JP2010061848A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a light distribution pattern suitable for constituting a central part of the light distribution pattern for a high beam, after compactly constituting the vehicular lighting fixture, in the vehicular lighting fixture with a light emitting element as a light source. <P>SOLUTION: This vehicular lighting fixture is constituted for deflectively emitting light from the light emitting element 12 by a lens 14. In that case, the light emitting center O of the light emitting element 12 is arranged so as to be dislocated to the left side from the optical axis Ax. While, the lens 14 is constituted with right lower and left upper fan-shaped areas 14A1 and 14A2 as a reflection type Fresnel lens, and is constituted with a pair of fan-shaped areas 14B1 and 14B2 except for that as an ordinary Fresnel lens. In this case, a central angle of the respective fan-shaped areas 14B1 and 14B2 is set to 80°. Thus, a substantially fan-shaped light distribution pattern having the lower edge extending in the substantially horizontal direction at a little larger central angle than 180° can be formed by the emitting light from the fans-shaped areas 14A1 and 14A2, and a spot-like light distribution pattern can also be formed on its side by the emitting light from the fan-shaped areas 14B1 and 14B2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular illumination lamp configured to deflect and emit light from a light emitting element such as a light emitting diode forward by a lens.

  In recent years, a vehicular illumination lamp using a light emitting element as a light source has been adopted in a vehicular headlamp.

  For example, in “Patent Document 1”, a light emitting element is arranged behind the rear focal point of the projection lens arranged on the optical axis extending in the vehicle front-rear direction, and the light from the light emitting element is moved closer to the optical axis by the reflector. A projector-type vehicular illumination lamp that is configured to reflect light is described.

JP 2008-91349 A

  Since the vehicular illumination lamp described in the above-mentioned “Patent Document 1” is configured as a projector-type vehicular illumination lamp, the front and rear length of the lamp is long.

  On the other hand, if a direct illumination type vehicle illumination lamp configured to deflect and emit light from the light emitting element forward by a lens disposed on the front side of the light emitting element, the front and rear length of the lamp can be reduced. Can be shortened. At this time, if the lens is made of a Fresnel lens, the front and rear length of the lamp can be further shortened to make it compact.

  However, there is a problem that it is not easy to form a light distribution pattern suitable for the configuration of the central portion of the high beam light distribution pattern in a direct-type vehicle illumination lamp using such a light emitting element as a light source.

  That is, if the road surface in front of the vehicle is illuminated more brightly than necessary in the high beam light distribution pattern, the visibility in the distance will be reduced. Therefore, it is preferable that the light distribution pattern constituting the central portion of the high beam light distribution pattern is a substantially fan-shaped light distribution pattern whose lower end edge extends in a substantially horizontal direction. However, it is not easy to form a light distribution pattern having such a shape in a direct-type vehicle illumination lamp using a light emitting element as a light source.

  The present invention has been made in view of such circumstances, and in a vehicular illumination lamp using a light-emitting element as a light source, the configuration of the center portion of a high-beam light distribution pattern after having a compact configuration. It is an object of the present invention to provide a vehicular illumination lamp capable of forming a light distribution pattern suitable for a vehicle.

  The present invention is intended to achieve the above-mentioned object by making a direct-lighting type vehicle illumination lamp and devising the arrangement of the light-emitting elements and the lens configuration.

That is, the vehicular illumination lamp according to the present invention is:
A vehicle comprising: a light emitting element disposed in the vicinity of an optical axis extending in the front-rear direction of the lamp; and a lens disposed in front of the light emitting element and deflecting and emitting light from the light emitting element forward. In lighting fixtures,
The light emitting element is disposed so as to shift the light emission center of the light emitting element laterally from the optical axis;
The lens is formed with a plurality of annular prisms extending concentrically around the optical axis in a state where a cross-sectional shape along a plane including the optical axis is set in a sawtooth shape on a rear surface of the lens. It is configured as a Fresnel lens that emits light from a predetermined point on the optical axis located on the rear side of the lens toward the front as light parallel to the optical axis,
The Fresnel lens causes the light from the predetermined point to enter the annular prism in a manner that refracts the light from the optical axis on the inner peripheral surface of each annular prism, and then causes the incident light to enter the annular prism. It is configured as a reflective Fresnel lens that totally reflects forward on the outer peripheral surface of the belt-like prism,
When the angle between a straight line connecting the light emission center of the light emitting element and the optical axis and a straight line extending vertically downward from the optical axis is θ / 2 in the front view of the lamp, θ / 2 from the optical axis in the lens. An angle range region having a central angle of 60 to 105 ° with respect to a straight line extending in the direction of λ and an angle range region having a central angle of 60 to 105 ° with respect to a straight line extending in the direction of θ / 2 + 180 ° from the optical axis. It is set as a region that is not configured as a reflective Fresnel lens,
That at least a part of the region not configured as the reflection type Fresnel lens is configured as a normal Fresnel lens that emits light from the predetermined point forward as light parallel to the optical axis. It is a feature.

  The above-mentioned “light emitting element” means an element-like light source that emits light in a substantially dot-like manner, and the type of the light source is not particularly limited. For example, a light emitting diode or a laser diode can be adopted. is there. Further, the shape and size of the light emitting surface of the light emitting element are not particularly limited.

  The “light emitting element” is arranged so that the light emission center of the light emitting element is shifted laterally from the optical axis, and at that time, the light emitting element is arranged so as to be shifted in either the left or right direction with respect to the optical axis. The specific value of the shift amount is not particularly limited.

  The “ordinary Fresnel lens” means a Fresnel lens configured to deflect and emit light from a light source only by refraction.

  As shown in the above configuration, the vehicular illumination lamp according to the present invention directs light from a light emitting element disposed in the vicinity of the optical axis extending in the front-rear direction of the lamp to the front by a lens disposed on the front side thereof. However, since the lens is configured as a Fresnel lens, the front and rear length of the lamp can be shortened to make it compact.

  The Fresnel lens makes light incident from the predetermined point incident on the annular prism in a manner that refracts light in a direction away from the optical axis on the inner peripheral surface of each annular prism. Since it is configured as a reflection type Fresnel lens that totally reflects forward on the outer peripheral surface of the ring-shaped prism, the light emission center of the light emitting element is located on the optical axis, and the reflection type Fresnel lens is entirely If it is formed over the circumference, the image of the light-emitting surface of the light-emitting element is entirely formed around the intersection of the virtual vertical screen and the optical axis on the virtual vertical screen arranged in front of the lamp due to its optical action. It is formed over the circumference.

  In that respect, in the vehicular illumination lamp according to the present invention, the light emitting element is disposed so that the light emission center is shifted laterally from the optical axis, and the light emission center of the light emitting element is viewed from the front of the lamp. When the angle between the straight line connecting the optical axis and the straight line extending vertically downward from the optical axis is θ, the central angle of the lens is 60 to 105 ° with reference to the straight line extending in the direction of θ / 2 from the optical axis. Since the angle range region having a central angle of 60 to 105 ° with respect to a straight line extending in the direction of θ / 2 + 180 ° from the optical axis is set as a region that is not configured as a reflection type Fresnel lens, On the virtual vertical screen, it is possible to form a substantially fan-shaped light distribution pattern in which the lower end edge extends in a substantially horizontal direction at a central angle close to 180 ° with the intersection point as a center. Therefore, this light distribution pattern can be a light distribution pattern that irradiates far away without irradiating the road surface ahead of the vehicle more than necessary.

  At this time, as an optical action of the reflection type Fresnel lens, a region not configured as the reflection type Fresnel lens is defined as a straight line extending in the direction of θ / 2 and θ, regardless of the value of the angle θ. By setting each of the straight lines extending in the direction of / 2 + 180 ° as an angle range region having a central angle of 60 to 105 °, a substantially fan-shaped arrangement in which the lower end edge extends in a substantially horizontal direction at a central angle close to 180 °. An optical pattern can be formed.

  At that time, when the central angle in each of the two angular range regions approaches 60 °, the central angle of the substantially fan-shaped light distribution pattern becomes larger than 180 °, and the lower end edge thereof faces both the left and right sides. On the other hand, when the central angle approaches 105 °, the central angle of the substantially fan-shaped light distribution pattern becomes slightly smaller than 180 °, and the lower edge thereof is inclined slightly upward toward the left and right sides. Will be.

  Furthermore, in the vehicular illumination lamp according to the present invention, at least a part of the region not configured as the reflective Fresnel lens emits light from the predetermined point forward as light parallel to the optical axis. Since it is configured as a normal Fresnel lens, a spot-like light distribution pattern can be formed on the virtual vertical screen at a position slightly shifted from the center of the substantially fan-shaped light distribution pattern.

  A light distribution pattern suitable for the configuration of the central portion of the high beam light distribution pattern can be obtained by combining the substantially fan-shaped light distribution pattern and the spot-shaped light distribution pattern.

  As described above, according to the present invention, in the vehicular illumination lamp using the light emitting element as a light source, the light distribution pattern suitable for the configuration of the central portion of the high beam light distribution pattern is formed after the compact configuration. be able to.

  In the vehicular illumination lamp according to the present invention, if the shift amount of the light emission center of the light emitting element from the optical axis is set to a small value, the central portion of the substantially fan-shaped light distribution pattern can be brightened. On the other hand, if the shift amount is set to a large value, a substantially fan-shaped dark portion can be formed at the center of the substantially fan-shaped light distribution pattern. When the dark portion is formed in this way, the surrounding area can be illuminated brightly without giving glare to the driver of the preceding vehicle.

  At that time, the amount of displacement of the spot-shaped light distribution pattern from the center of the substantially fan-shaped light distribution pattern to the side also changes in accordance with the shift amount of the light emission center of the light emitting element from the optical axis. When a substantially fan-shaped dark part is formed at the center of the substantially fan-shaped light distribution pattern, a spot-like light distribution pattern is formed at a position adjacent to the side of the dark part. Can be illuminated particularly brightly.

  In the above configuration, if the distance from the light emission center of the light emitting element to the optical axis can be changed, the central portion of the substantially fan-shaped light distribution pattern can be brightened according to the traveling situation, or the substantially fan-shaped light distribution pattern can be changed. A substantially fan-shaped dark part can be formed in the center part.

  In this case, as a specific configuration for enabling the distance from the light emission center of the light emitting element to the optical axis to be changed, the distance is changed by changing the area of the light emitting surface of the light emitting element. Alternatively, the distance may be changed by moving the light emitting surface of the light emitting element in the radial direction with respect to the optical axis.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a vehicular illumination lamp 10 according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG.

  As shown in these drawings, the vehicular illumination lamp 10 according to the present embodiment is a light emitting element that is disposed forward in the vicinity of the left side of the optical axis Ax extending in the front-rear direction of the lamp (in the vicinity of the right side in the front view of the lamp). 12, a lens 14 that is disposed on the front side of the light emitting element 12 and deflects and emits the light from the light emitting element 12 forward, and a metal holder 16 that supports the light emitting element 12 and the lens 14. It has become.

  The vehicular illumination lamp 10 is used together with a head lamp unit (not shown) so as to be incorporated in a lamp body or the like (not shown) so that the optical axis can be adjusted. The optical axis Ax extends in the vehicle front-rear direction. The vehicular lamp 10 is turned on when the headlamp unit is in a high beam state to form a light distribution pattern that forms the center of the high beam light distribution pattern.

  The lens 14 of the vehicular illumination lamp 10 is a disk-shaped member made of a colorless and transparent acrylic resin and having an outer diameter of about φ80 mm. The upper left and lower right of the optical axis Ax (in front view of the lamp) A pair of fan-shaped areas 14A1 and 14A2 located in the upper right and lower left) is configured as a reflective Fresnel lens (which will be described later), and the other pair of fan-shaped areas 14B1 and 14B2 are normal Fresnel lenses. It is configured as a lens (that is, a so-called refractive Fresnel lens).

  In other words, the front surface 14a of the lens 14 is configured such that the portions located in the pair of fan-shaped areas 14A1 and 14A2 are planes orthogonal to the optical axis Ax, while the pair of fan-shaped areas 14B1 and 14B2 A plurality of annular prisms 14pB extending concentrically around the optical axis Ax are formed in the position where the cross-sectional shape along the plane including the optical axis Ax is set in a sawtooth shape.

  Further, the rear surface 14b of the lens 14 is configured such that the portions located in the pair of fan-shaped regions 14B1 and 14B2 are planes orthogonal to the optical axis Ax, while the pair of fan-shaped regions 14A1 and 14A2 A plurality of annular prisms 14pA extending concentrically with the optical axis Ax as the center are formed in the position where the cross-sectional shape along the plane including the optical axis Ax is set in a sawtooth shape.

  This lens 14 reflects light from a predetermined point A on the optical axis Ax located rearward of the lens 14 (specifically, about 30 mm rearward from the rear surface 14b of the lens 14). In the pair of sector regions 14A1 and 14A2 configured as lenses, the light is emitted forward as light parallel to the optical axis Ax, and also in the pair of sector regions 14B1 and 14B2 configured as normal Fresnel lenses, The light is emitted forward as light parallel to the optical axis Ax.

  FIG. 3 is a detailed view of a main part of FIG.

  As shown in the figure, the light-emitting element 12 of the vehicular illumination lamp 10 is a white light-emitting diode and has a light-emitting surface 12a having a horizontally long rectangular shape. The light emitting surface 12a includes four light emitting chips 12a1, 12a2, 12a3, and 12a4 arranged in series on the substrate 12b. At that time, each of these light emitting chips 12a1, 12a2, 12a3, 12a4 has a light emitting surface of a rectangular shape (specifically, a 1 mm square), and is arranged in a state of being in close contact with each other. Is sealed with a thin film.

  The light emitting element 12 has a vertical midpoint at the right edge of the light emitting chip 12a1 positioned at the right end among the four light emitting chips 12a1, 12a2, 12a3, and 12a4 at a predetermined point A on the optical axis Ax. The light emission center (that is, the midpoint in the vertical direction between the second light emitting chip 12a2 and the third light emitting chip 12a3 from the right end) O is located directly beside the optical axis Ax. ing.

  The light emitting element 12 is disposed so as to be movable in the horizontal direction with respect to the holder 16 in a state where the light emitting element 12 is fitted in a groove 16 a extending in the horizontal direction formed in the holder 16. The light emitting element 12 is configured to take a position shown in the figure and a position moved to the left from this position by driving an actuator (not shown) (for example, a stepping motor). That is, the light emitting element 12 is configured to change the horizontal distance from the light emission center O to the optical axis Ax.

  As shown in FIG. 1, among the pair of sector regions 14B1 and 14B2, the sector region 14B1 located at the lower left of the optical axis Ax connects the light emission center O of the light emitting element 12 and the optical axis Ax in the front view of the lamp. When the angle formed by a straight line (that is, a straight line extending horizontally from the optical axis Ax to the left) and a straight line extending vertically downward from the optical axis Ax is θ (that is, θ = 90 °), It is set as an angle range region of the central angle α with reference to a straight line L1 extending in the direction θ / 2 (that is, 45 ° obliquely downward to the left from the optical axis Ax), and on the other hand, located at the upper right of the optical axis Ax. The fan-shaped region 14B2 is an angle range region of the central angle β with reference to a straight line L2 extending in the direction of θ / 2 + 180 ° from the optical axis Ax (that is, 45 ° obliquely upward to the right from the optical axis Ax) in front view of the lamp. Setting It has been. In the present embodiment, the center angle α = 80 ° and the center angle β = 80 ° are set.

  4 is a partial detailed view of FIG. 2, in which FIG. 4 (a) is a detailed view of the IVa portion of FIG. 2, and FIG. 4 (b) is a detailed view of the IVb portion of FIG.

  As shown in the figure, the upper left fan-shaped region 14A1 configured as a reflective Fresnel lens refracts light from a predetermined point A in a direction away from the optical axis Ax on the inner peripheral surface 14pA1 of each annular prism 14pA. After being incident on the annular zone prism 14pA in this manner, the incident light is totally reflected forward on the outer peripheral surface 14pA2 of the annular zone prism 14pA.

  At that time, the light emitted from the light emitting surface 12a of the light emitting element 12 and incident on the arbitrary annular zone prism 14pA in the fan-shaped region 14A1 is refracted by the inner peripheral surface 14pA1 and then totally reflected by the outer peripheral surface 14pA2. Thereafter, the light from the light emitting region located above the light from the predetermined point A incident on the same point (the light in the region indicated by the oblique line extending obliquely in the upper right direction in FIG. 4) is more than the light from the predetermined point A Is also emitted upward from the front surface 14a of the lens 14, while light from the light emitting region located below the light from the predetermined point A (extends obliquely in the upper left direction in FIG. 4). The light in the region indicated by the oblique lines) is emitted downward from the light from the predetermined point A and is emitted forward from the front surface 14a of the lens 14.

  The same applies to the light incident on the other annular prism 14pA. The lower right sector area 14A2 has the same configuration as the upper left sector area 14A1.

  FIG. 5 shows a light distribution pattern formed on a virtual vertical screen arranged at a position 25 m ahead of the lamp by the irradiation light from the vehicular illumination lamp 10 according to the present embodiment, on the light emitting surface 12 a of the light emitting element 12. It is a figure shown correspondingly with arrangement | positioning.

  A light distribution pattern PA1 shown in FIG. 4D is a light distribution pattern formed when the light emitting surface 12a of the light emitting element 12 is located at the position shown in FIG. The light distribution pattern PA2 is a light distribution pattern formed when the light emitting surface 12a of the light emitting element 12 is at the position shown in FIG. 5B, and the light distribution pattern PA3 shown in FIG. This is a light distribution pattern formed when the light emitting surface 12a of the element 12 is at the position shown in FIG.

  FIGS. 4A to 4C are front views showing the light emitting surface 12a of the light emitting element 12. FIG. 4A shows a state in which the right edge of the light emitting surface 12a is located on the optical axis Ax. FIG. 5B shows a state in which the light emitting element 12 moves to the left and the right edge of the light emitting surface 12a is at a position 1 mm to the left of the optical axis Ax. The light emitting element 12 further moves to the left, and the right end edge of the light emitting surface 12a is in a position 2 mm to the left of the optical axis Ax. At that time, the light emission center O of the light emitting element 12 is at a position 2 mm on the left side of the optical axis Ax in the state shown in FIG. 4A, and on the left side of the optical axis Ax in the state shown in FIG. At the position of 3 mm, in the state shown in FIG. 3C, the position is 4 mm on the left side of the optical axis Ax.

  The light distribution pattern PA1 shown in FIG. 4D is formed as a combined light distribution pattern of the light distribution pattern PA1A and the light distribution pattern PA1B. At that time, the light distribution pattern PA1A is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14A1 and 14A2 configured as a reflective Fresnel lens. The light distribution pattern PA1B is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14B1 and 14B2 configured as a normal Fresnel lens.

  The light distribution pattern PA1A is a vanishing point in the front direction of the lamp (which is also an intersection of the virtual vertical screen and the optical axis Ax) with a center angle slightly larger than 180 ° about the center HV, and a lower end edge. It is formed as a substantially fan-shaped light distribution pattern extending in a substantially horizontal direction.

  That is, the light distribution pattern PA1A has its lower end edge slightly lower than the HH line that is a horizontal line passing through HV, on the left and right sides from the position of the VV line that is a vertical line passing through HV. The other part has a substantially circular outer peripheral shape centered on a point located slightly on the right side of the HV. The light distribution pattern PA1A has a hot zone (that is, a high luminous intensity region) HZ1A formed so as to include HV around a point located near the left side of HV.

  In this light distribution pattern PA1A, a plurality of curves formed substantially concentrically with the contour curve are isoluminous curves, and the light distribution pattern PA1A gradually becomes brighter from the outer peripheral edge toward the center. It is shown that. The same applies to the other light distribution patterns described below.

  On the other hand, the light distribution pattern PA1B is formed as a horizontally elongated light distribution pattern extending rightward from the vicinity of HV. This light distribution pattern PA1B has a hot zone HZ1B formed so as to include HV around a point located near the right side of HV.

  The light distribution pattern PA2 shown in FIG. 5E is formed as a combined light distribution pattern of the light distribution pattern PA2A and the light distribution pattern PA2B. At that time, the light distribution pattern PA2A is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14A1 and 14A2 configured as a reflective Fresnel lens. The light distribution pattern PA2B is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14B1 and 14B2 configured as a normal Fresnel lens.

  The light distribution pattern PA2A is formed as a substantially fan-shaped light distribution pattern that is slightly larger than the light distribution pattern PA1A at substantially the same position as the light distribution pattern PA1A. At this time, the light distribution pattern PA2A is similar to the light distribution pattern PA1A in that its lower edge is slightly downward from the vicinity of the V-V line toward the left and right sides slightly below the H-H line and substantially horizontally. Although extending, a substantially fan-shaped dark portion DZ2 is formed at the central portion in the left-right direction so as to surround HV. The hot zone HZ2A of the light distribution pattern PA2A is formed at the peripheral edge so as to surround the dark part DZ2.

  On the other hand, the light distribution pattern PA2B is formed in substantially the same shape as the light distribution pattern PA1B at a position slightly displaced in the right direction with respect to the light distribution pattern PA1B. At this time, the position of the left edge of the light distribution pattern PA2B substantially coincides with the position of the right edge of the dark portion DZ2 of the light distribution pattern PA2A. The hot zone HZ2B of the light distribution pattern PA2B is located near the right side of the dark portion DZ2.

  The light distribution pattern PA3 shown in FIG. 5F is formed as a combined light distribution pattern of the light distribution pattern PA3A and the light distribution pattern PA3B. At that time, the light distribution pattern PA3A is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14A1 and 14A2 configured as a reflective Fresnel lens. The light distribution pattern PA3B is a light distribution pattern formed by light from the light emitting element 12 irradiated forward through a pair of fan-shaped regions 14B1 and 14B2 configured as a normal Fresnel lens.

  The light distribution pattern PA3A is formed as a substantially fan-shaped light distribution pattern that is slightly larger than the light distribution pattern PA2A at substantially the same position as the light distribution pattern PA2A. At this time, this light distribution pattern PA3A has a lower end edge slightly downward from the vicinity of the V-V line toward the left and right sides in a substantially horizontal direction slightly below the H-H line, like the light distribution pattern PA2A. A substantially fan-shaped dark portion DZ3 is formed at the central portion in the left-right direction so as to surround HV. However, the dark portion DZ3 is formed as a dark portion larger than the dark portion DZ2 of the light distribution pattern PA2A. The hot zone HZ3A of the light distribution pattern PA3A is formed in a substantially arc shape so as to surround the dark part DZ3 slightly to the left.

  On the other hand, the light distribution pattern PA3B is formed in substantially the same shape as the light distribution pattern PA2B at a position slightly displaced in the right direction with respect to the light distribution pattern PA2B. At this time, the position of the left edge of the light distribution pattern PA3B substantially coincides with the position of the right edge of the dark portion DZ3 of the light distribution pattern PA3A. The hot zone HZ3B of the light distribution pattern PA3B is located near the right side of the dark portion DZ3.

  A vehicle 2 shown in FIGS. 2E and 2F is a preceding vehicle traveling on the same traveling lane as the host vehicle on the road surface in front of the vehicle.

  When the preceding vehicle 2 does not exist on the road surface in front of the vehicle, the distant area of the road surface in front of the vehicle can be illuminated brightly together with the upper space by adopting the light distribution pattern PA1 shown in FIG.

  On the other hand, when the preceding vehicle 2 is located in a distant area on the road surface ahead of the vehicle, the preceding vehicle 2 can be positioned in the substantially fan-shaped dark portion DZ2 by adopting PA2 shown in FIG. Thus, the surroundings can be illuminated brightly without giving glare to the driver of the preceding vehicle 2.

  Further, when the preceding vehicle 2 is located in a relatively short distance area on the road surface in front of the vehicle, by adopting PA3 shown in FIG. 5 (f), the preceding vehicle is placed in the relatively large fan-shaped dark portion DZ3. 2 can be positioned, so that the surrounding area can be illuminated brightly over a relatively wide range without giving glare to the driver of the preceding vehicle 2.

  FIG. 6 is a diagram showing the three light distribution patterns PA1, PA2, and PA3 shown in FIG. 5 as a result of a ray tracing simulation.

  As shown in the figure, each of these three light distribution patterns PA1, PA2, and PA3 is formed as a light distribution pattern constituting the center of the high beam light distribution pattern PH indicated by a two-dot chain line. Yes.

  FIG. 7 is a diagram for explaining the formation of the light distribution pattern PA1A formed by the irradiation light from the vehicular illumination lamp 10 according to the present embodiment.

  FIG. 4A is a front view showing the light emitting surface 12a of the light emitting element 12 in a state where the reflective Fresnel lens 14o is equally divided into 12 sectors S1 to S12 with the optical axis Ax as the center. At this time, the reflective Fresnel lens 14o has a configuration in which a plurality of annular prisms 14pA formed in each of the fan-shaped regions 14A1 and 14A2 in the lens 14 are formed over the entire circumference around the optical axis Ax. Yes.

  FIG. 6B shows the 12 light distribution patterns formed by the light emitted from each of the 12 sectors S1 to S12 in the reflective Fresnel lens 14o, which is the original light distribution pattern PA1o of the light distribution pattern PA1A. It is a figure shown with the elements P1-P12, Comprising: It is the figure obtained as a result of having performed the simulation of ray tracing.

  As shown in FIG. 5B, as the positions of the sectors S1 to S12 change, the light distribution pattern elements P1 to P12 change their shapes and their positions around HV. It is formed so as to rotate twice around HV while gradually changing. At that time, the upper six light distribution pattern elements P1 to P6 are formed in a vertically symmetrical positional relationship with the lower six light distribution pattern elements P12 to P7.

  All of these light distribution pattern elements P1 to P12 are formed in a substantially wedge shape, and the tip portion thereof is formed so as to hang on HV, and the tip portion has the highest luminous intensity.

  Among these light distribution pattern elements P1 to P12, light distribution pattern elements P1 formed by light emitted from three sectors S1, S2, S3 located on the upper left of the optical axis Ax (upper right in the lamp front view), The light distribution pattern elements P7, P8, and P9 formed by the light emitted from the three sectors S7, S8, and S9 located at the lower right of P2 and P3 and the optical axis Ax extend from HV upward. It is formed. On the other hand, the light distribution pattern elements P4, P5, P6 formed by the light emitted from the three sectors S4, S5, S6 located on the upper right side of the optical axis Ax and the three sectors S10, S11 located on the lower left side of the optical axis Ax. The light distribution pattern elements P10, P11, and P12 formed by the light emitted from S12 are formed so as to expand downward from HV.

  A light distribution pattern PA1o is formed as a light distribution pattern in which these twelve light distribution pattern elements P1 to P12 are superimposed. This light distribution pattern PA1o is formed as a substantially circular light distribution pattern centered on a point located slightly to the right of HV, and its MAX luminous intensity position is located near the left side of HV. It has a luminous intensity distribution that proportionally distributes the MAX luminous intensity position and the outer shape.

  The lens 14 of the vehicular illumination lamp 10 according to the present embodiment includes a sector S5 located at the upper right of the optical axis Ax and the majority of the two sectors S4 and S6 adjacent thereto and the optical axis with respect to the reflective Fresnel lens 14o. Since most of the sector S11 located at the lower left of Ax and the two sectors S10 and S12 adjacent to the sector S11 are set as fan-shaped regions 14B2 and 14B1 that are not configured as reflective Fresnel lenses, the light distribution pattern element P5 and Most of the light distribution pattern elements P4 and P6 and most of the light distribution pattern elements P11 and the light distribution pattern elements P10 and P12 are not obtained.

  That is, the light distribution pattern PA1A formed by the irradiation light from the vehicular illumination lamp 10 according to the present embodiment has the light distribution pattern elements P5 and P11 and the light distribution pattern elements P4 and P6, with respect to the light distribution pattern PA1o. As shown in FIG. 5 (d) or FIG. 6 (d), most of P10 and P12 are missing, so that the lower end edge has a central angle slightly larger than 180 ° with HV as the center. Has a substantially fan-shaped outer shape extending in a substantially horizontal direction, and a light distribution pattern having a light intensity distribution that gradually darkens from the vicinity of HV toward the surroundings. At this time, the outer shape of the light distribution pattern PA1o and the lateral deviation of the MAX luminous intensity position are also reflected in the light distribution pattern PA1A as they are.

  The light distribution pattern PA1A is formed in a state where the right edge of the light emitting surface 12a is positioned on the optical axis Ax. If the right edge of the light emitting surface 12a moves away from the optical axis Ax in the left direction, the light distribution pattern PA1A is configured. The light distribution pattern elements P1, P2, P3, P7, P8, and P9 and a part of the light distribution pattern elements P4, P6, P10, and P12 are displaced in the direction away from HV, and the tip ends thereof are HV. Therefore, the light distribution pattern PA2A is formed as a substantially fan-shaped light distribution pattern that is slightly larger than the light distribution pattern PA1A, and has a substantially fan-shaped dark portion DZ2 surrounding HV.

  When the right end edge of the light emitting surface 12a is further leftward from the optical axis Ax, the light distribution pattern elements P1, P2, P3, P7, P8, P9 and the light distribution pattern elements P4, P6, P10, which form the light emitting surface 12a, A part of P12 is displaced further away from HV, and its tip is further away from HV. Therefore, like the light distribution pattern PA3A, a substantially fan-shaped distribution that is slightly larger than the light distribution pattern PA2A. A substantially fan-shaped dark portion DZ3 that is formed as an optical pattern and surrounds HV is formed larger than the dark portion DZ2.

  On the other hand, the light distribution pattern PA1B is formed by the light emitted from the pair of fan-shaped regions 14B1 and 14B2 configured as a normal Fresnel lens. Therefore, the light distribution pattern PA1B is a horizontally elongated substantially rectangular shape in which the horizontally elongated light emitting surface 12a is reversely projected. The light distribution pattern is as follows.

  The light distribution pattern PA2B formed when the light emitting surface 12a is moved in the left direction has substantially the same shape as the light distribution pattern PA1B, and the light distribution pattern PA1B is displaced in the right direction by the amount of movement of the light emitting surface 12a. The light distribution pattern PA3B formed when the light emitting surface 12a is further moved to the left is substantially the same shape as the light distribution pattern PA2B, and this light distribution pattern PA2B is further formed on the light emitting surface 12a. The light distribution pattern is displaced rightward by the amount of movement.

  At this time, the amount of displacement of the light distribution patterns PA2B and PA3B due to the movement of the light emitting surface 12a is substantially equal to the amount of change in the radius of the dark portions DZ2 and DZ3 of the light distribution patterns PA2A and PA3A formed by the movement of the light emitting surface 12a. Value.

  As described above in detail, the vehicular illumination lamp 10 according to the present embodiment uses the lens 14 disposed on the front side of the light from the light emitting element 12 disposed in the vicinity of the optical axis Ax extending in the lamp front-rear direction. Therefore, the pair of fan-shaped regions 14A1 and 14A2 located at the upper left and lower right of the optical axis Ax in the lens 14 is configured as a reflection type Fresnel lens. Since the other pair of fan-shaped regions 14B1 and 14B2 are configured as normal Fresnel lenses, the front and rear lengths of the lamps can be shortened to make them compact.

  In addition, the pair of fan-shaped regions 14A1 and 14A2 configured as the reflection type Fresnel lenses transmit light from a predetermined point A on the optical axis Ax located on the rear side thereof to the inner peripheral surface of each annular prism 14pA. After being incident on the annular prism 14pA in a manner that refracts away from the optical axis Ax at 14pA1, the incident light is totally reflected forward on the outer peripheral surface 14pA2 of the annular prism 14pA. Therefore, if the light emission center O of the light emitting element 12 is located on the optical axis Ax and the reflection type Fresnel lens is formed over the entire circumference, the light emitting surface of the light emitting element 12 is caused by the optical action. The image of 12a is formed over the entire circumference around HV on the virtual vertical screen arranged in front of the lamp.

  In that respect, in the vehicular illumination lamp 10 according to the present embodiment, the light emitting element 12 is arranged so that the light emission center O is shifted to the left side from the optical axis Ax, and the light emission is seen in the front view of the lamp. When the angle between the straight line connecting the light emission center O of the element 12 and the optical axis Ax and the straight line extending vertically downward from the optical axis Ax is θ (that is, θ = 90 °), the optical axis Ax to θ in the lens 14 / 2 (that is, 45 ° from the optical axis Ax to the left obliquely downward direction) with reference to the straight line L1, the angle range region (that is, the sector region 14B1) of the central angle α (= 80 °) and the optical axis θ / A normal Fresnel lens has an angle range region (that is, a sector region 14B2) having a central angle β (= 80 °) with reference to a straight line L2 extending in the direction of 2 + 180 ° (that is, 45 ° obliquely upward from the optical axis Ax). age Since it is configured (that is, set as a region not configured as a reflection type Fresnel lens), the light emitted from the sector regions 14A1 and 14A2 configured as a reflection type Fresnel lens causes H on the virtual vertical screen. A substantially fan-shaped light distribution pattern PA1A (or light distribution pattern PA2A, PA3A) having a central angle slightly larger than 180 ° with the −V point as a center and a lower end edge extending in a substantially horizontal direction is formed. Can do. Therefore, this light distribution pattern PA1A (or light distribution pattern PA2A, PA3A) can be a light distribution pattern that irradiates far away without irradiating the road surface ahead of the vehicle more than necessary.

  In the vehicular illumination lamp 10 according to the present embodiment, the pair of fan-shaped regions 14B1 and 14B2 that are not configured as reflective Fresnel lenses are configured as ordinary Fresnel lenses. As a reverse image of the light emitting surface 12a of the light emitting element 12 arranged so that the light emission center O is shifted to the left side from the optical axis Ax by the light emitted from the regions 14B1 and 14B2, a substantially fan-shaped arrangement is provided on the virtual vertical screen. A spot-like light distribution pattern light distribution pattern PA1B (or light distribution patterns PA2B, PA2B) can be formed at a position slightly shifted to the right side from the center of the light pattern.

  Then, by combining the substantially fan-shaped light distribution pattern light distribution pattern PA1A (or light distribution pattern PA2A, PA3A) and the spot-shaped light distribution pattern PA1B (or light distribution pattern PA2B, PA3B), the high-beam light distribution pattern PH. It is possible to obtain a light distribution pattern PA1 (or light distribution pattern PA2, PA3) suitable for the configuration of the central portion of the light source.

  As described above, according to the present embodiment, in the vehicular illumination lamp 10 using the light emitting element 12 as a light source, the light distribution suitable for the configuration of the central portion of the high beam light distribution pattern PH after having a compact configuration. A pattern PA1 (or a light distribution pattern PA2, PA3) can be formed.

  In the vehicular lamp 10 according to the present embodiment, if the amount of shift from the optical axis Ax of the light emission center O of the light emitting element 12 to the left side is set to a small value, the central portion of the substantially fan-shaped light distribution pattern PA1A is set. On the other hand, if the shift amount is set to a large value, a substantially fan-shaped dark portion DZ2 is formed at the center of the substantially fan-shaped light distribution pattern PA2A, and the peripheral portion of the dark portion DZ2 is lightened. If the shift amount is set to a larger value, a substantially fan-shaped dark portion DZ3 can be formed at the center of the substantially fan-shaped light distribution pattern PA3A, and the peripheral portion of the dark portion DZ3 can be brightened. .

  At this time, the spot-shaped light distribution pattern PA1B (or light distribution pattern PA2B, PA3B) is substantially fan-shaped light distribution pattern PA1A (or light distribution pattern PA2A) according to the shift amount from the optical axis of the light emission center of the light emitting element. , PA3A), the amount of displacement from the center to the side also changes. When the substantially fan-shaped dark portions DZ2 and DZ3 are formed in the central portions of the substantially fan-shaped light distribution patterns AN2 and PA3A, a spot-like light distribution pattern PA2B is formed at a position adjacent to the sides of the dark portions DZ2 and DZ3. PA3B is formed, so that the sides of the dark portions DZ2 and DZ3 can be illuminated particularly brightly.

  And thereby, the surroundings are brightly irradiated without giving glare to the driver of the preceding vehicle 2 according to the presence or absence of the preceding vehicle 2 and according to the traveling position of the preceding vehicle 2. Is possible.

  In particular, the vehicular lamp 10 according to the present embodiment is configured so that the distance from the light emission center O to the optical axis Ax can be changed by moving the light emitting element 12 to the left side. Depending on the situation, a light distribution pattern PA1 having a bright hot zone HZ1A in the center is formed, a light distribution pattern PA2 having a relatively small dark part DZ2 is formed in the center, or a relatively large dark part DZ3 in the center. Can be formed.

  In addition, the vehicular illumination lamp 10 according to the present embodiment has a configuration in which the light emitting element 12 is arranged so that the light emitting surface 12a does not overlap the optical axis Ax when viewed from the front of the lamp. The light distribution patterns PA1A, PA2A, and PA3A can be formed such that the central portions of the light distribution patterns PA1A, PA2A, and PA3A do not protrude downward from the lower end edges of the light distribution patterns PA1A, PA2A, and PA3A. As a result, it is possible to reliably prevent the road surface in front of the vehicle from being illuminated more brightly than necessary.

  Further, in the vehicular illumination lamp 10 according to the present embodiment, since the light emitting element 12 has a light emitting surface 12a having a horizontally long rectangular shape, the spot light distribution patterns PA1B, PA2B, and PA3B are formed in a horizontally long substantially rectangular shape. As a result, it is possible to improve the far-right visibility without irradiating the road surface ahead of the vehicle more brightly than necessary.

  Note that the vehicle illumination lamp 10 according to the above embodiment is provided with a pair of left and right vehicles at the front end portion of the vehicle together with the headlamp unit. As a result, a pair of light distribution patterns PA1, PA2, and PA3 can be formed symmetrically. Then, by combining each of the left and right symmetrical light distribution patterns PA1, PA2, and PA3 formed by the irradiation light from the pair of left and right vehicular illumination lamps 10, a symmetrical light distribution pattern with respect to the VV line is obtained. Can be formed respectively.

  In the said embodiment, although demonstrated that each light emitting chip 12a1, 12a2, 12a3, 12a4 of the light emitting element 12 had a square light emission surface, what has a light emission surface of shapes other than this is used. But of course it is possible.

  In the above embodiment, the center angles α and β of the pair of fan-shaped regions 14B1 and 14B2 configured as a normal Fresnel lens have been described as being 80 °, but an angle of 60 to 105 °. If it is within the range, substantially the same effect as the above embodiment can be obtained. At that time, when the central angles α and β approach 60 °, the central angles of the substantially fan-shaped light distribution patterns PA1A, PA2A, and PA3A increase, and the lower end edge of the VV line extends from the vicinity of the VV line toward the left and right sides. When the downward inclination angle increases, on the other hand, when the central angles α, β approach 105 °, the central angles of the substantially fan-shaped light distribution patterns PA1A, PA2A, PA3A decrease, and from the vicinity of the VV line at the lower end edge thereof. The downward inclination angle toward the left and right sides becomes smaller.

  In the above embodiment, the entire area of the pair of fan-shaped areas 14B1 and 14B2 has been described as being configured as a normal Fresnel lens. However, a part of the area is configured as a through lens section or the like. It is also possible to do.

  In the above embodiment, the pair of fan-shaped regions 14B1 and 14B2 are described as being configured as a normal Fresnel lens by forming a plurality of annular prisms 14pB on the front surface 14a of the lens 14. However, it may be configured as a normal Fresnel lens by forming a plurality of annular prisms 14pB on the rear surface 14b of the lens 14.

  Further, in the above embodiment, the horizontal distance from the light emission center O to the optical axis Ax is changed by moving the light emitting element 12 to the left side. However, as shown in the following modification example It is also possible to adopt a configuration.

  FIG. 8 is a view similar to FIG. 5, showing a main part of the vehicular illumination lamp according to a modification of the embodiment together with its operation.

  As shown in FIGS. 4A to 4C, in the present modification, the light emitting element 12 is not configured to move to the left as in the above embodiment, and the light emitting surface 12a The area changes.

  That is, the light emitting element 12 of this modification has a mode in which all the four light emitting chips 12a1, 12a2, 12a3, and 12a4 emit light as shown in FIG. The three light emitting chips 12a2, 12a3, and 12a4 except the light emitting chip 12a1 can emit light, and the left two light emitting chips 12a3 and 12a4 can emit light as shown in FIG. It has become.

  As a result, the light emitting element 12 is configured to change the horizontal distance from the light emission center O to the optical axis Ax. That is, at the position shown in FIG. 9A, the light emission center O is located at the midpoint in the vertical direction between the second light emitting chip 12a2 and the third light emitting chip 12a3 from the right. ), The light emission center O is located at the center of the third light emitting chip 12a3 from the right, and at the position shown in FIG. 5C, the third light emitting chip 12a3 and the fourth light emitting chip from the right. The light emission center O is located at the middle point in the vertical direction between the terminal 12a4 and the center.

  A light distribution pattern PB1 shown in FIG. 4D is a light distribution pattern formed when the light emitting surface 12a of the light emitting element 12 is in the light emitting state shown in FIG.

  This light distribution pattern PB1 is the same light distribution pattern as the light distribution pattern PA1 of the above embodiment. That is, the light distribution pattern PB1 is formed as a combined light distribution pattern of a light distribution pattern PB1A that is exactly the same as the light distribution pattern PA1A and a light distribution pattern PB1B that is exactly the same as the light distribution pattern PA1B.

  A light distribution pattern PB2 shown in FIG. 5E is a light distribution pattern formed when the light emitting surface 12a of the light emitting element 12 is in the light emitting state shown in FIG. 5B, and is distributed with the light distribution pattern PB2A. It is formed as a combined light distribution pattern with the light pattern PB2B.

  Similarly to the light distribution pattern PB1A, the light distribution pattern PB2A is formed as a substantially fan-shaped light distribution pattern having a central angle slightly larger than 180 ° with the center at HV and a lower end edge extending in a substantially horizontal direction. .

  However, a substantially fan-shaped dark portion DZ2 is formed so as to surround HV at the center in the left-right direction of the lower end edge of the light distribution pattern PB2A. This is because the right edge of the light emitting surface 12a is slightly displaced to the left from the optical axis Ax. The light distribution pattern PB2A is a light distribution pattern that is slightly darker overall than the light distribution pattern PB1A. This is because the light distribution pattern PB1A is formed by the light emission of the four light emitting chips 12a1, 12a2, 12a3, and 12a4, whereas the light distribution pattern PB2A is formed by the light emission of the three light emitting chips 12a2, 12a3, and 12a4. Is due to

  On the other hand, the light distribution pattern PB2B is formed on the right side of the dark part DZ2 in a shape slightly narrower in the left-right direction than the light distribution pattern PB1B. This light distribution pattern PB2B is also a light distribution pattern that is slightly darker overall than the light distribution pattern PB1B.

  A light distribution pattern PB3 shown in FIG. 5F is a light distribution pattern formed when the light emitting surface 12a of the light emitting element 12 is in the light emitting state shown in FIG. 5C, and is distributed with the light distribution pattern PB3A. It is formed as a combined light distribution pattern with the light pattern PB3B.

  Similar to the light distribution pattern PB2A, the light distribution pattern PB3A is formed as a substantially fan-shaped light distribution pattern having a central angle slightly larger than 180 ° with the center at HV and a lower end edge extending in a substantially horizontal direction. A substantially fan-shaped dark portion DZ3 is formed at the central portion of the lower end edge in the left-right direction so as to surround HV.

  However, the light distribution pattern PB3A has a dark portion DZ3 whose shape is larger than the dark portion DZ2 of the light distribution pattern PB2A, and is a light distribution pattern that is slightly darker overall than the light distribution pattern PB2A. Yes. This is because the upper end edge of the light emitting surface 12a is displaced further leftward from the optical axis Ax, and the light distribution pattern PB3A is formed by light emission of the two light emitting chips 12a3 and 12a4.

  On the other hand, the light distribution pattern PB3B is formed on the right side of the dark part DZ3 in a shape slightly narrower in the left-right direction than the light distribution pattern PB2B. This light distribution pattern PB3B is also a light distribution pattern that is slightly darker overall than the light distribution pattern PB2B.

  By adopting the configuration of this modification, it is possible to obtain substantially the same operational effects as in the case of the above embodiment.

  At this time, in the present modification, the brightness of the light distribution patterns PB2 and PB3 is darker than the light distribution patterns PA2 and PA3 of the above embodiment, but the actuator for moving the light emitting element 12 in the horizontal direction. The above-described effects can be obtained without using a lamp, thereby simplifying the configuration of the lamp.

  In the embodiment and the modification described above, the case where the value of the angle θ is θ = 90 ° has been described. However, even when other angles are set, the pair of sector regions 14B1 and 14B2 are set to θ / 2. By setting the angle range region with a central angle of 60 to 105 ° on the basis of each of the straight line extending in the direction of θ and the straight line extending in the direction of θ / 2 + 180 °, it is close to 180 ° as in the above-described embodiment and the modification. A substantially fan-shaped light distribution pattern having a lower end edge extending in a substantially horizontal direction at the central angle can be formed.

  In addition, the numerical value shown as a specification in the said embodiment and modification is only an example, and of course, you may set these to a different value suitably.

Front view showing a vehicular illumination lamp according to an embodiment of the present invention II-II sectional view of FIG. Detailed view of the main part of FIG. 2A is a partial detailed view of FIG. 2, in which FIG. 2A is a detailed view of a portion IVa of FIG. 2, and FIG. The figure which shows the light distribution pattern formed on the virtual vertical screen arrange | positioned in the position of 25 m ahead of a lamp | ramp by the irradiated light from the said vehicle lighting lamp corresponding to arrangement | positioning of the light emission surface of a light emitting element, and is shown transparently. The figure which shows the three light distribution patterns shown in FIG. 5 as a result of having performed the ray tracing simulation. The figure for demonstrating formation of the light distribution pattern formed with the irradiation light from the said vehicle lighting device The figure similar to FIG. 5 which shows the principal part of the vehicle lighting device which concerns on the modification of the said embodiment with the effect | action.

Explanation of symbols

2 Front-running vehicle 10 Lighting lamp for vehicle 12 Light-emitting element 12a Light-emitting surface 12a1, 12a2, 12a3, 12a4 Light-emitting chip 12b Substrate 14 Lens 14A1, 14A2 Fan-shaped region (region configured as a reflective Fresnel lens)
14B1, 14B2 Fan-shaped area (area not configured as a reflective Fresnel lens (area configured as a normal Fresnel lens))
14a Front side surface 14b Back side surface 14o Reflective Fresnel lens 14pA, 14pB Ring-shaped prism 14pA1 Inner peripheral surface 14pA2 Outer peripheral surface 16 Holder 16a Groove A Predetermined point Ax Optical axis DZ2, DZ3 Dark part HZ1A, HZ2H, Z1 HZ3B Hot zone L1, L2 Straight line O Emission center PA1, PA2, PA3, PB1, PB2, PB3 Combined light distribution pattern PA1o Original light distribution pattern PA1A, PA2A, PA3A, PB1A, PB2A, PB3A Abbreviated fan-shaped light distribution pattern PA1B, PA2B, PA3B, PB1B, PB2B, PB3B Spot-like light distribution pattern PH High beam light distribution pattern P1 to P12 Light distribution pattern elements S1 to S12 Sector α, β Center angle

Claims (3)

A vehicle comprising: a light emitting element disposed in the vicinity of an optical axis extending in the front-rear direction of the lamp; and a lens disposed in front of the light emitting element and deflecting and emitting light from the light emitting element forward. In lighting fixtures,
The light emitting element is disposed so as to shift the light emission center of the light emitting element laterally from the optical axis;
The lens is formed with a plurality of annular prisms extending concentrically around the optical axis in a state where a cross-sectional shape along a plane including the optical axis is set in a sawtooth shape on a rear surface of the lens. It is configured as a Fresnel lens that emits light from a predetermined point on the optical axis located on the rear side of the lens toward the front as light parallel to the optical axis,
The Fresnel lens causes the light from the predetermined point to enter the annular prism in a manner that refracts the light from the optical axis on the inner peripheral surface of each annular prism, and then causes the incident light to enter the annular prism. It is configured as a reflective Fresnel lens that totally reflects forward on the outer peripheral surface of the belt-like prism,
When the angle between a straight line connecting the light emission center of the light emitting element and the optical axis and a straight line extending vertically downward from the optical axis is θ / 2 in the front view of the lamp, θ / 2 from the optical axis in the lens. An angle range region having a central angle of 60 to 105 ° with respect to a straight line extending in the direction of λ and an angle range region having a central angle of 60 to 105 ° with respect to a straight line extending in the direction of θ / 2 + 180 ° from the optical axis. It is set as a region that is not configured as a reflective Fresnel lens,
That at least a part of the region not configured as the reflection type Fresnel lens is configured as a normal Fresnel lens that emits light from the predetermined point forward as light parallel to the optical axis. A vehicular illumination lamp characterized by the above.   The vehicular illumination lamp according to claim 1, wherein the light emitting element has a horizontally long light emitting surface.   3. The vehicular illumination lamp according to claim 1, wherein a distance from the light emission center of the light emitting element to the optical axis can be changed. 4.

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