optical axis of the reflecting surface A vehicular beacon lamp characterized in that the illuminance distribution of the irradiation light emitted from the lens is biased in one direction by tilting. 2. The vehicular marker lamp according to claim 1, wherein the plurality of fisheye lens steps formed on the lens are fisheye lens steps that are concave toward the front.