JP2019096409A - Vehicle fog lamp - Google Patents

Abstract

To provide a vehicle fog lamp having an excellent visibility for a driver by forming light distribution patterns having substantially the same white emission light and yellow emission light.SOLUTION: An inner lens 2 is formed by integrally aligning two monocular lenses 10, 20 having the same shape dimension. At positions which is line-symmetric with respect to a symmetric axis which is a bisector line Y, Yin a transverse direction of each of the monocular lenses 10, 20 configuring the inner lens 2, white color LED3a and yellow color LED4a, and white color LED3b and yellow color LED4b having different light-emission colors are provided. At the same time, at positions which is line-symmetric with respect to a symmetric axis which is a bisector line Y in a transverse direction of the inner lens 2, white color LED3a and white color LED3b, and yellow color LED4a and yellow color LED4b having the same light-emission colors are provided. Also, each LED is aligned so as to position on a substantially bisector line X in a vertical direction of the inner lens 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an automotive fog lamp, and more particularly to an automotive 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 which obtains a desired light distribution characteristic by using a plurality of LEDs as a light source and emitting light emitted from each LED light source, as a "light collecting unit" of "vehicle lamp" in Patent Document 1, illustrated. An arrangement shown at 29 is disclosed.

  It comprises a light source unit 80 with three LED chips 81, 82, 83, and arranges the three LED chips 81, 82, 83 along the width direction of the vehicle, and an LED chip located at the center of the light source unit 80 A reflector 86 is provided with a reflecting surface 85 along a virtual paraboloid whose focal position is at the position 82 and the axis 84 is at the virtual line.

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

JP, 2010-153269, A

  By the way, fog lights are defined in UN standards as white light or yellow light, and they are driven by selectively emitting either white light or yellow light according to the external traveling environment such as road surface conditions and weather. Can improve the visibility of the person.

 Therefore, in the light collecting unit 90 of the vehicle lamp disclosed in the above-mentioned Patent Document 1, white light is provided at the respective positions of two of the three LED chips 81, 82, 83 constituting the light source unit 80. A white LED emitting light is arranged and a yellow LED emitting 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 (light color switching switch) It is conceivable to selectively emit white light or yellow light by controlling the lighting.

  However, in this case, a deviation occurs between the light distribution pattern formed by white light and the light distribution pattern formed by yellow light. That is, the irradiation area by the white emission light and the irradiation area by the yellow emission 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 outgoing light is switched, a noticeable decrease in visibility is caused.

  Therefore, the present invention has been made in view of the above problems, and the object of the present invention is to emit a white emission light and a yellow emission light to the substantially same area as each other, in other words, a white emission light. An object of the present invention is to provide a fog lamp with good visibility to the driver by forming light distribution patterns substantially identical to each other with yellow emitted light.

  In order to solve the above problems, the invention described in claim 1 of the present invention is an automobile provided with an optical system having an LED of a light source and an inner lens that performs light distribution control of light emitted from the LED. It is a fog lamp, and the LED is composed of a plurality of types of LEDs having different emission colors, and the inner lens is integrally formed with an even number of lenses of the same shape and size made of the same material horizontally and integrally When viewed from the front, LEDs of different emission colors are located at positions of line symmetry symmetrical with the horizontal bisector of each of the even number of lenses constituting the inner lens as the axis of symmetry. The LEDs of the same emission color are located at positions of line symmetry with the bisector of the line as the axis of symmetry.

  The invention described in claim 2 of the present invention is a fog lamp for an automobile comprising an optical system having an LED of a light source and an inner lens for performing light distribution control of emitted light from the LED, The LED is composed of a plurality of types of LEDs having different emission colors, and the inner lens is integrally formed with three or more odd-numbered lenses of the same shape and size made of the same material laterally and integrally And one of the plurality of types of LEDs is positioned on the horizontal bisector of the lens located at the center among the odd number of lenses constituting the inner lens, and the respective lateral sides of the other lenses are arranged. LEDs of different emission colors are located at positions of line symmetry with the bisector of the direction as the axis of symmetry, and at the same time with the same emission color at positions of line symmetry with the bisector of the inner lens as the axis of symmetry. LED And it is characterized in that it is located.

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

  The invention described in claim 4 of the present invention is the light shielding member according to any one of claims 1 to 3, wherein the light shielding member is disposed in the vicinity of the plurality of LEDs or in contact with the plurality of LEDs. The light shielding member has an upper end portion extending from below and parallel to the vertical bisector of the inner lens, the upper end portion being a lower end of each light emitting surface of the plurality of LEDs or light emission It is characterized in that it is positioned at a part of the lower part of the surface.

  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 emitting white light and a yellow LED emitting yellow light. It is characterized by a certain thing.

  According to the present invention, an even number of lenses of the same shape and size made of the same material are integrated side by side to form an inner lens, and the bisector of the horizontal direction of each lens constituting the inner lens is taken as the axis of symmetry. The LEDs of different emission colors are disposed at the position of line symmetry, and at the same time, the white of the same emission color is disposed at the position of line symmetry with the bisector of the inner lens in the horizontal direction as the axis of symmetry. It arranges so that it may be located on the substantially bisector of the up-down 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 as each other, and as a result, a fog lamp having good visibility for the driver is provided. can do.

It is a front view of 1st Embodiment which concerns on the fog lamp for motor vehicles of this invention. It is a top view of 1st Embodiment concerning the fog lamp for cars of the present invention. It is a side view of 1st Embodiment concerning the fog lamp for motor vehicles of this invention. It is a ray diagram of the white light by which light distribution control was carried out with the right side monocular lens. It is a light distribution pattern formed of white light whose light distribution is controlled by the right-side single-lens lens. It is a ray diagram of the white light by which light distribution control was carried out with the left monocular lens. It is a light distribution pattern formed of white light whose light distribution is controlled by the left monocular lens. It is a ray diagram of the white light by which light distribution control was carried out by the inner lens. It is a light distribution pattern formed of white light whose light distribution is controlled by the inner lens. It is a ray diagram of the yellow light by which light distribution control was carried out with the right side monocular lens. It is a light distribution pattern formed of yellow light whose light distribution is controlled by the right-side monocular lens. It is a ray diagram of the yellow light by which light distribution control was carried out with the left monocular lens. It is a light distribution pattern formed of 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 the inner lens. It is a light distribution pattern formed of yellow light whose light distribution is controlled by the inner lens. It is a front view of 2nd Embodiment which concerns on the fog lamp for motor vehicles of this invention. It is a light distribution pattern which the white light by which light distribution control was carried out with the monocular lens on either side is formed. It is a light distribution pattern formed of white light whose light distribution is controlled by a single lens at the center. It is a light distribution pattern formed of white light whose light distribution is controlled by the inner lens. It is a front view of 2nd Embodiment which concerns on the fog lamp for motor vehicles of this invention. It is a light distribution pattern formed of yellow light whose light distribution is controlled by single lenses on the left and right. It is a light distribution pattern formed of yellow light whose light distribution is controlled by a single lens at the center. It is a light distribution pattern formed of yellow light whose light distribution is controlled by the inner lens. It is a front view of 3rd Embodiment concerning the fog lamp for cars of the present invention. It is a light distribution pattern of the light distribution-controlled by the inner lens. It is optical-path explanatory drawing using the BB sectional drawing of FIG. It is explanatory drawing of a light-shielding member. Similarly, it is explanatory drawing of a light-shielding member. It is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 28 (the same reference numerals are given to the same parts). The embodiment described below is a preferable specific example of the present invention, and therefore, various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. The present invention is not limited to these embodiments unless otherwise stated.

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

  In the following description, the description indicating the direction of “horizontal”, “upper”, “lower”, “left”, “right”, “front”, “rear” is the state mounted on the front of the vehicle Indicates the direction when the vehicle fog lamp is viewed from the driver's side.

  The automotive fog lamp of the present invention is provided with an optical system having an LED of a light source and an inner lens that performs light distribution control of emitted light from the LED.

  The optical system 1 according to the first embodiment has an inner of a double-lens configuration in which two single lenses (the right single-lens 10 and the left single-lens 20) of the same shape and size made of the same material are integrally arranged side by side. Lens 2, white LED 3a arranged on the right behind and yellow LED 4a arranged on the left behind single-lens 10 on the right, and yellow LED 4b arranged on right behind rear of monocular lens 20 on the left and arranged on left And a white LED 3b.

  Each of the monocular lens 10 and the monocular lens 20 constituting the inner lens 2 has a front surface (light emitting surface) 11 and 21 formed by an aspheric convex surface and a rear surface (light incident surface) 12 and 22 is an aspheric surface. It consists of a meniscus lens composed of a concave surface.

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

At the same time, white LED3a and yellow LED4a, as lateral center of the light emitting surface 3aa and 4aa each are located at symmetrical positions to each other with respect to the transverse center line _{(bisector) Y 10} monocular lens 10 Similarly, the white LEDs 3b and the yellow LEDs 4b are arranged such that the centers of the light emitting surfaces 3ba and 4ba in the lateral direction are symmetrical to each other with respect to the lateral center line (disection line) Y _{20 of the} single lens 20. It is arranged to be located.

Further simultaneously, the lateral centerline Y ₂₀ in the lateral direction of the center line Y ₁₀ and monocular lens 20 monocular lens 10, the lateral centerline of the inner lens 2 (bisector) symmetrically to each other with respect to Y And the white LEDs 3a and the white LEDs 3b are located at symmetrical positions with respect to the center line Y of the inner lens 2. Similarly, the yellow LEDs 4a and the yellow LEDs 4b are located at symmetrical positions with respect to the center line Y of the inner lens 2. It is located in

In the present embodiment, located opposite the white LED3a is the center line Y with yellow LED4a across the center line Y ₁₀ monocular lens 10 is positioned on the side of the center line Y of the inner lens 2, monocular lens 20 The yellow LED 4 b is located on the side of the center line Y of the inner lens 2 with the center line Y ₂₀ in between, and the white LED 3 b is located on the opposite side of the center line Y.

  In the optical system of the above configuration, the light path tracking diagram of light emitted from each LED and light distribution controlled by the inner lens is collated with the light distribution pattern formed by the light controlled light. explain. The ray tracing diagram shows the locus of a ray traveling on the cross section AA of the inner lens 2, and the light distribution pattern is a light distribution formed by the irradiation light irradiated to a virtual straight line screen disposed in front of the inner lens. Indicates a pattern.

First, as shown in FIG. 4, the white LEDs 3 a located on the right side out of the white LEDs 3 a and the white LEDs 3 b radiate radially, and a single eye lens located on the right side among the single lenses 10 and 20 forming the inner lens 2. A light (light beam) whose light distribution is controlled by being transmitted through 10 is refracted in the condensing direction to such an extent that the respective light beams do not cross each other, and at the same time the central axis of the light path forming region extends in the front and back direction of the single lens 10 It is asymmetric with respect to Z ₁₀ and biased to the left.

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

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

Also, the vertical light distribution pattern Wa, are formed in the downward positions the upper end Wa _U in position substantially horizontal reference line H. Upper Wa _U of the light distribution pattern Wa forms a cut-off line, a lower end 3ab of the light-emitting surface 3aa of the white LED3a is one that was projected.

On the other hand, as shown in FIG. 6, the white LEDs 3b located on the left side out of the white LEDs 3a and the white LEDs 3b radiate radially, and the single lenses located on the left side among the single lenses 10 and 20 forming the inner lens 2 A light (light beam) whose light distribution is controlled by being transmitted through 20 is refracted in the condensing direction to the extent that the respective light beams do not cross each other, and at the same time the central axis extends in the light path forming region It is asymmetric with respect to Z ₂₀ and biased to the right.

  Therefore, a light distribution pattern formed on a virtual straight line screen by light (light rays) emitted from the white LED 3b and subjected to light distribution control by the single lens 20 has a shape shown in FIG.

From FIG. 7, in the light distribution pattern Wb formed on the virtual straight line screen, in the horizontal direction, the optical path forming region of the light (light ray) whose light distribution is controlled by the single lens 20 is the central axis Z ₂₀ of the single lens 20. It is formed at a position offset to the right with respect to the vertical reference line V reflecting the offset to the right side.

Further, in the vertical direction of the light distribution pattern Wb, the upper end Wb _U is located substantially at the position of the horizontal reference line H and is formed therebelow. Upper Wb _U of the light distribution pattern Wb forms a cut-off line, a lower end 3bb of the light-emitting surface 3ba of the white LED3b is one that was projected.

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

  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 A light distribution pattern W in which the light distribution pattern Wa shown in FIG. 5 and the light distribution pattern Wb shown in FIG. 7 are superimposed is formed (see FIG. 9).

  As can be seen from FIG. 9, the light distribution pattern W formed of white light has a substantially symmetrical shape with respect to the vertical reference line V. Therefore, it is possible to enhance the safety of traveling as a light with good visibility for the driver.

Further, as shown in FIG. 10, the monocular lens 10 and the monocular lens 10 constituting the inner lens 2 radiate radially from the yellow LED 4a located on the right side among the yellow LED 4a and the white LED 4b, as in the white LED 3a and the white LED 3b. The light (light beam) whose light distribution is controlled by transmitting through the single-lens lens 10 positioned on the right side of the lens 20 is refracted in the condensing direction to such an extent that the respective light beams do not cross each other. It is offset to the right asymmetrical with respect to the central axis Z ₁₀ monocular lens 10.

  Therefore, a light distribution pattern formed on a virtual straight line screen by light (light rays) emitted from the yellow LED 4a and subjected to light distribution control by the single lens 10 has a shape shown in FIG.

From FIG. 10, in the light distribution pattern Ya formed on the virtual straight line screen, in the horizontal direction, the optical path forming region of the light (light beam) whose light distribution is controlled by the single lens 10 is the central axis Z ₁₀ of the single lens 10. It is formed at a position offset to the right with respect to the vertical reference line V reflecting the offset to the right side.

Also, the vertical light distribution pattern Ya, are formed in the downward positions the upper end Ya _U in position substantially horizontal reference line H. Upper Ya _U of the light distribution pattern Ya forms a cut-off line, in which the lower end 4ab of the light-emitting surface 4aa yellow LED4a is projected.

On the other hand, as shown in FIG. 12, the yellow LED 4 b located on the left side out of the yellow LED 4 a and the yellow LED 4 b radiates radially and a single eye lens located on the left side among the single lens 10 and single lens 20 constituting the inner lens 2. The light (light ray) whose light distribution is controlled by being transmitted through the light source 20 is refracted in the condensing 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 with respect to the central axis Z _{20 of the} single lens 20 It is asymmetric and is offset to the left.

  Therefore, a light distribution pattern formed on a virtual straight line screen by light (light rays) emitted from the yellow LED 4b and subjected to light distribution control by the single lens 20 has a shape shown in FIG.

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

Also, the vertical light distribution pattern Yb, are formed in the downward positions the upper end Yb _U in position substantially horizontal reference line H. Upper Yb _U of the light distribution pattern Yb forms a cut-off line, in which the lower end 4bb of the light-emitting surface 4ba yellow LED4b is projected.

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

  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 The light distribution pattern Y in which the light distribution pattern Ya shown in FIG. 11 and the light distribution pattern Yb shown in FIG. 13 are superimposed is formed (see FIG. 15).

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

  Further, when a light distribution pattern W (see FIG. 9) formed of white light and a light distribution pattern Y (see FIG. 15) formed of yellow light are compared, substantially the same positions on the virtual straight line screen are substantially the same. It is formed in shape and size. Therefore, even if selective emission (switching) of either white light or yellow light according to the external traveling environment such as the road surface condition or the weather, the light distribution characteristic is almost the same, and the driver does not feel discomfort. It contributes to the improvement of driving safety.

  In addition, it is also possible to change the position of white LED and yellow LED with respect to the optical system of the said structure. Specifically, the yellow LED 4a is disposed at the position of the white LED 3a with respect to the single-lens lens 10 on the right side, and the white LED 3a is disposed at the position of the yellow LED 4a. Similarly, the yellow LED 4b is disposed at the position of the white LED 3b with respect to the single-lens lens 20 on the left side, and the white LED 3b is disposed at the position of the yellow LED 4b.

  In this case, the light distribution pattern formed of white light and the light distribution pattern formed of yellow light are interchanged, but the light distribution patterns of both are substantially the same at substantially the same position on the virtual straight line screen. There is almost no optical difference because it is dimensioned.

  Next, a second embodiment of the fog lamp for an automobile according to 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 except that the inner lens 6 is made up of three monocular lenses of the same shape and size (a monocular lens 10 on the right and a monocular lens 30 at the center). And the left monocular lens 20) was constructed of a trinocular lens arranged laterally and integrally.

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

  In the white LED 3c disposed behind the monocular lens 30, the lower end 3cb of the light emitting surface 3ca is positioned on the vertical center line (bisection line) X of the inner lens 6 in a front view as viewed from the light emitting surface 31 side. At the same time, the center of the light emitting surface 3 ca is arranged on the line of the lateral center line (disection line) Y of the inner lens 6.

The center line (disection line) Y in the lateral direction of the inner lens 2 is located on the same line as the center line (disection line) Y _{30 in} the lateral direction of the single lens 30.

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

  In addition, a light distribution pattern Wc formed of light (light beam) emitted from the white LED 3c and transmitted through the central single lens lens 30 and subjected to light distribution control is shown with respect to the vertical reference line V as shown in FIG. It has a substantially symmetrical shape.

  Therefore, the light distribution pattern (W + Wc) formed by the emitted light of the three white LEDs of the white LED 3a, the white LED 3b and the white LED 3c has a substantially symmetrical shape 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 3a and 3b. As a result, the luminous intensity distribution of the light distribution pattern by the white light is increased, and the visibility of the driver is enhanced, so that the traveling safety can be improved.

  Also, one yellow LED 4c can be disposed instead 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, the lower end 4cb of the light emitting surface 4ca of the yellow LED 4c disposed behind the monocular lens 30 is the center line in the vertical direction of the inner lens 6 in front view as viewed from the light emitting surface 31 side. The light emitting surface 4 ca is disposed on the line (disection line) X, and at the same time, the center of the light emitting surface 4 ca is disposed on the line of the center line (disection line) Y in the lateral direction of the inner lens 2.

The center line (disection line) Y in the lateral direction of the inner lens 2 is located on the same line as the center line (disection line) Y _{30 in} the lateral direction of the single lens 30.

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

  In addition, a light distribution pattern Yc formed of light (light beam) emitted from the yellow LED 4c and transmitted through the central single lens lens 30 and subjected to light distribution control is shown with respect to the vertical reference line V as shown in FIG. It has a substantially symmetrical shape.

  Therefore, the light distribution pattern (Y + Yc) formed by the emitted light of the three yellow LEDs of the yellow LED 4a, the yellow LED 4b and the yellow LED 4c has a substantially symmetrical shape 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 luminous intensity distribution of the light distribution pattern by yellow light is increased, and the visibility of the driver is enhanced, so that the traveling safety can be improved.

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

  In the optical system 7 of the third embodiment, a white LED 3 d or a blue LED 8 is added to the back of the right single-lens lens 10 and the back of the left single-lens 20 with respect to the optical system of the first embodiment described above. It is to arrange.

In the white LED 3 d or the blue LED 8, the light emitting surface 3 da or the light emitting surface 8 a is lower than the vertical center line (dielectric line) X of the inner lens 2, and the horizontal center line of the monocular lens 10 (2 The parting line) Y ₁₀ is disposed on the lateral center line (disection line) Y _{20 of the} single lens 20.

  FIG. 25 shows a light distribution pattern formed by the emitted light of the three white LEDs 3a, 3b and 3d, and has a substantially symmetrical shape with respect to the vertical reference line V. FIG. In addition, the light distribution pattern formed by the emitted light of the white LED 3a, the white LED 3b and the blue LED 8, the light distribution pattern formed by the emitted light of the yellow LED 4a, the yellow LED 4b and the white LED 3d, the emission of the yellow LED 4a, the yellow LED 4b and the blue LED 8 The light distribution pattern formed by the emitted light also forms substantially the same light distribution pattern.

  The above-described LED configuration can provide a function as an accessory lamp other than the fog lamp.

  By the way, in Embodiment 1, the arrangement of the white LED 3a, the white LED 3b, the yellow LED 4a and the yellow LED 4b is such that the lower end 3ab, 3bb, 4ab, 4bb of each light emitting surface is the centerline of the inner lens 2 in the vertical direction It arranges so that it may position on X), and the lower end of each LED forms the cut-off line of a light distribution pattern.

  For example, as shown in FIG. 26, the light path forming region of the light (light beam) emitted from the white LED 3a and transmitted through the single lens 10 and subjected to light distribution control is from the lower end 3ab of the light emitting surface 3aa. The upper limit is formed by the light (light ray) Lu emitted and transmitted through the uppermost portion of the monocular lens 10, and the lower limit is formed by the light (light ray) Ld emitted from the upper end 3ac of the light emitting surface 3aa and transmitted through the lowermost portion of the single lens 10 It is formed.

  Therefore, for example, when using LEDs with different light emitting surface sizes as light sources, the lower end of the light emitting surface of the LED is positioned on the center line (disection line) X in the vertical direction of the inner lens 2 Therefore, 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 emission surface, and the light distribution pattern formed in a portion that increases as the size of the light emission surface increases. Is extended to the lower side of the cut-off line, and the size of the entire light distribution pattern is only increased to the lower side.

  From this, in the fog lamp in which the light distribution is formed by the optical system using the inner lens 2, even if LEDs of different sizes of the light emission surface are used, the difference in the size of the light emission surface with respect to the light distribution pattern formed is , The size of the portion located below the cutoff line only. Therefore, even if LEDs having different light emitting surface sizes are used, a lamp satisfying the standard can be realized without changing the design of the optical system using the inner lens lens 2.

  Note that, for example, when the lower end 3ab of the light emitting surface 3aa of the white LED 3a is formed in a straight line and is irregularly formed, 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 blurred.

  Therefore, in order to prevent it, as shown in FIG. 27, a linear upper end 40a extends 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. And the light shielding member 40 is provided at a position somewhat higher than the lower end 3ab or the same line. In other words, as shown in FIG. 28, in a front view, the upper end 40a is located at a position somewhat higher than the center line (disection line) X in the vertical direction of the inner lens 2 or higher than the center line (disection line) X The light shielding member 40 is provided to be located at

  As a result, 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 ray) transmitted through the uppermost part of the single lens 10 A clear cutoff line is formed, and at the same time, 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 The transmitted light (light) forms a sharp cut-off line.

  The inner lens may be integrally formed of a plurality of single lenses by molding or the like, or individual single lenses may be integrated by a method such as adhesion in a later 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 3cb ... Lower end 3d ... White LED
3da ... Light emitting surface
4 ... Yellow LED
4a ... Yellow LED
4aa ... Luminous surface 4ab ... Bottom 4b ... Yellow LED
4ba ... Luminous surface 4bb ... Lower end 4c ... Yellow LED
4ca ... Luminous surface 4cb ... 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: Single lens 11: Front surface (light emitting surface)
12 ... back surface (light incident surface)
20 ... single-lens 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 ... top end

Claims (5)

With LED of light source,
And an inner lens for performing light distribution control of light emitted from the LED.
The said LED consists of multiple types of LED from which luminescent color differs,
In the inner lens, an even number of lenses of the same shape and size made of the same material are integrally formed side by side,
In the front view of the optical system, LEDs of different emission colors are located at positions of line symmetry with the horizontal bisectors of the even number of lenses constituting the inner lens as symmetry axes, and at the same time the inner An automotive fog lamp characterized in that LEDs of the same emission color are located at positions symmetrical with respect to the horizontal bisector of the lens. With LED of light source,
And an inner lens for performing light distribution control of light emitted from the LED.
The said LED consists of multiple types of LED from which luminescent color differs,
In the inner lens, three or more odd lenses of the same shape and size made of the same material are integrally formed side by side,
In the front view of the optical system, among the odd number of lenses constituting the inner lens, one of the plurality of types of LEDs is located on a horizontal bisector of the lens located at the center, and the others The LEDs of different emission colors are located at positions of line symmetry with the axis of symmetry of the respective lenses in the horizontal direction as the axis of symmetry, and at the same time line symmetrical with the axis of symmetry of the inner lens as the axis of symmetry. An automotive fog lamp characterized in that LEDs of the same luminescent color are located at positions.   The lower end of each light-emitting surface of each of the above-mentioned LEDs is arranged so that it may be located on the bisector of the up-and-down direction of the above-mentioned inner lens. Fog lights for cars. A light shielding member disposed in the vicinity of the plurality of LEDs or in contact with the plurality of LEDs;
The light shielding member has an upper end portion extending from below and parallel to a vertical bisector of the inner lens, and the upper end portion is a lower end of the light emitting surface of each of the plurality of LEDs or a lower portion of the light emitting surface The fog lamp according to any one of claims 1 to 3, wherein the fog lamp is located at a position corresponding to a part of.   The automotive fog lamp according to any one of claims 1 to 4, wherein the plurality of types of LEDs are a white LED emitting white light and a yellow LED emitting yellow light.