JP5146214B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp comprising a plurality of lamp units. In particular, the present invention relates to a vehicular lamp that includes one lens and a plurality of lamp units.

  Conventionally, a vehicular lamp composed of a plurality of lamp units is known (for example, Patent Document 1). Hereinafter, a conventional vehicle lamp will be described. A conventional vehicular lamp is composed of a projector-type lamp unit and a reflective (parabolic) lamp unit. A light distribution pattern having a cut-off line such as a diffuse light distribution pattern, for example, a fog lamp light distribution pattern, is formed by beam irradiation from the projector-type lamp unit. On the other hand, a diffused light distribution pattern is formed by beam irradiation from a reflective (parabolic) lamp unit.

  However, in the conventional vehicle lamp, a diffused light distribution pattern is obtained by a projector-type lamp unit, and a diffused light distribution pattern is also obtained by a reflective (parabolic) lamp unit. For this reason, the conventional vehicular lamp is suitable for obtaining a light distribution pattern obtained by combining a plurality of diffusion light distribution patterns, for example, a fog lamp light distribution pattern. For example, it is not suitable for obtaining a light distribution pattern for driving (for high beam) or a light distribution pattern for low beam (for low beam).

JP 2006-302711 A

  An object of the present invention is to provide a vehicular lamp that is suitable for obtaining a light distribution pattern in which a light collection light distribution pattern and a diffuse light distribution pattern are combined.

The present invention (invention according to claim 1) includes one lens and a plurality of lamp units, and the plurality of lamp units directly irradiates light from a light source, A reflective lamp unit that reflects light from a light source with a converging reflector, and one lens has an incident surface on which light from a plurality of lamp units is incident, and light from a plurality of lamp units A light collecting function for controlling the light distribution of the direct light from the direct-type lamp unit into a light collecting light distribution pattern. eliminating the parts, and the diffusion function unit for light distribution control in the diffused light distribution pattern reflected light from the reflection type lamp unit, Tona is, unwanted lens range in the reflection system of the lamp units having a convergent reflector, direct In order to expand the range of the incident surface of the lens in the lamp unit, the incident surface of one lens has a projected area on the exit surface of the condensing function unit larger than the projected area on the exit surface of the diffusion function unit and it is assigned to the a diffusion function unit condensing function unit, characterized in that.

Further, according to the present invention (the invention according to claim 2 ), the plurality of lamp units are composed of one direct-light system lamp unit and two reflection-type lamp units. The surface is composed of one condensing function part and two diffusion function parts, and one direct-type lamp unit is arranged in the center, and the light of one direct-type lamp unit The axis is substantially parallel to the central axis of the vehicle, and two reflective lamp units are arranged on the left and right sides of one direct-light lamp unit, and the light of the two reflective lamp units The axis is substantially parallel to the central axis of the vehicle, and one light collecting function unit is arranged at the center corresponding to one direct-light system lamp unit, and the center of the light distribution pattern for traveling or Condensed light distribution pattern in the center of the light distribution pattern for passing The two diffusion function units are arranged on the left and right sides of one light collection function unit individually corresponding to the two reflection-type lamp units, and are used for the light distribution pattern for traveling or for passing each other. Light distribution is controlled as a diffused light distribution pattern of the light distribution pattern.

  The vehicular lamp of the present invention (the invention according to claim 1) turns on the light source of the direct-type lamp unit and the light source of the reflection-type lamp unit by means for solving the above-described problems. Then, the light irradiated (radiated) from the light source of the direct-type lamp unit is directly incident on the lens from the condensing function unit on the incident surface of one lens, and the light distribution is controlled to the condensing light distribution pattern. The light is emitted from the exit surface of one lens as a condensed light distribution pattern. In addition, the light irradiated (radiated) from the light source of the reflective lamp unit is converged and reflected by the converging reflector, and the convergent reflected light enters the lens from the diffusion function part of the incident surface of one lens. Then, the light distribution is controlled to the diffuse light distribution pattern, and the light is emitted as the diffuse light distribution pattern from the exit surface of one lens. Thus, the vehicular lamp of the present invention (the invention according to claim 1) is a light distribution pattern in which the light collection light distribution pattern and the diffused light distribution pattern are combined, for example, a light distribution pattern for traveling (for high beam). It is suitable for obtaining a light distribution pattern for low-pass (low beam).

  In addition, since the vehicular lamp according to the present invention (the invention according to claim 1) is composed of a single lens, the number of parts can be reduced, and the manufacturing cost can be reduced accordingly. Moreover, in the vehicular lamp of the present invention (the invention according to claim 1), since the exit surface of one lens is a surface having no inflection point, the surface shape of the exit surface of one lens is arbitrarily set. In addition, design and shaping can be easily performed, and light distribution control design of the condensing function unit and the diffusion function unit on the incident surface of one lens is facilitated, and the manufacturing cost can be reduced correspondingly.

Further, the vehicle lamp of the present invention (the invention according to claim 1 ) has a function of condensing direct light from a direct-light system lamp unit on the incident surface of one lens by means for solving the above-mentioned problems. The light distribution pattern is a combination of a light distribution pattern and a diffuse light distribution pattern with excellent distance visibility. For example, a light distribution pattern for traveling (for high beam) or a light distribution pattern for passing (low beam) can be obtained. That is, in a reflective lamp unit having a converging reflector, it is necessary for the convergent reflected light converged and reflected by the converging reflector to pass through the lens (incident from the entrance surface of the lens and exit from the exit surface). Since the lens range tends to be narrower than the aperture range of the converging reflector, if the lens range is wider than the aperture range of the converging reflector, an unnecessary range exists in the lens. On the other hand, in the case of a direct-light system lamp unit, if the focal length is not changed, there is a fact that the efficiency of direct light incident on the incident surface of the lens increases as the range of the incident surface of the lens increases. Therefore, the vehicular lamp according to the present invention (the invention according to claim 1 ) eliminates an unnecessary lens range in the reflective lamp unit having the converging reflector, and accordingly, the incident surface of the lens in the direct lamp unit is reduced. In order to widen the range, the incident surface of the lens is allocated to the condensing function unit and the diffusion function unit so that the projected area on the exit surface of the condensing function unit is larger than the projected area on the exit surface of the diffusion function unit Is. As a result, in the vehicular lamp of the present invention (the invention according to claim 1 ), as described above, direct light from the direct-type lamp unit can be obtained without changing the shape (appearance and size) of the exit surface of the lens. Since the efficiency of entering the light condensing function portion on the incident surface of one lens is improved, the light amount (luminance, illuminance) of the light converging light distribution pattern is increased, and a light distribution pattern with excellent distance visibility is obtained. Can do.

Furthermore, the vehicular lamp according to the present invention (the invention according to claim 2 ) has a light distribution pattern for traveling or a light distribution pattern for passing by means of two reflecting lamp units and a diffusing function section disposed on the left and right sides. Light distribution is controlled as a diffused light distribution pattern of the light pattern, while the light distribution pattern is centered or passing light distribution by a single direct-type lamp unit and condensing function unit arranged in the center. The light distribution pattern is controlled in the center of the pattern. As a result, the vehicular lamp according to the present invention (the invention according to claim 2 ) obtains a light distribution pattern for traveling and a light distribution pattern for passing each other by combining the light collection light distribution pattern and the diffuse light distribution pattern. Is optimal.

  Hereinafter, five 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 drawings, the symbol “F” indicates the front side of the vehicle (the forward direction side of the vehicle). The symbol “B” indicates the rear side of the vehicle. The symbol “U” indicates the upward direction when the front side is viewed from the driver side. Reference sign “D” indicates a lower side when the front side is viewed from the driver side. The symbol “L” indicates the left side when the front side is viewed from the driver side. The symbol “R” indicates the right side when the front side is viewed from the driver side. The symbol “F-B” forms an axis parallel to the central axis of the vehicle (traveling axis of the vehicle). The front, rear, upper, lower, left, right, and horizontal are the front, rear, upper, lower, left, right, and horizontal when the vehicle lamp according to the present invention is mounted on the vehicle. Further, the symbol “VU-VD” indicates vertical lines on the upper and lower sides of the screen. Reference sign “HL-HR” indicates horizontal lines on the left and right of the screen.

  1 to 3 show Embodiment 1 of a vehicular lamp according to the present invention. FIG. 1A is an explanatory diagram of a transverse section (horizontal section) showing an optical path of a vehicle lamp according to a first embodiment of the present invention. FIG. 1B is a BB line arrow view in FIG. 2A is a cross-sectional view taken along line IIA-IIA in FIG. FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. FIG. 2C is a cross-sectional view taken along the line IIC-IIC in FIG. FIG. 3 is an explanatory view showing a light distribution pattern of Example 1 of the vehicular lamp according to the present invention.

  Hereinafter, the configuration of the vehicular lamp in the first embodiment will be described. The vehicular lamp in the first embodiment is, for example, a four-lamp traveling (high beam) headlamp, which is provided on each of the left and right sides of the front portion of the vehicle (automobile). An example in which the vehicular lamp in the first embodiment is mounted on the left side of the front portion of the vehicle will be described. Note that the vehicular lamp mounted on the right side of the front portion of the vehicle is opposite to the vehicular lamp in the first embodiment.

  As shown in FIGS. 1 and 2, the vehicular lamp in the first embodiment includes one lens 1 and a plurality of lamp units 2, 3, and 4 in this example. The three lamp units 2, 3, and 4 are housed in a lamp chamber (not shown) partitioned by the one lens 1 and a lamp housing (not shown). Alternatively, the one lens 1 and the three lamp units 2, 3, 4 are divided into a lamp housing (not shown) by a lamp housing and a lamp lens (not shown) (not shown). ).

  The three lamp units are composed of one direct-type lamp unit 2 and two reflection-type lamp units 3 and 4. The one direct-type lamp unit 2 is arranged in the center. On the other hand, the two reflecting lamp units 3 and 4 are arranged on the left and right sides of the one direct-lighting lamp unit 2.

  The direct-type lamp unit 2 directly irradiates the one lens 1 with the light L2 from the light source 5. The light source 5 comprises a semiconductor-type light source such as an LED, a thermally conductive insulating substrate (for example, ceramic) 6, and an LED chip (not shown) provided on one surface of the thermally conductive insulating substrate 6, The light transmitting member (lens) 7 having a substantially hemispherical shape (dome shape) covering the LED chip is included.

  The optical axis Z2-Z2 of the direct-light system lamp unit 2 is substantially parallel to the central axis of the vehicle. The optical axis Z <b> 2-Z <b> 2 of the direct lamp unit 2 passes through the LED chip of the light source 5 and is substantially perpendicular to one surface of the thermally conductive insulating substrate 6. The light source 5 is attached to the lamp housing via a holder or a bracket.

  The reflection-type lamp units 3 and 4 reflect light L3 and L4 from the light sources 8 and 9 to the one lens 1 side by the converging reflectors 10 and 11, respectively. The light sources 8 and 9 are semiconductor-type light sources such as LEDs, and include thermally conductive insulating substrates (for example, ceramics) 12 and 13 and LED chips (on one surface of the thermally conductive insulating substrates 12 and 13). (Not shown) and substantially hemispherical (dome-shaped) light transmitting members (lenses) 14 and 15 covering the LED chip. On the inner side surfaces of the converging reflectors 10, 11, free-form reflecting surfaces 16, 17 are provided.

  The optical axes Z3-Z3, Z4-Z4 of the reflecting lamp units 3, 4 are substantially parallel to the central axis of the vehicle. The optical axes Z3-Z3, Z4-Z4 of the reflective lamp units 3, 4 pass through the LED chips of the light sources 8, 9 and one surface of the thermally conductive insulating substrates 12, 13. The light sources 8 and 9 and the convergent reflectors 10 and 11 are attached to the lamp housing via holders, brackets, and the like.

  The one surface of the heat conductive insulating substrate 12 of the light source 8 of the reflective lamp unit 3 on the left side (outside of the vehicle), the LED chip, and the light transmitting member 14 face upward. Further, the convergent reflector 10 of the reflective lamp unit 3 on the left side is disposed on the upper side. As a result, one surface of the heat conductive insulating substrate 12 of the light source 8, the LED chip and the light transmission member 14, and the reflection surface 16 of the convergent reflector 10 face each other.

  The one surface of the heat conductive insulating substrate 13 and the LED chip and the light transmitting member 15 of the light source 9 of the reflective lamp unit 4 on the right side (inner side of the vehicle, center side of the vehicle) face downward. . The converging reflector 11 of the right-side reflecting lamp unit 4 is disposed on the lower side. As a result, the one surface of the heat conductive insulating substrate 13 of the light source 9, the LED chip and the light transmission member 15, and the reflection surface 17 of the convergent reflector 11 face each other.

  The one lens 1 includes an incident surface 18 on which the lights L2, L3, and L4 from the three lamp units 2, 3, and 4 are incident, and the light L2 from the three lamp units 2, 3, and 4, respectively. , L3, and L4.

  The exit surface 19 is formed of a single curved surface having no inflection points (no irregularities and the direction of curvature is not reversed). The incident surface 18 includes a single condensing function unit 20 that controls light distribution of the direct light L2 from the one direct-lighting lamp unit 2 to a condensing light distribution pattern (spot light distribution pattern) SP; It comprises two diffusion function units 21 and 22 for controlling the light distribution of the reflected light L3 and L4 from the two lamp units 3 and 4 of the reflection system to the diffusion light distribution pattern WP.

  The incident surface 18 of the one lens 1 includes a projected area 23 on the emission surface 19 of the one light collecting function unit 20 and the emission surface 19 of the individual one diffusion function unit 21, 22. Are assigned to the one light condensing function unit 20 and the two diffusion function units 21 and 22 so that the projected areas 24 and 25 in FIG.

  The one light condensing function unit 20 is arranged at the center corresponding to the one direct-light system lamp unit 2. The one light collecting function unit 20 controls the light distribution of the light collecting light distribution pattern SP at the center of the light distribution pattern HP for travel. The two diffusing function units 21 and 22 are arranged on the left and right sides of the one condensing function unit 20 corresponding to the two reflecting lamp units 3 and 4, respectively. The two diffusion function units 21 and 22 perform light distribution control as the diffusion light distribution pattern WP of the traveling light distribution pattern HP. Here, the light amount (luminous intensity, illuminance) of the condensed light distribution pattern SP is larger than the light amount (luminous intensity, illuminance) of the diffused light distribution pattern WP.

  In the reflecting lamp units 3 and 4, as shown in FIG. 1, convergent reflected lights L 3 and L 4 converged and reflected by the converging reflectors 10 and 11 pass through the lens 1 (incident surface of the lens 1). The range 26 of the lens 1 necessary for entering from 18 and exiting from the exit surface 19 tends to be narrower than the aperture range 27 of the converging reflectors 10 and 11.

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

  First, the light source 5 of one direct-lighting lamp unit 2 and the light sources 8 and 9 of two reflecting lamp units 3 and 4 are turned on. Then, the light L2 emitted (radiated) from the light source 5 of one direct-light system lamp unit 2 is directly incident on the lens 1 from one condensing function unit 20 on the incident surface 18 of one lens 1. Then, the light distribution is controlled by the light collection light distribution pattern SP, and the light is emitted as the light collection light distribution pattern SP from the emission surface 19 of one lens 1. Lights L3 and L4 emitted (radiated) from the light sources 8 and 9 of the two reflecting lamp units 3 and 4 are converged and reflected by the converging reflectors 10 and 11, and the converged reflected lights L3 and L4 are reflected. Is incident on the lens 1 from the two diffusion function portions 21 and 22 on the incident surface 18 of the single lens 1, and the light distribution is controlled by the diffused light distribution pattern WP, from the output surface 19 of the single lens 1. The light is emitted as a diffused light distribution pattern WP. As a result, the vehicular lamp according to the first embodiment obtains a light distribution pattern HP for traveling (for high beam) combining the light collection light distribution pattern SP and the diffused light distribution pattern WP as shown in FIG. Can do.

  The vehicular lamp in the first embodiment has the above-described configuration and operation, and the effects thereof will be described below.

  The vehicular lamp in the first embodiment turns on the light source 5 of one direct-lighting lamp unit 2 and the light sources 8 and 9 of two reflecting lamp units 3 and 4, respectively. Then, the light L2 emitted (radiated) from the light source 5 of one direct-light system lamp unit 2 is directly incident on the lens 1 from one condensing function unit 20 on the incident surface 18 of one lens 1. Then, the light distribution is controlled by the light collection light distribution pattern SP, and the light is emitted as the light collection light distribution pattern SP from the emission surface 19 of one lens 1. Lights L3 and L4 emitted (radiated) from the light sources 8 and 9 of the two reflecting lamp units 3 and 4 are converged and reflected by the converging reflectors 10 and 11, and the converged reflected lights L3 and L4 are reflected. Is incident on the lens 1 from the two diffusion function portions 21 and 22 on the incident surface 18 of the single lens 1, and the light distribution is controlled by the diffused light distribution pattern WP, from the output surface 19 of the single lens 1. The light is emitted as a diffused light distribution pattern WP. As described above, the vehicular lamp according to the first embodiment is suitable for obtaining a traveling (high beam) light distribution pattern HP combining the light collection light distribution pattern SP and the diffused light distribution pattern WP.

  Moreover, since the vehicular lamp according to the first embodiment includes one lens 1, the number of parts can be reduced, and the manufacturing cost can be reduced correspondingly. Moreover, in the vehicular lamp according to the first embodiment, since the exit surface 19 of one lens 1 is a surface having no inflection point, the surface shape of the exit surface 19 of one lens 1 can be arbitrarily and easily set. In addition, the light distribution control design of one condensing function part 20 and two diffusion function parts 21 and 22 on the incident surface 18 of one lens 1 is facilitated. Manufacturing costs can be reduced.

  Further, the vehicular lamp according to the first embodiment has a diffused light distribution of the traveling light distribution pattern HP by the two reflecting lamp units 3 and 4 and the diffusion function units 21 and 22 arranged on the left and right sides. The light distribution is controlled as a pattern WP. On the other hand, the light distribution pattern SP is arranged at the center of the traveling light distribution pattern HP by the single direct-type lamp unit 2 and the light condensing function unit 20 arranged in the center. Control light distribution. As a result, the vehicular lamp according to the first embodiment is optimal for obtaining a traveling light distribution pattern HP that combines the light collection light distribution pattern SP and the diffused light distribution pattern WP.

  4 and 5 show a second embodiment of a vehicular lamp according to the present invention. 4 and 5, the same reference numerals as those in FIGS. 1 to 3 denote the same components. FIG. 4A is an explanatory diagram of a transverse section (horizontal section) showing an optical path of the vehicle lamp according to the second embodiment of the present invention. FIG. 4B is a BB line arrow view in FIG. FIG. 5 is an explanatory view showing a light distribution pattern of Example 2 of the vehicular lamp according to the present invention.

  Hereinafter, the vehicular lamp in the second embodiment will be described. In the vehicular lamp according to the second embodiment, the incident surface 18 of one lens 1 has a projection area 28 on the exit surface 19 of one condensing function unit 20, which is an individual diffusion function unit 21, 22. The light condensing function unit 20 and the two diffusion function units 21 and 22 are allocated so as to be larger than the projected areas 29 and 30 on the emission surface 19.

  Since the vehicular lamp in the second embodiment is configured as described above, the same operational effects as the vehicular lamp in the first embodiment can be achieved.

  In particular, since the vehicular lamp according to the second embodiment is configured as described above, the direct light L20 (see the solid line arrow in FIG. 4) from the direct-type lamp unit 2 is incident on the surface of one lens 1. The efficiency of entering 18 condensing function units 20 is 1 when the direct light L2 from the direct lamp unit 2 in the case of the vehicular lamp in the first embodiment (refer to the two-dot chain arrow in FIG. 4). Compared with the efficiency of incidence on the light condensing function unit 20 on the incident surface 18 of each lens 1, this is improved by θ2-θ1. For this reason, as shown in FIG. 5, the vehicular lamp in the second embodiment has an excellent lightness (luminous intensity, illuminance) of the condensed light distribution pattern SP, which increases the incident efficiency HSP, and has excellent distant visibility. A travel (high beam) light distribution pattern HP combining the light collection light distribution pattern SP and the diffused light distribution pattern WP can be obtained.

That is, as shown in FIG. 1, in the reflective lamp units 3 and 4 having the converging reflectors 10 and 11, the converged reflected lights L3 and L4 converged and reflected by the converging reflectors 10 and 11 are transmitted through the lens 1. The range 26 of the lens 1 necessary to perform (incident from the entrance surface 18 of the lens 1 and exit from the exit surface 19) tends to be narrower than the aperture range 27 of the converging reflectors 10 and 11. For this, when the range of the lens 1 is wider than the range 27 of the opening of the convergent reflector 10 and 11, and that there is unnecessary range 31 to the lens 1. On the other hand, in the direct-type lamp unit 2, if the focal length is unchanged, the efficiency with which the direct light L <b> 2 and L <b> 20 are incident on the incident surface 18 of the lens 1 increases as the range of the incident surface 18 of the lens 1 increases. There is a fact to do.

  Therefore, the vehicular lamp according to the second embodiment eliminates the unnecessary lens range 31 in the reflection-type lamp units 3 and 4 having the converging reflectors 10 and 11, and accordingly, the lens 1 in the direct-light system lamp unit 2. The projection area 28 on the exit surface 19 of the light condensing function unit 20 is larger than the projection areas 29 and 30 on the exit surface 19 of the diffusion function units 21 and 22 so that the range of the entrance surface 18 is expanded. The light collecting function unit 20 and the diffusion function units 21 and 22 are allocated so as to increase. As a result, in the vehicular lamp according to the second embodiment, as described above, the direct light L2 and L20 from the direct-type lamp unit 2 is obtained without changing the shape (appearance and size) of the exit surface 19 of the lens 1. Since the efficiency of entering the condensing function unit 20 on the incident surface 18 of one lens 1 is improved, the light amount (luminous intensity, illuminance) of the condensing light distribution pattern SP is increased by the incident efficiency improvement HSP, and thus far visibility. Can be obtained. The vehicular lamp in the second embodiment is in the best mode.

  6 and 7 show a third embodiment of the vehicular lamp according to the present invention. 6 and 7, the same reference numerals as those in FIGS. 1 to 5 denote the same components. FIG. 6A is a longitudinal sectional view (vertical sectional view) showing an optical path of the reflecting lamp unit 3 on the left side (outside of the vehicle). FIG. 6B is a longitudinal sectional view (vertical sectional view) showing an optical path of the direct-type lamp unit 2. FIG. 6C is a vertical cross-sectional view (vertical cross-sectional view) showing the optical path of the reflective lamp unit 4 on the right side (the outside of the vehicle). FIG. 7 is an explanatory view showing a light distribution pattern of Example 1 of the vehicular lamp according to the present invention.

  Hereinafter, the vehicular lamp in the third embodiment will be described. The vehicular lamp in the third embodiment includes a reflective lamp unit 4 on the right side (outside of the vehicle) of the vehicular lamp in the first and second embodiments, and a reflective lamp unit 3 on the left side (outside of the vehicle). Arrange like. That is, one surface of the heat conductive insulating substrate 13 of the light source 9 of the reflective lamp unit 4 on the right side (the inside of the vehicle, the center side of the vehicle), the LED chip and the light transmission member 15 are directed upward, and the reflection on the right side is performed. The converging reflector 11 of the system lamp unit 4 is arranged on the upper side.

  Since the vehicular lamp in the third embodiment is configured as described above, as shown in FIG. 7, the amount of light (luminous intensity, illuminance) of the condensed light distribution pattern SP is increased by the incident efficiency improvement HSP, so that the far vision is visible. Optimum for obtaining a light distribution pattern LP for passing (low beam) combining the light collection light distribution pattern SP and the diffused light distribution pattern WP, which are excellent in performance, and for passing with excellent distance visibility The light distribution pattern LP can be obtained.

  FIG. 8 shows Embodiment 4 of a vehicle lamp according to the present invention. 8, the same reference numerals as those in FIGS. 1 to 7 denote the same components. FIG. 8A is an explanatory view of a transverse section (horizontal section) showing an optical path of the vehicle lamp according to Embodiment 4 of the present invention. FIG. 8B is a BB line arrow view in FIG.

  Hereinafter, the vehicular lamp in the fourth embodiment will be described. In the vehicle lamp according to the fourth embodiment, one direct-type lamp unit 2 is arranged on the right side (inner side of the vehicle, the center side of the vehicle), and two reflection type lamp units 3 and 4 are arranged on the left side (vehicle). Outside). One direct-type lamp unit 2 is arranged on the left side (the outside of the vehicle), and two reflection type lamp units 3 and 4 are arranged on the right side (the inside of the vehicle, the center side of the vehicle). There may be.

  Since the vehicular lamp in the fourth embodiment is configured as described above, the same operational effects as the vehicular lamp in the first, second, and third embodiments can be achieved.

  FIG. 9 shows Example 5 of a vehicular lamp according to the present invention. 9, the same reference numerals as those in FIGS. 1 to 8 denote the same components. FIG. 9A is an explanatory diagram of a transverse section (horizontal section) showing an optical path of the fifth embodiment of the vehicular lamp according to the present invention. FIG. 9B is a BB line arrow view in FIG.

  Hereinafter, the vehicular lamp in the fifth embodiment will be described. In the vehicular lamp according to the fifth embodiment, one direct-type lamp unit 2 is arranged on the right side (the inside of the vehicle, the center side of the vehicle), and one reflective lamp unit 3 is arranged on the left side (the outside of the vehicle). ). It is to be noted that one direct-type lamp unit 2 is arranged on the left side (outside of the vehicle), and one reflection type lamp unit 3 is arranged on the right side (inside the vehicle, on the center side of the vehicle). Also good.

  Since the vehicular lamp in the fifth embodiment is configured as described above, the same operational effects as the vehicular lamp in the first, second, third, and fourth embodiments can be achieved. In particular, the vehicular lamp in the fifth embodiment is optimal for obtaining a light distribution pattern LP for passing (low beam) combining the light collection light distribution pattern SP and the diffused light distribution pattern WP.

  Hereinafter, examples other than Examples 1, 2, 3, 4, and 5 will be described. In the first, second, third, fourth, and fifth embodiments, the lamp unit includes three lamp units, that is, one lamp unit 2 that is a direct-light system and two lamp units 3 and 4 that are reflective systems. Alternatively, it is composed of two lamp units, that is, one direct-type lamp unit 2 and one reflection-type lamp unit 3. However, in the present invention, it may be composed of two direct-lighting lamp units and one reflecting lamp unit, or four or more lamp units, that is, two or more lamp units. It may be composed of a direct-type lamp unit and two or more reflective lamp units.

  Moreover, in the said Example 1, 2, 3, 4, 5, the light sources 5, 8, and 9 consist of semiconductor type light sources, such as LED. However, in the present invention, the light source may be a light source other than a semiconductor type light source such as an LED, for example, a halogen lamp, an incandescent lamp, a discharge lamp, or the like.

  Further, in the first, second, third, fourth, and fifth embodiments, the light distribution pattern HP for traveling that combines the light collection light distribution pattern and the diffuse light distribution pattern is obtained, and the light distribution pattern LP for passing is obtained. It is. However, in the present invention, as a light distribution pattern combining the light collection light distribution pattern and the diffuse light distribution pattern, a light distribution pattern other than the traveling light distribution pattern HP or the light distribution pattern LP for passing, for example, a high speed A light distribution pattern for a road may be used.

It is explanatory drawing of the optical path of one direct-light system lamp unit and the optical path of two reflective system lamp units which show Example 1 of the vehicle lamp concerning this invention. Similarly, it is explanatory drawing which shows the optical path of one direct-light system lamp unit, and the optical path of two reflection type lamp units. Similarly, it is explanatory drawing which shows the light distribution pattern for driving | running | working obtained. It is explanatory drawing of the optical path of the lamp unit of one direct system which shows Example 2 of the vehicle lamp concerning this invention, and the optical path of two lamp units of a reflection system. Similarly, it is explanatory drawing which shows the light distribution pattern for driving | running | working obtained. It is explanatory drawing of the optical path of one direct-light system lamp unit which shows Example 3 of the vehicle lamp concerning this invention, and the optical path of two reflection type lamp units. Similarly, it is explanatory drawing which shows the light distribution pattern for passing obtained. It is explanatory drawing of the optical path of the lamp unit of one direct type which shows Example 4 of the vehicle lamp concerning this invention, and the optical path of two lamp units of a reflective system. It is explanatory drawing of the optical path of one direct-light system lamp unit and the optical path of one reflective system lamp unit which shows Example 5 of the vehicle lamp concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lens 2 Direct-type lamp unit 3, 4 Reflection type lamp unit 5 Light source 6 Thermally conductive insulating substrate 7 Light transmission member 8, 9 Light source 10, 11 Convergent reflector 12, 13 Thermal conductive insulating substrate 14, 15 Light Transmission member 16, 17 Reflecting surface 18 Incident surface 19 Outgoing surface 20 Condensing function unit 21, 22 Diffusing function unit 23 Projected area on exit surface of condensing function unit 24, 25 Projected area on exit surface of diffusing function unit 26 Convergent reflection Range required for light to pass through lens 27 Range of aperture of converging reflector 28 Projected area on exit surface of condensing function unit 29, 30 Projected area on exit surface of diffusion function unit 31 Unnecessary range F Before B After U Up D Down L Left R Right HL-HR Horizontal horizontal lines on screen VU-VD Vertical vertical lines on screen Z2-Z2 Direct-type lamp unit Optical axis Z3-Z3 Optical axis of the left reflective lamp unit Z4-Z4 Optical axis of the right reflective lamp unit HP Light distribution pattern for traveling LP Light distribution pattern for passing SP Light distribution for condensing Pattern HSP Incidence efficiency improvement Pattern with improved spectroscopic quantity WP Diffusing light distribution pattern L2, L20 Direct light from direct lamp unit L3 Convergent reflected light from left reflection lamp unit L4 Right reflection lamp unit Convergent reflected light from

Claims (2)

In a vehicular lamp composed of a plurality of lamp units,
One lens and the plurality of lamp units;
The plurality of lamp units are composed of a direct-type lamp unit that directly irradiates light from a light source, and a reflective lamp unit that reflects light from the light source with a converging reflector,
The one lens includes an incident surface on which light from the plurality of lamp units is incident and an exit surface from which light from the plurality of lamp units is emitted.
The exit surface is a surface having no inflection point,
The incident surface includes a condensing function unit that controls light distribution from the direct lamp unit to a condensing light distribution pattern, and distributes reflected light from the reflection lamp unit to the diffuse light distribution pattern. a diffusion function unit for controlling, Ri Tona,
In order to eliminate an unnecessary lens range in the reflection-type lamp unit having the converging-type reflector, and to increase the range of the entrance surface of the lens in the direct-type lamp unit, the entrance surface of the one lens is as the projected area is larger than the projected area of the exit surface of the diffusion function unit in the emitting surface of the light focusing function unit and is assigned to the condensing functional portion and the diffusion function unit,
A vehicular lamp characterized by the above. The plurality of lamp units includes one direct-type lamp unit and two reflection-type lamp units,
The entrance surface of the one lens is composed of one condensing function part and two diffusion function parts,
The one direct-type lamp unit is arranged in the center,
The optical axis of the one direct-light system lamp unit is substantially parallel to the central axis of the vehicle,
The two reflective lamp units are arranged on the left and right sides of the single direct lamp unit,
The optical axes of the two reflecting lamp units are substantially parallel to the central axis of the vehicle,
The one light condensing function unit is arranged at the center corresponding to the one direct-lighting lamp unit, and condenses at the center of the light distribution pattern for traveling or the center of the light distribution pattern for passing. Light distribution control of the light distribution pattern,
The two diffusing function units are arranged on the left and right sides of the one condensing function unit individually corresponding to the two reflecting lamp units, and are used for a light distribution pattern for traveling or for passing each other. Light distribution control as a diffuse light distribution pattern of
The vehicular lamp according to claim 1 .

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