JP4698566B2 - Projector type vehicle lamp - Google Patents

Description

  In the present invention, a light source, a reflector, and a shade are mechanically linked to each other between a low beam position for forming a low beam light distribution pattern and a high beam position for forming a high beam light distribution pattern. The projector-type vehicle lamp is configured to be rotatable, and when the light source, reflector, and shade are moved from the low beam position to the high beam position, the entire light distribution pattern moves upward. The present invention relates to a projector-type vehicular lamp that can improve the utilization efficiency of light emitted from a light source when forming a light distribution pattern.

  Conventionally, a light source, a reflector for reflecting light from the light source, a shade for blocking a part of the light from the reflector, and a projection lens for projecting light not blocked by the shade are provided. The light source, the reflector, and the shade are mechanically interlocked with each other between a low beam position for forming a low beam light distribution pattern and a high beam position for forming a high beam light distribution pattern. There is known a projector-type vehicular lamp that is configured so that the entire light distribution pattern moves upward when the light source, the reflector, and the shade are moved from the low beam position to the high beam position. An example of this type of projector-type vehicle lamp is described in, for example, Japanese Patent Application Laid-Open No. 2006-221882.

  In the projector-type vehicular lamp described in Japanese Patent Laid-Open No. 2006-221882, the light source, the reflector, and the projection lens are configured to be rotatable about the first rotation axis, and the shade is configured to have the second rotation axis as the rotation center. It is configured to be rotatable. Specifically, the light source, the reflector, the shade, and the projection lens are arranged at the low beam position when the low beam light distribution pattern is formed. On the other hand, at the time of forming the high beam light distribution pattern, the light source, the reflector, and the projection lens are rotated around the first rotation axis and are arranged at the high beam position. Furthermore, the shade is mechanically interlocked with the rotation of the light source, the reflector, and the projection lens, and is rotated about the second rotation axis as the rotation center, and is disposed at the high beam position.

  More specifically, in the projector-type vehicular lamp described in JP-A-2006-221882, when the light source, the reflector, the shade, and the projection lens are arranged at the high beam position, the light source, the reflector, the shade, and the projection are projected. The light source and the reflector are moved downward as compared with the case where the lens is disposed at the low beam position, and as a result, the reflected light from the reflector is irradiated upward. Therefore, when the light source, the reflector, the shade, and the projection lens are moved from the low beam position to the high beam position, the entire light distribution pattern moves upward.

  By the way, in the projector-type vehicular lamp described in Japanese Patent Laid-Open No. 2006-221882, reflected light from a portion of the reflector that is in front of the focal point of the projection lens (projection lens side) is incident on the projection lens. Not. That is, in the projector-type vehicle lamp described in Japanese Patent Application Laid-Open No. 2006-221882, light emitted from the light source is not effectively used in a portion of the reflector that is in front of the focal point of the projection lens.

  For this reason, in the projector-type vehicle lamp described in Japanese Patent Application Laid-Open No. 2006-221882, the driver may feel the light emitted from the projection lens particularly when forming a high-beam light distribution pattern.

JP 2006-221882 A

  In view of the above problems, an object of the present invention is to provide a projector-type vehicular lamp that can improve the utilization efficiency of light emitted from a light source when forming a high-beam light distribution pattern.

  More specifically, the present invention can improve the utilization efficiency of light emitted from a light source as compared with the projector-type vehicular lamp described in Japanese Patent Application Laid-Open No. 2006-221882 when forming a high-beam light distribution pattern. An object is to provide a vehicular lamp.

  According to the first aspect of the present invention, the light source, the first reflector for reflecting the light from the light source, the shade for blocking a part of the light from the first reflector, and the shade are blocked by the shade. A projection lens for projecting light that has not been obtained, wherein the light source, the first reflector, and the shade have a low beam position for forming a low beam light distribution pattern, and a high beam light distribution pattern. When the light source, the first reflector, and the shade are moved from the low beam position to the high beam position, the light source, the first reflector, and the shade are configured to rotate mechanically with each other. In the projector-type vehicle lamp in which the entire light distribution pattern moves upward, the light source, the first reflector, and the projector A second reflector for condensing the light from the light source in the vicinity of the focal point of the projection lens when it is disposed at the high beam position, extending to the front side of the focal point of the projection lens, Of the reflected light from the second reflector, a third reflector is provided for reflecting the light not directed toward the projection lens so as to enter the projection lens, and the third reflector is integrated with the shade. And when the light source, the first reflector, and the shade are disposed at the low beam position, the third reflector is retracted to a position off the optical path of the reflected light from the first reflector, and the light source When the first reflector and the shade are disposed at a high beam position, the third reflector is disposed on the projection lens. Projector type vehicular lamp, characterized in that arranged in the vicinity of the point is provided.

  According to a second aspect of the invention, the second reflector is configured as a fixed reflector that is not integrated with the light source and the first reflector. A light fixture is provided.

  According to a third aspect of the present invention, the projector type vehicle according to the first or second aspect, wherein the projection lens is configured as a fixed lens that is not integrated with the light source and the first reflector. A lighting fixture is provided.

  According to a fourth aspect of the present invention, the shade is retracted to a position off the optical path of the reflected light from the first reflector and the second reflector when the high beam light distribution pattern is formed. Item 4. A projector-type vehicular lamp according to any one of Items 1 to 3.

  According to the fifth aspect of the present invention, when the light source, the first reflector, and the shade are arranged at the high beam position, the fourth light for condensing the light from the light source in the vicinity of the light source. The projector-type vehicle lamp according to any one of claims 1 to 4, wherein a reflector is disposed below and in front of the light source.

  In the projector-type vehicle lamp according to claim 1, the light source, the first reflector for reflecting the light from the light source, and the shade for blocking a part of the light from the first reflector are arranged for low beam. A low beam position for forming a light pattern and a high beam position for forming a high beam light distribution pattern are configured to be mechanically interlocked with each other so as to be rotatable. Therefore, according to the projector-type vehicle lamp according to claim 1, the rotation control of the light source, the first reflector, and the shade is simplified as compared with the case where the rotation control of the light source, the first reflector, and the shade is separately performed. be able to.

  Furthermore, in the projector-type vehicle lamp according to claim 1, when the light source, the first reflector, and the shade are moved from the low beam position to the high beam position, the entire light distribution pattern moves upward. Therefore, according to the projector-type vehicle lamp of the first aspect, the upper portion of the high beam light distribution pattern can be brightened compared to the case where the entire light distribution pattern does not move upward when switching from the low beam to the high beam. it can. In other words, according to the projector type vehicle lamp of the first aspect, it is possible to illuminate far away when forming the high beam light distribution pattern, rather than when the entire light distribution pattern does not move upward when switching from the low beam to the high beam. it can.

  In the projector-type vehicle lamp according to claim 1, when the light source, the first reflector, and the shade are arranged at the high beam position, the light from the light source is condensed near the focus of the projection lens. The 2nd reflector is arrange | positioned so that it may extend to the front side rather than the focus of a projection lens. Further, a third reflector is provided for reflecting light that is not directed toward the projection lens out of the reflected light from the second reflector and entering the projection lens.

  That is, in the projector-type vehicle lamp according to claim 1, the reflected light from the portion of the second reflector that is in front of the focal point of the projection lens is reflected by the third reflector and is incident on the projection lens.

  Therefore, according to the projector-type vehicular lamp of the first aspect, the light emitted from the light source can be effectively used in the portion of the second reflector that is in front of the focal point of the projection lens. That is, according to the projector-type vehicle lamp according to claim 1, when the light distribution pattern for high beam is formed, the light emitted from the light source is not effectively used in the portion of the reflector in front of the focal point of the projection lens. As a result, the utilization efficiency of the light emitted from the light source can be improved, and the light emitted from the projection lens can be brightened.

  Specifically, in the projector-type vehicle lamp according to claim 1, the third reflector for reflecting the light not directed toward the projection lens out of the reflected light from the second reflector and entering the projection lens is provided. It is formed integrally with the shade. Furthermore, in the projector-type vehicle lamp according to claim 1, when the light source, the first reflector, and the shade are disposed at the low beam position, that is, the projection lens that condenses the reflected light from the first reflector. When the shade is disposed in the vicinity of the focal point, the third reflector is retracted to a position off the optical path of the reflected light from the first reflector.

  Therefore, according to the projector-type vehicular lamp of the first aspect, the third reflector and the shade are not integrated, and the third reflector and the shade are controlled in the third position, compared with the case where the position control of the third reflector and the shade is performed separately. The position control of the reflector and the shade can be simplified.

  In the projector-type vehicle lamp according to claim 1, when the light source, the first reflector, and the shade are arranged at the high beam position, the third reflector is arranged in the vicinity of the focal point of the projection lens. Therefore, according to the projector type vehicle lamp of the first aspect, the reflected light from the second reflector that is condensed near the focal point of the projection lens is reflected by the third reflector when the high beam distribution pattern is formed. Then, it can be incident on the projection lens.

  In the projector-type vehicle lamp according to claim 2, the second reflector extending to the front side from the focal point of the projection lens is not integrated with the light source and the first reflector, and is configured as a fixed reflector. .

  In other words, in the projector-type vehicle lamp according to claim 2, the relatively large and heavy second reflector extending to the front side of the focal point of the projection lens is movable so as to be rotatable integrally with the light source and the first reflector. Instead of being configured as a reflector, it is configured as a fixed reflector.

  Therefore, according to the projector-type vehicle lamp according to claim 2, the projector described in JP-A-2006-221882 in which the reflector extending to the front side of the focal point of the projection lens is rotated integrally with the light source. As a driving means for rotating the light source and the first reflector rather than the type vehicle lamp, it is possible to use a device having a relatively small driving force, and as a result, it is possible to reduce the cost of the entire projector type vehicle lamp. it can.

  In the projector-type vehicle lamp according to claim 3, the projection lens for projecting the light not blocked by the shade is not integrated with the light source and the first reflector, and is configured as a fixed lens. .

  In other words, in the projector-type vehicle lamp according to claim 3, the relatively heavy projection lens is not configured as a movable lens that can rotate integrally with the light source and the first reflector, but as a fixed lens. Has been.

  Therefore, according to the projector-type vehicle lamp of the third aspect, it is described in Japanese Patent Application Laid-Open No. 2006-221882 in which a projection lens for projecting light that is not blocked by the shade is rotated integrally with the light source. As a driving means for rotating the light source and the first reflector, it is possible to use a relatively small driving force as compared with the projector type vehicle lamp. As a result, the entire projector type vehicle lamp can be reduced in cost. be able to.

  In the projector-type vehicle lamp according to the fourth aspect, the shade is retracted to a position off the optical path of the reflected light from the first reflector and the second reflector when the high-beam light distribution pattern is formed. Therefore, according to the projector-type vehicular lamp of the fourth aspect, the projector is described in Japanese Patent Laid-Open No. 2006-221882 in which the shade is arranged on the optical path of the reflected light from the reflector when the high-beam light distribution pattern is formed. Unlike a type vehicle lamp, a light distribution pattern without a cut-off line can be formed as a high beam light distribution pattern. As a result, according to the projector type vehicle lamp described in claim 4, the upper portion of the high beam light distribution pattern can be made brighter than the projector type vehicle lamp described in JP-A-2006-221882. .

  In the projector-type vehicle lamp according to claim 5, when the light source, the first reflector, and the shade are arranged at the high beam position, that is, when the high beam light distribution pattern is formed, the light from the light source is brought near the light source. The 4th reflector for condensing is arrange | positioned below the light source and the front side. That is, in the projector-type vehicle lamp according to claim 5, when the light distribution pattern for high beam is formed, the light emitted from the light source to the lower side and the front side is condensed near the light source by the fourth reflector, and then , After being diffused, reflected by the first reflector, then condensed near the focal point of the projection lens, and then irradiated through the projection lens.

  Therefore, according to the projector-type vehicle lamp according to claim 5, the light emitted from the light source is higher than the case where the light emitted from the light source to the lower side and the front side is not effectively used when forming the high-beam light distribution pattern. The utilization efficiency can be improved. Specifically, according to the projector-type vehicle lamp described in claim 5, the projector-type vehicle lamp described in JP-A-2006-221882 in which no reflector is disposed below and in front of the light source. However, it is possible to improve the utilization efficiency of light emitted from the light source when forming the high beam light distribution pattern, and to brighten the light emitted from the projection lens when forming the high beam light distribution pattern.

  A projector-type vehicular lamp according to a first embodiment of the present invention will be described below. FIG. 1 is a cross-sectional view of the projector-type vehicular lamp according to the first embodiment when the low-beam light distribution pattern is formed, and FIG. 2 is a projector-type vehicle according to the first embodiment when the low-beam light distribution pattern is formed. It is a perspective view of a lamp for work.

  1 and 2, reference numeral 1 denotes a light source such as a halogen lamp or a high-intensity discharge lamp (HID lamp), and 2 denotes a first reflector for reflecting light from the light source 1. Reference numeral 3 denotes a shade for blocking a part of the light from the first reflector 2. Reference numeral 4 denotes a projection lens for projecting light not blocked by the shade 3. Reference numeral 5 denotes a second reflector disposed above the light source 1 (upper side in FIG. 1) in order to reflect the light from the light source 1, and 6 denotes at least a part of the reflected light from the second reflector 5. A third reflector for reflecting the light incident on the projection lens 4 is shown. Reference numeral 7 denotes a fourth reflector disposed below the light source 1 (lower side in FIG. 1) in order to reflect the light from the light source 1. A reflector is shown.

  In FIGS. 1 and 2, reference numeral 8 denotes a rotation axis serving as the rotation center of the light source 1 and the first reflector 2, and 9 denotes a rotation axis serving as the rotation center of the shade 3 and the third reflector 6. . In the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 1 and 2, the light source 1 and the first reflector 2 are integrated, and the shade 3 and the third reflector 6 are integrated. . Further, the focal point F of the projection lens 4 is disposed on or near the rotation shaft 8, and the rotation shaft 9 is disposed below the rotation shaft 8.

  Further, in FIGS. 1 and 2, reference numeral 10 denotes a solenoid for rotating the light source 1 and the first reflector 2 around the rotation shaft 8 and rotating the shade 3 and the third reflector 6 around the rotation shaft 9. Is shown. Reference numeral 11 denotes a spring for biasing the light source 1, the first reflector 2, the shade 3, and the third reflector 6 in the opposite direction against the solenoid 10. Reference numerals 12 and 13 denote gears for drivingly connecting the light source 1 and the first reflector 2 to the shade 3 and the third reflector 6. In FIG. 1, 20 indicates an outer lens, and 21 indicates a housing of a projector-type vehicle lamp.

  Although not shown in detail, in the projector-type vehicle lamp of the first embodiment, the rotation shaft 8 serving as the rotation center of the light source 1 and the first reflector 2 can be rotated by, for example, the housing 21 of the projector-type vehicle lamp. It is supported. In addition, a rotation shaft 9 serving as a rotation center of the shade 3 and the third reflector 6 is rotatably supported by, for example, a housing 21 of a projector-type vehicle lamp. Furthermore, the projection lens 4, the second reflector 5, and the fourth reflector 7 are fixed directly or indirectly to the housing 21 of the projector type vehicle lamp as shown in FIG.

  FIG. 3 is a view showing an optical path of light emitted from the light source 1 and reflected by the first reflector 2 when the low beam light distribution pattern is formed. Specifically, FIG. 3A is a diagram showing an optical path of light reflected by a portion of the first reflector 2 above the light source 1. FIG. 3B is a diagram showing an optical path of light reflected by a portion below the light source 1 in the first reflector 2. FIG. 4 is a view showing a low beam light distribution pattern PL of the projector-type vehicle lamp according to the first embodiment.

  In the projector-type vehicle lamp according to the first embodiment, the reflection surface of the first reflector 2 is constituted by a spheroid reflection surface, and the light source 1 is located near the first focal point of the spheroid reflection surface of the first reflector 2. The focal point F of the projection lens 4 is disposed in the vicinity of the second focal point of the spheroid reflection surface of the first reflector 2. Therefore, when the light distribution pattern for low beam is formed, the light reflected by the first reflector 2 out of the light emitted upward from the light source 1 is at the focal point F of the projection lens 4 as shown in FIG. The light is condensed in the vicinity and irradiated from the projection lens 4. Further, as shown in FIG. 3B, a part of the light reflected by the first reflector 2 among the light emitted downward from the light source 1 is blocked by the shade 3. Further, the light that has not been blocked by the shade 3 among the reflected light from the first reflector 2 is condensed in the vicinity of the focal point F of the projection lens 4 and irradiated from the projection lens 4.

  That is, in the projector-type vehicle lamp of the first embodiment, as shown in FIG. 3B, the first reflector 2 out of the light emitted downward from the light source 1 when the low-beam light distribution pattern is formed. Since part of the light reflected by the light is blocked by the shade 3, a cut-off line is formed at the upper edge of the low beam light distribution pattern PL as shown in FIG.

  In the projector-type vehicle lamp of the first embodiment, the second light source 1 is disposed at a position deviated from the focus of the second reflector 5 and the fourth reflector 7 when the low-beam light distribution pattern is formed. Most of the reflected light from the reflector 5 and the fourth reflector 7 does not enter the projection lens 4. As a result, the reflected light from the second reflector 5 and the fourth reflector 7 is not irradiated from the projection lens 4 as strong light.

  FIG. 5 is a cross-sectional view of the projector-type vehicular lamp according to the first embodiment when the high-beam light distribution pattern is formed, and FIG. 6 is a cross-sectional view of the projector-type vehicle according to the first embodiment when the high-beam light distribution pattern is formed. It is a perspective view of a lamp for work.

  In the projector-type vehicular lamp of the first embodiment, as shown in FIGS. 5 and 6, the solenoid 10 is energized when the high beam light distribution pattern is formed. As a result, the light source 1 and the first reflector 2 are rotated against the spring 11 in the clockwise direction of FIG. Specifically, the light source 1 is disposed in the vicinity of the focal points of the second reflector 5 and the fourth reflector 7.

  Furthermore, in the projector-type vehicle lamp of the first embodiment, when the solenoid 10 is energized when the high-beam light distribution pattern is formed, the light source 1 and the first reflector 2 are driven and connected via the gears 12 and 13. The shade 3 and the third reflector 6 are rotated against the spring 11 counterclockwise in FIG. Specifically, the shade 3 is retracted from the vicinity of the focal point F of the projection lens 4, and the third reflector 6 is disposed in the vicinity of the focal point F of the projection lens 4.

  FIG. 7 is a diagram showing an optical path of light emitted from the light source 1 and reflected by the first reflector 2 when the high beam light distribution pattern is formed. FIG. 8 is a second reflector 5 emitted from the light source 1 when the high beam light distribution pattern is formed. FIG. 6 is a diagram illustrating an optical path of light reflected by the fourth reflector 7. Specifically, FIG. 7A is a diagram showing an optical path of light reflected by a portion of the first reflector 2 above the light source 1. FIG. 7B is a diagram showing an optical path of light reflected by a portion below the light source 1 in the first reflector 2. FIG. 8A shows the optical path of the light reflected by the second reflector 5. FIG. 8B is a diagram showing an optical path of light reflected by the fourth reflector 7.

  FIG. 9 is a diagram showing a high beam light distribution pattern PH of the projector-type vehicle lamp according to the first embodiment. Specifically, FIG. 9A is a diagram showing the entire high beam light distribution pattern PH of the projector-type vehicle lamp according to the first embodiment. FIG. 9B is a diagram showing the light P1 that is blocked by the shade 3 when the low-beam light distribution pattern is formed, among the light constituting the high-beam light distribution pattern PH. FIG. 9C is a diagram showing the reflected light P2 from the second reflector 5 and the fourth reflector 7 in the light constituting the high beam light distribution pattern PH.

  In the projector-type vehicle lamp of the first embodiment, as shown in FIG. 7A, when forming the high-beam light distribution pattern, as in forming the low-beam light distribution pattern shown in FIG. The light source 1 is disposed in the vicinity of the first focal point of the spheroid reflection surface of the first reflector 2, and the focal point F of the projection lens 4 is disposed in the vicinity of the second focal point of the spheroid reflection surface of the first reflector 2. . Therefore, of the light emitted upward from the light source 1, the light reflected by the first reflector 2 is condensed near the focal point F of the projection lens 4 and is irradiated from the projection lens 4. Further, as shown in FIG. 7B, among the light emitted downward from the light source 1, the light reflected by the first reflector 2 is condensed in the vicinity of the focal point F of the projection lens 4, Irradiated from the projection lens 4.

  Specifically, in the projector-type vehicle lamp according to the first embodiment, as shown in FIGS. 7A and 7B, when the high-beam light distribution pattern is formed, the light source 1 is shown in FIG. 3B, the reflected light from the first reflector 2 is reflected on the low beam for the low beam shown in FIGS. 3A and 3B. Irradiated upwards than when forming the light distribution pattern. Therefore, in the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 9A and 9B, the high-beam light distribution pattern PH is higher than the low-beam light distribution pattern PL shown in FIG. Is also formed as a whole shifted upward.

  In the projector-type vehicle lamp of the first embodiment, as shown in FIG. 3B, a part of the reflected light from the first reflector 2 is blocked by the shade 3 when the low beam light distribution pattern is formed. On the other hand, as shown in FIG. 7B, when the light distribution pattern for high beam is formed, the shade 3 is retracted from the vicinity of the focal point F of the projection lens 4, so that the reflected light from the first reflector 2 is reflected by the shade. Irradiated without being blocked by 3. Therefore, at the time of forming the high beam light distribution pattern, as shown in FIGS. 9A and 9B, the light P1 that has been blocked by the shade 3 at the time of forming the low beam light distribution pattern is irradiated. A cut-off line is not formed on the upper edge of the pattern PH.

  Furthermore, in the projector-type vehicle lamp of the first embodiment, the reflection surface of the second reflector 5 is constituted by a spheroid reflection surface. Specifically, as shown in FIG. 8A, when the high beam light distribution pattern is formed, the light source 1 is disposed in the vicinity of the first focal point of the spheroid reflection surface of the second reflector 5, and the second reflector 5 The focal point F of the projection lens 4 is disposed in the vicinity of the second focal point of the spheroid reflection surface. Therefore, the reflected light from the second reflector 5 is condensed in the vicinity of the focal point F of the projection lens 4. As a result, as shown in FIGS. 8A and 9C, the reflected light P2 from the second reflector 5 is emitted from the projection lens 4 as strong light.

  Specifically, in the projector-type vehicle lamp of the first embodiment, as shown in FIG. 8A, the second reflector 5 is in front of the focal point F of the projection lens 4 (left side of FIG. 8A). It is extended to. Therefore, in the second reflector 5, the reflected light from the portion 5a on the front side of the focal point F of the projection lens 4 becomes light that travels backward (rightward in FIG. 8A). Therefore, in the projector-type vehicle lamp according to the first embodiment, the third reflector 6 is disposed in the vicinity of the focal point F of the projection lens 4 when the light distribution pattern for high beam is formed in order to effectively use the light traveling backward. Is done. As a result, the reflected light traveling backward (rightward in FIG. 8A) from the portion 5a in front of the focal point F of the projection lens 4 in the second reflector 5 is reflected by the third reflector 6, FIG. As shown in (C), the projection lens 4 emits the reflected light P2.

  In the projector-type vehicle lamp of the first embodiment, the reflecting surface of the fourth reflector 7 is constituted by a rotating paraboloidal system or a spheroidal compound reflecting surface. Specifically, as shown in FIG. 8B, the light source 1 is disposed in the vicinity of the first focal point of the composite reflecting surface of the fourth reflector 7 when the high-beam light distribution pattern is formed, and the fourth reflector 7. Is disposed near the side of the second focal point of the composite reflecting surface. Therefore, the light emitted from the light source 1 is reflected by the fourth reflector 7, and the reflected light from the fourth reflector 7 is near the side of the light source 1 (specifically, before the light source 1 shown in FIG. 8B). The light is condensed on the second focal point of the composite reflecting surface of the fourth reflector 7 on both sides of the side and the rear side, and then diffused light is reflected by the first reflector 2, and then the focal point of the projection lens 4. The light is condensed in the vicinity of F and irradiated from the projection lens 4. That is, the light diffused from the second focal point of the composite reflecting surface of the fourth reflector 7 is irradiated from the projection lens 4 through an optical path substantially similar to the light emitted from the light source 1. As a result, as shown in FIGS. 8B and 9C, the reflected light P2 from the fourth reflector 7 is emitted from the projection lens 4 as strong light.

  In other words, in the projector-type vehicle lamp of the first embodiment, the light source 1 and the first reflector 2, and the shade 3 and the third reflector 6 form a low beam light distribution pattern as shown in FIGS. 2 and the high beam position shown in FIGS. 5 and 6 for forming the high beam light distribution pattern, as shown in FIGS. 2 and 6, mechanically interlocked with each other. It is configured to be rotatable. Therefore, according to the projector-type vehicular lamp of the first embodiment, the light source 1 and the first reflector 2 and the rotation control of the shade 3 and the third reflector 6 are performed separately. The rotation control of the first, first reflector 2, shade 3, and third reflector 6 can be simplified.

  Furthermore, in the projector-type vehicle lamp of the first embodiment, the light source 1, the first reflector 2, the shade 3, and the third reflector 6 are moved from the low beam position shown in FIGS. 1 and 2 to FIGS. When it is moved to the high beam position shown, the entire light distribution pattern moves upward as shown in FIGS. 4 and 9A. Therefore, according to the projector-type vehicle lamp of the first embodiment, the upper portion of the high-beam light distribution pattern PH is made brighter than when the entire light distribution pattern does not move upward when switching from the low beam to the high beam. Can do. That is, according to the projector-type vehicle lamp of the first embodiment, it is possible to illuminate far away when forming the high-beam light distribution pattern, rather than when the entire light distribution pattern does not move upward when switching from the low beam to the high beam. it can.

  Further, in the projector type vehicle lamp of the first embodiment, as shown in FIG. 8A, when the light source 1, the first reflector 2, the shade 3, and the third reflector 6 are arranged at the high beam position. A second reflector 5 for condensing the light from the light source 1 in the vicinity of the focal point F of the projection lens 4 extends to the front side (left side in FIG. 8A) from the focal point F of the projection lens 4. Yes. Further, a third reflector 6 for reflecting light that is not directed toward the projection lens 4 out of the reflected light from the second reflector 5 and entering the projection lens 4 is disposed in the vicinity of the focal point F of the projection lens 4. ing. That is, in the projector-type vehicle lamp of the first embodiment, the reflected light from the portion 5a on the front side (left side in FIG. 8A) of the second reflector 5 with respect to the focal point F of the projection lens 4 is 3 is reflected by the reflector 6 and is incident on the projection lens 4.

  Therefore, according to the projector type vehicle lamp of the first embodiment, the light source 1 radiates the portion 5a of the second reflector 5 on the front side (left side in FIG. 8A) of the projection lens 4 from the focal point F. The used light can be used effectively. That is, according to the projector-type vehicle lamp of the first embodiment, the front side of the second reflector 5 with respect to the focal point F of the projection lens 4 (the left side of FIG. 8A) when the high-beam light distribution pattern is formed. As compared with the case where the light emitted from the light source 1 is not effectively used in the portion 5a, the utilization efficiency of the light emitted from the light source 1 can be improved, and the light emitted from the projection lens 4 can be brightened. .

  Specifically, in the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 6 and 8A, light that is not directed toward the projection lens 4 out of the reflected light from the second reflector 5 is detected. A third reflector 6 for reflecting and entering the projection lens 4 is formed integrally with the shade 3. Furthermore, in the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 3A and 3B, the light source 1, the first reflector 2, the shade 3, and the third reflector 6 are in the low beam position. When the shade 3 is disposed in the vicinity of the focal point F of the projection lens 4 on which the reflected light from the first reflector 2 is condensed, the third reflector 6 is moved to the first reflector 2. Is retracted to a position off the optical path of the reflected light from.

  Therefore, according to the projector-type vehicle lamp of the first embodiment, the third reflector 6 and the shade 3 are not integrated, and the position control of the third reflector 6 and the shade 3 is performed separately. In addition, the position control of the third reflector 6 and the shade 3 can be simplified.

  Furthermore, in the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 1 and 5, the second reflector extends to the front side (left side in FIGS. 1 and 5) from the focal point F of the projection lens 4. 5 is not integrated with the light source 1 and the first reflector 2 that can rotate around the rotation shaft 8 but as a fixed reflector fixed to the housing of a projector-type vehicle lamp, for example. . In other words, in the projector-type vehicle lamp of the first embodiment, the relatively large and heavy second reflector 5 that extends to the front side (the left side in FIGS. 1 and 5) of the focal point F of the projection lens 4 is a light source. It is not configured as a movable reflector that can rotate integrally with the first and first reflectors 2, but as a fixed reflector.

  Therefore, according to the projector-type vehicle lamp of the first embodiment, the first reflector 2 extending to the front side (the left side in FIGS. 1 and 5) from the focal point F of the projection lens 4 is integrated with the light source 1. As compared with the case where the light source 1 and the first reflector 2 are rotated, a solenoid 10 having a relatively small driving force can be used as a result of rotating the light source 1 and the first reflector 2. be able to.

  In the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 1 and 5, the projection lens 4 is integrated with the light source 1 and the first reflector 2 that can rotate around the rotation shaft 8. For example, it is configured as a fixed lens fixed to a housing of a projector-type vehicle lamp. In other words, in the projector-type vehicle lamp of the first embodiment, the relatively heavy projection lens 4 is not configured as a movable lens that can rotate integrally with the light source 1 and the first reflector 2, but is fixed. It is configured as a lens.

  Therefore, according to the projector-type vehicle lamp of the first embodiment, as the solenoid 10 for rotating the light source 1 and the first reflector 2 as compared with the case where the projection lens 4 is rotated integrally with the light source 1, A lamp having a relatively small driving force can be used, and as a result, the cost of the entire projector-type vehicle lamp can be suppressed.

  Furthermore, in the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 7A, 7B, 8A, and 8B, when the light distribution pattern for high beam is formed. The shade 3 is retracted to a position deviated from the optical path of the reflected light from the first reflector 2, the second reflector 5 and the fourth reflector 7. Therefore, according to the projector-type vehicle lamp of the first embodiment, unlike the case where the shade 3 is arranged on the optical path of the reflected light from the reflector when the high-beam light distribution pattern is formed, FIG. 9A and FIG. As shown in FIG. 9B, a light distribution pattern without a cut-off line can be formed as the high beam light distribution pattern PH. As a result, according to the projector-type vehicle lamp of the first embodiment, as shown in FIGS. 9A and 9B, the upper portion (P1) of the high beam light distribution pattern PH is brightened. Can do.

  In the projector-type vehicle lamp of the first embodiment, as shown in FIG. 8B, when the light source 1, the first reflector 2, the shade 3, and the third reflector 6 are arranged at the high beam position. That is, the fourth reflector 7 for condensing the light from the light source 1 in the vicinity of the light source 1 when the light distribution pattern for high beam is formed is lower than the light source 1 (lower side in FIG. 8B) and It arrange | positions at the front side (left side of FIG. 8 (B)). That is, in the projector-type vehicular lamp according to the first embodiment, when the high-beam light distribution pattern is formed, the light source 1 is on the lower side (the lower side in FIG. 8B) and the front side (the left side in FIG. 8B). The emitted light is collected near the light source 1 by the fourth reflector 7, then diffused and then reflected by the first reflector 2, and then collected near the focal point F of the projection lens 4. And then irradiated through the projection lens 4.

  Therefore, according to the projector-type vehicular lamp of the first embodiment, when the high-beam light distribution pattern is formed, the light source 1 is below (the lower side in FIG. 8B) and the front side (the left side in FIG. 8B). The utilization efficiency of the light emitted from the light source 1 can be improved as compared with the case where the light emitted in (1) is not effectively used. Specifically, according to the projector-type vehicle lamp of the first embodiment, the reflector is arranged below the light source 1 (the lower side in FIG. 8B) and on the front side (the left side in FIG. 8B). The use efficiency of light emitted from the light source 1 can be improved when the high beam light distribution pattern is formed, and the light irradiated from the projection lens 4 can be brightened when the high beam light distribution pattern is formed. Can do.

  In the projector-type vehicular lamp of the first embodiment, as shown in FIG. 1, when forming a low beam light distribution pattern, the central axis of the light source 1 (the central axis of the bulb) and the central axis of the projection lens 4 (the optical axis) Although the light source 1 is arranged so as to coincide with each other, in the projector-type vehicle lamp of the second embodiment, instead of forming the light distribution pattern for low beam, the central axis of the light source (the central axis of the bulb) It is also possible to arrange the light source so that the central axis (optical axis) of the projection lens 4 and the projection lens 4 are orthogonal.

  Further, in the projector-type vehicle lamp of the first embodiment, as shown in FIG. 6, the light source 1, the first reflector 2, the shade 3, and the third reflector 6 are rotated by the solenoid 10, but the third embodiment In the projector-type vehicular lamp in the form, instead, the light source 1, the first reflector 2, the shade 3, and the third reflector 6 can be rotated by any driving means such as a motor.

  In the fourth embodiment, the first to third embodiments described above can be appropriately combined.

It is sectional drawing which looked at the projector type vehicle lamp of 1st Embodiment at the time of low beam light distribution pattern formation from the right side. 1 is a perspective view of a projector-type vehicle lamp according to a first embodiment when a low beam light distribution pattern is formed. FIG. It is the figure which showed the optical path of the light which was radiated | emitted from the light source 1 at the time of low beam light distribution pattern formation, and was reflected by the 1st reflector 2. FIG. It is the figure which showed the light distribution pattern PL for low beams of the projector type vehicle lamp of 1st Embodiment. It is sectional drawing which looked at the projector type vehicle lamp of 1st Embodiment at the time of the high beam light distribution pattern formation from the right side. 1 is a perspective view of a projector-type vehicle lamp according to a first embodiment when a high beam light distribution pattern is formed. FIG. It is the figure which showed the optical path of the light which was radiated | emitted from the light source 1 at the time of high light distribution pattern formation, and was reflected by the 1st reflector 2. FIG. It is the figure which showed the optical path of the light which was radiated | emitted from the light source 1 at the time of high light distribution pattern formation, and was reflected by the 2nd reflector 5 and the 4th reflector 7. FIG. It is the figure which showed the high beam light distribution pattern PH of the projector type vehicle lamp of 1st Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source 2 Reflector 3 Shade 4 Projection lens 5 2nd reflector 6 3rd reflector 7 4th reflector 8, 9 Rotating shaft 10 Solenoid 11 Spring 12, 13 Gear

Claims (5)

A light source, a first reflector for reflecting light from the light source, a shade for blocking part of the light from the first reflector, and a projection lens for projecting light not blocked by the shade And
The light source, the first reflector, and the shade are mechanically connected to each other between a low beam position for forming a low beam light distribution pattern and a high beam position for forming a high beam light distribution pattern. It is configured to be able to rotate in conjunction,
In the projector-type vehicle lamp in which the entire light distribution pattern moves upward when the light source, the first reflector, and the shade are moved from the low beam position to the high beam position.
When the light source, the first reflector, and the shade are arranged at a high beam position, a second reflector for condensing light from the light source in the vicinity of the focal point of the projection lens is formed from the focal point of the projection lens. Is also extended to the front side,
A third reflector for reflecting light that is not directed toward the projection lens out of the reflected light from the second reflector and entering the projection lens is provided,
Forming the third reflector integrally with the shade;
When the light source, the first reflector, and the shade are disposed at a low beam position, the third reflector is retracted to a position off the optical path of the reflected light from the first reflector,
A projector-type vehicular lamp characterized in that when the light source, the first reflector, and the shade are arranged at a high beam position, the third reflector is arranged in the vicinity of the focal point of the projection lens.   The projector-type vehicle lamp according to claim 1, wherein the second reflector is configured as a fixed reflector that is not integrated with the light source and the first reflector.   3. The projector-type vehicle lamp according to claim 1, wherein the projection lens is configured as a fixed lens that is not integrated with the light source and the first reflector.   The said shade is retracted | saved to the position remove | deviated from the optical path of the reflected light from a said 1st reflector and a said 2nd reflector at the time of high light beam distribution pattern formation. Projector type vehicle lamp.   A fourth reflector for condensing light from the light source in the vicinity of the light source when the light source, the first reflector, and the shade are arranged at a high beam position is below and forward of the light source. The projector-type vehicular lamp according to any one of claims 1 to 4, wherein the lamp is disposed.

Images