JP4697215B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp that uses a semiconductor light source as a light source. In particular, the present invention relates to a vehicular lamp that swivels (moves) a light distribution pattern left and right by rotating a semiconductor-type light source about a vertical axis or substantially around a vertical axis.

  This type of vehicular lamp is conventionally known (for example, Patent Document 1). Hereinafter, a conventional vehicle lamp will be described. A conventional vehicle lamp includes a semiconductor light emitting element, a projection lens fixed to the front surface of the semiconductor light emitting element, an additional lamp unit, and swivel means for rotating the additional lamp unit around a vertical axis, Is provided. When the light emitting chip of the semiconductor light emitting element is turned on and emitted, light from the light emitting chip is transmitted through the projection lens and irradiated in a predetermined direction as a predetermined light distribution pattern. By driving the swivel means, the light distribution pattern emitted from the additional lamp unit moves in the left-right direction.

  However, in the conventional vehicular lamp, the additional lamp unit is composed of an integrated semiconductor light emitting element and projection lens, so that the additional lamp unit tends to be large and heavy. For this reason, the conventional vehicular lamp requires a large space in order to rotate the additional lamp unit in which the semiconductor light emitting element and the projection lens are integrally enlarged around the vertical axis. The lamp becomes larger. Further, the conventional vehicular lamp requires a high output (high driving force) swivel means in order to rotate the additional lamp unit in which the weight of the semiconductor light emitting element and the projection lens is increased. Yes, the swivel means is expensive and large, and the manufacturing cost is high.

JP-A-2005-141918

  The problem to be solved by the present invention is that, in the conventional vehicular lamp, the lamp is enlarged and the manufacturing cost is increased.

  The present invention (invention according to claim 1) includes a semiconductor-type light source having a light emitter, and a holding member that holds the semiconductor-type light source so as to be rotatable about a vertical axis or a substantially vertical axis passing through the light emitter or its vicinity. Rotating drive member for rotating the semiconductor type light source about the vertical axis or about the vertical axis, and the focal point is located at or near the light emitting body of the semiconductor type light source, and the direct light from the light emitting body of the semiconductor type light source is expanded to the left and right A lens that emits light as a light distribution pattern and has a longitudinal cross-sectional shape that is the cross-sectional shape of an aspheric lens, and a cylindrical surface that is formed by rotating the cross-section of the aspheric lens around a vertical axis or a nearly vertical axis that passes through or near the focal point. And a lens in a shape.

  Further, according to the present invention (the invention according to claim 2), the range in which the aspherical lens cross section of the cylindrical lens is rotated about the vertical axis or about the vertical axis is such that the semiconductor light source is rotated about the vertical axis or about the vertical axis. At least either the incident surface side or the emitting surface side of light from the light emitter of the semiconductor light source of the cylindrical lens coincides with or substantially coincides with the radiation range of the light emitted from the light emitter of the semiconductor light source when In one of the predetermined ranges, a lens having a prism element group that spreads light to the left and right is provided.

  Furthermore, the present invention (invention according to claim 3) is a light distribution pattern in which the light emitter of the semiconductor light source has a rectangular shape, and the light distribution pattern emitted from the cylindrical lens has a cut-off line, A light distribution pattern that is direct light from a light emitter of a semiconductor-type light source, and a light emission image of a rectangular light emitter is expanded left and right by a cylindrical lens, and one side of the rectangular light emitter is cut off-line. It is characterized by that.

  In the vehicular lamp according to the present invention (the invention according to claim 1), when the light emitter of the semiconductor light source is turned on, the direct light radiated from the light emitter of the semiconductor light source passes through the cylindrical lens and is When the rotary drive member is driven, the semiconductor-type light source rotates about the vertical axis or almost the vertical axis passing through the light emitter with respect to the holding member, and is expanded to the left and right. The light distribution pattern swivels right and left. Thus, since the vehicular lamp of the present invention (the invention according to claim 1) rotates the semiconductor light source with respect to the holding member, the additional lamp unit in which the semiconductor light emitting element and the projection lens are integrated is provided. Compared to conventional vehicle lamps that rotate about the vertical axis, the space for rotating the semiconductor light source about the vertical axis or about the vertical axis can be reduced, and the vehicle lamp is reduced in size accordingly. Can be In addition, since the vehicular lamp of the present invention (the invention according to claim 1) rotates the semiconductor-type light source with respect to the holding member, the additional lamp unit in which the semiconductor light emitting element and the projection lens are integrated as a vertical axis. Compared with conventional vehicular lamps that rotate around, the output (driving force) of the rotary drive member that rotates the light weight semiconductor light source can be reduced, and the rotary drive member can be made cheaper and smaller accordingly. Therefore, the manufacturing cost can be reduced.

  In addition, in the vehicular lamp of the present invention (the invention according to claim 1), the rotational axis of the semiconductor light source is a vertical axis or a substantially vertical axis passing through the light emitter, while the aspherical lens cross section of the cylindrical lens Is a vertical axis or substantially vertical axis passing through or near the focal point, and the focal point of the cylindrical lens is located at or near the light emitter of the semiconductor light source. For this reason, in the vehicular lamp of the present invention (the invention according to claim 1), the rotation axis of the semiconductor light source and the focal point of the cylindrical lens coincide with each other or substantially coincide with each other. On the other hand, even when the cylindrical lens is fixed, there is no deviation between the light emitter of the semiconductor light source and the focal point of the cylindrical lens. Even if there is a discrepancy, the discrepancy is minimal. As a result, in the vehicular lamp of the present invention (the invention according to claim 1), the semiconductor light source rotates even if the semiconductor light source rotates about the vertical axis or substantially around the vertical axis, while the cylindrical lens is fixed. As with conventional vehicular lamps that rotate an additional lamp unit with an integral projection lens around the vertical axis, there is no deviation or distortion in the light distribution pattern that is swiveled to the left and right. It can be maintained with the same accuracy as a conventional vehicle lamp.

  Further, the vehicular lamp according to the present invention (the invention according to claim 2) is configured such that when the semiconductor light source is swiveled left and right by the prism element group of the lens separate from the cylindrical lens, the left and right light emitted from the cylindrical lens is left and right. The left end portion or the right end portion of the light distribution pattern expanded to the left is further widened to the left or right. As a result, the vehicular lamp of the present invention (the invention according to claim 2) can obtain a wide light distribution pattern that is widened to the left and right even when the rotation angle of the semiconductor light source is small. As described above, the vehicular lamp according to the present invention (the invention according to claim 2) can reliably obtain a wide light distribution pattern spread to the left and right even if the semiconductor light source is rotated small. The output (driving force) of the rotation driving member that rotates the rotation member can be reduced, and the rotation driving member can be reduced in size and cost accordingly, so that the manufacturing cost can be reduced. Moreover, the vehicular lamp according to the present invention (the invention according to claim 2) is widened to the left and right because a wide light distribution pattern that is widened to the left and right is reliably obtained even when the semiconductor light source is rotated slightly. It is possible to quickly swivel the light distribution pattern to the left and right, and it is possible to respond quickly to AFS (Adaptive Front Lighting System). In other words, the light distribution pattern expanded to the left and right can be quickly swiveled to the left and right in accordance with the traveling state of the vehicle to change the following.

  Furthermore, in the vehicular lamp of the present invention (the invention according to claim 3), the light distribution pattern emitted from the cylindrical lens is direct light from the light emitter of the semiconductor light source, and the rectangular light emitter The light distribution pattern is a light distribution pattern in which a light emission image is expanded left and right with a cylindrical lens, and one side of a rectangular light emitter is a cut-off line. For this reason, the vehicular lamp according to the present invention (the invention according to claim 3) has no shift or distortion in the cut-off line of the light distribution pattern spread to the left and right, and the light distribution pattern cut to the left and right is swiveled. No off-line or distortion even offline. As a result, the vehicular lamp according to the present invention (the invention according to claim 3) has a light distribution pattern spread to the left and right as a light distribution pattern for an additional lamp that irradiates the left or right side of the main light distribution pattern. Can improve the visibility of pedestrians on the side of the vehicle when traveling at low speeds, for example, shoulders, and contribute to traffic safety. Further, in the vehicular lamp according to the present invention (the invention according to claim 3), when the light distribution pattern spread left and right is used as a fog lamp light distribution pattern that irradiates the front side of the main light distribution pattern, bad weather may occur. Visibility on the near side of the vehicle when traveling can be improved, which can contribute to traffic safety. Furthermore, in the vehicular lamp according to the present invention (the invention according to claim 3), when the light distribution pattern spread to the left and right is a light distribution pattern for spotlights that irradiates near the cutoff line of the main light distribution pattern. The visibility on the far side of the vehicle when traveling at high speed can be improved, contributing to traffic safety.

  Hereinafter, three examples of the embodiments of the vehicular lamp according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In the claims, “up, down, left, right” and “front, back, up, down, left, right” in this specification refer to the vehicle “when the vehicle lamp is mounted on the vehicle”. Front, back, top, bottom, left, right ". In the drawings, the symbol “F” indicates the forward direction of the vehicle (automobile) (the forward direction of the automobile). The symbol “B” indicates the backward direction of the vehicle. Reference sign “U” indicates an upward direction as viewed from the driver side. Reference sign “D” indicates a downward direction as viewed from the driver side. The symbol “L” indicates the left direction when the front direction is viewed from the driver side. The symbol “R” indicates the right direction when the front direction is viewed from the driver side. The symbol “VU-VD” indicates vertical lines on the top and bottom of the screen. Reference sign “HL-HR” indicates horizontal lines on the left and right of the screen.

  1 to 7 show Embodiment 1 of a vehicular lamp according to the present invention. Hereinafter, the configuration of the vehicular lamp according to the first embodiment will be described. In FIG. 1, reference numeral 100 denotes a vehicle headlamp (automobile headlamp device) including the vehicle lamp 1 according to the first embodiment. The vehicle headlamps 100 are respectively provided on the left and right of the front portion of the vehicle. Hereinafter, the vehicle headlamp 100 equipped on the right side of the front portion of the vehicle will be described. In addition, the structure of the vehicle headlamp mounted on the left side of the front portion of the vehicle is substantially symmetrical. Moreover, the said vehicle headlamp 100 is used for the left-hand traffic of Japan, and the light distribution pattern shown in FIG. 7 is obtained. A vehicular headlamp used for left-hand traffic in Europe can obtain a light distribution pattern substantially similar to the light distribution pattern shown in FIG. Conversely, a vehicle headlamp used for right-hand traffic in Europe and right-hand traffic in North America can obtain a light distribution pattern that is substantially opposite to the light distribution pattern shown in FIG.

  As shown in FIG. 1, the vehicle headlamp 100 is disposed in the lamp chamber 101 and a lamp housing 102 and a lamp lens (for example, a transparent outer lens) 103 that divide the lamp chamber 101. The projector-type headlamp 104, the vehicular lamp 1 according to the first embodiment, and the inner panel (or inner housing or extension) 113 are provided.

  The headlamp 104 and the vehicular lamp 1 according to the first embodiment include a fixing member via a bracket 114 and an optical axis adjusting mechanism (an optical axis adjusting mechanism including an adjusting screw and screw mounting 115 and a pivot mechanism 116). Is attached to the lamp housing 102 so that the optical axis can be adjusted. In some cases, the vehicle headlamp 100 is attached to a vehicle body as a fixed component via an optical axis adjustment mechanism so that the optical axis can be adjusted. In this case, the headlamp 104 and the vehicular lamp 1 according to the first embodiment are fixed to the lamp housing 102.

  In the lamp chamber 101, there may be a case where lamps (lamp units) other than the headlamp 104 and the vehicular lamp 1 according to the first embodiment are arranged. The inner panel 113 disposed in the lamp chamber 101 covers the optical axis adjustment mechanism and the like so that the optical axis adjustment mechanism and the like in the lamp chamber 101 cannot be seen from the lamp lens 103 side. It improves the appearance. The inner panel 113 prevents light emitted from the headlamp 104 and the vehicular lamp 1 according to the first embodiment from leaking in directions other than a predetermined direction.

  As shown in FIG. 1, the headlamp 104 has a reflector 106 having a free curved surface (NURBS curved surface) or a spheroid reflecting surface 105 based on an ellipse (reference, keynote), and is attachable to and detachable from the reflector 106. A discharge lamp 107 as a light source that is attached and has a light emitting portion (discharge arc portion) positioned at or near the first focal point of the reflecting surface 105, a projection lens (condensing lens, convex lens) 108, and the reflecting surface 105 A shade 109 positioned at or near the second focal point of the projection lens 108 or at or near the lens focal point of the projection lens 108, and a frame (or holder or bracket) 110 that holds the reflector 106 and the projection lens 108 and the shade 109. Is. In addition, the code | symbol 111 in FIG. 1 is the cap attached to the edge of the through-hole 112 for replacement | exchange of the said discharge lamp 107 provided in the said lamp housing 102 so that attachment or detachment is possible.

  The headlamp 104 irradiates the front of the vehicle with a passing light distribution pattern LP as a main light distribution pattern shown in FIG. That is, the discharge lamp 107 is turned on. Then, the light emitted from the light emitting part of the discharge lamp 107 is reflected by the reflecting surface 105 of the reflector 106 toward the projection lens 108. A part of the reflected light is cut off by the shade 109, and the remaining reflected light is transmitted through the projection lens 108 and irradiated to the front of the vehicle as the passing light distribution pattern LP. A lower horizontal cut-off line CL1, an elbow point E, an oblique cut-off line CL2, and an upper horizontal cut-off line CL3 are formed on the upper edge of the light distribution pattern LP for passing by the upper edge of the shade 109, respectively. Has been. The lower horizontal cut-off line CL1 is located on the oncoming lane side, and is arranged below the left and right horizontal lines HL-HR of the screen so as not to give glare to the oncoming vehicle. . Further, the upper horizontal cut-off line CL3 is located on the own lane side, and the portion from the center of the upper horizontal cut-off line CL3 is located above the left and right horizontal line HL-HR of the screen, so that It is comprised so that visibility of may be maintained.

  As shown in FIGS. 1 to 5, the vehicular lamp 1 includes a semiconductor light source 2, a holding member 3, a rotation driving member 4, a main lens 5 that is a cylindrical lens, and a prism element group 6. The auxiliary lens 7 as a lens to be provided and a heat sink member 8 are provided.

  As the semiconductor-type light source 2, for example, a self-luminous semiconductor-type light source (LED in this embodiment 1) such as LED, EL (organic EL) is used. The semiconductor light source 2 includes a substrate 9, a light emitting body 10 of a light source chip (semiconductor chip) having a small rectangular shape (square shape) fixed to one surface of the substrate 9, and a light transmitting member that covers the light emitting body 10. 11 and a connector or harness (not shown) connected to a power source (not shown). The semiconductor light source 2 is fixed to the heat sink member 8 via a holder member (not shown) or directly. The light emitter (light emitting portion) of the semiconductor-type light source 2 is disposed at or near the lens focal point FL of the main lens 5. From the light emitter of the semiconductor-type light source 2, light L1 is emitted (emitted) within a range of a radiation angle (emission angle) θ.

  The holding member 3 makes the semiconductor-type light source 2 and the heat sink member 8 a vertical axis or a substantially vertical axis (hereinafter simply referred to as “vertical axis”) that passes through the light emitter 10 of the semiconductor-type light source 2 or the vicinity thereof. It is held so as to be rotatable around V1. The holding member 3 includes a rotation-side holder 12, a rotation shaft 13, and a fixed-side holder 14.

  The rotating side holder 12 has a U-shaped cross section. A quadrangular through hole 15 is provided in the center of the center (intermediate) vertical plate portion of the rotation side holder 12. The heat sink member 8, which is integrated with the semiconductor light source 2, is fixed to the edge of the through hole 15. Further, the rotary shaft 13 is fixed on the vertical axis V1 to the upper and lower surfaces of the upper and lower horizontal plate portions of the rotary holder 12, respectively.

  The fixed-side holder 14 has a semi-cylindrical shape on the front side, a hollow 16 in which a part 16 on the front side is open, and the rear side, the upper and lower sides, and the left and right sides are closed. The rotary shaft 13 is rotatably attached to the closed portions on the upper and lower surfaces of the fixed side holder 14 via a bearing member 17. As a result, the semiconductor light source 2 is held by the holding member 3 so as to be rotatable about the vertical axis V1 passing through the light emitter 10 or the vicinity thereof.

  The rotation drive member 4 is attached to the bracket 114. As shown in FIGS. 6 (A), (B), (C) and FIGS. 7 (B), (C), (D), the rotary drive member 4 is the first embodiment according to the traveling state of the vehicle. The irradiation direction of the additional lamp light distribution patterns CP1, CP2, and CP3 irradiated from the vehicular lamp 1 is changed in accordance with the above. The rotational drive member 4 is composed of a stepping motor (not shown) driven by control of a control means (not shown) and a rotational force transmission mechanism for transmitting the rotational force of the stepping motor to the rotary shaft 13. Has been. When the stepping motor is driven by the control means, the semiconductor light source 2, the heat sink member 8, and the rotating side holder 12 (hereinafter simply referred to as “semiconductor light source 2”) Rotate to.

  A detection means (not shown) is connected to the control means. The detection means detects a change in a road environment, map information, and a traveling state of the vehicle under a vehicle traveling environment, and outputs a detection signal to the control means. Examples of the detection signal of the detection means include a steering angle signal, a vehicle speed signal, and a navigation signal. The control means turns on and off the semiconductor light source 2 of the vehicular lamp 1 according to the first embodiment based on a detection signal from the detection means. The control means outputs a pulse signal (control signal) for controlling the driving of the stepping motor to the stepping motor based on a detection signal from the detection means. The stepping motor is driven based on a pulse signal from the control means. As a result, the semiconductor light source 2 rotates left and right around the vertical axis V. The control means may turn on / off the discharge lamp 107 of the headlamp 104 of the vehicle headlamp 100 based on a detection signal from the detection means.

  The main lens 5 is fixed to closed portions on both the upper and lower surfaces of the fixed holder 14. The main lens 5 is disposed in the fixed-side holder 14 so as to face the semiconductor-type light source 2 and the front-side opening 16 of the fixed-side holder 14. The focal point FL of the main lens 5 is located at or near the light emitter 10 of the semiconductor-type light source 2. The main lens 5 is light L1 (direct light) emitted from the light emitter 10 of the semiconductor-type light source 2 and is a light distribution for the additional lamp in which the light emission image of the rectangular light emitter 10 is expanded left and right. It is a lens that emits light as patterns CP1, CP2, and CP3.

  The main lens 5 has a vertical cross-sectional shape that is a cross-sectional shape of an aspherical lens, and the aspherical lens cross-section has a vertical axis or a substantially vertical axis (hereinafter simply referred to as “a vertical axis” passing through the focal point FL of the main lens 5 or the vicinity thereof. It is a cylindrical lens that is rotated around V2 (referred to as the “vertical axis”). The front side of the vertical cross section of the main lens 5 (external side, the emission surface side of the light L1 from the light emitter 10) forms a convex aspheric surface, while the rear side of the vertical cross section of the main lens 5 (the semiconductor). The side facing the mold light source 2 and the incident surface side of the light L1 from the light emitter 10 is a flat aspheric surface (plane). The rear side of the longitudinal section of the main lens 5 may be a convex aspheric surface having a smaller curvature than the front side (the curvature radius is larger than the front side). The vertical axis V1 passing through the light emitter 10 or the vicinity thereof and the vertical axis V2 passing through the focal point FL or the vicinity thereof coincide or substantially coincide.

  The light L2 emitted from the main lens 5, which is a cylindrical lens, is greatly expanded to the left and right and is substantially parallel in the vertical direction. The upper and lower edges of the additional lamp light distribution patterns CP1, CP2, and CP3 are substantially horizontal. As shown in FIGS. 6 (A), (B), (C) and FIGS. 7 (B), (C), (D), the upper edges of the additional light distribution patterns CP1, CP2, CP3, that is, the cut-off line. CL4 is positioned below the lower horizontal cut-off line CL1 of the passing light distribution pattern LP, and is positioned approximately 2.5 ° below the horizontal horizontal line HL-HR of the screen. The lower edges of the additional light distribution patterns CP1, CP2, and CP3 are located at about 7.5 ° below the horizontal horizontal line HL-HR of the screen. The upper edges of the additional lamp light distribution patterns CP1, CP2, and CP3, that is, the cut-off line CL4, are formed by one side (lower side) of the light emitting body 10 having a rectangular shape.

  The range in which the cross section of the aspherical lens of the main lens 5 which is a cylindrical lens is rotated around the vertical axis V2 is the range of the semiconductor light source 2 when the semiconductor light source 2 is rotated around the vertical axis V1. This coincides with or substantially coincides with the emission range of the light L1 emitted from the light emitter 10. In this example, the range of the main lens 5 is wider than the emission range of the light emitter 10.

  The prism element group 6 of the auxiliary lens 7 is an optical component that emits the light L2 emitted from the main lens 5 that has been expanded from side to side as light L3 that has been further expanded from side to side. The prism element group 6 of the auxiliary lens 7 has a small vertical cylindrical shape or a small vertical cylindrical shape.

  The auxiliary lens 7 having the prism element group 6 is provided on the exit surface side of the main lens 5 which is a cylindrical lens. The auxiliary lenses 7 are provided on both the left and right sides of the front side opening 16 of the fixed side holder 14.

  The vehicular lamp 1 according to the first embodiment is configured as described above, and the operation thereof will be described below.

  First, the discharge lamp 107 of the headlamp 104 of the vehicle headlamp 100 is turned on. Then, the passing light distribution pattern LP shown in FIGS. 7A, 7B, 7C, and 7D is irradiated in front of the vehicle. Further, the semiconductor light source 2 of the vehicle lamp 1 on the right side of the vehicle headlamp 100 is turned on. Then, as shown in FIGS. 6 (A), (B), (C) and FIGS. 7 (B), (C), (D), the right additional light distribution patterns CP1, CP2, CP3 are irradiated. The

  Here, when the steering handle is positioned at the neutral position (neutral position), the semiconductor light source 2 is positioned at the neutral position as shown in FIGS. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, the right lamp distribution pattern CP1 on the right side shown in FIGS. 6A and 7B is emitted from the vehicle lamp 1 on the right side of the vehicle headlamp 100. The left end of the right additional light distribution pattern CP1 shown in FIGS. 6 (A) and 7 (B) is located at about 15 ° on the right side with respect to the vertical vertical line VU-VD of the screen, and the right end is , Located about 41 ° on the right side with respect to the vertical vertical line VU-VD of the screen.

  Next, when the steering handle at the neutral position is steered to the right, the semiconductor light source 2 rotates (swivels) from the neutral position to the right (in the direction of the solid arrow in FIG. 4) about the vertical axis V1, as shown in FIG. To do. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, the vehicle lamp 1 on the right side of the vehicle headlamp 100 has a light distribution pattern substantially similar to the light distribution pattern CP1 on the right side of the additional lamp shown in FIGS. 6 (A) and 7 (B). Then, the additional light distribution pattern CP2 on the right side shown in FIGS. 6B and 7C is irradiated. The left end of the right additional light distribution pattern CP2 shown in FIGS. 6B and 7C is located at about 25 ° on the right side with respect to the vertical vertical line VU-VD of the screen, and the right end is , Located about 51 ° on the right side with respect to the vertical vertical line VU-VD of the screen.

  Then, when the steering handle steered to the right is further steered to the right, as shown in FIG. 5, the semiconductor light source 2 moves rightward from the position shown in FIG. 4 around the vertical axis V1 (in the direction indicated by the solid arrow in FIG. 5). ). Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 spread left and right, and a part of the light L2 is a prism element group. 6 is emitted as light L3 which is transmitted through the auxiliary lens 7 having 6 and further expanded to the left and right. As a result, from the vehicle lamp 1 on the right side of the vehicle headlamp 100, the right additional light distribution pattern CP1 shown in FIGS. 6 (A) and 7 (B) and FIGS. 6 (B) and 7 are used. FIG. 6C is a light distribution pattern that is further expanded to the left and right (expanded to the right side) from the right additional light distribution pattern CP2 shown in FIG. 6C, and is the right side shown in FIGS. 6C and 7D. The additional light distribution pattern CP3 is irradiated. The left end of the right additional light distribution pattern CP3 shown in FIGS. 6C and 7D is located at about 35 ° on the right side with respect to the vertical vertical line VU-VD of the screen, and the right end is , Located about 70 ° to the right of the vertical vertical line VU-VD of the screen.

  When the steering handle steered to the right is steered back to the left, the semiconductor light source 2 moves leftward from the position shown in FIG. 5 around the vertical axis V1 (the direction opposite to the solid arrow direction in FIG. 5). Further, it rotates around the vertical axis V1 from the position shown in FIG. 4 to the left (the direction opposite to the solid arrow direction in FIG. 4), and returns to the neutral position shown in FIGS. Accordingly, from the vehicle lamp 1 on the right side of the vehicle headlamp 100, the light distribution pattern CP3 on the right side shown in FIGS. 6 (C) and 7 (D) to FIG. 6 (B) and It is swiveled to the right additional light distribution pattern CP2 shown in FIG. 7C, and further from the right additional light distribution pattern CP2 shown in FIGS. 6B and 7C to FIG. 6A. Then, the light is swiveled to the additional light distribution pattern CP1 on the right side shown in FIG.

  Here, the upper edges of the right additional light distribution patterns CP1, CP2, and CP3 swiveling to the left and right, that is, the cut-off line CL4, are positioned below the lower horizontal cut-off line CL1 of the passing light distribution pattern LP, and , Located at about 2.5 ° below the horizontal horizontal line HL-HR of the screen. Further, the lower edge of the right additional light distribution pattern CP1, CP2, CP3 is located at about 7.5 ° below the horizontal horizontal line HL-HR of the screen.

  On the other hand, when a semiconductor-type light source (not shown) of a vehicle lamp (not shown) of the vehicle headlamp 100 mounted on the left side of the vehicle is turned on, a light distribution pattern for an additional lamp on the left side (not shown). ) Is irradiated. The left additional light distribution pattern on the left side is the right additional light distribution pattern CP1 on the right side shown in FIGS. 6 (A), (B), (C) and FIGS. 7 (B), (C), (D). It is the opposite of CP2 and CP3. The left additional light distribution pattern cut-off line (not shown) is approximately the same height as the right additional light distribution pattern CP1, CP2, CP3 cut off line CL4 or the right additional light distribution pattern. It is higher than the cut-off line CL4 of the light distribution patterns CP1, CP2, and CP3 and lower than the horizontal horizontal line HL-HR. The light distribution pattern for the additional light on the left side is swiveled to the left side when the steering handle at the neutral position is steered to the left, and is swiveled to the right and returned to the original state when the steering handle steered to the left is steered to the right.

  The vehicular lamp 1 according to the first embodiment is configured and operated as described above, and the effects thereof will be described below.

  In the vehicular lamp 1 according to the first embodiment, when the light emitter 10 of the semiconductor light source 2 is turned on and emitted, the direct light L1 emitted from the light emitter 10 of the semiconductor light source 2 is the main lens 5 of the cylindrical lens. And is emitted as additional light distribution patterns CP1, CP2, and CP3 that are spread left and right. Further, in the vehicular lamp 1 according to the first embodiment, when the rotation driving member 4 is driven, the semiconductor-type light source 2 rotates about the vertical axis V1 passing through the light emitter 10 with respect to the holding member 3 to the left and right. The expanded additional light distribution patterns CP1, CP2, and CP3 swivel to the left and right. Thus, since the vehicular lamp 1 according to the first embodiment rotates the semiconductor-type light source 2 with respect to the holding member 3, the additional lamp unit in which the semiconductor light emitting element and the projection lens are integrated as a vertical axis. Compared to a conventional vehicle lamp that rotates around, the space for rotating the semiconductor light source 2 around the vertical axis V1 can be reduced, and the vehicle lamp can be downsized accordingly. it can. In addition, since the vehicular lamp 1 according to the first embodiment rotates the semiconductor light source 2 with respect to the holding member 3, an additional lamp unit in which the semiconductor light emitting element and the projection lens are integrated is arranged around the vertical axis. Compared with the conventional vehicle lamp to be rotated, the output (driving force) of the rotation driving member 4 for rotating the light-weight semiconductor light source 2 can be reduced, and the rotation driving member 4 is inexpensive and small. Therefore, the manufacturing cost can be reduced.

  Moreover, in the vehicular lamp 1 according to the first embodiment, the rotation axis of the semiconductor light source 2 is a vertical axis V1 passing through the light emitter 10, while the aspherical lens section of the main lens 5 of the cylindrical lens is shown. The axis of rotation is the vertical axis V2 passing through the focal point FL or the vicinity thereof, and the focal point FL of the main lens 5 of the cylindrical lens is located at or near the light emitter 10 of the semiconductor light source 2. For this reason, in the vehicular lamp 1 according to the first embodiment, the rotation axis of the semiconductor light source 2 and the focal point FL of the main lens 5 of the cylindrical lens coincide or substantially coincide with each other. On the other hand, even if the main lens 5 of the cylindrical lens rotates around the axis V1, there is a shift between the light emitter 10 of the semiconductor light source 2 and the focal point FL of the main lens 5 of the cylindrical lens. Absent. Even if there is a discrepancy, the discrepancy is minimal. As a result, in the vehicular lamp 1 according to the first embodiment, the semiconductor light source 2 rotates around the vertical axis V1, while the cylindrical lens main lens 5 is fixed. Similar to the conventional vehicle lamp that rotates the additional lamp unit integrated with the lens around the vertical axis, there is a shift or distortion in the light distribution patterns CP1, CP2, and CP3 extended to the left and right that swivel to the left and right. In addition, the additional lamp light distribution patterns CP1, CP2, and CP3 can be maintained with the same accuracy as that of the conventional vehicle lamp.

  Further, the vehicular lamp 1 according to the first embodiment is configured such that when the semiconductor light source 2 is rotated (swiveled) left and right by the prism element group 6 of the auxiliary lens 7 separate from the main lens 5 of the cylindrical lens, The left end portion or the right end portion of the additional lamp light distribution pattern CP3 which is emitted from the main lens 5 of the shaped lens and which is expanded to the left and right is further expanded to the left or right. As a result, the vehicular lamp 1 according to the first embodiment can obtain a wide additional light distribution pattern CP3 widened to the left and right even if the rotation angle of the semiconductor light source 2 is small. As described above, the vehicular lamp 1 according to the first embodiment can reliably obtain the wide additional light distribution pattern CP3 widened to the left and right even when the semiconductor light source 2 is rotated small. The output (driving force) of the rotary drive member 4 that rotates the light source 2 can be reduced, and the rotary drive member 4 is reduced in cost and size accordingly, so that the manufacturing cost can be reduced. In addition, the vehicular lamp 1 according to the first embodiment can be widened to the left and right since the wide additional light distribution pattern CP3 widened to the left and right can be reliably obtained even when the semiconductor light source 2 is rotated slightly. Further, the additional light distribution patterns CP1, CP2, and CP3 can be quickly swiveled to the left and right, and can be quickly adapted to AFS (Adaptive Front Lighting System). In other words, the additional lamp light distribution patterns CP1, CP2, and CP3 expanded to the left and right can be quickly swiveled to the left and right according to the traveling state of the vehicle to change the follow-up.

  Further, in the vehicular lamp 1 according to the first embodiment, the additional lamp light distribution patterns CP1, CP2, and CP3 emitted from the cylindrical main lens 5 are directly irradiated from the light emitter 10 of the semiconductor-type light source 2. A light distribution pattern in which a light emission image of the light emitter 10 having the rectangular shape is expanded to the left and right by the main lens 5 of the cylindrical lens, and one side (lower side) of the rectangular light emitter 10 is cut. This is a light distribution pattern for the offline CL4. For this reason, the vehicular lamp 1 according to the first embodiment has no shift or distortion in the cut-off line CL4 of the additional lamp light distribution patterns CP1, CP2, and CP3 that are expanded to the left and right, and is swiveled to the left and right. There is no deviation or distortion in the cut-off line CL4 of the additional lamp light distribution patterns CP1, CP2, and CP3. As a result, the vehicular lamp 1 according to the first embodiment irradiates the left or right side of the passing light distribution pattern LP of the main light distribution pattern with the additional light distribution patterns CP1, CP2, and CP3 that are spread left and right. When the light distribution pattern for additional lamps is used, the visibility of a pedestrian on the side of the vehicle at low speed traveling, for example, a pedestrian on the road shoulder, can be improved, thereby contributing to traffic safety.

  8 and 9 show Example 2 of a vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 7 denote the same components. Hereinafter, the vehicular lamp 1 according to the second embodiment will be described.

  The vehicular lamp 1 according to the second embodiment includes an additional lamp light distribution pattern CP1 that the vehicle lamp 1 according to the first embodiment irradiates the left or right side of the passing light distribution pattern LP of the main light distribution pattern, In contrast to the case of CP2 and CP3, fog lamp light distribution patterns FP1, FP2, and FP3 that irradiate the lower light distribution pattern LP of the main light distribution pattern are used.

  That is, when the semiconductor light sources 2 of the vehicle lamps 1 on both the left and right sides of the vehicle headlamp 100 are turned on, FIGS. 8 (A), (B), (C) and FIGS. 9 (B), (C), ( As shown in D), the fog lamp light distribution patterns FP1, FP2, and FP3 are irradiated.

  Here, when the steering handle is positioned at the neutral position (neutral position), the semiconductor light source 2 is positioned at the neutral position as shown in FIGS. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, the fog lamp light distribution pattern FP1 shown in FIGS. 8A and 9B is emitted from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100. The left end of the fog lamp light distribution pattern FP1 shown in FIGS. 8A and 9B is located at about 41 ° on the left side with respect to the vertical vertical line VU-VD of the screen, and the right end is the screen It is located at about 41 ° on the right side with respect to the vertical vertical line VU-VD.

  Next, when the steering handle at the neutral position is steered to the right, the semiconductor light sources 2 of the vehicle lamps 1 on the left and right sides, as shown in FIG. 4, move rightward from the neutral position around the vertical axis V1 (solid line in FIG. 4). Rotate (swivel) in the direction of the arrow. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100, the light distribution pattern is substantially the same as the fog lamp light distribution pattern FP1 shown in FIGS. 8A and 9B. The fog lamp light distribution pattern FP2 shown in FIGS. 8B and 9C is irradiated. The left end of the fog lamp light distribution pattern FP2 shown in FIGS. 8B and 9C is located at about 31 ° on the left side with respect to the vertical vertical line VU-VD of the screen, and the right end is the screen It is located at about 51 ° on the right side with respect to the vertical vertical line VU-VD.

  Then, when the steering handle steered to the right is further steered to the right, the semiconductor-type light source 2 of the vehicle lamp 1 on both the left and right sides, as shown in FIG. 5, moves rightward from the position shown in FIG. 4 about the vertical axis V1. It rotates in the direction of the solid arrow in FIG. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 spread left and right, and a part of the light L2 is a prism element group. 6 is emitted as light L3 which is transmitted through the auxiliary lens 7 having 6 and further expanded to the left and right. As a result, the fog lamp light distribution pattern FP1 shown in FIGS. 8 (A) and 9 (B) and FIGS. 8 (B) and 9 (C) are obtained from the left and right vehicle lamps 1 of the vehicle headlamp 100. The light distribution pattern FP3 shown in FIGS. 8 (C) and 9 (D) is a light distribution pattern that is further expanded to the left and right (expanded to the right) than the fog light distribution pattern FP2 shown in FIG. Is irradiated. The left end of the fog lamp light distribution pattern FP3 shown in FIGS. 8C and 9D is located at about 21 ° on the left side with respect to the vertical vertical line VU-VD of the screen, and the right end is the screen It is located at about 70 ° on the right side with respect to the vertical vertical line VU-VD.

  When the steering handle steered to the right is steered back to the left, the semiconductor-type light sources 2 of the left and right vehicle lamps 1 move leftward from the position shown in FIG. 5 around the vertical axis V1 (in FIG. 5). 2 and FIG. 3 by rotating around the vertical axis V1 from the position shown in FIG. 4 to the left (in the direction opposite to the solid arrow direction in FIG. 4). Return to neutral position. Accordingly, from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100, the fog lamp light distribution pattern FP3 shown in FIG. 8C and FIG. 9D is changed from FIG. 8B and FIG. The fog lamp light distribution pattern FP2 shown in (C) is swiveled, and further, the fog lamp light distribution pattern FP2 shown in FIGS. 8B and 9C is shown in FIGS. 8A and 9B. The light distribution pattern FP1 for fog lamps is swiveled back to the original state.

  Here, the upper edges of the fog lamp light distribution patterns FP1, FP2, and FP3 swiveling to the left and right, that is, the cut-off line CL5, are located below the lower horizontal cut-off line CL1 of the passing light distribution pattern LP, and It is located at about 4 ° below the horizontal line HL-HR. Further, the lower edges of the fog lamp light distribution patterns FP1, FP2, and FP3 are positioned at about 14 ° below the horizontal horizontal line HL-HR of the screen.

  Since the vehicular lamp 1 according to the second embodiment is configured and operated as described above, substantially the same effect as the vehicular lamp 1 according to the first embodiment can be achieved. In particular, the vehicular lamp 1 according to the second embodiment has foglight light distribution patterns FP1 and FP2 that irradiate the light distribution pattern spread left and right to the front side of the passing light distribution pattern LP that is the main light distribution pattern. Since FP3 is adopted, the visibility on the near side of the vehicle during bad weather driving is improved, which can contribute to traffic safety.

  10 and 11 show Example 3 of a vehicle lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 9 denote the same components. Hereinafter, the vehicular lamp 1 according to the third embodiment will be described.

  The vehicular lamp 1 according to the third embodiment includes an additional lamp light distribution pattern CP1 that the vehicle lamp 1 according to the first embodiment irradiates on the left side or the right side of the passing light distribution pattern LP of the main light distribution pattern, CP2 and CP3, and when the vehicular lamp 1 according to the second embodiment has foglight light distribution patterns FP1, FP2, and FP3 that irradiate the lower light distribution pattern LP of the main light distribution pattern. On the other hand, it is a case where the light distribution patterns for spot lamps SP1, SP2, and SP3 irradiated near the cutoff lines CL1, CL2, and CL3 of the light distribution pattern LP for passing the main light distribution pattern are used.

  That is, when the semiconductor light source 2 of the vehicle lamp 1 on both the left and right sides of the vehicle headlamp 100 is turned on, FIGS. 10 (A), (B), (C) and FIGS. 11 (B), (C), ( As shown in D), the spot lamp light distribution patterns SP1, SP2 and SP3 are irradiated.

  Here, when the steering handle is positioned at the neutral position (neutral position), the semiconductor light source 2 is positioned at the neutral position as shown in FIGS. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, the spotlight distribution pattern SP1 shown in FIGS. 10A and 11B is emitted from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100. The left end of the spot lamp light distribution pattern SP1 shown in FIGS. 10 (A) and 11 (B) is located at about 10 ° on the left side with respect to the vertical vertical line VU-VD of the screen, and the right end is the screen. It is located at about 10 ° on the right side with respect to the vertical vertical line VU-VD.

  Next, when the steering handle at the neutral position is steered to the right, the semiconductor light sources 2 of the vehicle lamps 1 on the left and right sides, as shown in FIG. 4, move rightward from the neutral position around the vertical axis V1 (solid line in FIG. 4). Rotate (swivel) in the direction of the arrow. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 that is spread to the left and right. As a result, from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100, the light distribution pattern is substantially the same as the spot lamp light distribution pattern SP1 shown in FIGS. 10 (A) and 11 (B). The spot lamp light distribution pattern SP2 shown in FIGS. 10B and 11C is irradiated. The left end of the spot lamp light distribution pattern SP2 shown in FIGS. 10B and 11C is positioned on the vertical vertical line VU-VD of the screen, and the right end is the vertical vertical line VU-VD of the screen. About 20 ° to the right.

  Then, when the steering handle steered to the right is further steered to the right, the semiconductor-type light source 2 of the vehicle lamp 1 on both the left and right sides, as shown in FIG. 5, moves rightward from the position shown in FIG. 4 about the vertical axis V1. It rotates in the direction of the solid arrow in FIG. Then, the light L1 from the light emitter 10 of the semiconductor-type light source 2 passes through the main lens 5 of the cylindrical lens and is emitted as the light L2 spread left and right, and a part of the light L2 is a prism element group. 6 is emitted as light L3 which is transmitted through the auxiliary lens 7 having 6 and further expanded to the left and right. As a result, from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100, the spot lamp light distribution pattern SP1 shown in FIGS. 10 (A) and 11 (B), and FIGS. 10 (B) and 1C). The light distribution pattern for the spot lamp shown in FIGS. 10 (C) and 11 (D) is a light distribution pattern that is further expanded to the left and right (expanded to the right) than the spot lamp light distribution pattern SP2 shown in FIG. SP3 is irradiated. The left end of the spot lamp light distribution pattern SP3 shown in FIGS. 10C and 11D is located at about 10 ° on the right side with respect to the vertical vertical line VU-VD of the screen, and the right end is the screen. About 40 ° on the right side of the vertical vertical line VU-VD.

  When the steering handle steered to the right is steered back to the left, the semiconductor-type light sources 2 of the left and right vehicle lamps 1 move leftward from the position shown in FIG. 5 around the vertical axis V1 (in FIG. 5). 2 and FIG. 3 by rotating around the vertical axis V1 from the position shown in FIG. 4 to the left (in the direction opposite to the solid arrow direction in FIG. 4). Return to neutral position. Accordingly, from the vehicle lamps 1 on the left and right sides of the vehicle headlamp 100, the spot lamp light distribution pattern SP3 shown in FIGS. 10 (C) and 11 (D) to FIG. 10 (B) and FIG. The spot lamp light distribution pattern SP2 shown in FIG. 11 (C) is swiveled. Further, from the spot lamp light distribution pattern SP2 shown in FIG. 10 (B) and FIG. 11 (C), FIG. 10 (A) and FIG. The spotlight distribution pattern SP1 shown in FIG.

  Here, the upper edges of the spot lamp light distribution patterns SP1, SP2, and SP3 swiveled to the left and right, that is, the cut-off line CL6, are located in the vicinity of the cut-off lines CL1, CL2, and CL3 of the passing light distribution pattern LP, and It is located about 1 ° below the horizontal line HL-HR. Further, the lower edges of the spot lamp light distribution patterns SP1, SP2, and SP3 are positioned at about 4 ° below the horizontal horizontal line HL-HR of the screen.

  Since the vehicular lamp 1 according to the third embodiment is configured and operated as described above, the vehicular lamp 1 according to the first embodiment and the vehicular lamp 1 according to the second embodiment have substantially the same effects. Can be achieved. In particular, the vehicular lamp 1 according to the third embodiment is for a spotlight that irradiates a light distribution pattern spread to the left and right in the vicinity of the cut-off lines CL1, CL2, and CL3 of the passing light distribution pattern LP of the main light distribution pattern. When the light distribution patterns SP1, SP2, and SP3 are used, the visibility on the far side of the vehicle when traveling at high speed is improved, which can contribute to traffic safety.

  In the first, second, and third embodiments, the additional lamp light distribution patterns CP1, CP2, and CP3, the fog lamp light distribution patterns FP1, FP2, and FP3, or the spot lamp light distribution patterns SP1 and SP2. , SP3. However, in the present invention, other auxiliary light distribution patterns for the main light distribution pattern other than the additional lamp light distribution pattern, the fog lamp light distribution pattern, and the spot lamp light distribution pattern may be used.

  In the first, second, and third embodiments, the main light distribution pattern is the passing light distribution pattern LP having the cut-off lines CL1, CL2, and CL3. However, in the present invention, the main light distribution pattern may be a light distribution pattern other than the passing light distribution pattern, for example, a highway light distribution pattern, a traveling light distribution pattern, or the like.

  Further, in Examples 1, 2, and 3, the auxiliary lens 7 having the prism element group 6 is provided. However, in the present invention, the auxiliary lens need not be provided.

  Furthermore, in Examples 1, 2, and 3, the auxiliary lens 7 having the prism element group 6 is provided outside the main lens 5. However, in the present invention, auxiliary lenses may be provided on the inner side of the main lens 5 or on both the inner and outer sides.

  Furthermore, in the first, second, and third embodiments, the auxiliary lens 7 is a lens having a small vertical cylindrical shape or a small vertical cylindrical prism element group 6. However, in the present invention, it may be an auxiliary lens that does not have a small vertical semi-cylindrical or small vertical cylindrical prism element group. In this case, any lens that expands the light emitted from the main lens left and right as an auxiliary lens may be used.

  Furthermore, in the first, second, and third embodiments, the vehicle headlamp 100 equipped with the projector-type headlamp 104 using the discharge lamp 107 as a light source will be described. However, in the present invention, the headlamp may be a reflection type or direct-light type headlamp other than the projector type. Further, the light source may be a halogen lamp other than a discharge lamp, an incandescent lamp, a semiconductor light source, or the like. Furthermore, a vehicle headlamp may be configured independently without being equipped with a headlamp.

1 is a cross-sectional view (horizontal section) showing a vehicle headlamp equipped with a vehicle lamp and a headlamp according to a first embodiment of the vehicle lamp according to the present invention. Similarly, it is the II-II sectional view taken on the line in FIG. Similarly, it is the III-III sectional view taken on the line in FIG. Similarly, it is the III-III sectional view taken on the line in FIG. 2 which shows the state which the semiconductor type light source rotated to the right side. Similarly, it is the III-III sectional view taken on the line in FIG. 2 which shows the state which the semiconductor type light source rotated further to the right side. Similarly, it is explanatory drawing which shows the light distribution pattern for additional lamps. Similarly, it is explanatory drawing which shows the light distribution pattern for additional lamps, and the light distribution pattern for passing. It is explanatory drawing of the light distribution pattern for fog lamps which shows Example 2 of the vehicle lamp concerning this invention. Similarly, it is explanatory drawing which shows the light distribution pattern for fog lamps, and the light distribution pattern for passing. It is explanatory drawing of the light distribution pattern for spot lamps which shows Example 3 of the vehicle lamp concerning this invention. Similarly, it is explanatory drawing which shows the light distribution pattern for spot lamps, and the light distribution pattern for passing.

Explanation of symbols

1 Vehicle lamp 2 Semiconductor light source (LED)
3 Holding member 4 Rotation drive member 5 Main lens (cylindrical lens)
6 Prism element group 7 Auxiliary lens 8 Heat sink member 9 Substrate 10 Light emitter 11 Light transmitting member 12 Rotating side holder 13 Rotating shaft 14 Fixed side holder 15 Through hole 16 Front side opening 17 Bearing member 100 Vehicle headlamp 101 Lamp chamber 102 Lamp housing 103 Lamp lens 104 Head lamp 105 Reflecting surface 106 Reflector 107 Discharge lamp (light source)
108 Projection lens 109 Shade 110 Frame 111 Cap 112 Through-hole 113 Inner panel 114 Bracket 115 Adjust screw and screw mounting 115
116 Pivot mechanism FL Lens focus of the second lens CP1, CP2, CP3 Light distribution pattern for additional lamp FP1, FP2, FP3 Light distribution pattern for fog lamp SP1, SP2, SP3 Light distribution pattern for spot lamp CL4 Light distribution pattern for additional lamp Cut-off line CL5 Fog lamp light distribution pattern cut-off line CL6 Spot lamp light distribution pattern cut-off line θ Radiation angle of light from semiconductor light source L1 Light emitted from semiconductor light source L2 Light emitted from main lens L3 Auxiliary Light emitted from the lens F Forward B Backward U Upward D Down L Left direction R Right direction HL-HR Left and right horizontal lines VU-VD Up and down vertical lines V1 Vertical axis (vertical axis passing through the light emitter or its vicinity) Or almost vertical axis)
V2 Vertical axis (vertical axis passing through or near the focal point of the main lens or almost vertical axis)
LP Light distribution pattern for passing CL1, CL2, CL3 Cut-off line E Elbow point

Claims (3)

In a vehicle lamp that uses a semiconductor-type light source as a light source,
The semiconductor-type light source having a light emitter;
A holding member for holding the semiconductor light source so as to be rotatable about a vertical axis or substantially a vertical axis passing through the light emitter or the vicinity thereof;
A rotation driving member for rotating the semiconductor light source about the vertical axis or substantially the vertical axis;
A lens whose focal point is located at or near the light emitter of the semiconductor-type light source and emits direct light from the light-emitting body of the semiconductor-type light source as a light distribution pattern that expands left and right, and has a non-vertical cross-sectional shape A cylindrical lens having a spherical lens cross-sectional shape, and a non-spherical lens cross-section rotated about the vertical axis or substantially the vertical axis passing through the focal point or the vicinity thereof; and
A vehicular lamp characterized by comprising: The range in which the aspherical lens cross section of the cylindrical lens is rotated about the vertical axis or substantially vertical axis is the range of the semiconductor light source when the semiconductor light source is rotated about the vertical axis or substantially vertical axis. Match or nearly match the emission range of light emitted from the illuminant,
A lens having a prism element group that spreads light left and right is provided in a predetermined range of at least one of an incident surface side and an emission surface side of light from the light emitter of the semiconductor-type light source of the cylindrical lens. Being
The vehicular lamp according to claim 1. The light emitter of the semiconductor-type light source has a rectangular shape,
The light distribution pattern emitted from the cylindrical lens is a light distribution pattern having a cut-off line, and is a direct light from the light emitter of the semiconductor-type light source and a light emission image of the light emitter having a rectangular shape. It is a light distribution pattern that expands to the left and right with the cylindrical lens, and that makes one side of the rectangular light emitter a cut-off line.
The vehicular lamp according to claim 1 or 2.

Images