JP2014082225A - Vehicle headlamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a vehicle headlamp utilizing the characteristics of both a laser light source and other light sources.SOLUTION: In a headlamp system, light-distributed areas a1 and a2 of LED light source units are used to form a light-distributed pattern L of the passing light, and a light-distributed spot A1 of a laser light source unit and the light-distributed areas a1 and a2 of LED light source units are used to form a light-distributed pattern H of the traveling light.

Description

  The present invention relates to a vehicular headlamp including a laser light source, and more particularly to a hybrid vehicular headlamp including a laser light source and a conventional light source such as an LED. .

  Conventionally, halogen lamps are often used as headlamps (vehicle headlamps) for automobiles, but in recent years, headlamps using HID (High Discharge) lamps are increasing.

  For example, a headlamp for an automobile has a configuration in which a light distribution pattern having a cut-off line at the upper end edge can be formed in a passing lamp, thereby preventing an oncoming vehicle driver from being dazzled. The front visibility of the driver can be ensured.

  Recently, development of headlamps using light emitting diodes (LEDs) with low power consumption as light sources has been actively conducted. For example, Patent Document 1 discloses different areas as shown in FIG. A headlamp that forms a desired light distribution pattern B by combining the light distribution patterns b1 to b3 of the light source unit that has been distributed to the light source (hereinafter referred to as a region-divided headlamp) is disclosed.

  Further, in Patent Document 2, as shown in FIG. 34, a headlamp that forms a desired light distribution pattern C by superimposing the light distribution patterns c1 to c4 of the light source unit (hereinafter referred to as superposition). Type headlamps).

JP 2007-030570 A (released on Feb. 08, 2007) JP 2008-013014 A (released on January 24, 2008)

  Here, in order to distribute light from a light source to a small spot using a reflector, it is preferable that the luminance of the light source is high and the relative size of the light source with respect to the reflector is sufficiently small.

  However, the headlamps using the LEDs disclosed in Patent Document 1 and Patent Document 2 as light sources cannot obtain sufficient luminance, and the relative size of the light source with respect to the reflector cannot be sufficiently reduced in diameter. . For this reason, it is difficult to distribute light from a light source to a smaller spot using a reflector.

  On the other hand, by using a phosphor excited by laser light as a light source (hereinafter referred to as a laser light source), luminance exceeding that of a conventional light source such as an LED can be obtained, and a small optical system is used. However, it is possible to distribute light farther without diffusing light.

  For this reason, according to the headlamp using a laser light source, it becomes possible to illuminate a far-off small spot brightly, and such light distribution characteristics are, for example, formation of a high-beam light distribution pattern (running light). It can utilize suitably for.

  However, it is not always necessary to illuminate a wide range with only a laser light source capable of obtaining a high light distribution characteristic, and it is preferable to take advantage of both the characteristics of a laser light source and the characteristics of a conventional light source such as an LED. Such a technical idea has not been disclosed so far.

  The present invention has been made in view of the above problems, and an object thereof is to provide a vehicular headlamp that utilizes the characteristics of a laser light source and other light sources.

  In order to solve the above-described problem, a vehicle headlamp according to the present invention includes a laser light source that emits laser light, a first light-emitting unit that includes a phosphor that emits light by receiving the laser light, and the first light-emitting unit. A first light distribution unit that distributes light from the light emission unit, a second light emission unit including an LED, and a second light distribution unit that distributes light from the second light emission unit, The first light distribution unit and the second light distribution unit are optical systems independent of each other, and the luminance of the first light emitting unit is set to be larger than the luminance of the second light emitting unit. And a light distribution pattern of a passing lamp is formed using the light distributed from the second light distribution unit, and the light distributed from the first light distribution unit and the second light distribution The light distribution pattern of the traveling lamp is formed using the light distributed from the section.

  According to the present invention, there is an effect that it is possible to provide a vehicular headlamp that utilizes the characteristics of a laser light source and other light sources.

FIG. 1 is a plan view illustrating a schematic configuration of the headlamp system according to the first embodiment. FIG. 2 is a perspective view showing the headlamp system shown in FIG. FIG. 3 is a cross-sectional view showing a schematic configuration of a laser light source unit included in the headlamp system shown in FIG. FIG. 4 is a cross-sectional view showing a schematic configuration of an LED light source unit included in the headlamp system shown in FIG. FIG. 5 is a schematic diagram showing a light distribution pattern in the reference plane of the headlamp system shown in FIG. 6 (a) and 6 (b) are schematic diagrams showing modifications of the light distribution pattern on the reference plane, and FIG. 6 (a) shows the light distribution pattern corresponding to the light distribution characteristic standard of the passing lamp. FIG. 6B shows a light distribution pattern corresponding to the light distribution characteristic standard of the traveling light. FIG. 7 is a cross-sectional view showing a schematic configuration of a modified example of the laser light source unit shown in FIG. FIG. 8 is a plan view illustrating a schematic configuration of the headlamp system according to the second embodiment. FIG. 9 is a perspective view showing the headlamp system shown in FIG. FIG. 10 is a block diagram illustrating an internal configuration of the headlamp system according to the second embodiment. FIG. 11 is a flowchart showing an operation flow of the headlamp system shown in FIG. FIG. 12 is a schematic diagram showing an operating state of the headlamp system shown in FIG. FIG. 13 is a cross-sectional view showing the main configuration of a modification of the laser light source unit shown in FIG. FIG. 14 is an enlarged plan view of the periphery of the light emitting unit shown in FIG. 15 (a) and 15 (b) are cross-sectional views showing the light distribution direction of the laser light source unit shown in FIG. 13, and FIG. 15 (a) shows that the central portion of the light emitting unit is irradiated with laser light. FIG. 15B shows the light distribution direction when the irradiation position of the laser beam is shifted. FIG. 16 is a cross-sectional view illustrating a main configuration of a laser light source unit including a transmissive light emitting unit. FIG. 17 is an enlarged plan view of the periphery of the light emitting portion shown in FIG. FIG. 18 is a cross-sectional view showing a main configuration of a laser light source unit including a convex lens and a reflector. FIG. 19 is a perspective view showing a main configuration of a laser light source unit including a MEMS mirror element. FIG. 20 is a perspective view showing the MEMS mirror element shown in FIG. FIG. 21 is a perspective view showing a main configuration of a laser light source unit including a biaxial piezo mirror element. FIG. 22 is a perspective view showing a main configuration of a laser light source unit including two galvanometer mirrors. FIG. 23 is a perspective view showing a main configuration of a laser light source unit including a variable lens whose angle or position can be controlled. FIG. 24 is a plan view illustrating a schematic configuration of the headlamp system according to the third embodiment. FIG. 25 is a perspective view showing the headlamp system shown in FIG. FIG. 26 is a block diagram showing an internal configuration of the headlamp system shown in FIG. FIG. 27 is a flowchart showing an operation flow of the headlamp system shown in FIG. FIG. 28 is a schematic diagram showing an operating state of the headlamp system shown in FIG. FIG. 29 is a plan view illustrating a schematic configuration of the headlamp system according to the fourth embodiment. FIG. 30 is a cross-sectional view showing a main configuration of the headlamp system shown in FIG. FIG. 31 is a cross-sectional view illustrating a schematic configuration of an integrated LED in which a light emitting unit and an LED are integrally configured. FIG. 32 is a plan view showing a modification of the light emitting unit shown in FIG. FIG. 33 is a schematic diagram showing a light distribution pattern of a conventional region-divided headlamp. FIG. 34 is a schematic diagram showing a light distribution pattern of a conventional superimposed headlamp.

Embodiment 1
The first embodiment of the lighting device according to the present invention will be described below with reference to FIGS. In this embodiment, a case where the lighting device according to the present invention is applied to a headlamp system of an automobile (vehicle) will be described as an example.

  However, the lighting device according to the present invention can also be applied to a vehicle headlamp other than an automobile or other lighting devices.

[Configuration of Headlamp System 100]
First, the configuration of the headlamp system 100 according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a plan view showing a schematic configuration of a headlamp system 100 according to the present embodiment, and FIG. 2 is a perspective view showing the headlamp system 100 shown in FIG. As shown in FIGS. 1 and 2, the headlamp system 100 includes a laser light source unit 1a, an LED light source unit 2a, and an LED light source unit 2b.

  The laser light source unit 1a and the LED light source units 2a and 2b are arranged on the metal base 3 in a line in a direction orthogonal to the light distribution direction of the headlamp system 100, and are arranged on both sides of the laser light source unit 1a. LED light source units 2a and 2b are arranged.

  The headlamp system 100 includes a light distribution spot (first light distribution area) A1 where light from the laser light source unit 1a is distributed, and a light distribution area (second light distribution) where light from the LED light source unit 2a is distributed. The desired light distribution pattern A is formed by combining the light distribution area (a1) and the light distribution area (second light distribution area) a2 to which the light from the LED light source unit 2b is distributed. .

  One headlamp system 100 is disposed at each of the front end portions of the vehicle on which the headlamp system 100 is mounted. However, for convenience of explanation, in each of the embodiments described later, a case where illumination is performed by one headlamp system 100 will be described. .

  In the following, the configurations of the laser light source unit 1a, the LED light source units 2a and 2b, and the metal base 3 will be described. However, the LED light source units 2a and 2b have substantially the same configuration. Only the LED light source unit 2b will be described.

(Laser light source unit 1a)
FIG. 3 is a cross-sectional view showing a schematic configuration of the laser light source unit 1a included in the headlamp system 100 shown in FIG. As shown in FIG. 3, the laser light source unit 1 a includes a semiconductor laser element 11, a condenser lens 12, a light emitting unit 13, and a reflector (light distribution unit) 14.

(Semiconductor laser element 11)
The semiconductor laser element 11 is a light emitting element that functions as an excitation light source that emits excitation light. The semiconductor laser element 11 may have one light emitting point on one chip, or may have a plurality of light emitting points on one chip.

  By using laser light as the excitation light, it is possible to efficiently excite phosphors included in the light emitting unit 13 described later, and to emit light having higher brightness than the conventional light source. Further, the light emitting unit 13 itself Can be reduced in diameter.

  A plurality of the semiconductor laser elements 11 may be provided. In this case, laser light as excitation light is oscillated from each of the plurality of semiconductor laser elements 11. Although only one semiconductor laser element 11 may be used as in this embodiment, it is easier to use a plurality of semiconductor laser elements 11 in order to obtain high-power laser light. When a plurality of semiconductor laser elements 11 are provided, laser light with different wavelengths may be oscillated from each semiconductor laser element 11. For example, a combination of a blue laser and a green laser, or a blue-violet laser and a blue laser may be used. Conceivable.

  The wavelength of the laser light of the semiconductor laser element 11 is, for example, 405 nm (blue violet) or 450 nm (blue), but is not limited thereto, and may be appropriately selected according to the type of phosphor included in the light emitting unit 13. Good.

  In this embodiment, the semiconductor laser element 11 is mounted on a metal package having a diameter of 9 mm, and oscillates laser light having a wavelength of 405 nm (blue-violet) at an output of 1 W.

  A wiring 4 is connected to the semiconductor laser element 11, and electric power or the like is supplied to the semiconductor laser element 11 through the wiring 4.

(Condensing lens 12)
The condenser lens 12 is a lens for adjusting the irradiation range of the laser beam so that the laser beam oscillated from the semiconductor laser element 11 is appropriately irradiated to the light emitting unit 13. The condensing lens 12 irradiates the light emitting unit 13 with laser light through a window portion 14 b provided in the reflector 14.

  In the present embodiment, the condenser lens 12 adjusts the irradiation range of the laser light oscillated from the semiconductor laser element 11 so that the irradiation range of the laser light in the light emitting unit 13 has a diameter of 0.3 mm.

  In addition, although the condensing lens 12 is comprised from one lens, you may comprise the condensing lens 12 using a some lens.

(Light Emitting Unit 13)
The light emitting part (first light emitting part) 13 emits fluorescence upon receiving the laser light oscillated from the semiconductor laser element 11, and includes a phosphor (fluorescent substance) that absorbs the laser light and emits fluorescence. Yes. For example, the light emitting unit 13 includes phosphor particles dispersed on a substrate made of a material in which phosphor particles are dispersed inside a sealing material, phosphor particles solidified, or a material having high thermal conductivity. Is deposited.

  The light emitting unit 13 is disposed on the metal base 3 and substantially at the focal point of the reflector 14. For this reason, the light emitted from the light emitting unit 13 is reflected by the reflection curved surface of the reflector 14 so that the optical path is controlled with high accuracy.

  Further, the light emitting portion 13 is an inclined portion provided on the metal base 3 such that an extended surface E of the irradiated surface, which is a surface irradiated with laser light, is in contact with the end portion of the reflector 14 in which the opening 14a is formed. 3a is inclined and arranged. For this reason, the light emitted from the light emitting unit 13 can be efficiently reflected and distributed by the reflector 14 without leaking directly to the outside.

  Further, by providing the inclined portion 3a, the light emitting point of the light emitting portion 13 cannot be directly seen from the outside, so that it is possible to prevent the occurrence of illusion due to the fact that only one point is bright when viewed from the outside. .

  In addition, it is preferable that an antireflection structure for preventing the reflection of the laser light is formed on the irradiation surface of the light emitting unit 13. Thereby, since it can suppress that the laser beam oscillated from the semiconductor laser element 11 reflects on an irradiation surface, the utilization efficiency of a laser beam can be improved.

  As the phosphor of the light emitting unit 13, for example, an oxynitride phosphor (for example, sialon phosphor) or a III-V group compound semiconductor nanoparticle phosphor (for example, indium phosphorus: InP) can be used. These phosphors have high heat resistance against high-output (and / or light density) laser light oscillated from the semiconductor laser element 11, and are optimal as laser light sources. However, the phosphor of the light emitting unit 13 is not limited to the above-described phosphor, and may be another phosphor such as a nitride phosphor.

  Further, the law stipulates that the illumination light of the automotive headlamp system 100 must be white having a predetermined range of chromaticity. For this reason, the light emitting unit 13 includes a phosphor selected so that the illumination light is white.

  For example, when blue, green, and red phosphors are included in the light emitting unit 13 and irradiated with laser light of 405 nm, white light is generated. In addition, a yellow phosphor (or green and red phosphor) is included in the light-emitting portion 13, and a so-called blue laser having a peak wavelength in a wavelength range of 450 nm (blue) to 440 nm to 490 nm (or blue). White light can also be obtained by irradiating light.

  The sealing material of the light emitting unit 13 is, for example, a resin material such as a glass material (inorganic glass or organic-inorganic hybrid glass) or a silicone resin. Low melting glass may be used as the glass material. The sealing material is preferably highly transparent, and when the irradiated laser beam has a high output, a material having high heat resistance is preferable.

In the present embodiment, the light-emitting unit 13 receives a red fluorescent material (CaAlSiN ₃ : Eu), a green fluorescent material (β -It contains three types of RGB phosphors: SiAlON: Eu) and blue phosphor ((BaSr) MgAl ₁₀ O ₁₇ : Eu). In addition, the light-emitting portion 13 is applied to the inclined portion 3a by mixing phosphor powder with a resin so as to be a square with a side of 1 mm and a thickness of 0.1 mm.

By providing such a light emitting unit 13, in this embodiment, 80 lumens of light can be obtained from the light emitting unit 13. In addition, the light emitting unit 13 can be formed as a point light source with a high luminance of 320 cd / mm ² .

  As the light emitting unit 13, a scatterer that diffuses and scatters laser light may be disposed near the focal point of the reflector 14. When a scatterer is used as the light emitting unit 13, the scatterer that has received the laser light from the semiconductor laser element 11 scatters the laser light, and the scattered laser light is distributed as illumination light by the reflector 14. In this case, in order to output white light, a plurality of semiconductor laser elements 11 having different wavelengths of light emitted from one reflector 14 may be used in combination.

(Reflector 14)
The reflector (light distribution unit) 14 reflects light emitted by the light emitting unit 13 and distributes the light toward the light distribution spot A1. For example, the reflector 14 may be a member having a metal thin film formed on the surface thereof, or may be a metal member.

  The reflector 14 has at least a partial curved surface obtained by cutting a curved surface (parabolic curved surface) formed by rotating the parabola with the axis of symmetry of the parabola as a rotational axis by a plane parallel to the rotational axis. A part is included in the reflective surface. The reflector 14 has a semicircular opening 14 a in the direction in which the light emitted by the light emitting unit 13 is distributed.

  The light emitted from the light emitting unit 13 disposed substantially at the focal point of the reflector 14 is distributed forward by the reflector 14 having a parabolic curved reflecting surface to form a nearly parallel beam bundle. . Thereby, the light from the light emitting unit 13 can be distributed toward the light distribution spot A1 by efficiently controlling the optical path within a narrow solid angle. As a result, the light distribution characteristics of the laser light source unit 1a can be improved.

  The semiconductor laser element 11 is disposed outside the reflector 14, and the reflector 14 is provided with a window portion 14 b that transmits or passes the laser light. This window part 14b may be a through-hole, or may include a transparent member that can transmit laser light. For example, a transparent plate provided with a filter that transmits laser light and reflects white light (fluorescence of the light-emitting portion 13) may be provided as the window portion 14b. According to this configuration, the light emitted from the light emitting unit 13 can be prevented from leaking from the window portion 14b.

  In this embodiment, a semicircular reflector 14 in which aluminum is coated on the inner surface of a resin half parabolic mirror is used, the depth is 8.3 mm, and the radius of the opening 14 a is 10 mm.

  The reflector 14 may include a parabolic mirror having a closed circular opening, or a part thereof. Besides the parabolic mirror, an elliptical shape, a free curved surface shape, or a multi-faceted multi-reflector can be used. Furthermore, a part that is not a parabolic curved surface may be included in a part of the reflector 14.

  In addition, the laser light source unit 1a may include a wavelength cut coat 22 (see FIG. 19) or the like that blocks light in a specific wavelength region in the opening 14a of the reflector 14.

  According to the laser light source unit 1a having such a configuration, it is possible to brightly illuminate a small small light distribution spot A1 because it has high luminance and excellent light distribution characteristics.

(LED light source unit 2a)
FIG. 4 is a cross-sectional view showing a schematic configuration of the LED light source unit 2a included in the headlamp system 100 shown in FIG. As shown in FIG. 4, the LED light source unit 2 a includes an LED (Light Emitting Diode) 23 and a reflector (light distribution unit) 24.

(LED23)
The LED (second light emitting unit) 23 has a configuration in which phosphor particles are scattered around the LED chip, and the LED chip and the phosphor are sealed with a sealing material.

  The LED 23 is on the metal base 3 and is disposed at substantially the focal point of the reflector 24. For this reason, the light emitted from the LED 23 is reflected by the reflection curved surface of the reflector 24 to control the optical path.

  In addition, wiring (illustration omitted) is connected to LED23, and electric power etc. are supplied to LED23 via the said wiring.

  In this embodiment, the LED 23 is used as the light source of the LED light source unit 2a. However, the LED 23 is not limited to the LED 23. For example, a halogen lamp or an HID lamp (High Discharge Lamp) may be used.

(Reflector 24)
The reflector (light distribution unit) 24 reflects the light emitted by the LED 23 and distributes the light toward the light distribution area a1. The reflector 24 may be, for example, a member having a metal thin film formed on the surface thereof or a metal member.

  The reflector 24 has at least a partial curved surface obtained by cutting a curved surface (parabolic curved surface) formed by rotating the parabola with the axis of symmetry of the parabola as a rotational axis, along a plane parallel to the rotational axis. A part is included in the reflective surface. The reflector 24 has a semicircular opening 24a in the direction in which the light emitted from the LED 23 is distributed.

  In this embodiment, a semicircular reflector 24 in which aluminum is coated on the inner surface of a resin half parabolic mirror is used, the depth is 40 mm, and the radius of the opening 24 a is 40 mm.

  The reflector 24 may include a parabolic mirror having a closed circular opening, or a part thereof. Besides the parabolic mirror, an elliptical shape, a free curved surface shape, or a multi-faceted multi-reflector can be used. Furthermore, a part that is not a parabolic curved surface may be included in a part of the reflector 24.

  Although not shown, the LED light source unit 2a may include a lens for controlling the light distribution in the opening 24a of the reflector 24.

(Metal base 3)
The metal base 3 is a support member that supports the laser light source unit 1a and the LED light source units 2a and 2b, and is made of metal (for example, aluminum, copper, or iron). For this reason, the metal base 3 has high thermal conductivity, and heat generated in the semiconductor laser element 11, the light emitting unit 13, and the LED 23 disposed on the metal base 3 can be efficiently radiated.

  In addition, the metal base 3 is not limited to what consists of metals, The substance (High heat conductive ceramics, glass, sapphire, etc.) with high heat conductivity other than a metal may be included. However, the surface of the inclined portion 3a to which the light emitting portion 13 is applied preferably functions as a reflecting surface. Since the surface of the inclined portion 3a is a reflection surface, the laser light incident from the irradiation surface of the light emitting portion 13 is converted into fluorescence and then reflected by the reflection surface, so that it can be directed to the reflector 14. . Further, the laser light incident from the irradiation surface of the light emitting unit 13 can be reflected by the reflection surface, and can be converted into fluorescence again toward the inside of the light emitting unit 13.

[Operation of Headlamp System 100]
Next, the operation of the headlamp system 100 will be described with reference to FIG. A light distribution characteristic standard indicating the luminous intensity, the direction of the optical axis, and / or the distribution of light distribution is defined for the headlamp for automobiles. Since the light distribution characteristic standards differ from country to country, it is necessary to form light distribution patterns corresponding to various light distribution characteristic standards.

  FIG. 5 is a schematic diagram showing a light distribution pattern A on the reference plane 20 of the headlamp system 100. The reference plane 20 is a vertical plane installed at a position separated by about 25 m in the traveling direction of the vehicle on which the headlamp system 100 is mounted.

  As shown in FIG. 5, in the headlamp system 100, the light from the light emitting unit 13 is distributed toward the center of the region formed by the light distribution areas a1 and a2 where the light from the LEDs 23 is distributed. As described above, the light distribution spot A1 of the laser light source unit 1a is set.

  Here, since the laser light source unit 1a excites the phosphor contained in the light emitting unit 13 with laser light, it is possible to obtain light from the light emitting unit 13 with higher brightness than the LEDs 23 included in the LED light source units 2a and 2b. Furthermore, the diameter of the light emitting unit 13 itself can be reduced. For this reason, since it becomes possible to distribute the light from the light emission part 13 to a far small area without diffusing by the reflector 14, according to the laser light source unit 1a, compared with LED light source unit 2a * 2b. High light distribution characteristics can be obtained.

  Therefore, as shown in FIG. 5, for example, the light from the LED 23 is distributed toward a relatively wide light distribution area a1 and a2, and the light from the light emitting unit 13 is distributed to a specific area to be illuminated more brightly. By setting the light distribution spot A1 so as to be illuminated, partial light amount control such as illuminating the central portion of the light distribution pattern A more brightly becomes possible.

  As described above, according to the headlamp system 100, the light emitting unit 13 and the LED 23 are provided, and the light from the light emitting unit 13 and the LED 23 can be individually distributed by the reflectors 14 and 24. Efficient lighting utilizing the characteristics is possible.

[Summary of Embodiment 1]
As described above, the headlamp system 100 according to the present embodiment distributes the light from the light emitting unit 13 that emits light upon receiving laser light, the LED 23 that emits light by a light emission principle different from that of the light emitting unit 13, and the light from the light emitting unit 13. It is the structure provided with reflectors 14 and 24 toward the light spot A1.

  The headlamp system 100 includes a light emitting unit 13 that emits light by receiving laser light, and an LED 23 that emits light based on a light emission principle different from that of the light emitting unit 13, and the reflectors 14 and 24 distribute light from the light emitting unit 13. Light is distributed toward the spot A1, and light from the LED 23 is distributed toward the light distribution areas a1 and a2.

  Here, since the light emitting unit 13 emits light based on the light emission principle of receiving laser light, the light emitting unit 13 can emit light having higher luminance than a conventional light source, and further reduce the size of the light emitting unit 13 itself. be able to. For this reason, the reflector 14 can distribute the light from the light emitting unit 13 to a far smaller area without diffusing.

  Furthermore, the headlamp system 100 includes an LED 23 that emits light by a light emission principle different from that of the light emitting unit 13, and the reflector 24 directs the light from the LED 23 toward the light distribution areas a 1 and a 2. Light distribution.

  Therefore, according to the headlamp system 100, the light from the light emitting unit 13 and the light from the LED 23 can be individually distributed by the reflectors 14 and 24. Therefore, if necessary, the light distribution spot A1 and Light distribution areas a1 and a2 can be set respectively.

  Therefore, according to the headlamp system 100, for example, the light from the LED 23 is distributed toward a wide area (light distribution areas a1 and a2) and directed toward a specific area (light distribution spot A1) that is desired to be brightly illuminated. Thus, it is possible to control the amount of light such as distributing light from the light emitting unit 13.

  As described above, according to the headlamp system 100, the light from the light emitting unit 13 and the LED 23 can be individually distributed by the reflectors 14 and 24. Therefore, efficient illumination using the characteristics of the light emitting unit 13 and the LED 23 is achieved. Is possible.

  Therefore, according to the present embodiment, it is possible to provide the headlamp system 100 that utilizes the characteristics of the laser light source and other light sources.

[Modification]
Next, a modified example of the headlamp system 100 according to the present embodiment will be described with reference to FIGS. 6 and 7.

(Modification 1)
In the present embodiment, as shown in FIG. 5, the light distribution spot A <b> 1 is set in the headlamp system 100 so that the light from the light emitting unit 13 is distributed at the center of the light distribution pattern A. Although the configuration has been described, the present invention is not limited to this. In the headlamp system 100, a desired light distribution pattern A can be obtained by appropriately setting the light distribution spot A1 and the light distribution areas a1 and a2.

  For example, the light distribution spot A1 may be set so that the light from the light emitting unit 13 is distributed in the peripheral area of the light distribution areas a1 and a2. Thereby, a wider area can be illuminated by the headlamp system 100.

  Further, the light distribution spot A1 and the light distribution areas a1 and a2 may be set so as to satisfy the light distribution characteristic standard of the headlamp for an automobile.

  6 (a) and 6 (b) are schematic views showing a modification of the light distribution pattern A on the reference plane 20, and FIG. 6 (a) shows the light distribution corresponding to the light distribution characteristic standard of the passing lamp. The pattern L is shown and FIG.6 (b) has shown the light distribution pattern H corresponding to the light distribution characteristic reference | standard of a traveling light.

  As shown in FIG. 6 (a) and FIG. 6 (b), in the light distribution areas a1 and a2, a light distribution pattern L corresponding to the light distribution characteristic standard of the passing lamp having a cut-off line at the upper edge is formed. You may form the light distribution pattern H corresponding to the light distribution characteristic reference | standard of a traveling light by combining the light distribution spot A1 with the light distribution area a1 * a2.

  As described above, by forming the light distribution pattern H corresponding to the light distribution characteristic standard of the traveling lamp using the light from the laser light source unit 1a, it is possible to illuminate brighter to a farther region. The headlamp system 100 that satisfies the standard can be suitably realized.

(Modification 2)
In the present embodiment, as shown in FIG. 3, the laser light source unit 1 a has been described with the configuration including the half parabolic mirror as the reflector 14, but the present invention is not limited to this. For example, the laser light source unit 1a may be configured to include a parabolic mirror having a closed circular opening.

  FIG. 7 is a cross-sectional view showing a schematic configuration of a modified example of the laser light source unit 1a shown in FIG. As shown in FIG. 7, the laser light source unit 1A includes a parabolic mirror as the reflector 14A.

  The reflector 14 </ b> A includes at least a part of a curved surface (parabolic curved surface) obtained by rotating the parabola around the parabolic symmetry axis, and reflects the fluorescence emitted by the light emitting unit 13. It has a circular opening 14a.

  In the laser light source unit 1A including a parabolic mirror as the reflector 14A, the light emitting unit 13 is fixed to one end of a support column 15 made of metal, and is disposed at a substantially focal position of the reflector 14A.

  The other end of the column 15 penetrates the reflector 14A and is connected to a heat radiating member (not shown) having high thermal conductivity. Thereby, the heat of the light emitting part 13 that generates heat by the irradiation of the laser light can be propagated to the support column 15 and the heat radiating member, and can be efficiently radiated.

  As the reflector 14A, for example, a resin parabolic mirror whose inner surface is coated with aluminum, a depth of 8.3 mm, and a diameter of the opening 14a of 30 mm can be used.

  Thus, the shape of the reflector 14 is not particularly limited, and besides the parabolic mirror, an elliptical shape, a free-form surface shape, or a multi-faceted multi-reflector can be used.

[Embodiment 2]
A second embodiment of the lighting device according to the present invention will be described below with reference to FIGS. In addition, about the member similar to the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

[Configuration of Headlamp System 101]
First, the configuration of the headlamp system 101 according to the present embodiment will be described with reference to FIGS.

  FIG. 8 is a plan view showing a schematic configuration of the headlamp system 101 according to the present embodiment, and FIG. 9 is a perspective view showing the headlamp system 101 shown in FIG. As shown in FIGS. 8 and 9, the headlamp system 101 includes a laser light source unit 1a and an LED light source unit 2a.

  The laser light source unit 1 a and the LED light source unit 2 a are arranged on the metal base 3 side by side in a direction orthogonal to the light distribution direction of the headlamp system 101.

  The headlamp system 101 moves the light distribution spot A1 to which the light from the laser light source unit 1a is distributed toward a specific area in the light distribution area a1 to which the light from the LED light source unit 2a is distributed. Thus, a desired light distribution pattern A is formed.

  FIG. 10 is a block diagram showing an internal configuration of the headlamp system 101 according to the present embodiment. As shown in FIG. 10, the headlamp system 101 further includes a camera 5 and a control unit 6 in addition to the laser light source unit 1a and the LED light source unit 2a.

  Below, although each structural member with which the headlamp system 101 is provided is demonstrated, since the laser light source unit 1a and the LED light source unit 2a are the structure substantially the same as Embodiment 1, detailed description here is abbreviate | omitted.

(Camera 5)
The camera 5 continuously captures images in front of the vehicle including the light distribution area a1, and is disposed, for example, near a room mirror in front of the room. The camera 5 can be a photographing device that captures moving images at a television frame rate.

  The camera 5 starts shooting from the time when the LED light source unit 2 a is turned on, and outputs the shot moving image to the control unit 6.

(Control unit 6)
The controller 6 controls the operation of the laser light source unit 1a based on the moving image photographed by the camera 5. The control unit 6 includes an object detection unit 61, an object identification unit 62, a position change unit 63, and an ON / OFF switching unit 64.

(Object detection unit 61)
The object detection unit (detection unit) 61 analyzes a moving image taken by the camera 5 and detects an object in the moving image. Specifically, when the moving image is acquired from the camera 5, the object detecting unit 61 detects an object included in the light distribution area a1 in the moving image.

  When the object detection unit 61 detects an object in the light distribution area a1 in the moving image, the object detection unit 61 outputs a detection signal indicating the coordinate value of the area where the object is detected to the object identification unit 62.

(Object identification unit 62)
The object identification unit (identification unit) 62 identifies the type of object in the coordinate value indicated by the detection signal output from the object detection unit 61. Specifically, when the object identification unit 62 acquires the detection signal from the object detection unit 61, the object identification unit 62 extracts feature points such as the moving speed, shape, and position of the object at the coordinate values indicated in the detection signal, and extracts the feature points. Calculate the digitized feature value.

  Then, the object identification unit 62 refers to the reference value table stored in a memory (not shown) and manages the reference value in which the feature points for each object type are digitized, and calculates the feature calculated in the reference value table. A reference value whose error from the value is within a predetermined threshold is searched.

  For example, in the reference value table, reference values corresponding to road signs, pedestrians, or assumed obstacles are registered and managed in advance. When a reference value whose error from the calculated feature value is within a predetermined threshold is specified, the object identification unit 62 determines that the object indicated by the reference value is an object detected by the object detection unit 61 .

  When the object identification unit 62 determines that the object detected by the object detection unit 61 is an object registered in advance in the reference value table, the object identification unit 62 changes the position of the identification signal indicating the coordinate value at which the object is detected. To the unit 63.

(Position changing unit 63)
The position changing unit 63 changes the position of the light distribution spot A1 so that the light from the light emitting unit 13 is distributed toward the object based on the coordinate value indicated by the identification signal output from the object identifying unit 62. To do. Specifically, the position changing unit 63 changes the position of the light distribution spot A1 by changing the angle of the reflector 14 so that the light from the light emitting unit 13 is distributed toward the object.

  When the position changing unit 63 changes the position of the light distribution spot A1 so that the light from the light emitting unit 13 is distributed toward the object, the position changing unit 63 outputs a control signal indicating that to the ON / OFF switching unit 64. .

(ON / OFF switching unit 64)
The ON / OFF switching unit (switching unit) 64 switches on and off of the light emitting unit 13 based on the control signal output from the position changing unit 63. Specifically, the ON / OFF switching unit 64 starts supplying power to the semiconductor laser element 11 when acquiring the control signal output from the position changing unit 63. Thereby, the laser light is oscillated from the semiconductor laser element 11 and the light emitting unit 13 is turned on, thereby distributing the light from the light emitting unit 13 toward the detected object.

[Operation of Headlamp System 101]
Next, the operation of the headlamp system 101 will be described with reference to FIG. 11 and FIG. FIG. 11 is a flowchart showing an operation flow of the headlamp system 101, and FIG. 12 is a schematic diagram showing an operation state of the headlamp system 101.

  As shown in FIG. 11, when the LED light source unit 2a is turned on, the camera 5 starts photographing the light distribution area a1 (S1). At this time, the camera 5 captures the front of the vehicle with an angle of view capable of capturing the entire light distribution area a <b> 1, and outputs the captured moving image to the control unit 6.

  Next, the object detection unit 61 analyzes the moving image taken by the camera 5 and detects an object in the light distribution area a1 in the moving image (S2). When the object detection unit 61 detects an object in the light distribution area a1 in the moving image, the object detection unit 61 outputs a detection signal indicating the coordinate value at which the object is detected to the object identification unit 62.

  Next, the object identification unit 62 identifies the type of the object at the coordinate value indicated in the detection signal output from the object detection unit 61 (S3). Specifically, when the object identification unit 62 acquires the detection signal from the object detection unit 61, the object identification unit 62 extracts and digitizes the feature points such as the moving speed, shape, and position of the object at the coordinate values indicated in the detection signal. The feature value is calculated.

  Then, the object identification unit 62 refers to the reference value table and searches for a reference value whose error from the calculated feature value is within a predetermined threshold. When a reference value whose error from the calculated feature value is within a predetermined threshold is specified, the object identification unit 62 determines that the object indicated by the reference value is an object detected by the object detection unit 61. .

  When the object identification unit 62 determines that the object detected by the object detection unit 61 is an object registered in the reference value table in advance, the object identification unit 62 outputs an identification signal indicating the coordinate value at which the object is detected to the position changing unit 63. Output to. In the case illustrated in FIG. 12, the object identification unit 62 determines that the type of the object is the pedestrian O, and outputs an identification signal indicating the coordinate value in the moving image in which the pedestrian O is detected to the position changing unit 63. Output to.

  Next, the position changing unit 63 sets the light distribution spot A1 so that the light from the light emitting unit 13 is distributed toward the object based on the coordinate value indicated by the identification signal output from the object identifying unit 62. The position is changed (S4). In the case illustrated in FIG. 12, the position changing unit 63 changes the angle of the reflector 14 so that the light from the light emitting unit 13 is distributed toward the pedestrian O, thereby changing the position of the light distribution spot A1. change. And when the position change part 63 changed the position of the light distribution spot A1 so that the light from the light emission part 13 may be distributed toward the pedestrian O, the control signal which shows that is ON / OFF switching part 64.

  Next, the ON / OFF switching unit 64 turns on the light emitting unit 13 based on the control signal output from the position changing unit 63 (S5). Specifically, when the ON / OFF switching unit 64 acquires the control signal output from the position changing unit 63, the ON / OFF switching unit 64 starts supplying power to the semiconductor laser element 11 to oscillate the laser beam and emit light. The part 13 is turned on.

  Thereby, the light quantity distributed toward the pedestrian O can be increased, and the pedestrian O can be illuminated more brightly.

  As described above, in the headlamp system 101, the object detected by the object detection unit 61 is identified, and when the object is a road sign, a pedestrian, an obstacle, or the like, the amount of light distributed toward the object is increased. It is possible to illuminate more brightly.

  Therefore, according to the headlamp system 101, a road sign, a pedestrian, or an obstacle is illuminated brightly so that the road sign can be read accurately or visually recognized. Therefore, a safe driving environment can be realized.

  Note that the method for identifying the type of object in the moving image photographed by the camera 5 is not limited to the above-described method, and a known method may be applied.

  In addition to the reference values corresponding to road signs, pedestrians, and obstacles, for example, reference values corresponding to bicycles, motorcycles, and the like may be managed in the reference value table. Thereby, optimal light quantity control according to the kind of the object identified by the object identification part 62 is attained.

[Summary of Embodiment 2]
As described above, the headlamp system 101 according to the present embodiment distributes the light from the light emitting unit 13 that emits light upon receiving laser light, the LED 23 that emits light by a light emission principle different from that of the light emitting unit 13, and the light from the light emitting unit 13. Reflectors 14 and 24 that distribute light toward the light spot A1 and distribute light from the LED 23 toward the light distribution area a1, and change the relative position of the light distribution spot A1 with respect to the light distribution area a1. The position changing unit 63 is further provided.

  Since the headlamp system 101 includes the position changing unit 63 that changes the relative position of the light distribution spot A1 with respect to the light distribution area a1, the direction in which the light from the light emitting unit 13 is distributed can be changed.

  Therefore, according to the headlamp system 101, for example, it is possible to perform light amount control such that light from the light emitting unit 13 is distributed toward a specific region that is desired to be brighter in the light distribution area a1.

  The headlamp system 101 according to the present embodiment further includes an object detection unit 61 that detects an object in the light distribution area a1, and the position changing unit 63 emits light toward the object detected by the object detection unit 61. In this configuration, the position of the light distribution spot A1 is changed so that the light from the section 13 is distributed.

  Since the headlamp system 101 further includes an object detection unit 61 that detects an object in the light distribution area a1, the position changing unit 63 emits light from the light emitting unit 13 toward the object detected by the object detection unit 61. It is possible to change the position of the light distribution spot A1 so that the light is distributed.

  Therefore, according to the headlamp system 101, it is possible to perform light amount control such as increasing the amount of light distributed toward the detected object and illuminating the object brighter.

  The headlamp system 101 according to the present embodiment further includes an object identification unit 62 that identifies the type of the object detected by the object detection unit 61 by image recognition, and the position change unit 63 is When the identified object type matches the previously registered object type, the position of the light distribution spot A1 is changed so that light from the light emitting unit 13 is distributed toward the object. is there.

  Since the headlamp system 101 further includes an object identification unit 62 that identifies the type of the object detected by the object detection unit 61 by image recognition, the light amount according to the type of the object identified by the object identification unit 62 Control becomes possible.

  For example, the position changing unit 63 distributes the light from the light emitting unit 13 toward the object when the type of the object identified by the object identifying unit 62 matches the type of the object registered in advance. In this way, the position of the light distribution spot A1 is changed. Thereby, it is possible to increase the amount of light distributed only to objects registered in advance among the objects detected by the object detection unit 61 and to illuminate brighter.

  Therefore, according to the headlamp system 101, optimal light amount control according to the type of object can be performed.

  In addition, the headlamp system 101 according to the present embodiment further includes an ON / OFF switching unit 64 that switches on and off of the light emitting unit 13, and the ON / OFF switching unit 64 is distributed by the position changing unit 63 to the light distribution area a <b> 1. When the relative position of the light distribution spot A1 is changed, the light emitting unit 13 is turned on.

  Since the headlamp system 101 further includes an ON / OFF switching unit 64 that switches on and off of the light emitting unit 13, the ON / OFF switching unit 64 uses the position changing unit 63 to distribute the light distribution spot to the light distribution area a1. When the relative position of A1 is changed, the light emitting unit 13 can be turned on.

  Therefore, according to the headlamp system 101, the light emitting unit 13 can be turned on as necessary, so that the power consumption of the headlamp system 101 can be reduced.

  In the headlamp system 101 according to the present embodiment, a road sign, a pedestrian, or an obstacle is registered in advance as the type of object.

  In the headlamp system 101, road signs, pedestrians or obstacles are registered in advance as the types of objects. Therefore, when the object detected by the object detection unit 61 is a road sign, pedestrian or obstacle. The position changing unit 63 can change the position of the light distribution spot A1 so that the light from the light emitting unit 13 is distributed toward the road sign, the pedestrian, or the obstacle. Therefore, among the objects detected by the object detection unit 61, only a road sign, a pedestrian, or an obstacle can be lightened by increasing the amount of light to be distributed.

  Therefore, according to this embodiment, a road sign, a pedestrian, an obstacle, etc. are illuminated brightly so that the road sign can be accurately read by visual observation, or a pedestrian, an obstacle, etc. can be accurately recognized. Therefore, a safe driving environment can be realized.

[Modification]
Next, modified examples of the laser light source unit 1A included in the headlamp system 101 according to the present embodiment will be described with reference to FIGS.

  In the present embodiment, the laser light source unit 1a has been described with respect to the configuration in which the position of the light distribution spot A1 is changed by changing the angle of the reflector 14, but the present invention is not limited to this. For example, the position of the light distribution spot A1 may be changed by shifting the irradiation position of the laser beam on the light emitting unit 13.

(Modification 1)
FIG. 13 is a cross-sectional view showing the main configuration of a modified example of the laser light source unit 1a according to the present embodiment, and FIG. 14 is an enlarged plan view around the light emitting unit 13a shown in FIG. As shown in FIG. 13, the laser light source unit 1 </ b> B includes a mirror (position changing unit) 16, a light emitting unit 13 a, a heat sink 17, and a convex lens 18.

  The mirror 16 reflects the laser light toward the light emitting unit 13a, and is a variable mirror that can control the angle. For this reason, the mirror 16 can shift the optical path of the laser beam reflected toward the light emitting unit 13a within the range of the arrow P in the drawing.

  The heat sink 17 supports the light emitting unit 13a, and has a function of radiating heat generated in the light emitting unit 13a by irradiation of laser light through a contact surface in contact with the light emitting unit 13a. For this reason, although it is preferable to use metal materials, such as aluminum and copper with high heat conductivity, the heat sink 17 will not be specifically limited if it is material with high heat conductivity.

  The surface of the heat sink 17 that is in contact with the light emitting portion 13a is subjected to reflection processing and functions as a reflection surface. Thereby, the laser beam incident from the irradiation surface of the light emitting unit 13a can be reflected again by the reflecting surface and can be directed again to the inside of the light emitting unit 13a.

  The convex lens 18 is an optical system that distributes the light from the light emitting unit 13a within a predetermined angle range, and distributes the light from the light emitting unit 13a toward the light distribution spot A1.

  Thus, the laser light source unit 1 </ b> B has a configuration in which the convex lens 18 is provided at a position facing the light emitting unit 13 a disposed on the heat sink 17 without providing the reflector 14.

  Here, as shown in FIG. 14, in the laser light source unit 1 </ b> B, the light emitting unit 13 a is formed to have a longitudinal direction, and by controlling the angle of the mirror 16, the laser light irradiation position is emitted. It can be shifted along the longitudinal direction of the portion 13a.

  Thereby, since the relative position of the light emitting point of the light emitting unit 13a and the convex lens 18 changes, the direction in which the light from the light emitting unit 13a is distributed can be changed by shifting the irradiation position of the laser light on the light emitting unit 13a. Can be controlled.

  15 (a) and 15 (b) are cross-sectional views showing the light distribution direction of the laser light source unit 1B. FIG. 15 (a) shows the case where the central portion of the light emitting portion 13a is irradiated with laser light. The light distribution direction is shown, and FIG. 15B shows the light distribution direction when the irradiation position of the laser light is shifted.

  As shown in FIG. 15A, in the laser light source unit 1B, when laser light is irradiated on the central portion of the light emitting portion 13a, the light from the light emitting portion 13a is straightly distributed from the convex lens 18 toward the front. The light emitting part 13a and the convex lens 18 are positioned so as to be (emitted).

  When the irradiation position of the laser beam is shifted from this state, as shown in FIG. 15B, the relative position between the light emitting point of the light emitting portion 13a and the convex lens 18 changes. The light from the light emitting portion 13a can be distributed (emitted).

  Thus, according to the laser light source unit 1B, the position of the light distribution spot A1 can be changed by changing the irradiation position of the laser light on the light emitting unit 13a without providing the reflector 14. Further, since the position of the light distribution spot A1 can be easily changed without changing the whole laser light source unit 1B by a motor or the like by changing the irradiation position of the laser light to the light emitting portion 13a, the laser light source unit The apparatus configuration of 1B can be simplified.

  Note that the position of the light distribution spot A1 can be changed by changing the irradiation position of the laser beam on the light emitting portion 13a, not only in the case of the convex lens 18 but also in the case of the reflector 14A or when the lens and the reflector are used in combination. Can also be changed.

(Modification 2)
The laser light source unit 1B includes a light emitting unit (reflection type light emitting unit) 13a that emits light from an irradiation surface of the light emitting unit 13a to which the laser light is irradiated. The configuration may include a light emitting unit (transmission type light emitting unit) 13a that transmits laser light incident from the irradiation surface of the light emitting unit 13a to be irradiated and emits light from an emission surface opposite to the irradiation surface.

  FIG. 16 is a cross-sectional view showing the main configuration of a laser light source unit 1C having a transmissive light emitting unit 13a, and FIG. 17 is an enlarged plan view of the periphery of the light emitting unit 13a shown in FIG. .

  As shown in FIG. 16, in the laser light source unit 1 </ b> C including the transmissive light emitting unit 13 a, the light emitting unit 13 a is disposed on a transparent plate 19 such as glass, and the light emitting unit is interposed via the transparent plate 19. Laser light is irradiated onto the irradiation surface 13a. Thereby, the laser beam incident from the irradiation surface of the light emitting unit 13a can be transmitted, and the light can be emitted from the emission surface facing the irradiation surface toward the convex lens 18.

  Even in the laser light source unit 1C having such a transmissive light emitting unit 13a, as shown in FIG. 17, the light from the light emitting unit 13a is shifted by shifting the irradiation position of the laser light on the light emitting unit 13a. The direction of light distribution can be controlled.

(Modification 3)
Further, an elliptical mirror may be used together with the convex lens 18 in order to distribute light from the light emitting unit 13a with high accuracy.

  FIG. 18 is a cross-sectional view showing the main configuration of a laser light source unit 1 </ b> D provided with a convex lens 18 and an elliptical mirror 21. As shown in FIG. 18, the laser light source unit 1 </ b> D includes a convex lens 18 and an elliptical mirror 21, and the light emitting unit 13 a is positioned so that the central part of the light emitting unit 13 a is located at the first focal point f <b> 1 of the elliptical mirror 21. Has been placed.

  In the laser light source unit 1D, the light emitted from the light emitting unit 13a disposed at the first focal point f1 is reflected by the elliptical mirror 21 toward the second focal point f2, and passes through the second focal point f2. The light is transmitted through the convex lens 18 and distributed in a predetermined angle range.

  Thus, by using the convex lens 18 and the elliptical mirror 21 in combination, the light from the light emitting portion 13a can be distributed toward the light distribution spot A1 with high accuracy.

(Modification 4)
Further, as the variable mirror 16 capable of controlling the angle, a MEMS (Micro Electro Mechanical System) mirror (position changing unit) 30 capable of changing the angle in two axes may be provided.

  FIG. 19 is a perspective view showing a main configuration of a laser light source unit 1E including the MEMS mirror 30. As shown in FIG. The laser light source unit 1E shown in FIG. 19 shifts the irradiation position of the laser light on the light emitting unit 13a by reflecting the laser light with the MEMS mirror 30.

  FIG. 20 is a perspective view showing the MEMS mirror 30 shown in FIG. As shown in FIG. 20, the MEMS mirror 30 includes a mirror part 30a, a movable ring part 30b, and a holding part 30c. The mirror part 30a is angled by an X axis-Y axis double gimbal mechanism. It is variable. The MEMS mirror 30 is disposed, for example, on the back side of the reflector 14A, and irradiates the light emitting unit 13a with a laser beam through a window provided in the reflector 14A.

  The mirror part 30a is fitted in the movable ring part 30b held by the holding part 30c, and is, for example, a circular one having a diameter of 1 mm. The mirror surface of the mirror part 30a may be coated with Al coating or the like.

  The holding part 30c is, for example, an approximately square of 5 mm square, and holds the movable ring part 30b in which the mirror part 30a is fitted therein. The mirror unit 30a can change light in any direction by changing the angle in the D1 direction (X-axis (vertical) direction defined as the gravity direction) and / or the D2 direction (Y-axis (horizontal) direction perpendicular to the gravity direction). The direction can be controlled and reflected. Therefore, by controlling the angle of the mirror part 30a, the irradiation position of the laser light applied to the light emitting part 13a can be shifted two-dimensionally.

  As described above, according to the laser light source unit 1E, the position of the light distribution spot A1 is changed to a desired position by shifting the irradiation position of the laser light irradiated to the light emitting unit 13a by the MEMS mirror 30 with high accuracy. be able to.

  Note that the MEMS mirror 30 is preferably set such that the driving range thereof is wider in the horizontal direction than in the vertical direction in correspondence with the light distribution area a1 of the LED light source unit 2a being horizontally long. Thereby, the position of the light distribution spot A1 can be changed in the entire wide light distribution area a1.

  Further, like the laser light source unit 1E, a wavelength cut coat 22 that blocks light in a specific wavelength region may be attached to the opening 14a side of the reflector 14A. By this wavelength cut coat 22, for example, the laser light having a wavelength of 400 nm or less included in the light emitted from the light emitting unit 13 a is blocked, so that light that is highly safe for human eyes is distributed to the outside. Can do.

  The wavelength to be cut off can be appropriately adjusted according to the material of the wavelength cut coat 22 or the like. Further, a wavelength cut filter may be used instead of the wavelength cut coat 22.

(Modification 5)
Further, as the variable mirror 16 capable of controlling the angle, a biaxial piezo mirror element (position changing unit) 31 using a piezo element may be provided.

  FIG. 21 is a perspective view showing a main configuration of a laser light source unit 1 </ b> F including the biaxial piezo mirror element 31. The laser light source unit 1 </ b> F shown in FIG. 21 shifts the irradiation position of the laser light on the light emitting unit 13 a by reflecting the laser light with the biaxial piezo mirror element 31.

  The biaxial piezo mirror element 31 has a mechanism capable of changing the angle of the micromirror held by the X-axis / Y-axis double gimbal mechanism by an actuator using the piezo element. The direction of the optical path can be changed by reflecting the laser beam.

  According to the biaxial piezo mirror element 31, it is possible to adjust the angle with high accuracy, which is suitable when there are a plurality of reflections (reflections) of the laser light. The biaxial piezo mirror element 31 has, for example, a cylindrical shape with a diameter of 20 mm and a height of 40 mm.

  As described above, according to the laser light source unit 1F, the irradiation position of the laser light applied to the light emitting unit 13a can be shifted with high accuracy by controlling the biaxial piezo mirror element 31, and therefore the light distribution spot A1. The position can be changed to a desired position.

(Modification 6)
Further, as the variable mirror 16 capable of controlling the angle, two galvanometer mirrors (position changing units) 38a and 38b may be provided.

  FIG. 22 is a perspective view showing a main configuration of a laser light source unit 1G including two galvanometer mirrors 38a and 38b. The laser light source unit 1G shown in FIG. 22 shifts the irradiation position of the laser beam on the light emitting unit 13a by reflecting the laser beam with two galvanometer mirrors 38a and 38b.

  The laser light source unit 1G includes an X-axis galvano mirror 38a, a galvano mirror driving unit 39a for driving the galvano mirror 38a, a Y-axis galvano mirror 38b, and a galvano mirror driving unit 39b for driving the galvano mirror 38b. I have.

  The galvanometer mirror 38a is rotated by the drive of the galvanometer mirror driving unit 39a by an amount corresponding to the level of the input driving voltage so that the irradiation position of the laser beam on the light emitting unit 13a changes along the X-axis direction. Change the reflection angle. The galvanometer mirror 38a irradiates the reflected laser beam toward the galvanometer mirror 38b.

  The galvano mirror 38b is rotated by driving the galvano mirror driving unit 39b by an amount corresponding to the level of the input driving voltage so that the irradiation position of the laser beam on the light emitting unit 13a changes along the Y-axis direction. Change the reflection angle. The galvanometer mirror 38b irradiates the reflected laser beam toward the light emitting unit 13a.

  Thus, by controlling the angles of the galvanometer mirror 38a and the galvanometer mirror 38b, the irradiation position of the laser beam irradiated on the light emitting portion 13a can be shifted in the X-axis direction and the Y-axis direction.

  As described above, according to the laser light source unit 1G, by controlling the angles of the galvanometer mirror 38a and the galvanometer mirror 38b, the irradiation position of the laser beam irradiated on the light emitting unit 13a can be accurately determined in the X-axis direction and the Y-axis direction. Since it can be shifted, the position of the light distribution spot A1 can be changed to a desired position.

  The galvanometer mirrors 38a and 38b are provided with an HR coat made of a dielectric multilayer film, and the HR coat is preferably tuned with respect to the wavelength of the laser beam. Optical loss can be reduced by applying such HR coating to the galvanometer mirrors 38a and 38b.

(Modification 7)
Further, instead of the variable mirror 16 capable of controlling the angle, a lens (position changing unit) 32a whose angle or position can be controlled by the actuator 32b may be provided.

  FIG. 23 is a perspective view showing a main configuration of a laser light source unit 1H including a variable lens 32a whose angle or position can be controlled. The laser light source unit 1H shown in FIG. 23 shifts the irradiation position of the laser light on the light emitting unit 13a by transmitting the laser light through a variable lens 32a whose angle or position can be controlled.

  The lens 32a is an optical system that controls the optical path of the transmitted laser light, and is, for example, a convex lens. The operation of the lens 32a is controlled by the actuator 32b, and the irradiation position of the laser beam in the light emitting unit 13a is changed by changing the relative angle and position of the lens 32a with respect to the laser beam.

  The actuator 32b changes the angle / position of the lens 32a. For example, the actuator 32b generates a magnetic field by passing a current through the coil, and changes the angle / position of the lens 32a using the rotational force (rotational torque) of the magnet generated by the magnetic field. In addition, the actuator 32b can change the direction of the rotational force which acts on a magnet to an opposite direction by changing the direction of the electric current sent through a coil.

  By changing the relative angle and position of the lens 32a with respect to the laser light by the actuator 32b, the optical path of the laser light transmitted through the lens 32a can be controlled, so that the laser light irradiated to the light emitting unit 13a can be controlled. The irradiation position can be shifted.

  As described above, according to the laser light source unit 1H, the irradiation position of the laser light applied to the light emitting unit 13a can be shifted by controlling the angle / position of the lens 32a by the actuator 32b. The position of A1 can be changed to a desired position.

[Embodiment 3]
A third embodiment of the lighting device according to the present invention will be described below with reference to FIGS. In addition, about the member similar to the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

[Configuration of Headlamp System 102]
First, the configuration of the headlamp system 102 according to the present embodiment will be described with reference to FIGS.

  FIG. 24 is a plan view showing a schematic configuration of the headlamp system 102 according to the present embodiment, and FIG. 25 is a perspective view showing the headlamp system 102 shown in FIG. As shown in FIGS. 24 and 25, the headlamp system 102 includes a laser light source unit 1a, a laser light source unit 1b, and an LED light source unit 2a.

  The laser light source units 1a and 1b and the LED light source unit 2a are arranged on the metal base 3 side by side in a direction orthogonal to the light distribution direction of the headlamp system 102. Units 1a and 1b are arranged one by one.

  The headlamp system 102 distributes the light from the laser light source units 1a and 1b to the left and right peripheral areas of the light distribution area a1 where the light from the LED light source unit 2a is distributed. A2 is set, and the desired light distribution pattern A is formed by turning on the laser light source units 1a and 1b according to the handle operation of the driver.

  FIG. 26 is a block diagram showing an internal configuration of the headlamp system 101 according to the present embodiment. As shown in FIG. 26, the headlamp system 102 includes a control unit 6a in addition to the laser light source units 1a and 1b and the LED light source unit 2a.

  Hereinafter, each component provided in the headlamp system 102 will be described. However, the laser light source units 1a and 1b and the LED light source unit 2a have substantially the same configurations as those in the first embodiment, and thus detailed description thereof is omitted here. .

(Control unit 6a)
The controller 6a controls the operations of the laser light source units 1a and 1b in accordance with the driver's handle operation. The control unit 6 a includes an operation amount detection unit 65 and an ON / OFF switching unit 64.

(Operation amount detection unit 65)
The operation amount detection unit 65 detects a handle operation amount of the driver. Specifically, the operation amount detection unit 65 detects a driver's handle operation and determines whether or not the detected handle operation amount is equal to or greater than a predetermined threshold. When the handle operation amount is equal to or greater than a predetermined threshold, the operation amount detection unit 65 outputs a control signal indicating the direction in which the handle is turned to the ON / OFF switching unit 64.

(ON / OFF switching unit 64)
The ON / OFF switching unit (switching unit) 64 switches on / off of the light emitting unit 13 based on the control signal output from the operation amount detection unit 65. Specifically, when the ON / OFF switching unit 64 acquires the control signal output from the operation amount detection unit 65, the laser light source unit 1a disposed on the direction side where the handle indicated by the control signal is cut or Supply of electric power to the semiconductor laser element 11 of the laser light source unit 1b is started. Thereby, the laser beam is oscillated from the semiconductor laser element 11 and the light emitting unit 13 is turned on, thereby distributing the light from the light emitting unit 13 in the traveling direction of the vehicle.

[Operation of Headlamp System 102]
Next, the operation of the headlamp system 102 will be described with reference to FIGS. 27 and 28. FIG.

  FIG. 27 is a flowchart showing an operation flow of the headlamp system 102, and FIG. 28 is a schematic diagram showing an operation state of the headlamp system 102.

  As shown in FIG. 27, when the LED light source unit 2a is turned on, the operation amount detection unit 65 starts detection of a handle operation (S11).

  Next, when detecting the driver's handle operation, the operation amount detection unit 65 determines whether or not the handle operation amount is equal to or greater than a predetermined threshold (S12). When the handle operation amount is equal to or greater than the predetermined threshold (YES in S12), the operation amount detection unit 65 outputs a control signal indicating the direction in which the handle is turned to the ON / OFF switching unit 64. On the other hand, when the handle operation amount is less than the predetermined threshold (NO in S12), the operation amount detection unit 65 continues to detect the handle operation.

  Next, when the control signal is output from the operation amount detection unit 65, the ON / OFF switching unit 64 is a semiconductor of the laser light source units 1a and 1b arranged on the direction side in which the handle is cut as indicated by the control signal. Power supply to the laser element 11 is started and the light emitting unit 13 is turned on (S13). In the case shown in FIG. 28, the ON / OFF switching unit 64 turns on the light emitting unit 13 of the laser light source unit 1b by starting to supply power to the semiconductor laser element 11 of the laser light source unit 1b arranged on the right side of the vehicle. Let

  Thereby, since the light from the light emission part 13 is light-distributed toward the advancing direction of a vehicle, the advancing direction of a vehicle can be illuminated brightly.

[Summary of Embodiment 3]
As described above, the headlamp system 102 according to the present embodiment includes the operation amount detection unit 65 that detects the driver's handle operation amount, and the light emitting unit 13 according to the handle operation amount detected by the operation amount detection unit 65. And an ON / OFF switching unit 64 for switching on and off of the light distribution spots A1 and A2 so that light from the light emitting unit 13 is distributed to the left or right peripheral region of the light distribution area a1. Is set. And the ON / OFF switching part 64 is the structure which lights the light emission part 13 so that the light from the light emission part 13 may be light-distributed toward the direction where the vehicle specified by the operation amount detection part 65 bends.

  In the headlamp system 102, the light distribution spots A1 and A2 are set so that the light from the light emitting unit 13 is distributed to the left or right peripheral region of the light distribution area a1, and the ON / OFF switching unit 64 is arranged on the traveling direction side of the vehicle so that the light from the light emitting unit 13 is distributed in the direction in which the vehicle bends according to the operation amount of the handle detected by the operation amount detection unit 65. The light emitting unit 13 is turned on.

  Therefore, according to the present embodiment, since the traveling direction of the vehicle can be brightly illuminated, the headlamp system 102 that can realize a safe driving environment and can reduce power consumption is provided. Can be provided.

[Embodiment 4]
It will be as follows if 4th Embodiment of the illuminating device which concerns on this invention is described based on FIGS. In addition, about the member similar to the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

[Configuration of Headlamp System 103]
First, the configuration of the headlamp system 103 according to the present embodiment will be described with reference to FIGS. 29 and 30. FIG. The headlamp system 103 according to the present embodiment is different from the above embodiment in that light from the light emitting unit 13 and the LED 23 is distributed by one reflector toward the light distribution spot A1 or the light distribution area a1, respectively. Is different.

  FIG. 29 is a plan view showing a schematic configuration of the headlamp system 103 according to the present embodiment, and FIG. 30 is a cross-sectional view showing a main configuration of the headlamp system 103 shown in FIG.

  As shown in FIGS. 29 and 30, the headlamp system 103 has a configuration in which the light emitting unit 13, the LED 23, and the reflector 14 are disposed on the metal base 3.

  The light emitting unit 13 is disposed at the focal point of the reflector 14, and the LED 23 is disposed adjacent to the light emitting unit 13. In the present embodiment, the LED 23 is arranged with a 2 mm deviation from the focal point of the reflector 14 in the direction of the opening 14a.

  Thus, by arranging the light emitting unit 13 at the focal point of the reflector 14, light from the light emitting unit 13 can be distributed toward the light distribution spot A1.

  Further, by arranging the LED 23 at a position excluding the focal point of the reflector 14, the light from the LED 23 can be distributed toward a light distribution area a1 different from the light distribution spot A1. In the present embodiment, the LEDs 23 are formed to have a longitudinal direction, and are arranged with the longitudinal direction facing in a direction orthogonal to the light distribution direction. Thereby, the light from LED23 can be spread and distributed in a wide area | region.

  According to the headlamp system 103 having such a configuration, for example, in the light distribution area a1, a light distribution pattern corresponding to the light distribution characteristic standard of a passing lamp having a cut-off line at the upper end edge is formed, and the light distribution area a1 is formed. By combining the light distribution spot A1, it is possible to form a light distribution pattern corresponding to the light distribution characteristic standard of the traveling lamp.

[Summary of Embodiment 4]
As described above, the headlamp system 103 according to the present embodiment has a configuration in which the light emitting unit 13 is disposed at the focal point of the reflector 14 and the LED 23 is disposed at a position excluding the focal point of the reflector 14.

  In this headlamp system 103, the light emitting unit 13 is disposed at the focal point of the reflector 14, and the LED 23 is disposed at a position excluding the focal point of the reflector 14, so that the light from the light emitting unit 13 is distributed by one reflector 14. In addition to light distribution toward A1, it is possible to distribute light from the LED 23 toward the light distribution area a1.

  Therefore, according to the present embodiment, the light from the light emitting unit 13 and the light from the LED 23 can be individually distributed by the single reflector 14, so that a miniaturized headlamp system 103 is provided. Can do.

[Modification]
(Modification 1)
In the present embodiment, the configuration in which the light emitting unit 13 and the LED 23 are individually arranged at adjacent positions has been described, but the present invention is not limited to this. For example, the light emitting unit 13 and the LED 23 may be integrally formed.

  FIG. 31 is a cross-sectional view showing a schematic configuration of an integrated LED 33 in which the light emitting unit 13 and the LED 23 are integrally configured. As shown in FIG. 31, the integrated LED 33 has a configuration in which a phosphor is applied to the surface of the LED 23 as the light emitting unit 13.

  The integrated LED 33 is disposed, for example, at a position including the focal point of the reflector 14 so that the chip (not shown) of the LED 23 deviates from the focal point. For this reason, since the light emission part 13 can be made to light-emit by irradiating a laser beam with respect to a part of irradiation surface 33a of the integrated LED33 to which a laser beam is irradiated, the light from the light emission part 13 And the light from the LED 23 can be individually distributed by one reflector 14.

  As described above, by integrally configuring the light emitting unit 13 and the LED 23, it is possible to reduce the number of parts of the headlamp system 103, so that the configuration of the headlamp system 103 can be simplified.

(Modification 2)
Also in the headlamp system 103 according to the present embodiment, the light emitting unit 13 is formed so as to have a longitudinal direction, and the irradiation position of the laser light is shifted along the longitudinal direction of the light emitting unit 13, thereby It is possible to control the direction in which the light from 13 is distributed.

  FIG. 32 is a plan view showing a modification of the light emitting unit 13 shown in FIG. As shown in FIG. 32, the light emitting portion 13a is formed to have a longitudinal direction, and the laser light irradiation position is changed by changing the optical path of the laser light within the range of the arrow P in the drawing. It can be shifted along the longitudinal direction of 13a.

  Thereby, since the relative position of the light emitting point of the light emitting unit 13a and the reflector 14 changes, the direction in which the light from the light emitting unit 13a is distributed is shifted by shifting the irradiation position of the laser light to the light emitting unit 13a. Can be controlled.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims, and the embodiments can be obtained by appropriately combining technical means disclosed in different embodiments. The form is also included in the technical scope of the present invention.
[Summary]
A vehicle headlamp according to the present invention distributes light from a laser light source that emits laser light, a first light emitting unit that includes the phosphor that emits light upon receiving the laser light, and light from the first light emitting unit. A first light distribution unit; a second light distribution unit including an LED; and a second light distribution unit that distributes light from the second light emission unit, the first light distribution unit and the first light distribution unit The second light distribution unit is an optical system independent of each other, the luminance of the first light emitting unit is set to be larger than the luminance of the second light emitting unit, and the second light distribution unit The light distribution pattern of the passing lamp is formed using the light distributed from the light, and the light distributed from the first light distribution unit and the light distributed from the second light distribution unit are used. Thus, a light distribution pattern of the traveling lamp is formed.

In the vehicle headlamp according to the present invention, the luminance of the first light emitting unit may be 320 cd / mm ² or more.

In the vehicle headlamp according to the present invention, the area of the light emitting region of the first light distribution unit when viewed from the light distribution direction of the first light distribution unit is the second light distribution unit. It may be smaller than the area of the light emitting region of the second light distribution portion when viewed from the light distribution direction.
[Supplement]
In order to solve the above problems, a lighting device according to the present invention is configured to receive a first light emitting unit that emits laser light and a second light emitting unit that emits light based on a light emission principle different from the first light emitting unit. And at least one that distributes light from the first light emitting unit toward the first light distribution region and distributes light from the second light emitting unit toward the second light distribution region. And a light distribution unit.

  In the above configuration, the illumination device includes a first light emitting unit that emits light by receiving laser light, and a second light emitting unit that emits light by a light emission principle different from that of the first light emitting unit, and the light distribution unit includes: The light from the first light emitting unit is distributed toward the first light distribution region, and the light from the second light emitting unit is distributed toward the second light distribution region.

  Here, since the first light emitting unit emits light based on the light emission principle of receiving laser light, the first light emitting unit can emit light having higher brightness than the conventional light source, and the size of the first light emitting unit itself. Can be reduced in diameter. For this reason, the light distribution section can distribute the light from the first light emitting section to a small area farther away without diffusing.

  Further, in the above configuration, the lighting device includes a second light emitting unit that emits light by a light emission principle different from the first light emitting unit, in addition to the first light emitting unit, The light from one light emitting unit is distributed toward the first light distribution region, and the light from the second light emitting unit is distributed toward the second light distribution region.

  Therefore, according to the above configuration, the light from the first light emitting unit and the light from the second light emitting unit can be individually distributed by the light distributing unit. One light distribution region and a second light distribution region can be set respectively.

  For this reason, according to the above configuration, for example, the light from the second light emitting unit is distributed toward a wide region (second light distribution region), and a specific region (first distribution) that is desired to be brighter illuminated is used. It is possible to control the amount of light such as distributing light from the first light emitting unit toward the light region.

  As described above, according to the above configuration, the first light emitting unit and the second light emitting unit are provided, and the light from each light emitting unit can be individually distributed by the light distributing unit. Efficient illumination utilizing the characteristics of the light emitting unit and the second light emitting unit is possible.

  Therefore, according to the present invention, it is possible to realize an illumination device that uses the characteristics of a laser light source and other light sources.

  Moreover, in the illuminating device which concerns on this invention, it is preferable to further provide the position change part which changes the relative position of the said 1st light distribution area with respect to a said 2nd light distribution area.

  In the above configuration, the illumination device further includes a position changing unit that changes the relative position of the first light distribution region with respect to the second light distribution region, and thus the direction in which the light from the first light emitting unit is distributed. Can be controlled.

  Therefore, according to the above configuration, for example, it is possible to perform light amount control such as distributing light from the first light emitting unit toward a specific region that is desired to be brighter in the second light distribution region.

  The illumination device according to the present invention further includes a detection unit that detects an object in the second light distribution region, and the position changing unit is directed toward the object detected by the detection unit. It is preferable to change the position of the first light distribution region so that light from one light emitting unit is distributed.

  In the above configuration, since the detector further detects an object in the second light distribution region, the position changing unit distributes the light from the first light emitting unit toward the object detected by the detector. As described above, the position of the first light distribution region can be changed.

  Therefore, according to the above configuration, it is possible to control the amount of light such as increasing the amount of light distributed toward the detected object and illuminating the object more brightly.

  The illumination device according to the present invention further includes an identification unit that identifies, by image recognition, the type of the object detected by the detection unit, and the position changing unit is configured to identify the object identified by the identification unit. Changing the position of the first light distribution region so that light from the first light emitting unit is distributed toward the object when the type matches the type of the object registered in advance. Is preferred.

  In the above configuration, since the identification unit that identifies the type of the object detected by the detection unit by image recognition is further provided, it is possible to control the amount of light according to the type of the object identified by the identification unit.

  For example, the position changing unit distributes light from the first light emitting unit toward the object when the type of the object identified by the identifying unit matches the type of the object registered in advance. As described above, the position of the first light distribution region is changed. Thereby, it becomes possible to increase the amount of light distributed only to objects registered in advance among the objects detected by the detection unit, thereby illuminating brighter.

  Therefore, according to said structure, optimal light quantity control according to the kind of object is attained.

  The lighting device according to the present invention further includes a switching unit that switches between turning on and off of the first light-emitting unit, and the switching unit is configured to change the first light distribution region with respect to the second light distribution region by the position changing unit. When the relative position of one light distribution region is changed, it is preferable to turn on the first light emitting unit.

  The above configuration further includes a switching unit that switches on and off of the first light emitting unit, and the switching unit changes the relative position of the first light distribution region with respect to the second light distribution region by the position changing unit. When this is done, the first light emitting unit is turned on.

  Therefore, according to the above configuration, the first light emitting unit can be turned on as necessary, so that power consumption of the lighting device can be reduced.

  In the illumination device according to the present invention, the first light distribution region is set so that light from the first light emitting unit is distributed to a region including a central portion of the second light distribution region. It is preferable that

  In the above configuration, the first light distribution region is set so that the light from the first light emitting unit is distributed to the region including the central portion of the second light distribution region. Light from the first light emitting unit can be distributed toward the center of the light distribution region.

  Therefore, according to said structure, the light quantity distributed to the center part of a 2nd light distribution area can be increased, and it can illuminate brighter.

  In the illumination device according to the present invention, the first light distribution region is set so that light from the first light emitting unit is distributed to a peripheral region of the second light distribution region. It is preferable.

  In the above configuration, since the first light distribution region is set so that the light from the first light emitting unit is distributed to the peripheral region of the second light distribution region, the second light distribution region It becomes possible to distribute the light from the first light emitting unit toward the peripheral region.

  Therefore, according to said structure, a wider area | region can be illuminated with an illuminating device.

  In the illumination device according to the present invention, the first light emitting unit is disposed at a focal point of the light distribution unit, and the second light emitting unit is disposed at a position excluding the focal point. preferable.

  In said structure, the 1st light emission part is arrange | positioned in the focus of a light distribution part, and the 2nd light emission part is arrange | positioned in the position except the focus of a light distribution part. For this reason, the light source device can distribute the light from the first light emitting unit farther toward the first light distribution region by the light distribution unit, and can also distribute the light from the second light emitting unit. It is possible to distribute light over a wide range toward the second light distribution region.

  Therefore, according to the above configuration, the light from the first light emitting unit and the light from the second light emitting unit can be individually distributed by one light distribution unit, so that the lighting device can be reduced in size. Can be

  Moreover, in the illuminating device which concerns on this invention, it is preferable that the said light distribution part is provided for every said 1st light emission part and said 2nd light emission part.

  In said structure, since a light source device is provided with a light distribution part for every 1st light emission part and 2nd light emission part, the light from a 1st light emission part and the light from a 2nd light emission part, respectively Light can be distributed to the first light distribution region or the second light distribution region by the independent light distribution unit.

  Therefore, according to said structure, it becomes easy to distribute the light from a 1st light emission part and a 2nd light emission part separately.

  In the illumination device according to the present invention, it is preferable that the first light emitting unit includes a phosphor that emits fluorescence upon receiving the laser light.

  In the above configuration, since the first light emitting unit includes at least a phosphor that emits fluorescence when receiving laser light, fluorescence emitted from the phosphor can be used as illumination light. In addition, by including different types of phosphors in the first light emitting unit, it is possible to mix fluorescent light of different colors and obtain illumination light of desired chromaticity.

  Therefore, according to said structure, the light source device can distribute the illumination light of desired chromaticity toward the 1st light distribution area | region.

  In the illumination device according to the present invention, the first light emitting unit includes a phosphor that emits fluorescence upon receiving the laser light, and the second light emitting unit is disposed at a focal point of the light distribution unit. It is a light emitting diode, and the phosphor is preferably applied to the surface of the light emitting diode.

  According to said structure, the 1st light emission part contains the fluorescent substance which receives a laser beam and emits fluorescence, The said fluorescence is the surface of the light emitting diode which is a 2nd light emission part arrange | positioned in the focus of a light distribution part. Thus, the first light emitting unit and the second light emitting unit can be integrally formed.

  Therefore, according to said structure, since it becomes possible to reduce the number of parts of an illuminating device, the structure of an illuminating device can be simplified.

  Moreover, in order to solve said subject, the vehicle headlamp which concerns on this invention is provided with the said illuminating device, It is characterized by the above-mentioned.

  Therefore, according to said structure, the vehicle headlamp which utilized the characteristic of a laser light source and another light source together is realizable.

  In addition, a vehicle headlamp according to the present invention is a vehicle headlamp provided with the illumination device in order to solve the above-described problem, and the type of the object includes a road sign, a pedestrian, or an obstacle. Is pre-registered.

  In the above configuration, when the object detected by the detection unit is a road sign, a pedestrian, or an obstacle, the light from the first light emitting unit is distributed toward the road sign, the pedestrian, or the obstacle. As described above, the position changing unit changes the position of the first light distribution region. As a result, among the objects detected by the detection unit, it is possible to increase the amount of light to be distributed only to road signs, pedestrians or obstacles, and to illuminate brighter.

  Therefore, according to the above configuration, the road sign, the pedestrian, or the obstacle can be brightly illuminated so that the road sign can be accurately read or the pedestrian or the obstacle can be accurately recognized by visual observation. As a result, a safe driving environment can be realized.

  Moreover, in order to solve said subject, the vehicle headlamp which concerns on this invention is a vehicle headlamp provided with the said illuminating device, Comprising: A said 1st light distribution area | region is light distribution of a travel light The second light distribution area is set so as to satisfy a characteristic standard, and the second light distribution region is set so as to satisfy a light distribution characteristic standard of a passing lamp.

  According to the above configuration, the first light distribution area is set so as to satisfy the light distribution characteristic standard of the traveling lamp, and the second light distribution area satisfies the light distribution characteristic standard of the passing lamp. Is set.

  Therefore, according to said structure, the vehicle headlamp which satisfy | filled the light distribution characteristic reference | standard of a vehicle headlamp can be implement | achieved suitably.

  Further, a vehicle headlamp according to the present invention is a vehicle headlamp provided with the illumination device in order to solve the above-described problem, and an operation amount detection unit that detects a handle operation amount of a driver; A switching unit that switches on and off of the first light emitting unit according to the handle operation amount detected by the operation amount detecting unit, and is provided in a left or right peripheral region of the second light distribution region. The first light distribution region is set so that light from the first light emitting unit is distributed, and the switching unit is configured to turn the vehicle specified by the operation amount detection unit. The first light emitting unit is turned on so that light from the first light emitting unit is distributed toward the light source.

  In the above configuration, the first light distribution region is set so that the light from the first light emitting unit is distributed to the left or right peripheral region of the second light distribution region. The first light emitting unit is turned on so that light from the first light emitting unit is distributed in a direction in which the vehicle bends according to the operation amount of the steering wheel detected by the operation amount detecting unit.

  Therefore, according to the above configuration, the traveling direction of the vehicle can be illuminated brightly, so that a safe driving environment can be realized and power consumption can be reduced.

  The present invention can be expressed as follows. That is, the lighting device according to the present invention simultaneously turns on the first projector that uses a light-emitting unit excited by a laser as a light source and the second projector that has a light source that uses other light emission principles. It is characterized by doing.

  Moreover, the projector according to the present invention is characterized in that the first projector illuminates the center, and the second projector illuminates the periphery thereof.

  Moreover, the floodlighting device according to the present invention is characterized in that the first floodlight is turned on as necessary.

  Moreover, the light projector which concerns on this invention is characterized by illuminating the center with a 1st light projector as needed at the time of lighting of a 2nd light projector.

  The light projector according to the present invention is characterized in that the second light projector is used as a low beam and a high beam is formed by adding the first light projector.

  Moreover, the floodlighting device according to the present invention is characterized by monitoring the floodlighting situation that is being projected by the second floodlight and illuminating the necessary area with the first floodlight as necessary. Yes.

  In the light projecting device according to the present invention, the necessary area is a portion where a road sign, a pedestrian, and an obstacle exist.

  In the light projecting device according to the present invention, the first projector has a mechanism capable of controlling the light projecting area.

  Further, the light projector according to the present invention is characterized in that the second projector illuminates the center, and the first projector illuminates the peripheral portion thereof as necessary.

  Moreover, the projector according to the present invention is characterized in that the first projector illuminates the right or left side of the projection area of the second projector based on the information obtained from the handle operation. Yes.

  The present invention can be suitably applied to various lighting devices, particularly vehicle headlamps.

DESCRIPTION OF SYMBOLS 1a Laser light source unit 1b Laser light source unit 1A Laser light source unit 1B Laser light source unit 1C Laser light source unit 1D Laser light source unit 1F Laser light source unit 1G Laser light source unit 1H Laser light source unit 2a LED light source unit 2b LED light source unit 13 Light emission part (1st light emission part) Light emitting part)
13a Light emitting part (first light emitting part)
14 Reflector (light distribution part)
14A reflector (light distribution part)
16 Mirror (position change part)
18 Convex lens (light distribution part)
21 Elliptical mirror (light distribution part)
23 LED (second light emitting unit)
24 reflector (light distribution part)
30 MEMS mirror (position changer)
31 2-axis piezo mirror element (position changing unit)
32a Lens (position changing unit)
33 Integrated LED (1st light emission part, 2nd light emission part)
38 Galvano mirror (position change part)
38a Galvano mirror (position change part)
38b Galvano mirror (position change part)
61 Object detection unit (detection unit)
62 Object identification unit (identification unit)
63 Position changing unit 64 ON / OFF switching unit (switching unit)
65 Operation amount detection unit 100 Head lamp system (lighting device / vehicle headlamp)
101 Headlamp system (lighting device / vehicle headlamp)
102 Headlamp system (lighting device / vehicle headlamp)
103 Headlamp system (lighting device / vehicle headlamp)
A1 Light distribution spot (first light distribution area)
A2 Light distribution spot (first light distribution area)
a1 Light distribution area (second light distribution area)
a2 Light distribution area (second light distribution area)
O Pedestrian (object)

Claims (3)

A laser light source that emits laser light;
A first light emitting unit including a phosphor that emits light upon receiving the laser light, and a first light distribution unit that distributes light from the first light emitting unit;
A second light-emitting unit including an LED and a second light-distributing unit that distributes light from the second light-emitting unit,
The first light distribution unit and the second light distribution unit are independent optical systems,
The luminance of the first light emitting unit is set to be greater than the luminance of the second light emitting unit;
A light distribution pattern of a passing lamp is formed using light distributed from the second light distribution unit,
A front light distribution pattern for a traveling light is formed using light distributed from the first light distribution unit and light distributed from the second light distribution unit. Lighting. The vehicular headlamp according to claim 1, wherein the luminance of the first light emitting unit is 320 cd / mm ² or more.   The area of the light emitting region of the first light distribution part when viewed from the light distribution direction of the first light distribution part is the second area when viewed from the light distribution direction of the second light distribution part. The vehicular headlamp according to claim 1, wherein the vehicular headlamp is smaller than an area of a light emitting region of the light distribution unit.

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