JP6956605B2 - Automotive fog lights - Google Patents

Description

The present invention relates to an automobile fog lamp, and more particularly to an automobile fog lamp capable of emitting light of different colors (white light and yellow light) using an LED as a light source.

Conventionally, as a vehicle lamp that obtains desired light distribution characteristics by using a plurality of LEDs as light sources and irradiating light emitted from each LED light source, Patent Document 1 describes the "condensing unit" of the "vehicle lamp". The configuration shown in 29 is disclosed.

The light source unit 80 is composed of three LED chips 81, 82, 83, and the three LED chips 81, 82, 83 are arranged along the width direction of the vehicle, and the LED chip located in the center of the light source unit 80. It has a reflector 86 provided with a reflecting surface 85 along a virtual light emitting surface having a position of 82 as a light source position and a virtual line as an axis 84.

Then, the emitted light from each of the LED chips 81, 82, and 83 is reflected in a predetermined direction by the reflecting surface 85 of the reflector 86, so that the reflected light is irradiated toward the front of the vehicle as irradiation light having a desired luminous intensity distribution. It is a thing.

Japanese Unexamined Patent Publication No. 2010-153269

By the way, the color of the emitted light of the fog lamp is defined as white light or yellow light in the UN standard, and the fog lamp is operated by selectively emitting either white light or yellow light according to the external driving environment such as road surface conditions and weather. The visibility of the person can be improved.

Therefore, in the light collecting unit 90 for vehicle lighting equipment disclosed in Patent Document 1, white is white at each position of two LED chips 81, 83 out of the three LED chips 81, 82, 83 constituting the light source unit 80. A white LED that emits light is arranged, and a yellow LED that emits yellow light is arranged at the position of the LED chip 82, and either the white LED or the yellow LED is driven by operating the fog lamp switch (lighting color switching switch) ( It is conceivable to selectively emit white light or yellow light by controlling the lighting.

However, in this case, there is a gap between the light distribution pattern formed by the white light and the light distribution pattern formed by the yellow light. That is, the irradiation area by the white emitted light and the irradiation area by the yellow emitted light are different from each other, resulting in a fog lamp having poor visibility for the driver. In particular, when the light color of the emitted light is switched, the visibility is significantly reduced.

Therefore, the present invention was devised in view of the above problems, and an object of the present invention is that white emitted light and yellow emitted light irradiate substantially the same region as each other, in other words, white emitted light. It is an object of the present invention to provide a fog lamp having good visibility for a driver by forming a light distribution pattern in which yellow emitted lights are substantially the same as each other.

In order to solve the above problems, the invention according to claim 1 of the present invention is an automobile provided with an optical system including an LED as a light source and an inner lens for controlling the light distribution of light emitted from the LED. The fog lamp for use, the LED is composed of a plurality of types of LEDs having different emission colors, and the inner lens is formed by integrally forming an even number of lenses of the same material and having the same shape and dimensions side by side. In front view, LEDs of different emission colors are located at positions of line symmetry with the lateral bisectors of each of the even number of lenses constituting the inner lens as the axis of symmetry, and at the same time, the lateral direction of the inner lens. It is characterized in that an LED having the same light emitting color is located at a position of line symmetry with the bisector of the above as the axis of symmetry.

The invention described in claim 2 of the present invention is an automobile fog lamp provided with an optical system including an LED as a light source and an inner lens for controlling the light distribution of light emitted from the LED. The LED is composed of a plurality of types of LEDs having different emission colors, and the inner lens is formed by integrally forming three or more odd lenses of the same material and having the same shape and dimensions side by side, and the front view of the optical system. Then, one of the plurality of types of LEDs is located on the lateral bisector of the lens located at the center of the odd number of lenses constituting the inner lens, and the other lenses are lateral to each other. LEDs of different emission colors are located at the position of line symmetry with the bisector of the direction as the axis of symmetry, and at the same time, the same emission color is located at the position of line symmetry with the bisector of the inner lens as the axis of symmetry. It is characterized in that the LED is located.

Further, in the invention described in claim 3 of the present invention, in either claim 1 or 2, the lower end of each light emitting surface of each of the LEDs is on the bisector of the inner lens in the vertical direction. It is characterized in that it is arranged so as to be located at.

Further, the invention according to claim 4 of the present invention is the light-shielding member arranged in the vicinity of the plurality of types of LEDs or in contact with the plurality of types of LEDs in any one of claims 1 to 3. The light-shielding member has an upper end portion extending from below and parallel to the vertical bisector of the inner lens, and the upper end portion is the lower end of each light emitting surface of the plurality of types of LEDs or emits light. It is characterized in that it is located at a position that covers a part of the lower part of the surface.

Further, in the invention described in claim 5 of the present invention, in any one of claims 1 to 4, the plurality of types of LEDs are a white LED that emits white light and a yellow LED that emits yellow light. It is characterized by being.

According to the present invention, an even number of lenses of the same material and the same shape and size are integrated side by side to form an inner lens, and the lateral bisector of each lens constituting the inner lens is set as the axis of symmetry. LEDs of different emission colors are arranged at the positions of line symmetry, and at the same time, white of the same emission color is arranged at the position of line symmetry with the lateral bisector of the inner lens as the axis of symmetry, and both LEDs are inner lenses. They were arranged so as to be located on approximately two equal lines in the vertical direction of.

As a result, the light distribution pattern formed by the white emitted light and the light distribution pattern formed by the yellow emitted light become substantially the same light distribution pattern, and as a result, a fog lamp having good visibility for the driver is provided. can do.

It is a front view of the 1st Embodiment which concerns on the fog lamp for an automobile of this invention. It is a top view of the 1st Embodiment which concerns on the fog lamp for an automobile of this invention. It is a side view of the 1st Embodiment which concerns on the fog lamp for an automobile of this invention. It is a ray diagram of white light whose light distribution is controlled by the right monocular lens. This is a light distribution pattern formed by white light whose light distribution is controlled by the right monocular lens. It is a ray diagram of white light whose light distribution is controlled by the left monocular lens. This is a light distribution pattern formed by white light whose light distribution is controlled by the left monocular lens. It is a ray diagram of white light whose light distribution is controlled by an inner lens. This is a light distribution pattern formed by white light whose light distribution is controlled by an inner lens. It is a ray diagram of yellow light whose light distribution is controlled by the right monocular lens. This is a light distribution pattern formed by yellow light whose light distribution is controlled by the right monocular lens. It is a ray diagram of yellow light whose light distribution is controlled by the left monocular lens. This is a light distribution pattern formed by yellow light whose light distribution is controlled by the left monocular lens. It is a ray diagram of yellow light whose light distribution is controlled by an inner lens. This is a light distribution pattern formed by yellow light whose light distribution is controlled by the inner lens. It is a front view of the 2nd Embodiment which concerns on the fog lamp for an automobile of this invention. This is a light distribution pattern formed by white light whose light distribution is controlled by the left and right monocular lenses. It is a light distribution pattern formed by white light whose light distribution is controlled by the central monocular lens. This is a light distribution pattern formed by white light whose light distribution is controlled by an inner lens. It is a front view of the 2nd Embodiment which concerns on the fog lamp for an automobile of this invention. This is a light distribution pattern formed by yellow light whose light distribution is controlled by the left and right monocular lenses. It is a light distribution pattern formed by yellow light whose light distribution is controlled by the central monocular lens. This is a light distribution pattern formed by yellow light whose light distribution is controlled by the inner lens. It is a front view of the 3rd Embodiment which concerns on the fog lamp for an automobile of this invention. It is a light distribution pattern of light whose light distribution is controlled by an inner lens. It is an optical path explanatory view using the BB sectional view of FIG. It is explanatory drawing of the light-shielding member. Similarly, it is explanatory drawing of the light-shielding member. It is explanatory drawing of the prior art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 28 (the same parts are designated by the same reference numerals). Since the embodiments described below are suitable specific examples of the present invention, various technically preferable limitations are added, but the scope of the present invention particularly limits the present invention in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

FIG. 1 is a front view of a first embodiment of the fog lamp for an automobile of the present invention, FIG. 2 is a plan view, and FIG. 3 is a side view.

In the following description, the descriptions indicating the directions of "horizontal", "upper", "lower", "left", "right", "front", and "rear" are in the state of being mounted on the front part of the vehicle. Indicates the direction when the fog lamp for an automobile is viewed from the driver's side.

The fog lamp for an automobile of the present invention includes an optical system including an LED as a light source and an inner lens that controls light distribution of light emitted from the LED.

The optical system 1 of the first embodiment is an inner having a binocular lens configuration in which two monocular lenses (a monocular lens 10 on the right side and a monocular lens 20 on the left side) made of the same material and having the same shape and dimensions are arranged side by side and integrally. The lens 2, the white LED 3a arranged on the right side behind the right monocular lens 10, the yellow LED 4a arranged on the left side, the yellow LED 4b arranged on the right side behind the left monocular lens 20, and the left side arranged. It has a white LED 3b.

In each of the monocular lens 10 and the monocular lens 20 constituting the inner lens 2, the front surface (light emitting surface) 11 and 21 are composed of aspherical convex surfaces, and the back surface (light incident surface) 12 and 22 are aspherical. It consists of a meniscus lens composed of concave surfaces.

In the white LED 3a and the yellow LED 4a arranged behind the monocular lens 10, the lower ends 3ab and 4ab of the light emitting surfaces 3aa and 4aa, respectively, are the vertical center lines of the inner lens 2 when viewed from the light emitting surface 11 side. The white LED 3b and the yellow LED 4b arranged so as to be located on the bisection line) X and similarly arranged behind the monocular lens 20 are the light emitting surfaces 3ba respectively when viewed from the light emitting surface 21 side. And the lower ends 3bb and 4bb of 4ba are arranged so as to be located on the center line (bisection line) X in the vertical direction of the inner lens 2.

At the same time, the white LED 3a and the yellow LED 4a are positioned so that the lateral centers of the light emitting surfaces 3aa and 4aa are symmetrical with respect to _{the lateral center line (bisector) Y 10 of the monocular lens 10.} Similarly, the white LED 3b and the yellow LED 4b are arranged so that the lateral centers of the light emitting surfaces 3ba and 4ba, respectively, are symmetrical with respect to _{the lateral center line (bisector) Y 20 of the monocular lens 20.} Arranged to be located.

At the same time, the lateral center line Y ₁₀ of the monocular lens 10 and the lateral center line Y ₂₀ of the monocular lens 20 are symmetrical with respect to the lateral center line (bisector) Y of the inner lens 2. The white LED 3a and the white LED 3b are located symmetrically with respect to the center line Y of the inner lens 2, and similarly, the yellow LED 4a and the yellow LED 4b are positioned symmetrically with respect to the center line Y of the inner lens 2. Is located in.

In the present embodiment, the yellow LED 4a is located on the side of the center line Y of the inner lens 2 and the white LED 3a is located on the side opposite to the center line Y with _{the center line Y 10} of the monocular lens 10 interposed therebetween. The yellow LED 4b is located on the side of the center line Y of the inner lens 2 and the white LED 3b is located on the side opposite to the center line Y with the center line Y _{20 in between.}

In the optical system having the above configuration, the optical path tracking diagram of the light emitted from each LED and controlled by the inner lens is collated with the light distribution pattern formed by the light distribution controlled light. explain. The light ray tracing diagram shows the loci of the light rays traveling on the AA cross section of the inner lens 2, and the light distribution pattern is the light distribution formed by the irradiation light applied to the virtual ray tracing screen arranged in front of the inner lens. Show the pattern.

First, as shown in FIG. 4, a monocular lens located on the right side of the monocular lens 10 and the monocular lens 20 constituting the inner lens 2 by radiating light from the white LED 3a located on the right side of the white LED 3a and the white LED 3b. The light (light rays) transmitted through 10 and whose light distribution is controlled is refracted in the focusing direction to the extent that the respective light rays do not intersect with each other, and at the same time, the central axis in which the optical path forming region of the light rays extends in the front-rear direction of the monocular lens 10. It is asymmetric with respect to Z ₁₀ and is offset to the left.

Therefore, the light distribution pattern formed on the virtual vertical screen by the light (light rays) emitted from the white LED 3a and controlled by the monocular lens 10 has the shape shown in FIG. In this case, on the virtual vertical screen, the straight line in which the horizontal plane including the center line X of the inner lens 2 intersects the virtual vertical screen is set as the horizontal reference line H which is the reference line in the vertical direction, and the horizontal reference line H in the horizontal direction of the inner lens 2 is used. A straight line in which the vertical plane (vertical surface) including the center line Y intersects the virtual straight line is set as the vertical reference line V which is the reference line in the horizontal direction.

From FIG. 5, in the light distribution pattern Wa formed on the virtual perpendicular screen, the optical path forming region of the light (light rays) whose light distribution is controlled by the monocular lens 10 is located on the central axis Z ₁₀ of the monocular lens 10 in the horizontal direction. On the other hand, it is formed at a position offset to the left with respect to the vertical reference line V, reflecting the fact that it is offset to the left.

Further, in the vertical direction of the light distribution pattern Wa, the upper end Wa _U is positioned at a position substantially equal to the horizontal reference line H and is formed below the upper end Wa U. The upper end Wa _U of the light distribution pattern Wa forms a cut-off line, and the lower end 3ab of the light emitting surface 3aa of the white LED 3a is projected.

On the other hand, as shown in FIG. 6, a monocular lens located on the left side of the monocular lens 10 and the monocular lens 20 forming the inner lens 2 by radiating light from the white LED 3b located on the left side of the white LED 3a and the white LED 3b. The light (light rays) transmitted through 20 and whose light distribution is controlled is refracted in the focusing direction to the extent that the respective light rays do not intersect with each other, and at the same time, the central axis in which the optical path forming region of the light rays extends in the front-rear direction of the monocular lens 20. It is asymmetric with respect to Z ₂₀ and is offset to the right.

Therefore, the light distribution pattern formed on the virtual vertical screen by the light (light rays) emitted from the white LED 3b and controlled by the monocular lens 20 has the shape shown in FIG.

From FIG. 7, in the light distribution pattern Wb formed on the virtual perpendicular screen, the optical path forming region of the light (light rays) whose light distribution is controlled by the monocular lens 20 is located on the central axis Z ₂₀ of the monocular lens 20 in the horizontal direction. On the other hand, it is formed at a position offset to the right with respect to the vertical reference line V, reflecting the fact that it is offset to the right.

Further, in the vertical direction of the light distribution pattern Wb, the upper end Wb _U is positioned substantially at the position of the horizontal reference line H and is formed below the upper end Wb U. The upper end Wb _U of the light distribution pattern Wb forms a cut-off line, and the lower end 3bb of the light emitting surface 3ba of the white LED 3b is projected.

Therefore, the light (light rays) emitted from the white LED 3a and transmitted through the monocular lens 10 and controlled for light distribution and the light (light rays) emitted from the white LED 3b and transmitted through the monocular lens 20 and controlled for light distribution are combined. As shown in FIG. 8, the formed optical path forming region is located in a range substantially symmetric with respect to the central axis Z extending in the front-rear direction of the inner lens 2.

Therefore, the light distribution pattern formed by the mixed light of the white light emitted from the white LED 3a and controlled by the monocular lens 10 and the white light emitted from the white LED 3b and controlled by the monocular lens 20 is formed. , The light distribution pattern Wa shown in FIG. 5 and the light distribution pattern Wb shown in FIG. 7 are superimposed to form a light distribution pattern W (see FIG. 9).

As can be seen from FIG. 9, the light distribution pattern W formed by white light has a shape substantially symmetrical with respect to the vertical reference line V. Therefore, the light has good visibility for the driver and enhances the safety of driving.

Further, similarly to the white LED 3a and the white LED 3b, as shown in FIG. 10, the monocular lens 10 and the monocular that constitute the inner lens 2 are emitted radially from the yellow LED 4a located on the right side of the yellow LED 4a and the white LED 4b. The light (light rays) whose light distribution is controlled by passing through the monocular lens 10 located on the right side of the lens 20 is refracted in the focusing direction to the extent that the respective light rays do not intersect with each other, and at the same time, the light path forming region of the light rays is formed. It is offset to the right asymmetrical with respect to the central axis Z ₁₀ monocular lens 10.

Therefore, the light distribution pattern formed on the virtual vertical screen by the light (light rays) emitted from the yellow LED 4a and controlled by the monocular lens 10 has the shape shown in FIG.

From FIG. 10, in the light distribution pattern Ya formed on the virtual perpendicular screen, the optical path forming region of the light (light rays) whose light distribution is controlled by the monocular lens 10 is aligned with the central axis Z ₁₀ of the monocular lens 10 in the horizontal direction. On the other hand, it is formed at a position offset to the right with respect to the vertical reference line V, reflecting the fact that it is offset to the right.

Further, in the vertical direction of the light distribution pattern Ya, the upper end Ya _U is positioned substantially at the position of the horizontal reference line H and is formed below the upper end Ya U. The upper end Ya _U of the light distribution pattern Ya forms a cut-off line, and the lower end 4ab of the light emitting surface 4aa of the yellow LED 4a is projected.

On the other hand, as shown in FIG. 12, a monocular lens located on the left side of the monocular lens 10 and the monocular lens 20 forming the inner lens 2 by radiating light from the yellow LED 4b located on the left side of the yellow LED 4a and the yellow LED 4b. The light (light rays) transmitted through 20 and whose light distribution is controlled is refracted in the focusing direction to the extent that the respective light rays do not intersect with each other, and at the same time, the light path forming region of the light rays is relative to the central axis Z _{20 of the monocular lens 20.} It is asymmetric and is biased to the left.

Therefore, the light distribution pattern formed on the virtual vertical screen by the light (light rays) emitted from the yellow LED 4b and controlled by the monocular lens 20 has the shape shown in FIG.

From FIG. 13, in the light distribution pattern Yb formed on the virtual perpendicular screen, the optical path forming region of the light (light rays) whose light distribution is controlled by the monocular lens 20 is located on the central axis Z ₂₀ of the monocular lens 20 in the horizontal direction. On the other hand, it is formed at a position offset to the left with respect to the vertical reference line V, reflecting the fact that it is offset to the left.

Further, in the vertical direction of the light distribution pattern Yb, the upper end Yb _U is positioned at a position substantially equal to the horizontal reference line H and is formed below the upper end Yb U. The upper end Yb _U of the light distribution pattern Yb forms a cut-off line, and the lower end 4bb of the light emitting surface 4ba of the yellow LED 4b is projected.

Therefore, the light (light rays) emitted from the yellow LED 4a and transmitted through the monocular lens 10 and controlled for light distribution and the light (light rays) emitted from the yellow LED 4b and transmitted through the monocular lens 20 and controlled for light distribution are combined. As shown in FIG. 14, the formed optical path forming region is located in a range substantially symmetric with respect to the central axis Z of the inner lens 2.

Therefore, the light distribution pattern formed by the mixed light of the yellow light emitted from the yellow LED 4a and controlled by the monocular lens 10 and the yellow light emitted from the yellow LED 4b and controlled by the monocular lens 20 is formed. , The light distribution pattern Ya shown in FIG. 11 and the light distribution pattern Yb shown in FIG. 13 are superimposed to form a light distribution pattern Y (see FIG. 15).

As can be seen from FIG. 15, the light distribution pattern Y formed in yellow has a shape substantially symmetrical with respect to the vertical reference line V. Therefore, the light has good visibility for the driver and enhances the safety of driving.

Further, when the light distribution pattern W formed by white light (see FIG. 9) and the light distribution pattern Y formed by yellow light (see FIG. 15) are compared, they are almost the same at almost the same position on the virtual straight line screen. It is formed to the shape and dimensions. Therefore, even if either white light or yellow light is selectively emitted (switched) according to the external driving environment such as road surface conditions and weather conditions, the light distribution characteristics are almost the same, so that the driver does not feel uncomfortable. It will contribute to the improvement of driving safety.

It is also possible to change the positions of the white LED and the yellow LED with respect to the optical system having the above configuration. Specifically, the yellow LED 4a is arranged at the position of the white LED 3a and the white LED 3a is arranged at the position of the yellow LED 4a with respect to the monocular lens 10 on the right side. Similarly, the yellow LED 4b is arranged at the position of the white LED 3b and the white LED 3b is arranged at the position of the yellow LED 4b with respect to the left monocular lens 20.

In this case, the light distribution pattern formed by white light and the light distribution pattern formed by yellow light are interchanged, but both light distribution patterns have almost the same shape at almost the same position on the virtual straight-line screen. Formed to dimensions, there is little optical difference.

Next, a second embodiment of the fog lamp for automobiles of the present invention will be described. FIG. 16 is a front view of the second embodiment.

The optical system 5 of the second embodiment is the same as the optical system of the first embodiment described above, in which the inner lens 6 is made of the same material and has three monocular lenses having the same shape and dimensions (the monocular lens 10 on the right side and the monocular lens 30 in the center). The left monocular lens 20) was composed of a trinocular lens arranged side by side and integrally.

Among them, the monocular lens 10 located on the right side has the white LED 3a and the yellow LED 4a arranged at the same position as the monocular lens 10 of the first embodiment, and the monocular lens 20 located on the right side has the monocular lens 20 of the first embodiment. A white LED 3b and a yellow LED 4b are arranged at the same position, and one white LED 3c is arranged behind the added central monocular lens 30.

In the white LED 3c arranged behind the monocular lens 30, the lower end 3cc of the light emitting surface 3ca is located on the vertical center line (bisector) X of the inner lens 6 when viewed from the light emitting surface 31 side. At the same time, the center of the light emitting surface 3ca is arranged so as to be arranged on the horizontal center line (bisector) Y of the inner lens 6.

The lateral center line (bisector) Y of the inner lens 2 is located on the same line as _{the lateral center line (bisector) Y 30 of the monocular lens 30.}

Therefore, the light (light rays) emitted from the white LED 3a and transmitted through the monocular lens 10 and controlled for light distribution and the light (light rays) emitted from the white LED 3b and transmitted through the monocular lens 20 and controlled for light distribution are used. The formed light distribution pattern W has a shape substantially symmetrical with respect to the vertical reference line V as shown in FIG.

Further, the light distribution pattern Wc formed by the light (light rays) emitted from the white LED 3c and transmitted through the central monocular lens 30 and controlled to be distributed is relative to the vertical reference line V as shown in FIG. It has an almost symmetrical shape.

Therefore, the light distribution pattern (W + Wc) formed by the emitted light of the three white LEDs, the white LED 3a, the white LED 3b, and the white LED 3c, has a shape substantially symmetrical with respect to the vertical reference line V as shown in FIG. Have.

In this case, the light distribution pattern formed by the emitted light of the white LED 3c is superimposed on the light distribution pattern formed by the emitted light of the two white LEDs of the white LED 3a and the white LED 3b. As a result, the light intensity distribution of the light distribution pattern by the white light is increased and the visibility of the driver is improved, so that the driving safety is improved.

Further, one yellow LED 4c can be arranged in place of the white LED 3c at the position of the white LED 3c behind the added central monocular lens 30.

In this case, as shown in FIG. 20, in the yellow LED 4c arranged behind the monocular lens 30, the lower end 4cc of the light emitting surface 4ca is the center line in the vertical direction of the inner lens 6 when viewed from the light emitting surface 31 side. It is located on (bisection line) X, and at the same time, the center of the light emitting surface 4ca is arranged so as to be arranged on the line of the lateral center line (bisection line) Y of the inner lens 2.

The lateral center line (bisector) Y of the inner lens 2 is located on the same line as _{the lateral center line (bisector) Y 30 of the monocular lens 30.}

Therefore, the light (light rays) emitted from the yellow LED 4a and transmitted through the monocular lens 10 and controlled for light distribution and the light (light rays) emitted from the yellow LED 4b and transmitted through the monocular lens 20 and controlled for light distribution are used. The formed light distribution pattern Y has a shape substantially symmetrical with respect to the vertical reference line V as shown in FIG.

Further, the light distribution pattern Yc formed by the light (light rays) emitted from the yellow LED 4c and transmitted through the central monocular lens 30 and controlled to be distributed is relative to the vertical reference line V as shown in FIG. It has an almost symmetrical shape.

Therefore, the light distribution pattern (Y + Yc) formed by the emitted light of the three yellow LEDs, the yellow LED 4a, the yellow LED 4b, and the yellow LED 4c, has a shape substantially symmetrical with respect to the vertical reference line V as shown in FIG. Have.

In this case, the light distribution pattern formed by the emitted light of the yellow LED 4c is superimposed on the light distribution pattern formed by the emitted light of the two yellow LEDs of the yellow LED 4a and the yellow LED 4b. As a result, the light intensity distribution of the light distribution pattern by the yellow light is increased and the visibility of the driver is improved, so that the driving safety is improved.

Next, a third embodiment of the fog lamp for automobiles of the present invention will be described. FIG. 24 is a front view of the third embodiment.

The optical system 7 of the third embodiment adds a white LED 3d or a blue LED 8 to the rear of the right monocular lens 10 and the rear of the left monocular lens 20 to the optical system of the first embodiment described above. It is to be placed.

In the white LED 3d or the blue LED 8, the light emitting surface 3da or the light emitting surface 8a is below the vertical center line (bisector) X of the inner lens 2, and the lateral center line (2nd magnitude) of the monocular lens 10 is obtained. It is arranged on the branch line) Y _{10 and} on the lateral center line (bisector) Y _{20 of the monocular lens 20.}

FIG. 25 is a light distribution pattern formed by the emitted light of the three white LEDs, the white LED 3a, the white LED 3b, and the white LED 3d, and has a shape substantially symmetrical with respect to the vertical reference line V. The light distribution pattern formed by the emitted light of the white LED3a, the white LED3b and the blue LED8, the light distribution pattern formed by the emitted light of the yellow LED4a, the yellow LED4b and the white LED3d, the output of the yellow LED4a, the yellow LED4b and the blue LED8. Almost the same light distribution pattern is formed in the light distribution pattern formed by the light emission.

With the above LED configuration, it is possible to have a function as an accessory lamp other than the fog lamp.

By the way, in the first embodiment, the white LED 3a, the white LED 3b, the yellow LED 4a, and the yellow LED 4b are arranged so that the lower ends 3ab, 3bb, 4ab, and 4bb of the respective light emitting surfaces are the vertical center lines (bisection lines) of the inner lens 2. ) They are arranged so as to be located on X so that the lower ends of the respective LEDs form a cut-off line of the light distribution pattern.

As shown in FIG. 26, for example, the vertical light path forming region of the light (light rays) emitted from the white LED 3a and transmitted through the monocular lens 10 and controlled to be distributed is formed from the lower end 3ab of the light emitting surface 3aa. The upper limit is formed by the light (light ray) Lu that is emitted and transmitted through the uppermost portion of the monocular lens 10, and the lower limit is formed by the light (light ray) Ld that is emitted from the upper end 3ac of the light emitting surface 3aa and is transmitted through the lowermost portion of the monocular lens 10. It is formed.

Therefore, for example, when LEDs having different light emitting surface sizes are used as the light source, the positions of the lower ends of the light emitting surfaces of the LEDs are arranged so as to be located on the center line (bisection line) X in the vertical direction of the inner lens 2. As a result, the cut-off line at the upper end of the light distribution pattern is always formed at a fixed position by the light beam Lu regardless of the size of the light emitting surface, and the light distribution pattern formed by the portion that increases as the size of the light emitting surface increases. Is formed so as to extend downward in the cut-off line, and the size of the entire light distribution pattern is increased only downward.

From this, in the fog lamp that forms the light distribution by the optical system using the inner lens 2, even if LEDs having different light emitting surface sizes are used, the difference in the size of the light emitting surface with respect to the formed light distribution pattern is different. , It concerns only the size of the part located below the cut-off line. Therefore, even if LEDs having different light emitting surface sizes are used, it is possible to realize a lamp that satisfies the standard without changing the design of the optical system using the inner lens lens 2.

For example, when the lower end 3ab of the light emitting surface 3aa of the white LED 3a is not linear but is formed irregularly, the emitted light Lu from the lower end 3ab has a blurred edge and is formed by the emitted light Lu. The cut-off line of the light distribution pattern is also formed in a blurred state.

Therefore, in order to prevent this, as shown in FIG. 27, the linear upper end 40a extending from the lower side to the upper side in the vicinity of the light emitting surface 3aa of the white LED 3a or in contact with the light emitting surface 3aa is the lower end 3ab of the light emitting surface 3aa. The light-shielding member 40 is provided on the same line as the above or at a position slightly higher than the lower end 3ab. In other words, as shown in FIG. 28, the upper end 40a is located on the same line as the vertical center line (bisector) X of the inner lens 2 or slightly higher than the center line (bisector) X in the front view. A light-shielding member 40 is provided so as to be located at.

As a result, the light emitted from the vicinity of the lower end 3ab of the light emitting surface 3aa of the white LED 3a and the vicinity of the lower end 4ab of the light emitting surface 4aa of the yellow LED 4a is blocked by the light shielding member 40, and the light (light rays) transmitted through the uppermost portion of the monocular lens 10 is emitted. A clear cut-off line is formed, and at the same time, the light emitted from the vicinity of the lower end 3bb of the light emitting surface 3ba of the white LED 3b and the vicinity of the lower end 4bb of the light emitting surface 4ba of the yellow LED 4b is blocked by the light shielding member 40 to block the uppermost portion of the monocular lens 20. The transmitted light (light rays) forms a clear cut-off line.

As the inner lens, a plurality of monocular lenses may be integrally formed by molding or the like, or individual monocular lenses may be integrally formed by a method such as adhesion in a subsequent step.

1 ... Optical system 2 ... Inner lens 3 ... White LED
3a ... White LED
3aa ... Light emitting surface 3ab ... Lower end 3ac ... Upper end 3b ... White LED
3ba ... Light emitting surface 3bb ... Lower end 3c ... White LED
3ca ... Light emitting surface 3cc ... Lower end 3d ... White LED
3da ... Light emitting surface
4 ... Yellow LED
4a ... Yellow LED
4aa ... Light emitting surface 4ab ... Lower end 4b ... Yellow LED
4ba ... Light emitting surface 4bb ... Lower end 4c ... Yellow LED
4ca ... Light emitting surface 4cc ... Lower end 4d ... Yellow LED
4da ... Light emitting surface 5 ... Optical system 6 ... Inner lens 7 ... Optical system 8 ... Blue LED
8a ... Light emitting surface 10 ... Monocular lens 11 ... Front surface (light emitting surface)
12 ... Back surface (light incident surface)
20 ... Monocular lens 21 ... Front surface (light emitting surface)
22 ... Back surface (light incident surface)
30 ... Monocular lens 31 ... Front surface (light emitting surface)
40 ... Shading member 40a ... Upper end

Claims (5)

LED of the light source and
An automobile fog lamp provided with an optical system having an inner lens for controlling the distribution of light emitted from the LED.
The LED is composed of a plurality of types of LEDs having different emission colors.
The inner lens is formed by integrally forming an even number of lenses of the same material and having the same shape and dimensions side by side.
In front view of the optical system, LEDs having different emission colors are positioned at a position of line symmetry with the lateral bisectors of each of the even number lenses constituting the inner lens as the axis of symmetry, and at the same time, the inner An automobile fog lamp characterized in that LEDs of the same emission color are located at a position of line symmetry with the lateral even number line of the lens as the axis of symmetry. LED of the light source and
An automobile fog lamp provided with an optical system having an inner lens for controlling the distribution of light emitted from the LED.
The LED is composed of a plurality of types of LEDs having different emission colors.
In the inner lens, three or more odd-numbered lenses of the same material and the same shape and size are formed side by side and integrally.
In front view of the optical system, one of the plurality of types of LEDs is located on the lateral bisector of the lens located at the center of the odd number of lenses constituting the inner lens, and the other lenses are present. LEDs of different emission colors are located at a position of line symmetry with the lateral bisector of each lens as the axis of symmetry, and at the same time, line symmetry with the lateral bisector of the inner lens as the axis of symmetry. An automobile fog lamp characterized in that an LED having the same emission color is located at a position. 2. Fog lamps for automobiles. A light-shielding member arranged in the vicinity of the plurality of types of LEDs or in contact with the plurality of types of LEDs is provided.
The light-shielding member has an upper end portion extending from below and parallel to the vertical bisector of the inner lens, and the upper end portion is the lower end of each light emitting surface of the plurality of types of LEDs or the lower portion of the light emitting surface. The fog lamp for an automobile according to any one of claims 1 to 3, wherein the fog lamp is located at a position corresponding to a part of the above. The fog lamp for an automobile according to any one of claims 1 to 4, wherein the plurality of types of LEDs are a white LED that emits white light and a yellow LED that emits yellow light.

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