JP2012160356A - Vehicular lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lamp capable of utilizing light irradiated upward from a light source and light irradiated downward from the light source and improving luminous flux utilization efficiency.SOLUTION: The vehicular lamp 1 includes a bulb 40, a first reflection surface 11, a second reflection surface 21, a third reflection surface 31, a first projection lens 50, and a second projection lens 60. A first focal point F1 of the first reflection surface 11 is arranged on the bulb 40 and a second focal point F2 of the first reflection surface 11 is arranged in front of the bulb 40. A rear side focal point F5 of the first projection lens 50 is arranged at the first focal point F1 of the first reflection surface 11. A first focal point F3 of the second reflection surface 21 is arranged on the bulb 40, and a second focal point F4 of the second reflection surface 21 is arranged at an upper part of the first focal point F1 of the first reflection surface 11. The third reflection surface 31 is arranged at an upper part of the first focal point F1 of the first reflection surface 11, and a virtual image V4 of the second focal point F4 of the second reflection surface 21 is formed with the third reflection surface 31. A rear side focal point F6 of the second projection lens 60 is arranged on the virtual image V4.

Description

  The present invention relates to a vehicular lamp.

  In a conventional projector-type vehicle lamp, the upper edge of the shade is arranged near the focal point of the projection lens, the bulb is arranged near the first focal point of the ellipsoidal reflector, and the second focal point of the ellipsoidal reflector is the projection lens. It arrange | positions in the focus vicinity (for example, refer patent document 1). Light emitted from the bulb is reflected forward by the ellipsoidal reflector, a part of the reflected light is shielded by the shade, and reflected light that is not shielded is projected forward by the projection lens. Light is blocked by the shade, and the shape of the upper edge of the shade is projected forward as a cutoff line (bright / dark boundary line), thereby forming a low beam light distribution.

JP 2010-218689 A JP-A-6-314503

However, most of the light reflected by the lower half of the ellipsoidal reflector is shielded by the shade. For this reason, the luminous flux utilization rate is reduced, and bright illumination cannot be obtained for the light emission intensity and power consumption of the light source.
Therefore, the problem to be solved by the present invention is to improve the luminous flux utilization efficiency.

The vehicular lamp according to the present invention is:
A light source;
An ellipsoidal type that surrounds the top, left, right and back of the light source apart from the light source, sets a first focal point at or near the light source, and sets a second focal point in front of the light source A reflective surface;
A first projection lens disposed in front of the light source and setting a rear focal point at or near the second focal point of the first reflecting surface;
Surrounding the lower, left, right and rear of the light source away from the light source, setting a first focal point at or near the light source, and a second focal point above the second focal point of the first reflecting surface An ellipsoidal second reflecting surface for setting
A third reflecting surface that is arranged to face downward above the second focal point of the first reflecting surface and forms a virtual image of the second focal point of the second reflecting surface;
A second projection lens disposed on the first projection lens and configured to set a rear focal point at or near the virtual image formed by the third reflecting surface.

The vehicular lamp according to the present invention is:
A light source;
A first reflective surface that is spaced apart from the light source, surrounds the top, left, right, and back of the light source, reflects light from the light source, and collects the light at a location in front of the light source;
A first projection lens that is disposed in front of the spot condensed by the first reflecting surface and projects the light collected by the first reflecting surface forward;
The first light source is separated from the light source, surrounds the lower, left, right, and rear of the light source, reflects the light from the light source, and collects the light at a location above the location that is collected by the first reflecting surface. Two reflective surfaces;
A third reflecting surface that is disposed to face downward above the portion that is collected by the first reflecting surface, and that reflects the light collected by the second reflecting surface;
A second projection lens that is disposed on the first projection lens and projects forward the light reflected by the third reflecting surface.

  Preferably, the first reflective surface is disposed above a lamp optical axis extending in the front-rear direction, the first reflective surface has a lower edge along a horizontal plane passing through the lamp optical axis, and the second reflective surface Is arranged below the lamp optical axis, and the second reflecting surface has an upper edge along a horizontal plane passing through the lamp optical axis.

  Preferably, the vehicular lamp is disposed along the lower edge of the first reflecting surface and the upper edge of the second reflecting surface inside the first reflecting surface and the second reflecting surface. Is further provided.

  Preferably, the light-shielding portion is provided in a strip shape having a width in the vertical direction.

Preferably, the first projection lens has an entrance surface on the rear side, and a convex exit surface on the front side,
The incident surface of the first projection lens extends in the vertical direction and has a plurality of convex cylindrical surfaces arranged on the left and right.

Preferably, the second projection lens has an incident surface on the rear side and a convex exit surface on the front side,
The incident surface of the second projection lens extends in the vertical direction and has a plurality of convex cylindrical surfaces arranged on the left and right.

  Preferably, the first projection lens and the second projection lens are integrated.

  According to the present invention, the light emitted upward from the light source is reflected toward the front lower side by the first reflecting surface, and the reflected light is projected forward by the first projection lens. On the other hand, the light emitted downward from the light source is reflected upward and forward by the second reflecting surface, and the reflected light is reflected downward and forward. Therefore, both the light emitted upward from the light source and the light emitted downward from the light source are used for illumination, and the light utilization efficiency is improved.

1 is a perspective view of a vehicular lamp according to an embodiment of the present invention. It is a vertical sectional view of the vehicular lamp according to the embodiment. It is a front view of the vehicle lamp which concerns on the same embodiment. It is a top view of the vehicle lamp which concerns on the same embodiment. It is an isoillumination diagram which showed the light distribution characteristic of the vehicle lamp which concerns on the same embodiment.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, the embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

  In the following description, “upper”, “lower”, “front”, “rear”, “left”, “right” are “upper”, “lower”, “lower” of the vehicle equipped with the vehicle lamp 1, respectively “Front”, “Back”, “Left”, “Right”. Accordingly, when looking from the rear to the front of the vehicle (from the viewpoint of the driver), “left” and “right” are determined.

  FIG. 1 is a perspective view of a vehicular lamp 1. FIG. 2 is a vertical sectional view of the vehicular lamp 1. The cross section shown in FIG. 2 passes through the optical axis Ax1 of the lamp extending in the front-rear direction and is orthogonal to the horizontal plane.

  The vehicular lamp 1 is used as a low beam headlamp or an auxiliary headlamp (fog lamp). The vehicular lamp 1 includes a first reflector 10, a second reflector 20, a third reflector 30, a bulb 40, a first projection lens 50, a second projection lens 60, a light shielding unit 70, and the like.

  The first reflector 10 is provided in a half dome shape, and the second reflector 20 is also provided in a half dome shape. The first reflector 10 and the second reflector 20 are arranged so that the inner concave surface of the first reflector 10 and the inner concave surface of the second reflector 20 face each other, and the first reflector 10 and the second reflector 20 are substantially symmetrical in the vertical direction. 20 are combined. The assembly of the first reflector 10 and the second reflector 20 is provided in a substantially bowl shape. The opening of the housing formed by the assembly of the first reflector 10 and the second reflector 20 faces forward.

  An ellipsoidal first reflecting surface 11 is formed on the inner concave surface of the first reflector 10. The first reflecting surface 11 has a long axis of an elliptic curve extending in the front-rear direction aligned with the optical axis Ax1, and the elliptic curve centered on the long axis (the eccentricity of the elliptic curve is constant, or the ellipse is It is a spheroid obtained by rotating (with changing the eccentricity of the curve), a flat ellipsoid obtained by crushing the spheroid up and down (or left and right), or a free-form surface based on these. Moreover, the 1st reflective surface 11 may be a compound ellipsoid combining two or more of these spheroidal surfaces, flat elliptical surfaces, and free-form surfaces.

  The range where the first reflecting surface 11 is formed is above the horizontal plane passing through the optical axis Ax1. The first reflecting surface 11 is disposed so as to penetrate the vertical plane passing through the optical axis Ax1 to the left and right. The lower edge 12 of the first reflecting surface 11 is along a horizontal plane passing through the optical axis Ax1, and is curved in a bow shape so as to surround the left and right and the back of the first focal point F1. The front edge 13 of the first reflecting surface 11 is curved in a bow shape so as to surround the upper and left sides of the optical axis Ax1.

  Since the first reflective surface 11 is formed into an elliptical surface, the first focal point F1 is set inside the first reflective surface 11 by the first reflective surface 11, and the second focal point F2 is first by the first reflective surface 11. It is set in front of the focal point F1.

  An elliptical second reflecting surface 21 is formed on the concave surface inside the second reflector 20. The second reflecting surface 21 has an elliptic curve centered on the major axis Ax2 of the elliptic curve inclined upward with respect to the optical axis Ax1 (the eccentricity of the elliptic curve is constant or the eccentricity of the elliptic curve is A rotating ellipsoid obtained by rotating the surface of the rotating ellipse, a flat ellipsoid obtained by crushing the rotating ellipsoid vertically (or left and right), or a free-form surface based on these. Moreover, the 2nd reflective surface 21 may be a compound ellipsoid combining two or more of these spheroidal surfaces, flat elliptical surfaces, and free-form surfaces.

  Since the second reflective surface 21 is formed into an elliptical surface, the first focal point F3 is set inside the second reflective surface 21 by the second reflective surface 21, and the second focal point F4 is first defined by the second reflective surface 21. It is set in front of the focal point F3. The first focal point F3 of the second reflective surface 21 overlaps the first focal point F1 of the first reflective surface 11, or these focal points F1 and F3 are arranged close to each other. The second focal point F4 of the second reflecting surface 21 is located above the second focal point F2 of the first reflecting surface 11.

  The range in which the second reflecting surface 21 is formed is below the horizontal plane passing through the optical axis Ax1. The second reflecting surface 21 is disposed so as to penetrate the vertical plane passing through the optical axis Ax1 to the left and right. The upper edge 22 of the second reflecting surface 21 is along a horizontal plane passing through the optical axis Ax1, and is curved in a bow shape so as to surround the left and right and the back of the first focal point F3. The front edge 23 of the second reflecting surface 21 is curved in a bow shape so as to surround the lower and left and right sides of the optical axis Ax.

  The valve 40 is attached to the first reflector 10 and the second reflector 20. Specifically, a mounting hole 29 is formed in the rear ends of the first reflector 10 and the second reflector 20 so as to penetrate in the front-rear direction, and the valve 40 is inserted into the mounting hole 29 so that the valve 40 is connected to the first reflector 10. The valve 40 protrudes to the inside of the reflector 10 and the second reflector 20 and is fixed to the first reflector 10 and the second reflector 20. In addition, the valve 40 penetrates one or both of the first reflector 10 and the second reflector 20 at a position shifted from the rear ends of the first reflector 10 and the second reflector 20 downward, up, left or right. And the valve 40 may be arrange | positioned so that the longitudinal direction of the valve 40 may cross | intersect with respect to the front-back direction.

  The light emission source (for example, a light emitting tube or a filament) of the bulb 40 is disposed at the first focal point F1 of the first reflecting surface 11 or in the vicinity of the first focal point F1. The light emission source of the bulb 40 is disposed at the first focal point F3 of the second reflecting surface 21 or in the vicinity of the first focal point F3. The optical axis Ax1 passes through the light emission source of the bulb 40.

  The light source may be a light emitting diode, an inorganic electroluminescent element, an organic electroluminescent element, or other light emitting elements instead of the bulb 40. When a light emitting element is used as the light source, the light emitting element is disposed at or near the first focus F1, and the light emitting element is disposed at or near the first focus F3.

  Since the first reflecting surface 11 is above the horizontal plane passing through the optical axis Ax1, the first reflecting surface 11 is separated from the light source of the bulb 40 and surrounds the left, right, back and top of the light source. Since the second reflecting surface 21 is below the horizontal plane passing through the optical axis Ax, the second reflecting surface 21 is separated from the light emitting source of the bulb 40 and surrounds the left, right, rear and bottom of the light emitting source.

  A light shielding unit 70 is disposed inside the first reflector 10 and the second reflector 20. The light shielding portion 70 has a width in the vertical direction and is formed in a belt shape. The light shielding unit 70 is disposed along a horizontal plane passing through the optical axis Ax1. The light shielding portion 70 is curved in a bow shape along the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21. The light shielding unit 70 divides the first reflecting surface 11 and the second reflecting surface 21 vertically. Moreover, it is preferable that the surface of the light-shielding part 70 is anti-reflective coating.

  The light shielding portion 70 may be separated inward from the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21, or above the lower edge 12 and the second reflecting surface 21 of the first reflecting surface 11. It may be in contact with the edge 22. For example, a black paint is applied in a strip shape along the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21, thereby forming the light shielding portion 70. Alternatively, the light shielding portion 70 is formed by sticking the black belt-like sheet along the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21. Alternatively, the light shielding portion 70 is formed by disposing a black belt-like plate curved in a bow shape just inside the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21.

  Note that a gap may be formed between the lower edge 12 of the first reflecting surface 11 and the upper edge 22 of the second reflecting surface 21 instead of forming the light shielding portion 70.

  A third reflector 30 is disposed in front of the first reflector 10 and above the second focal point F2. The first reflector 10 is formed in a substantially flat plate shape. A third reflecting surface 31 is formed on one surface of the third reflector 30, and the third reflecting surface 31 faces downward. The third reflecting surface 31 is formed in a flat surface or a free curved surface based on the flat surface. The third reflecting surface 31 is inclined forwardly with respect to the horizontal plane. The upper and lower positions of the third reflecting surface 31 are substantially the same as the position of the upper end of the first reflector 10. The rear edge 32 of the third reflective surface 31 is spaced forward from the front edge 13 of the first reflective surface 11. The third reflecting surface 31 is disposed so as to penetrate the vertical plane passing through the optical axis Ax to the left and right.

  The second focal point F <b> 4 of the second reflecting surface 21 is disposed on the third reflecting surface 31 or in the vicinity of the third reflecting surface 31. Specifically, the third reflecting surface 31 passes through the second focal point F <b> 4 of the second reflecting surface 21. Therefore, the virtual image V4 of the second focal point F4 formed by the third reflecting surface 31 overlaps the second focal point F4. Note that the second focal point F <b> 4 of the second reflecting surface 21 may be separated from the third reflecting surface 31. In that case, the virtual image V4 of the second focal point F4 formed by the third reflecting surface 31 is displaced from the second focal point F4 (see the dotted line in FIG. 2).

  The first projection lens 50 is disposed in front of the second reflector 20 and the second reflecting surface 21. The second projection lens 60 is disposed in front of the first reflector 10 and the first reflecting surface 11. The first projection lens 50 is disposed below a horizontal plane passing through the optical axis Ax1, and the second projection lens 60 is disposed above a horizontal plane passing through the optical axis Ax1. The first projection lens 50 and the second projection lens 60 are arranged in parallel vertically. The first projection lens 50 and the second projection lens 60 are integrally formed.

  The first projection lens 50 sets a rear focal point F5 behind it, and the rear focal point F5 is disposed between the first projection lens 50 and the bulb 40. Specifically, the rear focal point F5 of the first projection lens 50 is disposed at or near the second focal point F2 of the first reflecting surface 11, and the optical axis of the first projection lens 50 is the rear focal point. It extends in the front-rear direction through F5.

  The second projection lens 60 sets a rear focus F6 behind it, and the rear focus F6 is set between the second projection lens 60 and the first reflector 10. Specifically, the rear focal point F6 of the second projection lens 60 is disposed in or near the virtual image V4 of the second focal point F4 of the second reflecting surface 21, and the optical axis of the second projection lens 60 is the rear side. It extends in the front-rear direction through the focal point F6.

  The optical axis of the second projection lens 60 and the optical axis of the first projection lens 50 are parallel, and the optical axis of the second projection lens 60 is positioned on the optical axis of the first projection lens 50. The optical axis of the second projection lens 60 and the optical axis of the first projection lens 50 are parallel to the optical axis Ax1 of the lamp. It is preferable that the optical axis Ax1 of the first projection lens 50 coincides with the optical axis Ax1 of the lamp.

  The first projection lens 50 is a convex lens. The first projection lens 50 has an incident surface 51 based on a surface orthogonal to the optical axis of the first projection lens 50 on the rear side, and has an aspherical convex emission surface 52 on the front side. The range in which the entrance surface 51 and the exit surface 52 are formed is below the horizontal plane that passes through the optical axis of the first projection lens 50. The 1st projection lens 50, the entrance plane 51, and the output surface 52 are arrange | positioned so that the vertical plane which passes along the optical axis Ax1 may be penetrated to right and left.

  The second projection lens 60 is a convex lens. The second projection lens 60 has an incident surface 61 based on a surface orthogonal to the optical axis of the second projection lens 60 on the rear side, and an emission surface 62 having an aspherical convex surface on the front side. The range where the incident surface 61 is formed is between a horizontal plane passing through the optical axis of the first projection lens 50 and a horizontal plane passing through the optical axis of the second projection lens 60. The range where the emission surface 62 is formed is above the horizontal plane passing through the optical axis of the first projection lens 50. The second projection lens 60, the entrance surface 61, and the exit surface 62 are arranged so as to penetrate the vertical plane passing through the optical axis Ax1 to the left and right.

  The incident surface 51 of the first projection lens 50 is a convex cylindrical surface array. That is, the incident surface 51 has a plurality of convex cylindrical surfaces 53, and these convex cylindrical surfaces 53 extend in the vertical direction and are arranged on the left and right.

  The incident surface 61 of the second projection lens 60 is also a convex cylindrical surface array. The incident surface 61 has a plurality of convex cylindrical surfaces 63, and these convex cylindrical surfaces 63 extend in the vertical direction and are arranged on the left and right. The convex cylindrical surface 63 is a surface obtained by extending the convex cylindrical surface 53 upward, and the convex cylindrical surface 63 is continuous with the convex cylindrical surface 53.

The operation of the vehicular lamp 1 will be described.
When the bulb 40 is turned on, the light emitted upward from the light source of the bulb 40 is reflected downward and forward by the first reflecting surface 11. Since the light emission source of the bulb 40 is disposed at or near the first focal point F1 of the first reflecting surface 11, the light emitted from the bulb 40 and reflected by the first reflecting surface 11 is collected at the second focal point F2. The The light collected by the first reflecting surface 11 is projected forward by the first projection lens 50. The light projected by the first projection lens 50 forms a light distribution as shown in FIG.

  The light reflected by the first reflecting surface 11 travels downward in the front, and the light beam reflected by the first reflecting surface 11 passes through the vicinity of the focal points F2 and F5 from diagonally rearward to diagonally forward and downward. Therefore, the light projected by the first projection lens 50 is irradiated below the horizontal plane passing through the optical axis Ax1, and the bright portion LA1 is formed on the front virtual screen as shown in FIG. As shown in FIG. 5A, the bright part LA1 is formed below the horizontal plane passing through the optical axis Ax1, the dark part DA1 is formed on the bright part LA1, and the bright / dark boundary line (cut-off line) COL1 is the optical axis. It is formed along a horizontal plane passing through Ax1.

  Since the light emitted from the light emitting source of the bulb 40 is shielded by the light shielding unit 70, the light is not reflected by the first reflecting surface 11 in the vicinity of the horizontal plane passing through the optical axis Ax1. Therefore, the dark part near the horizontal plane passing through the optical axis Ax1 is emphasized, and the light / dark boundary line COL1 appears more clearly.

  Since the incident surface 51 of the first projection lens 50 is a convex cylindrical surface array, the bright portion LA1 extends left and right.

  Light emitted downward from the light emitting source of the bulb 40 is reflected upward by the second reflecting surface 21. Since the light emitting source of the bulb 40 is disposed at or near the first focal point F3 of the second reflecting surface 21, the light emitted from the bulb 40 and reflected by the second reflecting surface 21 is collected at the second focal point F4. The The light collected by the second reflecting surface 21 is reflected by the third reflecting surface 31 toward the second projection lens 60. The light reflected by the third reflecting surface 31 is projected forward by the second projection lens 60. The light projected by the second projection lens 60 forms a light distribution as shown in FIG.

  The light reflected by the second reflecting surface 21 travels upward in the front, the reflected light is reflected by the third reflecting surface 31, and the light reflected by the third reflecting surface 31 travels downward in the front. Therefore, the light beam reflected by the third reflecting surface 31 seems to pass through the vicinity of the focal point F6 and the virtual image V4 from the upper diagonally backward to the lower diagonally forward. Therefore, the light projected by the second projection lens 60 is irradiated below the horizontal plane passing through the optical axis Ax1, and the bright portion LA2 is formed on the front virtual screen as shown in FIG. 5B. As shown in FIG. 5B, the bright portion LA2 is formed below the horizontal plane passing through the optical axis Ax1, the dark portion DA2 is formed above the bright portion LA2, and the bright / dark boundary line COL2 passes through the optical axis Ax1. Formed along.

Since the light emitted from the light emitting source of the bulb 40 is shielded by the light shielding unit 70, the light is not reflected by the second reflecting surface 21 in the vicinity of the horizontal plane passing through the optical axis Ax1. Therefore, the dark part near the horizontal plane passing through the optical axis Ax1 is emphasized, and the light / dark boundary line COL2 appears more clearly.
In addition, since the incident surface 61 of the second projection lens 60 is a convex cylindrical surface array, the bright portion LA2 spreads left and right.

  The light distribution shown in FIG. 5C is a combination of the light distribution shown in FIG. 5A and the light distribution shown in FIG. Under the horizontal plane passing through the optical axis Ax1, the bright part LA1 and the bright part LA2 overlap to form a bright part LA3, and a light-dark boundary line COL3 that divides the bright part LA3 and the dark part DA3 above it passes through the optical axis Ax1. It is formed along a horizontal plane. Since the bright part LA3 is formed by overlapping the bright part LA1 and the bright part LA2, the brightness difference between the bright part LA3 and the dark part DA3 becomes large, and the bright / dark boundary line COL3 appears more clearly.

  Both the light emitted upward from the light source of the bulb 40 and the light emitted downward from the light source of the bulb 40 contribute to the formation of the bright portion LA3. That is, the luminous flux utilization efficiency is improved and the bright part LA3 is very bright. Therefore, the bright vehicle lamp 1 can be provided.

  Since the two projection lenses 50 and 60 are used, the light distribution by the light reflected by the first reflecting surface 11 (see FIG. 5A) and the light distribution by the light reflected by the second reflecting surface 21 (FIG. 5). (See (b)) can be designed separately. That is, the characteristics of the first projection lens 50 do not affect the light distribution shown in FIG. 5B, and the characteristics of the second projection lens 60 do not affect the light distribution shown in FIG. As a result, the degree of freedom in designing the light distribution is improved.

  Since most of the light emitted from the bulb 40 is not blocked, the brightness of the bright portion LA3 can be maintained even if the light emission intensity of the bulb 40 is weak. Therefore, the power consumption of the bulb 40 can be reduced, and the high temperature of the vehicular lamp 1 can be suppressed.

[Modification]
The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention. The following modifications may be combined as much as possible.

[Modification 1]
In order to make the light / dark boundary line COL1 shown in FIG. 5A clearer, the shade is disposed below the focal points F2 and F5, and the upper edge of the shade is located at or near the focal points F2 and F5. Since the shade is provided, a part of the light reflected by the first reflecting surface 11 is shielded in the vicinity of the focal points F2 and F5, so that the light / dark boundary line COL1 appears clearly. In this case, the shape of the light / dark boundary line COL1 is obtained by inverting the shape of the upper edge of the shade as viewed from behind in the vertical and horizontal directions. If the upper edge of the shade is stepped on the left and right, the light / dark boundary line COL1 is also stepped on the left and right of the horizontal plane passing through the optical axis Ax.
Even if the shade is provided, the second focal point F4 of the second reflecting surface 21 is located above the upper end of the shade, so that the light reflected by the second reflecting surface 21 is not blocked by the shade.

[Modification 2]
In order to make the light / dark boundary line COL2 shown in FIG. 5B clearer, the rear edge 32 of the third reflecting surface 31 is located at or near the focal points F4 and F6. In that case, the rear edge 32 of the third reflecting surface 31 is located at or near the virtual image V4 of the focal point F4. Since a part of the light reflected by the second reflecting surface 21 is not reflected by the third reflecting surface 31 in the vicinity of the focal points F4, F6, the light / dark boundary line COL2 appears clearly. If the rear edge 32 of the third reflecting surface 31 is stepped on the left and right, the light / dark boundary line COL2 is also stepped on the left and right of the horizontal plane passing through the optical axis Ax.

[Modification 3]
The shape of one or both of the incident surface 51 and the exit surface 52 of the first projection lens 50 may be changed within a range where the light distribution formed by the vehicular lamp 1 satisfies the standard. Similarly, the shape of both or one of the entrance surface 61 and the exit surface 62 of the second projection lens 60 may be changed as long as the light distribution formed by the vehicle lamp 1 satisfies the standard. For example, the incident surfaces 51 and 61 may be flat surfaces, concave surfaces, or free-form surfaces instead of convex cylindrical surface arrays.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 11 1st reflective surface 21 2nd reflective surface 31 3rd reflective surface 40 Bulb (light source)
DESCRIPTION OF SYMBOLS 50 1st projection lens 51 Incident surface of 1st projection lens 52 Emitting surface of 1st projection lens 53 Convex cylindrical surface 60 Second projection lens 61 Incident surface of 2nd projection lens 62 Emitting surface of 2nd projection lens 63 Convex cylindrical surface F1 First focal point of the first reflecting surface F2 Second focal point of the first reflecting surface F3 First focal point of the second reflecting surface F4 Second focal point of the second reflecting surface F5 Rear focal point of the first projection lens F6 Second projection lens Back focal point V4 Virtual image of the second focal point of the second reflecting surface

Claims (8)

A light source;
An ellipsoidal type that surrounds the top, left, right and back of the light source apart from the light source, sets a first focal point at or near the light source, and sets a second focal point in front of the light source A reflective surface;
A first projection lens disposed in front of the light source and setting a rear focal point at or near the second focal point of the first reflecting surface;
Surrounding the lower, left, right and rear of the light source away from the light source, setting a first focal point at or near the light source, and a second focal point above the second focal point of the first reflecting surface An ellipsoidal second reflecting surface for setting
A third reflecting surface that is arranged to face downward above the second focal point of the first reflecting surface and forms a virtual image of the second focal point of the second reflecting surface;
A vehicular lamp comprising: a second projection lens that is disposed on the first projection lens and sets a rear focal point at or near the virtual image formed by the third reflecting surface. A light source;
A first reflective surface that is spaced apart from the light source, surrounds the top, left, right, and back of the light source, reflects light from the light source, and collects the light at a location in front of the light source;
A first projection lens that is disposed in front of the spot condensed by the first reflecting surface and projects the light collected by the first reflecting surface forward;
The first light source is separated from the light source, surrounds the lower, left, right, and rear of the light source, reflects the light from the light source, and collects the light at a location above the location that is collected by the first reflecting surface. Two reflective surfaces;
A third reflecting surface that is disposed to face downward above the portion that is collected by the first reflecting surface, and that reflects the light collected by the second reflecting surface;
A vehicular lamp, comprising: a second projection lens that is disposed on the first projection lens and projects the light reflected by the third reflecting surface forward.   The first reflecting surface is disposed above the lamp optical axis extending in the front-rear direction, the first reflecting surface has a lower edge along a horizontal plane passing through the lamp optical axis, and the second reflecting surface is the lamp The vehicular lamp according to claim 1, wherein the vehicular lamp is disposed below the optical axis, and the second reflecting surface has an upper edge along a horizontal plane passing through the lamp optical axis.   The light-shielding part further arrange | positioned along the said lower edge of the said 1st reflective surface and the said upper edge of the said 2nd reflective surface inside a said 1st reflective surface and a said 2nd reflective surface. Vehicle lamp.   The vehicular lamp according to claim 4, wherein the light shielding portion is provided in a strip shape having a width in the vertical direction. The first projection lens has an entrance surface on the rear side, and a convex exit surface on the front side,
The vehicular lamp according to any one of claims 1 to 5, wherein the incident surface of the first projection lens extends in the vertical direction and has a plurality of convex cylindrical surfaces arranged on the left and right. . The second projection lens has an entrance surface on the back side, and a convex exit surface on the front side,
The vehicular lamp according to any one of claims 1 to 6, wherein the incident surface of the second projection lens extends in the vertical direction and has a plurality of convex cylindrical surfaces arranged on the left and right. .   The vehicular lamp according to any one of claims 1 to 7, wherein the first projection lens and the second projection lens are integrated.