JPH0536753Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a fender marker that is attached to the fender part of a car body and used to clearly indicate the width of the vehicle in front of the car body and improve its visibility. ,
In particular, the present invention relates to a fender marker in which the amount of light emitted from fender markers disposed on the left and right sides is adjusted so that the visible luminous intensity from the driver's seat is approximately uniform on the left and right sides.

[Conventional technology]

BACKGROUND ART Fender markers have been widely used in the past to be placed on the fender section of a vehicle body to clearly indicate the width of the vehicle in front of the vehicle body and to improve visibility from the driver's seat. Most of these fender markers are self-luminous in order to ensure visibility at night.In particular, fender markers that are designed to save resources and labor use the light emitted from vehicle lamps through optical fibers. It is structured so that it is guided to the light emitting part and turned on at the same time as the vehicle lamp is turned on.

[The problem that the idea aims to solve]

However, in the conventional self-luminous fender markers mentioned above, the left and right vehicle lights that serve as light sources are configured to have equal luminous intensity on the left and right sides in accordance with legal regulations such as vehicle operation standards, and therefore, it is necessary to The amount of light emitted from the fender markers connected is also equal on the left and right sides.

However, as shown in FIG. 6, the visible position for the fender marker is mainly the driver's seat 50a of the vehicle 50, and the visible luminous intensity of the left and right fender markers 51L, 51R from the driver's seat 50a is the same as that of the fender marker 51L. , 51R depending on the viewing angle θ ₁ or θ ₂ with respect to the emitted optical axis (θ ₁ > _{θ 2} ). Fender marker 51R placed on the _2nd side)
The luminous intensity of the left and right fender markers 51L, 51R is visually recognized as uneven.

In order to solve such problems and obtain uniform visual luminous intensity from the driver's seat 50a, it is necessary to use high-diffusion lenses as the lenses included in the light emitting parts of the fender markers 51L and 51R. However, if you use a high diffusion lens, the Fender Marker 51L,
Since the luminous intensity as 51R is lowered as a whole, it has the disadvantage that visibility becomes worse.

This invention was devised in view of the above problems, and it changes or adjusts the components, installation positions, and shapes of the left and right fender markers to make the visible light intensity from the driver's seat approximately uniform, and also reduces the visibility by reducing the light intensity. The object of the present invention is to provide a fender marker that does not deteriorate in quality.

[Means to solve the problem]

In order to achieve the above object, the fender marker according to the present invention is arranged on the left and right fender parts of the vehicle body, and guides the irradiation light emitted from the light source of the vehicle lamp to the respective light emitting parts via optical fibers. In the fender marker configured to do this, the gist is that the amount of light emitted from the left and right fender markers is adjusted to make the visible luminous intensity from the driver's seat substantially equal.

As a specific means for adjusting the amount of emitted light, the distance between the light condensing member placed in the lighting section of the optical fiber connected to the left and right fender markers and the light source of the vehicle lamp is changed, and the distance between the light source of the vehicle lamp and the It is possible to adjust the amount of incident light so that the visible luminous intensity from the driver's seat is approximately equal on the left and right sides.

Furthermore, the light transmittance of the lenses included in the light emitting parts of the left and right fender covers can also be changed.

[Effect]

According to the above configuration, the amount of light incident on the fender marker placed on the far side from the driver's seat can be configured to be smaller than the amount of incident light on the fender marker placed on the side closer to the driver's seat, so the amount of light emitted from both can be reduced. By mutually adjusting the amount of light, the visible light intensity from the driver's seat can be made uniform.

〔Example〕

Hereinafter, preferred embodiments of the fender marker according to the present invention will be described with reference to the drawings.

1 to 4 show a first embodiment of the fender marker according to the present invention. Reference numeral 1 indicates a fender marker molded from a transparent synthetic resin material, etc., and it can be used as a fender marker of a vehicle as appropriate. An optical fiber 3 that is fixedly installed in the vehicle lamp 2 and connected to the vehicle lamp 2 such as a headlight or a side marker lamp collects the irradiated light L of the vehicle lamp 2 and guides the light into the fender marker 1. The light is emitted from the light emitting portion 1a toward the driver's seat side of the vehicle.

In this embodiment, the illumination light L of the light source 5 carried in the lamp chamber 4 of the vehicle lamp 2 is focused on the lighting part 3a of the optical fiber 3 that looks into the lamp chamber 4 of the vehicle lamp 2, and the light is A double-sided Fresnel lens 6 having Fresnel steps formed on both the front and back surfaces is arranged as a light condensing member for efficiently receiving light into the light collecting part 3a of the fiber 3.

Generally, the angle Θ ₀ of the incident light on the optical fiber 3 at the lighting section 3a and the outgoing light at the light emitting section is as follows:
As shown in FIG. 3, a core 3b (refractive index n ₂ ) and a cladding 3c (refractive index
Θ ₀ = 2 _sin ^-1 (√ ₁ ² − ₂ ^{2 )} , depending on the material of the optical fiber 3 _. 3a, no light is received.

Therefore, the core 3 constituting the optical fiber 3
It is desirable to appropriately select materials b and 3c for the cladding 3c, and to set the incident angle Θ ₁ of the optical fiber 3 to the light-collecting portion 3 a via the double-sided Fresnel lens 6 so that it falls within the above Θ ₀ .

Thus, the double-sided Fresnel lens 6 according to this embodiment
The focal point F1 and F2 positions are designed so that the incident angle Θ ₁ of the optical fiber 3 with respect to the light receiving part 3 a satisfies Θ ₀ ≧ Θ ₁ , and the light receiving part 3 a of the optical fiber 3 and the light source The distances f1 and f2 with respect to 5 are the focal points F1 and
Determined by F2.

In the present invention, in order to adjust the amount of light incident on the left and right fender markers 1 using the double-sided Fresnel lens 6 having the above configuration, a fourth lens is used.
As shown in the figure, one fender marker 1,
That is, fender marker 1 is on the right side when viewed from the driver's seat.
The installation interval f2R between the double-sided Fresnel lens 6 and the light source 5 on the R side is longer than that on the other side, that is, on the left fender marker 1L side (f2R>f2
L), and the structure may be such that the incident light L of the double-sided Fresnel lens 6 is partially (hatched) diffused to the outside of the light-collecting part 3a of the optical fiber 3 (Fig. 4b).
reference). In the latter case, since the amount of light incident on the light-collecting portion 3a of the optical fiber 3 is reduced, the amount of light emitted from the fender marker 1R is correspondingly smaller than that from the other fender marker 1L.

FIG. 5 shows a second embodiment of the fender marker according to the present invention, and parts different from the first embodiment described above will be explained.

That is, in this embodiment, instead of the above-mentioned double-sided Fresnel lens 6, a reflecting mirror 16 is configured as a light condensing member. Even in this case, by changing the installation distance between the reflecting mirror 16 and the light source 5, the amount of light incident on the lighting section 3a of the optical fiber 3 can be adjusted. The amount of light can be reduced, so the left and right fender markers 1R,
Equalize the visible light intensity for 1L.

The amount of light emitted from the light emitting portions 1a of the fender markers 1L, 1R can be adjusted by changing the light transmittance of lenses (not shown) that constitute the light emitting portions 1a of the fender markers 1L, 1R. By adjusting the amount of light emitted from the markers 1L and 1R, it is possible to achieve the same effects as in the first and second embodiments.

[Effect of idea]

Since the fender marker according to the present invention is constructed as described above, the amount of light incident on the light-collecting part of the optical fiber that collects the irradiated light from the light source of the vehicle lamp is adjusted between the left and right fender markers, and one side By making the amount of light emitted from the left and right fender markers smaller than the amount of light from the other, it is possible to equalize the visible light intensity when both the left and right fender markers are viewed from the driver's seat, and to improve the visibility of the left and right fender markers. , the practical effect after implementation of the present invention is excellent.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of the fender marker according to the present invention, FIG. 2 is a schematic diagram showing the structure of the condensing member, and FIG. 3 is an explanatory diagram showing the incidence rate with respect to the optical fiber. FIG. 4 is an explanatory diagram showing the difference in the incidence rate to the optical fiber,
Fig. 5 is a sectional view showing a second embodiment of the fender marker according to the present invention, and Fig. 6 shows the inclination of the left and right fender markers attached to the fender part of the vehicle in the direction of line of sight from the driver's seat with respect to the output optical axis. It is an explanatory diagram. 1... Fender marker, 1a... Light emitting part,
2...Vehicle lamp, 3...Optical fiber, 3a...
...Lighting section, 5...Light source, 6...Double-sided Fresnel lens.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The fender part is arranged on the left and right parts of the vehicle body and configured to guide the irradiation light emitted from the light source of the vehicle lamp through an optical fiber to each light emitting part. A fender marker characterized in that the amount of light emitted from the left and right fender markers is mutually adjusted to make the visible luminosity from the driver's seat substantially uniform. (2) The distance between the light source of the vehicle lamp and the light condensing member placed in the lighting section of the optical fiber connected to the left and right fender markers, respectively, is changed to adjust the amount of light incident on the lighting section of the optical fiber. The fender marker according to claim 1. (3) The fender marker according to claim 1, characterized in that the light transmittance of lenses configured in the light emitting portions of the left and right fender markers is changed to adjust the amount of light emitted from the lenses.