JP4423527B2 - Vehicle lighting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular lamp that is used, for example, as a headlamp or an auxiliary headlamp provided at the front of an automobile.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, automobile headlamps are configured, for example, as shown in FIG.
That is, in FIG. 7, a headlamp 1 includes a light source 2, a main reflection surface 3 that reflects light from the light source 2 forward, and a projection lens 4 that focuses light from the light source 2 or the main reflection surface 3. And a shutter 5 for cut-off disposed in the optical path from the light source 2 to the projection lens 4.
[0003]
According to the headlamp 1 having such a configuration, the light emitted from the light source 2 is reflected directly or by the main reflecting surface 3 and enters the projection lens 4, and is converged by the projection lens 4. Illuminating a predetermined range. At that time, a part of the light incident on the projection lens 4 is blocked by the shutter 5, so that a desired light distribution characteristic that shortens the irradiation distance on the oncoming lane side so as not to give a dazzling light to the oncoming vehicle. It has come to be obtained.
[0004]
[Problems to be solved by the invention]
However, in such a headlamp 1, light is emitted from the light source 2 toward all other directions except the direction of the base (which constitutes the light source 2), but directly from the light source 2, Alternatively, the light reflected by the main reflecting surface 3 and entering the projection lens 4 is a part of the light emitted from the light source 2. Therefore, it cannot be said that the amount of light irradiated forward through the projection lens 4 is sufficient.
[0005]
By the way, as indicated by reference numeral 3 a in FIG. 7, it is conceivable that the peripheral edge of the main reflection surface 3 is extended, and the light from the light source 2 is reflected by the extension 3 a to enter the projection lens 4. As a result, the light in the range indicated by the oblique lines in FIG. 7 is guided to the projection lens 4 and irradiated toward the front of the automobile.
However, in this case, since the light reflected by the extension 3a has a large angle with respect to the optical axis, the diameter of the projection lens 4 needs to be enlarged correspondingly. It becomes large. For this reason, the projection lens 4 becomes large and heavy, and the cost of parts increases.
[0006]
On the other hand, as shown in FIG. 8, instead of the extension 3a, a separate spherical sub-reflection surface 6 is provided so that the light emitted from the light source 2 is returned to the light source 2 again. It is also possible to increase the amount of light of the headlamp 1 by making it re-reflected by 3 and entering the projection lens 4.
However, in this case, when the light source 2 has the filament 2a, as shown in FIG. 9, the light returned to the light source 2 by the sub-reflecting surface 6 is incident on the filament 2a, whereby the filament 2a. Or the filament 2a is heated by the return light and becomes high temperature, and the life may be shortened.
On the other hand, when the light source 2 is a discharge lamp, the return light to the light source 2 can pass through the light source 2 as shown in FIG. 10, so that the problem as in the case of the filament 2a does not occur. .
[0007]
On the other hand, since the headlamp 1 is provided with the shutter 5 as described above, when the light from the light source 2 is reflected by the spherical sub-reflection surface 6, the light incident on the projection lens 4 is shuttered. 5 may be interrupted. In this case, the meaning of providing the sub-reflection surface 6 for increasing the light quantity of the headlamp 1 is lost.
[0008]
In view of the above, an object of the present invention is to provide a vehicular lamp that can increase the amount of light forward with a simple configuration without increasing the size of a projection lens.
[0009]
According to the configuration of the present invention, the above object is achieved by a light source, a main reflection surface that reflects light from the light source forward, a projection lens that focuses light from the light source or the main reflection surface, and a projection lens from the light source. In a projector-type vehicular lamp including a shutter for cut-off disposed in the optical path to the light, the light that does not enter the projection lens among the light from the light source or the light reflected by the main reflection surface In the light path Provided at least either above or below the lamp optical axis in front of the light emission center of the light source, Equipped with a sub-reflecting surface consisting of an elliptical reflecting surface with the first focus near the light When the second focal point of the sub-reflecting surface is located above the lamp optical axis, the second focal point is disposed in front of the light emission center near the optical axis and located below the lamp optical axis. Is arranged behind the emission center near the optical axis. This is achieved by a vehicular lamp characterized in that
[0010]
In the vehicular lamp according to the present invention, preferably, the second focal point of the portion located above the optical axis of the sub-reflection surface is disposed in front of the light source.
[0011]
In the vehicular lamp according to the present invention, preferably, the second focal point of the portion located below the optical axis of the sub-reflecting surface is disposed behind the light source.
[0012]
In the vehicle lamp according to the present invention, preferably, the second focal point of the sub-reflecting surface is disposed below the light source.
[0013]
In the vehicular lamp according to the present invention, preferably, the sub-reflecting surface is divided into right and left, the second focal point of the left side portion is arranged on the left side of the light source, and the second focal point of the right side portion thereof. Is arranged to the right of the light source.
[0014]
In the vehicular lamp according to the present invention, preferably, the sub-reflecting surface is divided into right and left, the second focal point of the left part thereof is arranged at the lower left of the light source, and the second focal point of the right part thereof is , Arranged at the lower right of the light source.
[0015]
In the vehicular lamp according to the present invention, preferably, the sub-reflection surface is formed integrally with the main reflection surface.
[0016]
According to the above configuration, the light that is reflected from the light source directly or reflected by the main reflecting surface and is incident on the projection lens is converged by the projection lens and irradiated forward to illuminate a predetermined irradiation range. At this time, a part of the light incident on the projection lens is blocked by the shutter, so that desired orientation characteristics can be obtained such that the irradiation distance becomes longer on the oncoming lane side so as not to give the oncoming vehicle dazzling light.
[0017]
Furthermore, the light reflected by the sub-reflecting surface from the light source is focused toward the second focal point of the sub-reflecting surface, then reflected by the main reflecting surface, enters the projection lens, and is similarly focused by the projection lens, It irradiates forward and illuminates a predetermined irradiation range. At this time, since the first focal point of the sub-reflecting surface is arranged near the light source, the light reflected by the sub-reflecting surface is not the first focal point near the light source, but the second focal point separated from the light source by a predetermined distance. Since the light reflected by the sub-reflecting surface is incident on the projection lens without being blocked by the shutter and is irradiated toward the front, the amount of light applied to the front increases and is sufficient. A sufficient amount of light can be obtained.
[0018]
When the second focal point of the portion located above the optical axis of the sub-reflecting surface is disposed in front of the light source, the light reflected by the upper portion of the sub-reflecting surface and converged forward from the second focal point Is reflected slightly upward on the main reflecting surface, and then passes above the shutter and enters the projection lens. Thereby, since the light reflected by the sub-reflecting surface is not blocked by the shutter, the amount of light irradiated toward the front is surely increased.
[0019]
When the second focal point of the portion located below the optical axis of the sub-reflecting surface is disposed behind the light source, the light reflected by the lower portion of the sub-reflecting surface and converged forward from the second focal point Is reflected slightly upward on the main reflecting surface, and then passes above the shutter and enters the projection lens. Thereby, since the light reflected by the sub-reflecting surface is not blocked by the shutter, the amount of light irradiated toward the front is surely increased.
[0020]
When the second focal point of the sub-reflecting surface is disposed below the light source, the light reflected by the sub-reflecting surface and focused below the second focal point is reflected slightly upward on the main reflecting surface. As a result, the light passes above the shutter and enters the projection lens. Thereby, since the light reflected by the sub-reflecting surface is not blocked by the shutter, the amount of light irradiated toward the front is surely increased.
[0021]
The sub-reflecting surface is divided into right and left, the second focal point of the left side portion is arranged to the left of the light source, and the second focal point of the right side portion is arranged to the right of the light source. In this case, the light reflected by the left part of the sub-reflecting surface and focused to the left of the second focal point is reflected slightly leftward by the main reflecting surface, and is reflected by the right part of the sub-reflecting surface and reflected by the second focal point. The light focused more to the right is reflected slightly to the right by the main reflecting surface, and enters the projection lens while avoiding the glass tube that forms the outer shape of the light source. Thereby, since the light reflected by the sub-reflecting surface is not blocked by the shutter, the amount of light irradiated toward the front is surely increased.
[0022]
The sub-reflecting surface is divided into right and left, the second focal point of the left side portion is arranged at the lower left side of the light source, and the second focal point of the right side portion is arranged at the lower right side of the light source The light that is reflected by the left part of the sub-reflecting surface and converges to the lower left of the second focal point is reflected slightly downward to the left by the main reflecting surface, and is reflected by the right part of the sub-reflecting surface and from the second focal point. The light that converges to the lower right is reflected slightly downward to the right by the main reflecting surface, so that it avoids the glass tube that forms the outer shape of the light source, passes above the shutter, and enters the projection lens. . Thereby, since the light reflected by the sub-reflecting surface is not blocked by the shutter, the amount of light irradiated toward the front is surely increased.
[0023]
When the sub-reflecting surface is formed integrally with the main reflecting surface, the position of the sub-reflecting surface with respect to the main reflecting surface is maintained, so that the assembly is facilitated and the sub-reflecting surface with respect to the main reflecting surface is maintained. The positioning accuracy can be accurately maintained.
[0024]
In this way, according to the present invention, the sub-reflection surface is disposed in the optical path of the light from the light source or the light reflected by the main reflection surface and not incident on the projection lens, thereby being reflected by the sub-reflection surface. The focused light is focused toward the second focal point of the sub-reflecting surface, not the first focal point near the light source, and then reflected by the main reflecting surface and enters the projection lens. Therefore, the light reflected by the sub-reflecting surface is incident on the projection lens without being blocked by the shutter and is irradiated forward, so that the amount of light irradiated forward increases and a sufficient amount of light is obtained. It will be.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6.
The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. As long as there is no description of the effect, it is not restricted to these aspects.
[0026]
FIG. 1 shows a configuration of a first embodiment of a vehicular lamp according to the present invention.
In FIG. 1, a vehicular lamp 10 is a headlight of an automobile, and includes a bulb 11 as a light source, a main reflection surface 12 arranged so as to surround the bulb 11, a projection lens 13, a shutter 14, Further, the auxiliary reflection surface 15 is formed.
[0027]
The bulb 11 is a bulb configured as a discharge lamp that is generally used for a vehicle headlamp or an auxiliary headlamp. The bulb 11 is fixed and held by a socket 11a and is supplied with power.
[0028]
The main reflection surface 12 is formed in a concave shape toward the front so as to reflect the light from the bulb 11 and guide it to the projection lens 18.
[0029]
The projection lens 13 is a convex lens disposed on the optical axis extending in front of the bulb 11, and converges the light reflected directly from the bulb 11 or on the main reflecting surface 12 and irradiates it forward. .
[0030]
The shutter 14 is made of a light shielding material, and is disposed between the bulb 11 and the projection lens 13, and blocks a part of the light reflected directly from the bulb 11 or by the main reflecting surface 12. Thus, the cutoff is defined and the light distribution characteristic of the light projected by the projection lens 13 is adjusted.
[0031]
The sub-reflecting surface 15 is an elliptical reflecting surface, and the first focal point 15a is located in the vicinity of the light emission center of the bulb 11, and the second focal point 15b is located in front of the light emission center of the bulb 11. 11 is disposed in a region above 11.
Here, the elliptical reflection surface includes not only a spheroid and an elliptic cylinder but also a free-form surface based on an ellipse.
Further, the sub-reflection surface 15 is preferably configured integrally with the main reflection surface 11. Thereby, the positioning of the sub reflective surface 15 with respect to the main reflective surface 11 can be easily and accurately performed.
[0032]
The vehicular lamp 10 according to the embodiment of the present invention is configured as described above, and the light L1 emitted from the light emission center of the bulb 11 is emitted directly or mainly when the bulb 11 is supplied with power from the socket 11a and emits light. After being reflected by the reflecting surface 12 and partially blocked by the shutter 14, the light is incident on the projection lens 13, converged by the refractive action of the projection lens 13, and irradiated forward.
[0033]
The light L2 emitted from the light emission center of the bulb 11 and reflected by the sub-reflection surface 15 is converged toward the second focal point 15b, that is, the front of the light emission center of the bulb 11, and then reflected by the main reflection surface 12. , Is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
Here, when the light L2 is reflected by the main reflection surface 12, the light L2 is irradiated upward slightly toward the front, and thus passes above the shutter 14. Therefore, the light L2 is not partially blocked by the shutter 14, and the light L2 reflected by the sub-reflecting surface 15 is reliably irradiated forward by the projection lens 13. The amount of light emitted toward the front increases.
[0034]
FIG. 2 shows a configuration of a second embodiment of the vehicular lamp according to the present invention.
In FIG. 2, the vehicular lamp 20 has substantially the same configuration as the vehicular lamp shown in FIG. 1 except that a sub-reflecting surface 21 is provided instead of the sub-reflecting surface 15. Elements are denoted by the same reference numerals and description thereof is omitted.
[0035]
The sub-reflecting surface 21 is an elliptical reflecting surface, and the first focal point 21 a is located near the light emission center of the bulb 11 and the second focal point 21 b is located behind the light emission center of the bulb 11. 11 is disposed in a region below the emission center.
Further, the sub-reflection surface 21 is preferably configured integrally with the main reflection surface 11. As a result, the sub-reflecting surface 21 can be easily and accurately positioned with respect to the main reflecting surface 11.
[0036]
According to the vehicular lamp 20 having such a configuration, when the bulb 11 is supplied with power from the socket 11a and emits light, the light L3 emitted from the light emission center of the bulb 11 is reflected directly or by the main reflecting surface 12. After being partially blocked by the shutter 14, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
[0037]
The light L4 emitted from the light emission center of the bulb 11 and reflected by the sub-reflection surface 21 is converged toward the second focal point 21b, that is, the rear of the light emission center of the bulb 11, and then reflected by the main reflection surface 12. , Is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
Here, when the light L4 is reflected by the main reflecting surface 12, the light L4 is irradiated upward slightly forward, thereby passing above the shutter 14. Therefore, the light L4 is not partially blocked by the shutter 14, and the light L4 reflected by the sub-reflecting surface 21 is reliably irradiated forward by the projection lens 13. The amount of light emitted toward the front increases.
[0038]
FIG. 3 shows the configuration of the third embodiment of the vehicular lamp according to the present invention.
In FIG. 3, the vehicular lamp 30 has substantially the same configuration as the vehicular lamp shown in FIG. 1 except that a sub-reflecting surface 31 is provided instead of the sub-reflecting surface 15. Elements are denoted by the same reference numerals and description thereof is omitted.
[0039]
The sub-reflecting surface 31 is an elliptical reflecting surface, and the first focal point 31 a is located near the light emission center of the bulb 11 and the second focal point 31 b is located below the light emission center of the bulb 11. 11 are disposed above and below the emission center.
Further, the sub-reflection surface 31 is preferably configured integrally with the main reflection surface 11. Thereby, positioning of the sub-reflection surface 31 with respect to the main reflection surface 11 can be performed easily and accurately.
[0040]
According to the vehicular lamp 30 having such a configuration, light (not shown) emitted from the light emission center of the bulb 11 is emitted directly or directly from the main reflecting surface 12 when the bulb 11 is supplied with power from the socket 11a and emits light. After being partially blocked by the shutter 14, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
[0041]
The light L5 emitted from the light emission center of the bulb 11 and reflected by the sub-reflection surface 31 is converged toward the second focal point 31b, that is, below the light emission center of the bulb 11, and then reflected by the main reflection surface 12. , Is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
Here, when the light L5 is reflected by the main reflecting surface 12, the light L5 is irradiated upward slightly toward the front, so that the light L5 passes above the shutter 14. Therefore, the light L5 is not partially blocked by the shutter 14, and the light reflected by the sub-reflecting surface 31 is reliably irradiated forward by the projection lens 13. The amount of light irradiated toward the front increases.
[0042]
FIG. 4 shows the configuration of the fourth embodiment of the vehicular lamp according to the present invention.
In FIG. 4, the vehicular lamp 40 has substantially the same configuration as the vehicular lamp shown in FIG. 1 except that a sub-reflecting surface 41 is provided instead of the sub-reflecting surface 15. Elements are denoted by the same reference numerals and description thereof is omitted.
[0043]
The sub-reflecting surface 41 is an elliptical reflecting surface including left portions 41L and 41R divided from the center to the left and right.
The left-side portion 41L of the sub-reflecting surface 41 has the bulb 11 so that the first focal point 41La is located near the emission center of the bulb 11 and the second focal point 41Lb is located to the left of the emission center of the bulb 11. Are disposed in the region above and below the emission center.
Further, the right portion 41R of the sub-reflecting surface 41 has the bulb 11 so that the first focal point 41Ra is located near the emission center of the bulb 11 and the second focal point 41Rb is located to the right of the emission center of the bulb 11. Are disposed in the region above and below the emission center.
Further, the sub-reflection surface 41, that is, the left portion 41L and the right portion 41R are preferably configured integrally with the main reflection surface 11. Thereby, the positioning of the sub-reflection surface 41 with respect to the main reflection surface 11 can be easily and accurately performed.
[0044]
According to the vehicular lamp 40 having such a configuration, when the bulb 11 is supplied with power from the socket 11a and emits light, light (not shown) emitted from the light emission center of the bulb 11 is directly or the main reflecting surface 12. After being partially blocked by the shutter 14, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
[0045]
The light L6L emitted from the light emission center of the bulb 11 and reflected by the left portion 41L of the sub-reflection surface 41 is focused toward the second focal point 41Lb, that is, the left side of the light emission center of the bulb 11, and then the main reflection surface. 12, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
On the other hand, the light L6R emitted from the light emission center of the bulb 11 and reflected by the right portion 41R of the sub-reflection surface 41 is focused toward the second focal point 41Rb, that is, the right side of the light emission center of the bulb 11, and then the main reflection surface. 12, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
In this way, when the light L6L and L6R are reflected by the main reflecting surface 12, they are irradiated to the front slightly to the left or to the right, thereby avoiding the glass tube constituting the outer shape of the bulb 11. However, it passes above the shutter 14. Therefore, the lights L6L and L6R are not partially blocked by the glass tube of the bulb 11, and the light reflected by the sub-reflecting surface 41 is reliably irradiated forward by the projection lens 13. As a result, the amount of light emitted toward the front increases.
[0046]
FIG. 5 shows a configuration of a fifth embodiment of the vehicular lamp according to the present invention.
In FIG. 5, the vehicular lamp 50 has substantially the same configuration as the vehicular lamp shown in FIG. 1 except that a sub-reflecting surface 51 is provided instead of the sub-reflecting surface 15. Elements are denoted by the same reference numerals and description thereof is omitted.
[0047]
The sub-reflecting surface 51 is an elliptical reflecting surface including left portions 51L and 51R divided from the center to the left and right.
The left-side portion 51L of the sub-reflecting surface 51 has the bulb 11 so that the first focal point 51La is located near the light emission center of the bulb 11, and the second focal point 51Lb is located on the lower left side of the emission center of the bulb 11. Are disposed in the region above and below the emission center.
Further, the right portion 51R of the sub-reflecting surface 51 has the bulb 11 so that the first focal point 51Ra is located near the emission center of the bulb 11 and the second focal point 51Rb is located on the lower right side of the emission center of the bulb 11. Are disposed in the region above and below the emission center.
Further, the sub-reflection surface 51, that is, the left portion 51L and the right portion 51R are preferably configured integrally with the main reflection surface 11. Thereby, positioning of the sub-reflection surface 51 with respect to the main reflection surface 11 can be performed easily and accurately.
[0048]
According to the vehicular lamp 50 having such a configuration, light (not shown) emitted from the light emission center of the bulb 11 is emitted directly or from the main reflecting surface 12 when the bulb 11 is supplied with power from the socket 11a and emits light. After being partially blocked by the shutter 14, the light is incident on the projection lens 13, converged by the refraction action of the projection lens 13, and irradiated forward.
[0049]
The light L7L emitted from the light emission center of the bulb 11 and reflected by the left portion 51L of the sub-reflection surface 51 is focused toward the second focal point 51Lb, that is, the lower left of the light emission center of the bulb 11, and then the main reflection surface. 12, the light is incident on the projection lens 13, converged by the refractive action of the projection lens 13, and irradiated forward.
On the other hand, the light L7R emitted from the light emission center of the bulb 11 and reflected by the right portion 51R of the sub-reflection surface 51 is focused toward the second focal point 51Rb, that is, the lower right of the light emission center of the bulb 11, and then the main reflection surface. 12, the light is incident on the projection lens 13, converged by the refractive action of the projection lens 13, and irradiated forward.
In this way, when the light L7L and L7R are reflected by the main reflecting surface 12, they are irradiated slightly upward or leftward and forward as shown in FIG. It passes over the shutter 14 while avoiding the glass tube constituting the outer shape. Therefore, the light L7L, L7R is not partially blocked by the glass tube of the bulb 11, and the light reflected by the sub-reflecting surface 51 is reliably irradiated forward by the projection lens 13. As a result, the amount of light emitted toward the front increases.
[0050]
Thus, according to the vehicle lamps 10 to 50 according to the embodiment of the present invention, the light L2, L4, L5, L6L, L6R, L7L, and L7R that are emitted from the bulb 11 and are not incident on the projection lens 13 are sub-reflected. After being reflected by the surfaces 15, 21, 31, 41, 51, the light is reflected by the main reflection surface 11 and enters the projection lens 13, so that more light from the bulb 11 is directed forward through the projection lens 13. In this case, since the light is not blocked by the shutter 14 by passing above the shutter 14, the amount of light irradiated toward the front can be surely increased. Become.
[0051]
Of the above-described embodiments, in the first embodiment, the sub-reflection surface 15 is disposed above the light emission center of the bulb 11, and in the second embodiment, the sub-reflection surface 21 is the emission center of the bulb 11. However, the sub-reflection surface 15 and the sub-reflection surface 21 may be arranged on the upper side and the lower side of the light emission center of the bulb 11, respectively. Thereby, the light quantity of the light irradiated toward the front can be further increased.
[0052]
【The invention's effect】
As described above, according to the present invention, the light reflected from the light source by the sub-reflecting surface is focused toward the second focal point of the sub-reflecting surface, and then reflected by the main reflecting surface to enter the projection lens. Similarly, the light is converged by the projection lens and irradiated toward the front to illuminate a predetermined irradiation range. At this time, since the first focal point of the sub-reflecting surface is arranged near the light source, the light reflected by the sub-reflecting surface is not the first focal point near the light source, but the second focal point separated from the light source by a predetermined distance. Since the light reflected by the sub-reflecting surface is incident on the projection lens without being blocked by the shutter and is irradiated toward the front, the amount of light applied to the front increases and is sufficient. A sufficient amount of light can be obtained.
As described above, according to the present invention, it is possible to provide an extremely excellent vehicular lamp with a simple configuration that increases the amount of light forward without increasing the size of the projection lens.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a first embodiment of a vehicular lamp according to the present invention.
FIG. 2 is a schematic side view showing a second embodiment of a vehicular lamp according to the present invention.
FIG. 3 is a schematic side view showing a third embodiment of a vehicular lamp according to the present invention.
FIG. 4 is a schematic side view showing a fourth embodiment of a vehicular lamp according to the present invention.
FIG. 5 is a schematic side view showing a fifth embodiment of a vehicular lamp according to the present invention.
6 is a front view showing light reflected by a sub-reflecting surface in the vehicular lamp of FIG. 5. FIG.
FIG. 7 is a schematic side view showing an example of a conventional vehicular lamp.
FIG. 8 is a schematic side view showing another example of a conventional vehicular lamp.
9 is a partially enlarged side view showing a state in which reflected light is incident on a filament by a sub-reflecting surface in the vehicular lamp of FIG. 8. FIG.
10 is a partial enlarged side view showing an incident state of light reflected by a sub-reflecting surface on the discharge portion of the discharge lamp in the vehicular lamp of FIG. 8. FIG.
[Explanation of symbols]
10, 20, 30, 40, 50 Vehicle lamp
11 Valve
12 Main reflective surface
13 Projection lens
14 Shutter
15, 21, 31, 41, 51 Sub-reflection surface

Claims (5)

For a light source, a main reflection surface that reflects the light from the light source forward, a projection lens that focuses the light from the light source or the main reflection surface, and a cutoff placed in the light path from the light source to the projection lens A projector-type vehicular lamp including a shutter of
Of the light from the light source or the light reflected by the main reflecting surface, provided in at least either above or below the lamp optical axis in front of the light emission center of the light source in the optical path of the light not incident on the projection lens. A sub-reflecting surface composed of an elliptical reflecting surface with the light source and its vicinity as the first focal point ;
The second focal point of the sub-reflecting surface is
When located above the lamp optical axis, it is disposed in front of the light emission center near the optical axis, and when located below the lamp optical axis, the light emission center near the optical axis. A vehicular lamp characterized by being arranged further rearward .   The vehicular lamp according to claim 1, wherein the second focal point of the sub-reflecting surface is disposed below the light source.   The sub-reflecting surface is divided into right and left, the second focal point of the left side portion is arranged to the left of the light source, and the second focal point of the right side portion is arranged to the right of the light source. The vehicular lamp according to claim 1, wherein:   The sub-reflecting surface is divided into right and left, the second focal point of the left side portion is arranged at the lower left side of the light source, and the second focal point of the right side portion is arranged at the lower right side of the light source The vehicular lamp according to claim 1, wherein: The vehicular lamp according to any one of claims 1 to 4 , wherein the sub-reflection surface is formed integrally with the main reflection surface.

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