JP6161504B2 - Automotive headlamp - Google Patents

Description

  The present invention relates to an in-vehicle headlamp that includes a light source that irradiates a light distribution area for passing and a light source that irradiates a light distribution area for traveling.

  Incandescent bulbs such as halogen bulbs and discharge bulbs have been used as light sources used in vehicle lamps (vehicle headlamps). However, these conventional light sources are large in size and generate heat. Therefore, there was a limit to the miniaturization of the lamp.

  Therefore, attempts have been made to reduce the size of the lamp by using a semiconductor light emitting element such as a light emitting diode (hereinafter referred to as “LED”) that is close to an ideal point light source and generates a small amount of heat.

  By the way, in-vehicle headlamps, it is necessary to irradiate a plurality of patterns. In other words, when traveling at high speeds or in the suburbs, the irradiation pattern of a high beam (hereinafter referred to as a traveling light) to make it easy to see the surroundings of the far-off road and the front road, and when driving in the city. For example, it is necessary to irradiate the driver of the oncoming vehicle and the pedestrian facing each other with a low beam (hereinafter referred to as a “passing light”).

  An LED unit for irradiating light below a cut-off line for separating the upper and lower light and dark for forming the irradiation pattern for the passing light, and a lower part of the cut-off line for forming the irradiation pattern for the traveling light There has been proposed a vehicular lamp that uses an LED unit that irradiates light in a wide range in front of the vehicle together with an LED unit that irradiates light (for example, Patent Document 1).

  According to the conventional vehicular lamp described above, if a passing light that does not irradiate light above the cut-off line is used, when the vehicle travels on a flat road, the light emitted by the passing light is oncoming. Because the driver and pedestrians facing each other are not visible, the former will not be dazzled.

JP2007-317604

  However, when the vehicle travels on an uneven road, and when the vehicle tilts due to acceleration / deceleration, the passing light distribution area delimited by the cut-off line moves up and down, and the cut-off line becomes the driver of the oncoming vehicle and If it moves above the pedestrian's eyes, the light emitted from the passing light directly irradiates the former's eyes, which may induce dazzling.

  As described above, the in-vehicle headlamp described in Patent Document 1 has a problem that the passing light may induce dazzling to the driver and pedestrian of the oncoming vehicle.

  The present invention has been made in order to solve the above-described problems, and each of the light sources of the passing lamps is irradiated with the same amount of light, although the amount of light is smaller than that when a single passing lamp light source is used. When the irradiation light emitted by the passing light reaches the eyes of the driver and pedestrian of the oncoming vehicle by dividing the light source with a pattern (light distribution area) and installing it in a wide area at the front of the vehicle An in-vehicle headlamp that can reduce the glare of the vehicle is provided.

The in-vehicle headlamp according to the present invention includes a plurality of passing light source units including a light source that irradiates a passing light distribution area, and a traveling light source unit that includes a light source that irradiates the traveling light distribution area. and a housing which encloses a lamp light source unit and the running lamp light source unit, the inside of the maximum area formed by connecting the outer peripheral edge of the opening of the plurality ɽ are differences lamp light source unit, all of the running includes the opening of the lamp light source unit, when lighting the to be differences lamp light source unit, is intended to be turned at a lower amount than the amount at the time of lighting the running lamp light source unit as the original running lights .

  According to the in-vehicle headlamp device of the present invention, the glare that the passing light gives to the driver and the pedestrian of the oncoming vehicle can be reduced as compared with the conventional passing light.

It is a figure for demonstrating the magnitude | size of the part which seems to emit light of a light source. It is a figure for demonstrating the magnitude | size of the part which looks like light emission of the light source concerning a vehicle-mounted headlamp. The state which looked at the vehicle-mounted headlamp from the direction (front) of the driver | operator's eyes of an oncoming vehicle is shown. 1 shows a conventional in-vehicle headlamp equipped with a traveling lamp and a passing lamp. A general light distribution area for passing by a passing lamp is shown. It is a figure for demonstrating the general light distribution area | region by the vehicle-mounted headlamp. It is a figure for demonstrating the light distribution area | region by the vehicle-mounted headlamp which concerns on this invention. 2 shows the arrangement of a light source unit for a passing lamp and a light source unit for a traveling lamp according to Embodiment 1 of the present invention. The modification of arrangement | positioning of the light source unit for passing lamps and the light source unit for driving lights which concerns on Embodiment 1 of this invention is shown. 1 shows a light source unit for a passing lamp according to Embodiment 1 of the present invention. 1 shows a light source unit for a passing lamp according to Embodiment 1 of the present invention. The modification of the light source unit for passing lamps concerning Embodiment 1 of this invention is shown. The modification of the light source unit for passing lamps concerning Embodiment 1 of this invention is shown. 1 shows a light source unit for a traveling lamp according to Embodiment 1 of the present invention. The modification of the light source unit for driving lights which concerns on Embodiment 1 of this invention is shown. 1 shows a dual-purpose light source unit according to Embodiment 1 of the present invention. The modification of the combined light source unit which concerns on Embodiment 1 of this invention is shown. 1 shows a projection lens and an adjustment member according to Embodiment 1 of the present invention. 6 shows a modification of the projection lens and the adjustment member according to Embodiment 1 of the present invention. 2 shows an installation example of a projection lens, an adjustment member, and a fixing member according to Embodiment 1 of the present invention. 1 is a cross-sectional view of a light source unit for a passing lamp in which a projection lens and an adjustment member according to Embodiment 1 of the present invention are integrated. 1 is a sectional view of a dual-purpose light source unit in which a projection lens and an adjustment member according to Embodiment 1 of the present invention are integrated. The example of the installation to the heat radiating member display of the combined light source unit which concerns on Embodiment 1 of this invention, and the light source unit for passing lamps is shown. It is a figure for demonstrating the example of installation and an opening part to the heat dissipation member figure of the combined light source unit which concerns on Embodiment 1 of this invention, and the light source unit for passing lamps. 1 shows a configuration of an in-vehicle headlamp according to Embodiment 1 of the present invention. 1 shows a light source lighting device of an in-vehicle headlamp according to Embodiment 1 of the present invention. It shows about the modification of the lighting device for light sources of the vehicle-mounted headlamp which concerns on Embodiment 1 of this invention. It shows about the light source unit for passing lamps concerning Embodiment 2 of this invention. It shows about the modification of the light source unit for passing lamps concerning Embodiment 2 of this invention. It is shown about the side view of the modification of the light source unit for passing lamps concerning Embodiment 2 of this invention. It shows about the light source unit for driving lights which concerns on Embodiment 2 of this invention. It shows about the vehicle-mounted headlamp based on Embodiment 2 of this invention. It shows about the modification of the vehicle-mounted headlamp based on Embodiment 2 of this invention. It shows about the modification of the light source unit for passing lamps concerning Embodiment 2 of this invention. It shows about the modification of the light source unit for driving lights concerning Embodiment 2 of this invention. It shows about the modification of the vehicle-mounted headlamp based on Embodiment 2 of this invention.

  Hereinafter, the details of the embodiment of the present invention will be described. Note that the same reference numerals in the detailed description of the embodiment or the drawings indicate the corresponding parts, and the description is not repeated.

Embodiment 1 FIG.
First, a method for reducing the glare that a light source gives to a person when the person sees the light source that emits light will be described. As an example of a light source that emits light, a light bulb including a filament is considered. FIG. 1 shows the change in the size of the portion of the light source that appears to emit light when the outer glass of the light bulb is transparent glass 1 and when it is ground glass 4 (glass that has been subjected to a surface treatment that scatters light). It is shown.

  As shown in FIG. 1 (a), when looking directly at the light bulb emitting light from the filament 2 contained in the outer glass made of the transparent glass 1, the light emitted from the filament 2 having a small area that glows red is dazzled. I feel it.

  However, in a light bulb in which the outer glass is ground glass 4 or the light is scattered by applying fine particles inside the outer glass as shown in FIG. The luminosity of the large area bulb appears to shine. For this reason, the glare is reduced from the light bulb shown in FIG.

  The filament 2 as a light emitter, the outer glass 1 enclosing the filament 2, and the reflecting mirror that reflects the light emitted from the filament 2 and directs it in a desired direction as shown in FIG. In an in-vehicle headlamp 10a in which a single light source unit 6 having 5 is installed in a housing 7, light is scattered like the above-mentioned bulb in order to form an irradiation pattern essential as a headlamp. Therefore, as shown in the in-vehicle headlamp 10b in FIG. 2 (b), the single light source unit 6 is divided and dispersed into light sources having a small light emission amount, as shown in FIG. A plurality are installed in the body 7.

  In the in-vehicle headlamp 10b shown in FIG. 2B, the light source unit 6 having a small light emission amount is dispersed to show the light emitting part larger. Accordingly, in FIG. 2B, similarly to the above-described light bulb, even if the driver or pedestrian of the oncoming vehicle looks directly at the in-vehicle headlamp, the single light source unit 6 in FIG. The glare is reduced from the in-vehicle headlamp 10a to be used.

  FIG. 2A shows a single light source comprising a filament 2 as a light emitter, an outer glass 1 containing the filament 2, and a reflecting mirror 5 that reflects light emitted from the filament 2 and directs it in a desired direction. The in-vehicle headlamp 10a in which the unit 6 is installed in the housing 7 is shown.

  Similarly, FIG. 2 (b) shows that the above-mentioned light source unit 6 is divided and dispersed into light sources having a light emission amount smaller than that of the filament 2 shown in FIG. The headlamp 10b for an object is shown.

  A plurality of light sources are divided and dispersed, and a plurality of light sources are installed in the housing 7 to increase the light emitting portion (area). In addition, it is the same as that of the structure shown to Fig.2 (a) except that each light source unit 6 is a small light emission quantity, and the arrangement | positioning, The light quantity which the filament 2 shown in FIG. Assume that the total amount of light emitted from the plurality of filaments 2 shown in FIG.

  Incidentally, a front transmission part 8 (not shown) is provided on the front surface of the housing 7 of the in-vehicle headlamps 10a and 10b to transmit the light emitted from the filament 2 to the outside. Moreover, although the structure which uses the reflective mirror 5 is shown in the vehicle-mounted headlamp 10b, it is not limited to this shape, For example, it is good also as a structure which uses a projection lens so that it may mention later.

  Next, a region that appears to emit light will be described. FIG. 3 shows a state in which the in-vehicle headlamps 10a and 10b shown in FIG. 2 are viewed from the direction (front) of the driver's eye 3 of the oncoming vehicle. FIG. 3A shows an in-vehicle headlamp 10 a in which a single light source unit 6 is installed in the housing 7. FIG. 3B shows a plurality of light source units 6 in the housing 7. The in-vehicle headlamp 10b installed in FIG.

  A region that appears to emit light, that is, a region that apparently emits light will be described with reference to FIG. In the state where the vehicle headlamps 10a and 10b shown in FIGS. 3 (a) and 3 (b) are turned on, the light is emitted from the filament 2 to the eyes 3 of the driver of the oncoming vehicle as viewed from the front. Light is reflected by the reflecting mirror 5 and incident.

  That is, the driver's eye 3 of the oncoming vehicle can see one filament 2 bright from the vehicle headlamp 10a or a plurality of filaments 2 with a small amount of light emitted from the vehicle headlamp 10b.

  Here, when the in-vehicle headlamp is viewed from the front, a portion that appears bright is defined as the opening 9. In other words, the opening of the reflecting mirror 5 is defined as the opening 9 of the light source in the case of the in-vehicle headlamps 10a and 10b. In FIG. 3, the opening 9 is shown smaller than the size of the reflecting mirror 5 for easy viewing, but actually includes the entire reflecting mirror.

  In the above description, regarding the light source unit 6 using the reflecting mirror 5 as shown in FIGS. 3A and 3B, the opening of the reflecting mirror 5 is defined as the opening 9 of the light source, which will be described later. In the light source unit using such a projection lens, the projection lens that transmits light or the opening of the reflecting mirror 5 that reflects light leaking around the projection lens corresponds to the opening 9.

  As shown in FIG. 3B, a plurality of light source units 6 are provided, and the plurality of light source units 6 are dispersed and arranged in the housing 7 of the in-vehicle headlamp 10b. ) Can be enlarged, that is, the area of the region that appears to emit light (the opening 9 of the light source unit 6) is larger than when the single light source unit 6 shown in FIG. 3A is used. can do. In this way, by enlarging the region that appears to emit light, the glare that the in-vehicle headlamp 10b gives to the driver of the oncoming vehicle, as in the case of the above-described light bulb, is shown in FIG. This can be reduced compared to the case where the single light source unit 6 shown in FIG.

  Next, the configuration of a general in-vehicle headlamp 10 will be described. The in-vehicle headlamp 10 requires a traveling lamp that irradiates the traveling light distribution area in front of the vehicle and a passing lamp that irradiates the passing light distribution area.

  FIG. 4 shows a conventional in-vehicle headlamp 10 in which the passing lamp 13 and the traveling lamp 12 are formed by independent light sources. As shown in FIG. 4, the in-vehicle headlamp 10 is provided with a traveling lamp 12 at a position near the center of the vehicle 11 when the vehicle 11 is viewed from the front, and is used for passing by a position near the side surface of the vehicle 11. A lamp 13 is provided.

  When traveling at night, in addition to the passing lamp 13, the traveling lamp 12 is lit to illuminate the front of the vehicle 11, thereby ensuring a forward view as a traveling lamp. When there is an oncoming vehicle or a pedestrian ahead, the driving light 12 is turned off to prevent the driver or pedestrian of the oncoming vehicle from being dazzled as a passing light.

  FIG. 5 shows the passing light distribution region 16. As shown in FIG. 5, the passing light distribution area 16 has a cut-off line 15 that is a boundary between the upper and lower sides so that the irradiation light of the vehicle headlamp does not reach the driver of the oncoming vehicle. The upper part of the cut-off line 15 is not irradiated with light. As shown in FIG. 5, the cut-off line 15 is formed horizontally on the oncoming lane side, and is formed above the horizontal on the sidewalk side.

  In the description of the passing light distribution area 16 according to the present invention, a case where left-hand traffic is basic, such as Japanese road traffic, is described. When the vehicle 11 passes on the right side, the direction is reversed.

  FIG. 6 shows a light distribution for a traveling lamp in which the passing lamp 13 and the traveling lamp 12 are turned on simultaneously. A wide forward view is ensured when there is no oncoming vehicle or pedestrian when traveling at night. As shown in FIG. 6, the traveling light distribution area 17 illuminates the front including the lower part of the aforementioned cut-off line 15.

  7 (a) and 7 (b) show a traveling light distribution region 17 that illuminates the front, focusing on the upper part of the aforementioned cut-off line 15 when the traveling lamp 12 according to the present invention is turned on. It is shown.

  FIG. 8 shows an arrangement example of the light source units constituting the passing lamp 13 and the traveling lamp 12 according to the first embodiment of the present invention. In FIG. 8, a group of a plurality of passing lamp units 13 a is shown as a passing lamp 13.

  FIG. 8A shows a perspective view of the in-vehicle headlamp 10 mounted on the front surface of the vehicle 11. FIG. 8B shows a shape of the in-vehicle headlamp 10 shown in FIG. 8 (a) and 8 (b), a single traveling light source unit 12a is disposed at the center of the in-vehicle headlamp 10 when the in-vehicle headlamp 10 is viewed from the front. A plurality of light source units 13a for passing lamps are arranged on the left and right sides.

  Further, as shown in FIG. 8 (b), the traveling lamp 12 (running lamp light source unit 12a) is placed inside the maximum area 20 formed by connecting the outer peripheral edge of the opening 9 of the passing lamp light source unit 13a. An opening 9 is included. In the present invention, this configuration makes it possible to enlarge the area (area) of the passing lamp 13 that appears to emit light compared to the conventional passing lamp.

  Further, in the arrangement of the light source as shown in FIG. 8, when only the passing lamp 13 is turned on, that is, when only the plurality of passing lamp light source units 13a are turned on, the traveling lamp 12, that is, the traveling lamp light source unit 12a. Since the opening 9 of the vehicle does not emit light, when the in-vehicle headlamp 10 is viewed from the front, there is a region that does not emit light at the center, which impairs the recognition of the vehicle to the driver of the oncoming vehicle. There is a possibility.

  For example, if the passing lamp 13 is composed of a plurality of passing lamp light source units 13a, it may be recognized as a sparsely distributed lamp depending on the arrangement of the passing lamp light source unit 13a because it differs from a general passing lamp. The lamp may not be recognized as an in-vehicle headlamp.

  Then, when it lights as a passing lamp, the light source unit 12a for driving lights is made to light with the light quantity lower than the light quantity which lights as a running light. At this time, the amount of light emitted when the light source unit 12a for running lights is turned on is set by reducing the amount of light so that the driver of the oncoming vehicle does not feel dazzling.

  FIG. 9 shows a modification of the arrangement example of the passing lamp 12 and the traveling lamp 13 according to the first embodiment of the present invention. Fig.9 (a) has shown the perspective view of the vehicle-mounted headlamp 10 mounted in the vehicle. In order to make the drawing easy to see, the light source unit 13a for the passing lamp is indicated by a white circle and the light source unit 12a for the traveling lamp is indicated by a black circle. As shown in FIG. 9A, the in-vehicle headlamp 10 uses a plurality of light source units for passing lamps 13a and a plurality of light source units for traveling lights 12a. FIG.9 (b) has shown the shape which looked at the vehicle-mounted headlamp 10 shown to Fig.9 (a) from the front.

  As shown in FIG. 9 (b), the openings 9 of all the traveling light source units 12a are included inside the largest area 20 formed by connecting the outer peripheral edges of the openings 9 of the low light source units 13a. It is. In this way, by increasing the number of passing lamp light source units 13a on the outer periphery of the traveling lamp light source unit 12a and arranging them, the area (area) of the passing lamp 13 that appears to emit light is expanded. can do.

  9 (a) and 9 (b), the low-light light source units 13a are arranged in rows so as to surround the upper and lower sides of a row of running-light light source units 12a arranged in the horizontal direction and the center side of the vehicle. Arrange to form. 9 (a) and 9 (b), the travel lamp light source unit 12a and the passing lamp light source unit 13a are arranged at equal intervals. The number of rows in which the lamp light source units 13a are arranged and the installation interval between the light source units are not limited to this.

  For example, the traveling lamp light source unit 12a and the passing lamp light source unit 13a may be mixed, or the installation intervals may be uneven. Since the arrangement of the light source units can be freely changed, not only the degree of freedom in installing the lighting circuit described later is improved, but also the optimization of the light source unit recognized as a vehicle headlamp can be achieved.

  According to the in-vehicle headlamp 10 according to Embodiment 1 of the present invention, a plurality of light source units 13a for passing lamps including a light source 31 that irradiates a light distribution area for passing light sources, and a light source that irradiates a light distribution area for traveling 32, and a casing 7 that encloses the light source unit 13a for the passing lamp and the light source unit 12a for the passing lamp, and connects the outer periphery of the opening of the light source unit 13a for the passing lamp. Openings of all the traveling light source units 12a are included inside the maximum area that can be obtained.

  Therefore, a portion (area) emitting light as a passing light of the in-vehicle headlamp 10 can be shown large, and glare when the driver or pedestrian of the oncoming vehicle looks directly at the in-vehicle headlamp 10. Is reduced.

  Further, as shown in FIG. 9, even when the low-light light source unit 13a and the traveling light source unit 12a are arranged, when the low-light light is turned on, the low-light light source unit 12a is turned on as the traveling light. The light may be turned on with a light amount lower than the light amount. However, the amount of light emitted by the light source unit 12a for traveling lamps when it is turned on as a passing lamp is set by reducing the amount of light so that the driver of the oncoming vehicle does not feel dazzling.

  According to the in-vehicle headlamp 10 according to the first embodiment of the present invention, when turning on as a passing light, the passing light source unit 13a is turned on, and the running light source unit 12a is used as an original running light. Since the light is turned on with a light amount lower than the light amount when the light is turned on, the recognizability of the driver of the oncoming vehicle can be ensured.

  FIG. 10 shows the structure of the passing lamp 13 having the passing lamp light source unit 13a using the reflecting mirror 5 according to the first embodiment of the present invention. As shown in FIG. 10, the low-light source unit 13 a has a light source 21, a reflecting mirror 5, and a projection lens 26, and the reflecting mirror 5 reflects the light emitted from the light source 21 so as to enter the projection lens 26. In addition, the light source 21 is disposed so as to cover the front with an opening.

  The reflecting mirror 5 has a shape using a part of a spheroid, and the reflecting mirror 5 and the light source 21 are fixed to a fixing member 23. The fixing member 23 is fixed to the substrate 24. A projection lens 26 is arranged in front of the light source 21.

  The alternate long and short dash line in FIG. 10 indicates the optical axis 25 a of the light source unit 13 a for the passing lamp, and passes through the end side of the fixing member 23 and the center of the projection lens 26. As the light source 21, an LED chip that is a semiconductor light source or a phosphor that emits visible light by excitation of a laser emitted from a laser diode (LD) can be used.

  As the fixing member 23, aluminum having an insulating property on the surface can be used. Further, a metal such as aluminum can be used for the substrate 24, and the heat generated by the light source 21 can be efficiently dissipated by configuring the fixing member and the substrate 24 with a material having high thermal conductivity such as aluminum. it can.

  The fixing member 23 can operate the cut-off line shape by the shape of its end side. By providing the slope 23b on the opposite lane side, it is possible to form the cut-off line 15 that has been obliquely raised on the sidewalk side as already shown in FIG.

  FIG. 11 shows a sectional view in a vertical plane including the optical axis 25a of the low-light source unit 13a shown in FIG. The arrows shown in FIG. 11 indicate the optical path of the light emitted from the light source 21, and the alternate long and short dash line indicates the optical axis 25a of the low-light source unit 13a.

  As shown in FIG. 11, after the light emitted from the light source 21 spreads radially, a part of the light is reflected by the spheroid reflecting mirror 5 installed so as to cover the light source 21, and the upper surface of the fixing member 23. The light distribution pattern 16 for passing is formed by reflecting by the surface 23a or praising the edge of the upper surface 23a.

  In particular, the horizontal cut-off line 15 on the opposite lane side is formed by the light that compliments the horizontal edge on the sidewalk side of the fixing member 23 shown in FIG. 10, and the upper surface 23b that is the inclined edge on the opposite lane side is praised. An oblique cut-off line 15 raised to the sidewalk side by light is formed.

  In the passing lamp light source unit 13a, since the projection lens 26 is installed, the passing light distribution pattern formed by the reflecting mirror 5 and the fixing member 23 is inverted vertically and horizontally by the projection lens 26, and in front of the vehicle 11. A passing light distribution region 16 is formed.

  As described above, according to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the light source that irradiates the light distribution area for passing and the light source 21 that irradiates the light distribution area for traveling are semiconductor light sources. Therefore, the vehicle-mounted headlamp 10 with good energy efficiency can be obtained.

  Next, a first modification of the low light source unit 13a will be described. Specifically, the light source unit 13a for passing lamps includes a light source 21, a projection lens 26, and a light distribution adjusting unit 27 that forms a light distribution pattern for passing by reflecting a part of light emitted from the light source. The case of using will be described.

  However, for convenience of explanation, the light source 21 is classified into two types in the following. That is, the light source 21 is classified into a light source 31 that irradiates the light distribution area for passing and a light source 32 that irradiates the light distribution area for travel.

  FIG. 12 shows a light source unit 13a for a passing lamp that uses a projection lens 26, a light distribution adjusting unit 27 having a reflection surface on the upper surface, and a light source 31 that irradiates a light distribution region for passing. FIG. 12A shows a case where the passing lamp light source unit 13a is viewed from the side, and the arrows in the figure show the optical path of the light emitted from the light source 31 that irradiates the passing light distribution area. It is.

  The alternate long and short dash line in FIG. 12 indicates the optical axis 25b of the low-light source unit 13a. The optical axis 25b is a straight line passing through the upper surface 27a of the light distribution adjusting unit 27 and the center of the projection lens 26. F indicates the rear focal point of the projection lens 26. FIG. 12B is a perspective view of the light distribution adjusting unit 27 described above. 12A and 12B show the optical axis 25b aligned.

  As shown in FIG. 12A, the light emitted from the light source 31 that irradiates the light distribution region for passing is reflected by the reflection surfaces of the upper surface 27a and the inclined surface 27b of the light distribution adjusting unit 27, and passes the light distribution pattern for passing. And enters the projection lens 26. In the passing lamp light source unit 13a shown in FIG. 12, since the projection lens 26 is installed, the passing light distribution pattern formed by the light distribution adjusting unit 27 is inverted vertically and horizontally by the projection lens 26, so that the vehicle A light distribution region 16 for passing as shown in FIG.

  The formation of the cut-off line by the upper surface of the light distribution adjusting unit 27 and the edges of the upper surface is the same as the configuration of FIG.

  Next, a second modification of the low light source unit 13a will be described. FIG. 13 shows a light source unit 13a for passing lamps using a projection lens 26, a light distribution adjusting unit 28, and a light source 31 that irradiates a light distribution region for passing. The light distribution adjusting unit 28 forms a light distribution pattern for passing by reflecting the light emitted from the light source 31 that irradiates the light distribution region for passing on the inner surface, and makes the light incident on the projection lens 26. The light distribution adjusting unit 28 is made of a transparent material such as acrylic or glass.

  FIG. 13A shows a case where the passing lamp light source unit 13a is viewed from the side, and the arrows in the figure show the optical path of the light emitted from the light source 31 that irradiates the passing light distribution area. It is. FIG. 13B is a perspective view of the light distribution adjusting unit 28. F indicates the rear focal point of the projection lens 26.

  A one-dot chain line in FIG. 13 indicates the optical axis 25c of the low-light source unit 13a, and the optical axis 25c is a straight line passing through the bottom surface 28a of the light distribution adjusting unit 28 and the center of the projection lens 26. 13A and 13B show the optical axis 25c aligned.

  As shown in FIG. 13A, the light emitted from the light source 31 that irradiates the passing light distribution region is transmitted through the transparent light distribution adjusting unit 28 and reflected by the inside of the bottom surface 28a and the inside of the inclined surface 28b. Thus, a passing light distribution pattern is formed and incident on the projection lens 26.

  In the passing lamp light source unit 13a as shown in FIG. 13, since the projection lens 26 is installed, the passing light distribution pattern formed by the light distribution adjusting unit 28 is inverted vertically and horizontally by the projection lens 26. A passing light distribution region 16 is formed in front of the vehicle 11. The formation of the cut-off line by the bottom surface of the light distribution adjusting unit 28 and the edge of the bottom surface is the same as the configuration of FIG.

  In this way, the passing light distribution pattern 16 may be formed by using the spheroid reflecting mirror 5 as shown in FIG. 11, or the light distribution adjusting unit 27 as shown in FIG. 12 or FIG. , 28 may be used.

  According to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the passing lamp light source unit 13a includes the projection lens 26 provided corresponding to each light source 31 that irradiates the passing light distribution area. The light distribution adjusting unit is provided between the light source 31 that irradiates the light distribution area for passing and the projection lens 26, and forms the light emitted from the light source 31 that irradiates the light distribution area for passing in the light distribution pattern for the passing lamp. 27 and 28, the suitable light distribution area 16 for passing can be irradiated.

  In the above description, the passing lamp that irradiates the passing light distribution region 16 has been described. Next, the traveling lamp 12 using the traveling lamp light source unit 12a will be described. 14 and 15 are obtained by inverting the positional relationship between the light distribution adjusting unit and the light source of the above-mentioned light source unit 13a for passing lamps with respect to the optical axis.

  Therefore, the above-mentioned low-light light source unit 13a illuminates the lower side of the cut-off line by the light source 32 that irradiates the traveling light region, the projection lens 26, the light distribution adjustment unit 45, and the light distribution adjustment unit 46. In contrast, the traveling light source unit 12a is a light source unit that illuminates the upper part of the cutoff line. Since there is no light distribution rising on the sidewalk side in the traveling light area, the reflection surface of the light distribution adjustment unit 45 and the edge of the inner surface of the light distribution adjustment unit 46 are linear.

  As described above, according to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the traveling lamp light source unit 12a is provided corresponding to each light source 32 that irradiates the traveling light distribution area. In addition, since the projection lens 26 is provided, it is possible to irradiate a suitable traveling light distribution region 17.

  In the above embodiment, the light source unit 13a for passing lamps and the light source unit 12a for traveling lights are configured separately. Next, the light source 31 that irradiates the light distribution area for passing, and the light distribution for traveling The dual-purpose light source unit in which the light source 32 that irradiates the area is integrally formed will be described.

  FIGS. 16 and 17 show a combined light source unit 30a including a light source unit 13a for passing lamps and a light source unit 12a for traveling lights. The light source 31 above the optical axis irradiates the passing traveling area, and the light source 32 below the optical axis irradiates the traveling light distribution area.

  In the in-vehicle headlamp 10, the dual-purpose light source unit 30a described below is disposed in place of the traveling light source unit 12a shown in FIGS. By disposing the dual-purpose light source unit 30a in place of the traveling lamp light source unit 12a, the passing lamp light source unit 13a can be disposed in an area previously occupied by the traveling lamp 12a. The area (area) in which the passing lamp 13 emits light when the lamp is lit can be further expanded, and the glare when the driver or pedestrian of the oncoming vehicle looks directly at the in-vehicle headlamp 10 is further reduced. Is done.

  As shown in FIG. 16, the projection lens 26, the light distribution adjusting unit 29, the light source 31 that irradiates the light distribution area for passing, and the light source 32 that irradiates the light distribution area for traveling are combined. To do.

  Alternatively, as shown in FIG. 17, the combined light source unit 30a includes the projection lens 26, the light distribution adjusting unit 33, the light source 31 that irradiates the passing light distribution area, and the light source 32 that irradiates the traveling light distribution area. And

  A combined light source unit 30a shown in FIG. 16 is obtained by adding a light source 31 for irradiating the light distribution area for passing in FIG. 12 to the traveling light source unit 12a shown in FIG. 14, and the combined light source unit 30a shown in FIG. Is a configuration in which a light source 32 for irradiating the light distribution area for travel shown in FIG. 15 is added to the light source unit 13a for passing lamps shown in FIG.

  Accordingly, the light source 31 for irradiating the light distribution area for passing and the light source 32 for irradiating the light distribution area for traveling, the projection lens 26, the light distribution adjusting section 29 for passing and traveling, and the light distribution adjusting section 33 for passing and traveling. The characteristics of the dual-purpose light source unit 30a configured by the above are substantially the same as those of the above-described passing lamp light source unit 13a and the traveling lamp light source unit 12a, and thus the description thereof is omitted.

  The light incident surface and the light exit surface of the passing / running light distribution adjusting unit 29 and the passing / running light distribution adjusting unit 33 are inclined with respect to the optical axis to refract the passing light. This is because the light source 31 and the light source 32 that are separated from each other appear to be apparently adjacent to each other.

  By tilting the passing / running light distribution adjusting section 29, the boundary between the passing light distribution area and the running light distribution area is not separated vertically, as shown in FIGS. 7A and 7B. Thus, both can be connected in a cut-off line.

  As described above, according to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the low-light source unit 13a is integrally provided with the light source 32 that irradiates the light distribution area for travel. Since the dual light source unit 30a irradiates the light region 16 and the travel light distribution region 17, when the passing lamp is turned on, the area of the passing lamp 13 emitting light can be further increased. The glare that is given to the driver and pedestrian of the oncoming vehicle can be further reduced.

  Moreover, according to the vehicle headlamp 10 according to the first embodiment of the present invention, the dual-purpose light source unit 30a projects the light that irradiates the passing light distribution area and the light that irradiates the traveling light distribution area. Since the projection lens 26 and the light distribution adjusting unit 29 that forms the light distribution pattern for the passing lamp are provided, the light distribution area 16 for the passing and the light distribution area 17 for the traveling can be more accurately irradiated.

  Next, the structure provided with the adjustment member 35 hold | maintained so that the position of the projection lens 26 can be adjusted is demonstrated. 18, 19, and 20 hold the projection lens 26 so as to be adjustable with respect to the light source that uses the light source 31 that irradiates the light distribution region 16 for passing and the light source 32 that irradiates the light distribution region 17 for traveling. The adjusting member 35 is shown.

  In the present embodiment, a light source 31 that irradiates the light distribution area for passing and a donut-shaped adjustment member 35 that holds the position of the projection lens 26 with respect to the light source 32 that irradiates the light distribution area for travel are provided. Yes.

  By fitting the projection lens 26 into a hole provided in the central portion of the adjustment member 35, the direction of the optical axis 36 of the projection lens 26 can be freely adjusted and held. At this time, by providing slits 37 radially from the holes of the adjusting member 35 as shown in FIG. 18, the portions separated by the slits are made flexible, and when the projection lens 26 is fitted, the size of the holes is reduced. The projection lens 26 can be pressed and held by the adjusting member 35 after the fitting is completed. Further, as shown in FIG. 19, the object to be provided with the slit 37 may be the projection lens 26.

  By providing the adjustment member 35 as described above, the optical axis direction of the projection lens 36 provided in the light source unit 13a for the passing lamp, the light source unit 12a for the traveling lamp, and the combined light source unit 30a can be adjusted and held. The light distribution can be adjusted arbitrarily. Note that after adjusting the light distribution, the adjustment member 35 and the projection lens 26 may be bonded so that the position of the projection lens 26 does not shift. FIG. 20 shows a state in which the adjustment member 35 shown in FIG. 18 or FIG. 19 and the projection lens 26 fitted in the adjustment member 35 are fixed to the substrate 24 by the caulking portion 35a.

  FIG. 21 shows a cross section of the low-light source unit 13a having the adjusting member 35. FIG. 22 shows a cross-sectional view of the dual-purpose light source unit 30a having the adjusting member 35. In particular, the light distribution adjustment section 29 of the dual-purpose light source unit 30a shown in FIG. 22 is formed integrally with the adjustment member 35.

  As described above, according to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the low-light light source unit 13a applies the position of the projection lens 26 to the light source 31 that irradiates the low-light distribution area. Therefore, the projection lens 26 can be adjusted in accordance with individual variations of the light source unit 13a for passing lamps, and the irradiation of the desired light distribution region 16 for passing can be easily performed. Can be realized with a simple configuration.

  Thus, according to the vehicle headlamp 10 according to the first embodiment of the present invention, the traveling lamp light source unit 12a determines the position of the projection lens 26 relative to the light source 32 that irradiates the traveling light distribution area. Therefore, the projection lens 26 can be adjusted in accordance with individual variations of the travel light source unit 12a, and the desired travel light distribution area 17 can be easily irradiated. Can be realized with a simple configuration.

  Next, a description will be given of a configuration in which the light source unit 13a for passing lamps, the light source unit 12a for traveling lights, and the dual-purpose light source unit 30a are arranged on the heat radiating member 40 for efficiently radiating heat generated by the light source to the outside. FIG. 23 shows a configuration in which the low-light light source unit 13 a and the dual-purpose light source unit 30 a are attached to the heat radiating member 40 via the substrate 24. The low-light source unit 13a and the dual-purpose light source unit 30a are horizontally aligned, and the B row composed of the dual-use light source unit is sandwiched from above and below by the two A-rows composed of the dual-lamp light source unit 13a. Arranged.

  Further, the low-light source unit 13 a and the dual-purpose light source unit 30 a are both disposed on the substrate 24. As shown in FIG. 23, the light source unit 13a for passing lamps forming the A row and the dual-purpose light source unit 30a forming the B row are attached to the substrate 24 and connected by a wiring 37.

  As the wiring 37, for example, a wiring printed on the substrate 24 is preferably used. In the wiring example shown in FIG. 23, the plurality of low-light source units 13a and the plurality of dual-purpose light source units 30a are connected in series, but FIG. 23 shows an example of the connection. A typical connection example will be described later.

  As described above, by providing the plurality of low-light source units 13a and the plurality of dual-purpose light source units 30a on the same plane, it is possible to use the substrate 24 printed with wiring as conventionally used. Electrical wiring can be performed simply.

  Thus, according to the vehicle headlamp 10 according to the first embodiment of the present invention, the traveling light distribution area is irradiated on the plane or the curved surface on which the light source 31 that irradiates the passing light distribution area is arranged. Since the light source 32 to be arranged is disposed, the electrical wiring of the light source unit 12a for traveling light, the light source unit 13a for passing light, and the combined light source unit 30a can be simply performed.

  Further, the heat generated by the light source unit 13a for the passing lamp, the light source unit 12a for the traveling lamp, and the combined light source unit 30a is conducted to the substrate 24 and then to the heat radiating member 40. Thereafter, the heat conducted by the fins 41 provided behind the heat radiating member 40 is efficiently diffused.

  FIG. 24 shows a view of the heat dissipating member 40 to which the low-light source unit 13a and the dual-purpose light source unit 30a are attached via the substrate 24 as viewed from the direction of the arrow (front) in FIG. FIG. 24A shows a front view including the entire heat radiating member 40, and FIG. 24B is an enlarged view of the light source unit 13a for passing lamps and the combined light source unit 30a for explaining the opening 9 in detail. It is.

  As shown in FIG. 24A, the opening 9 when the traveling lamp light source unit 12a included in the dual-purpose light source unit 30a is lit is the outer periphery of the opening 9 when the passing lamp light source unit 13a is lit. The arrangement is included inside the largest region 20 formed by connecting the parts.

  Next, installation of the heat radiating member 40 including the light source unit 13a for the passing lamp and the combined light source unit 30a in the housing 7 of the vehicle headlamp 10 will be described. FIG. 25 shows an installation example in which the heat dissipation member 40 is installed in the housing 7 of the in-vehicle headlamp 10.

  FIG. 25A shows the housing 7 of the in-vehicle headlamp 10, a through hole 52 through which the heat dissipation member 40 penetrates behind the housing 7, and a support member 51 described later provided around the through hole 52. A plurality of support member penetration portions 57 through which are penetrated. A front surface transmission unit 8 that transmits light emitted from each light source is provided on the front surface of the housing 7.

  FIG. 25B shows an installation example in which the heat radiating member 40 including the light source unit 13a for passing lamps and the combined light source unit 30a is installed in the through hole 52 of the in-vehicle headlamp 10. As shown in FIG. 25 (b), on the front surface of the heat radiating member 40, there are a total of three rows in which the light source units 13a for passing lamps are arranged in the horizontal direction and rows in which the dual-purpose light source units 30a are arranged in the horizontal direction. The uppermost row and the lowermost row are provided with rows of passing light source units 13a, and the middle row is provided with rows of dual-purpose light source units 30a.

  As shown in FIG. 25 (b), a support member penetration portion 57 is provided on the upper and lower walls of the rear portion of the housing 7 that forms the through hole 52, and the support member penetration portion 57 has, for example, a bolt shape. The support member 51 penetrates. Further, one end of the support member 51 located in the housing 7 is fixed to the heat radiating member 40, and the other end of the support member 51 protrudes outside the housing 7.

  The position of the heat radiating member 40 can be adjusted by rotating the support members 51 arranged above and below to adjust the respective lengths, and the irradiation direction of the light source unit 13a for passing lamps and the light source unit 30a for combined use is adjusted. be able to.

  Further, an elastic waterproof member 50 is provided so that there is no gap between the through hole 52 and the heat radiating member 40 even if the installation angle and position of the heat radiating member 40 are changed. Water and dust etc. are prevented from entering.

  Thus, according to the vehicle headlamp 10 according to the first embodiment of the present invention, the heat generated from the light source 31 that irradiates the light distribution area for passing and the light source 32 that irradiates the light distribution area for traveling is generated. Since the heat radiating member 40 that absorbs and releases the housing 7 is provided through the side surface of the housing 7, the heat emitted from the light source 31 and the light source 32 can be efficiently radiated. Furthermore, it is possible to prevent deterioration of the light source 31 that irradiates the light distribution area for passing and the light source 32 that irradiates the light distribution area for traveling, and a stable light amount can be obtained over a long period of time.

  Next, a light source lighting device for lighting the passing light source unit 13a, the traveling light source unit 12a, and the dual light source unit 30a will be described. As an example of a simple circuit, a structure in which a low-light light source unit 13a is connected in series and a structure in which a traveling light source unit 12a is connected in series is shown in parallel.

  FIG. 26 shows a circuit diagram of a configuration in which a low-light source unit 13a connected in series and a low-light source unit 12a connected in series are connected in parallel. As shown in FIG. 26, a row D in which the low-light light source units 13 a are connected in series and a row C in which the running-light light source units 12 a are connected in series are connected to the lighting circuit 53. The lighting circuit 53 is connected to the control unit 54 and allows a predetermined current to flow from the power source 56 such as an in-vehicle battery to the C row and the D row.

  The lighting circuit 53 includes a command to turn on only the D row (a plurality of low-light light source units 13a) and a D row (a plurality of low-light light source units 13a) and a C row (a plurality of light sources for running lights). A command to turn on both the units 12a) (lighting of the driving lamp) is received from the control unit 54, and a lighting operation corresponding to each is performed.

  Further, according to a command from the control unit 54, it is also possible to light darker than the amount of light when the C row is turned on as a traveling light while the D row is turned on as a passing light. The control unit 54 is connected to a vehicle lighting operation device 55.

  Next, a modified example of a circuit for lighting the light source unit 13a for passing lamps, the light source unit 12a for traveling lights, and the combined light source unit 30a will be described. In the circuit diagram shown in FIG. 26, when at least part of at least one of the C row and the D row is not energized due to disconnection or the like, or when individual light source units stop operating, the entire row is turned off. Visibility in the front may be significantly reduced during night driving.

  Therefore, a lighting circuit 53 is provided for each light source unit of the passing light source unit 13a, the traveling light source unit 12a, and the combined light source unit 30a. FIG. 27 shows a case where the lighting circuit 53 is provided in each light source unit of the passing light source unit 13a and the traveling light source unit 12a. The power lighting device 59 includes a plurality of lighting circuits 53 and a control unit 54.

  As described above, according to the in-vehicle headlamp 10 according to the first embodiment of the present invention, the light source 31 that irradiates the light distribution area for passing and the light source 32 that irradiates the light distribution area for traveling are turned on. Since the lighting device 59 is provided, it is possible to prevent other light source units from being turned off at the same time even if wirings connected to some of the light source units are disconnected or a malfunction occurs in some of the light source units. Can do. Furthermore, it is possible to arbitrarily turn on both the light source 31 that irradiates the light distribution area for passing and the light source 32 that irradiates the light distribution area for traveling.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. In the present embodiment, the low-light source unit 13a is configured to include a light source 31 and a light distribution adjusting unit by using a transparent material constituting the projection lens 26. FIG. 28 shows a light source unit 13a for a passing lamp in which a light source 31 that irradiates a light distribution area for passing is included by a transparent material that constitutes a projection lens 26 together with a light blocking type light distribution adjusting unit 27 for passing light. It is.

  As shown in FIG. 28, the light source 31 that irradiates the light distribution area for passing in the transparent material constituting the projection lens 26, the fixing member 23 to which the light source 31 that irradiates the light distribution area for passing is fixed, the light distribution An adjustment unit 27 is included. The light source 31 that irradiates the light distribution area for passing is fixed vertically with the end side arranged on the optical axis 25l.

  As described above, since the projection lens 26, the light source 31 that irradiates the light distribution area for passing, and the light distribution adjusting unit 27 are integrally formed, a more compact light source unit 13a for the passing lamp can be obtained. In addition, since the positions of the light source 31 and the light distribution adjusting unit 27 are always fixed with respect to the projection lens 26, a stable quality light source can be configured.

  Next, a modified example of the light source unit 13a for the passing lamp having a configuration including the light source 31 that irradiates the light distribution area for passing by the transparent material constituting the projection lens 26 and the light distribution adjusting unit will be described.

  FIG. 29 differs from the case shown in FIG. 28 in that the projection material 26 is not provided with a separate light distribution adjustment unit 27, and the shape of the transparent material constituting the projection lens 26 is modified to change the projection. 2 shows a configuration in which a light distribution area for passing which is equivalent to the case where the light distribution adjusting unit 27 is provided inside the lens 26 can be formed.

  As shown in FIG. 29, a portion where a part of a transparent material constituting the projection lens 26 is recessed is referred to as a light distribution adjusting unit 27. Except that the recessed portion becomes the light distribution adjusting unit 27, the same configuration as the light source unit 13a for the passing lamp shown in FIG. 28, including the upper surface 27a of the light distribution adjusting unit 27 and the inclined surface 27b provided on the upper surface. It is.

  FIG. 30 is a side view of the light source unit 13a for the passing lamp in which the projection lens 26 and the light distribution adjusting unit 27 including the concave portion are integrally formed. As shown in FIG. 30, the light distribution adjusting unit 27 is a concave portion provided in a transparent material constituting the projection lens 26, so that it is possible to configure the low light source unit 13a without using a separate structure. .

  As described above, by integrating the projection lens 26, the light source 31 that irradiates the light distribution area for passing, and the light distribution adjusting unit 27, for example, the adjusting member 35 as shown in FIGS. Thus, a compact low-light source unit 13a for passing lamps can be obtained.

  Next, the light source unit 12a for traveling lamps in which the projection lens 26 and the light source 32 are integrated will be described. In FIG. 31, as shown in FIGS. 29 and 30, the light source unit 12a for a traveling lamp configured to be integrated into a transparent material constituting the light source 32 projection lens 26 that irradiates the light distribution region 17 for traveling. Indicates. The light source 32 that irradiates the traveling light distribution area is fixed vertically with the optical axis 25m at the center.

  As described above, by integrating the projection lens 26 and the light source 32 that irradiates the light distribution area for travel, a compact travel light source unit 12a can be obtained.

  The effect obtained by obtaining the above-described compact light source unit will be described. The smaller the light source unit, the greater the number of light source units that can be arranged inside the housing 7 of the in-vehicle headlamp 10. FIG. 32 shows a configuration in which light source units that can be arranged inside the casing 7 of the in-vehicle headlamp 10 are arranged with high density by downsizing the light source unit.

  32 shows a configuration in which a plurality of traveling light source units 12a shown in FIG. 31 are arranged in three rows and a plurality of low-light light source units 13a shown in FIG. Yes. Since the light source unit is thus compact, the light source unit can be installed at a higher density than when the light source unit as shown in FIG. 25 is used. Therefore, light emission spots on the light emitting surface can be reduced, a more uniform surface light source can be configured, and the glare that the passing light gives to the driver and pedestrian of the oncoming vehicle can be further reduced. Can do.

  Moreover, by obtaining a compact light source unit, the light source unit can be arranged on a three-dimensional curved surface. FIG. 33 shows a modification of the configuration in which the light source units that can be arranged inside the housing 7 of the in-vehicle headlamp 10 are arranged with high density by downsizing the light source unit. In FIG. 33, for the sake of clarity, the portion corresponding to the projection lens 26 of the low light source unit 13a is shown in white, and the portion corresponding to the projection lens 26 of the traveling light source unit 12a is shown in black.

  FIG. 33A is a side view of the in-vehicle headlamp 10 having a configuration in which a plurality of light source units 12a for traveling lights and a plurality of light source units 13a for passing lamps are arranged on the same curved surface S1. . FIG. 33B shows the heat dissipating member 40 in which the plurality of traveling light source units 12a and the plurality of low light source units 13a shown in FIG. 33A are installed, as indicated by the arrows in FIG. It is the figure seen from (just above). In FIG. 33B, the housing 7, the front transmission part 8, the elastic waterproof member 50, and the support member 51 are omitted.

  As shown in FIG. 33A, the traveling lamp light source unit 12a and the passing lamp light source unit 13a are arranged on the front surface of the heat radiating member 40 so as to protrude stepwise. In FIG. 33, the same type of light source units are arranged on the same stage of the step-like heat radiation member 40. That is, the heat radiating member 40 has a stage in which a plurality of light source units for traveling lamps 12a are arranged in the horizontal direction and a stage in which a plurality of light source units for passing lamps 13a are arranged in the horizontal direction. As shown in FIG. 36, which will be described later, the traveling lamp light source unit 12a and the passing lamp light source unit 13a may be arranged on the horizontal surface 67 of the plate-like portion of the heat radiating member 40 arranged at substantially equal intervals in the vertical direction. Absent.

  Further, as shown in FIG. 33 (b), the row formed in the horizontal direction in the light source unit 12a for the traveling lamp or the light source unit 13a for the passing lamp has a depth, and in FIG. Assuming that the upper side corresponds to the center side of the vehicle 11 and the lower side corresponds to the side surface side of the vehicle 11, the traveling light source unit 12 a near the center of the vehicle 11 or the low light source unit 13 a travels closer to the side surface of the vehicle 11. It projects forward from the light source unit 12a for lamps or the light source unit 13a for passing lamps.

  As described above, as shown in FIG. 33 (a), the plurality of traveling light source units 12a and the plurality of low light source units 13a are partly on a three-dimensional curved surface as indicated by a broken line S1. Has been placed. In other words, the arrangement of the plurality of traveling lamp light source units 12a and the plurality of passing lamp light source units 13a is not limited to the installation on the plane as shown in FIG. 23, but is arranged on a three-dimensional curved surface. It is possible.

  Next, the light source 31 for irradiating the light distribution area for passing or the light source 32 for irradiating the light distribution area for traveling are modified with the light source unit 13a for passing lamp and the light source unit 12a for traveling lamp formed integrally with the projection lens 26. An example will be described. FIG. 34 shows a light source unit 13a for a passing lamp in which a light source 31 that irradiates a light distribution area for passing and a projection lens 26 are integrated.

  FIG. 34 (a) bends the optical path of the passing light source unit 13a by 90 degrees in the middle by changing the shape of the transparent material constituting the projection lens 26 of the passing light source unit 13a shown in FIG. It is a configuration. That is, the light emitted upward by the light source 31 is reflected by the reflecting surface 66 provided behind the projection lens 26 and guided to the front of the vehicle.

  In addition, the role of the recessed part which formed the reflective surface 27a of the light distribution adjustment part 27 of FIG. 29 is played by the recessed part 64 provided in the rear part of FIG. 34a and FIG. 34b. FIG. 34 (b) is composed of two convex lenses together with the auxiliary projection lens 65 to which the projection lens 26 shown in FIG. 34 (a) is added. A convex lens with a short focal length can be constructed, and a small light source unit can be constructed. Alternatively, it is possible to use a transparent resin having a small refractive index.

  In this configuration, the configuration of the projection lens 26 is the same as that of the above-described light source unit, except that the optical path is bent 90 degrees in the middle.

  In FIG. 34, the reflecting mirror 5 having a surface is provided so as to surround the top, bottom, left and right of the convex portion of the lens 26. By providing the reflecting mirror 5, the light leaked from the projection lens 26 and emitted is emitted forward by the reflecting mirror 5.

  Therefore, when the light source 32 that irradiates the light distribution area for passing light is turned on, the area that appears to emit light, that is, the opening 9 is when the light source unit 13a for the passing lamp shown in FIG. 34 is viewed from the front. This is a portion surrounded by the outer periphery of the reflecting mirror 5. As shown in FIG. 35 (b), if the auxiliary projection lens 65 is provided, the region that appears to emit light, that is, the opening 9 is seen from the front side of the light source unit 13a for the passing lamp shown in FIG. It becomes an opening of the auxiliary projection lens 65 at the time.

  Further, in FIG. 35, by changing the shape of the light source unit 12a for traveling lamps shown in FIG. 31, the light emitted upward from the light source 32 is reflected by the reflecting surface 66 on the way, bent 90 degrees, and forward of the vehicle. The structure leading to is shown. In this configuration, the configuration of the projection lens 26 is the same as that of the above-described light source unit, except that the optical path is bent 90 degrees in the middle. Note that the concept of the opening 9 by including the reflecting mirror 5 that is configured to be flat so as to surround the top, bottom, left, and right of the convex portion of the lens 26 of FIG. 35 is the same as that of FIG.

  Next, a specific arrangement example of the passing lamp light source unit 13a and the traveling lamp light source unit 12a shown in FIGS. 34 and 35 will be described. FIG. 36 shows an installation example in which the low light source unit 13a and the traveling light source unit 12a shown in FIGS. 34 and 35 are arranged on the same surface as in FIG. In FIG. 36, the part corresponding to the projection lens 26 of the low light source unit 13a is shown in white and the part corresponding to the projection lens 26 of the traveling light source unit 12a is shown in black for the sake of clarity.

  FIG. 36A is a side view of the traveling light source unit 12a and the passing light source unit 13a shown in FIGS. 34 and 35 arranged on the same surface. In FIG. 36 (a), the plate-like heat radiating member 40 is installed in the vertical direction at substantially equal intervals, and is configured integrally at the rear. When the horizontal surface of the plate-like heat radiating member is a horizontal surface 67, the traveling light source unit 12 a and the low light source unit 13 a are installed on the horizontal surface 67.

  In FIG. 36, the same type of light source units are arranged on the same stage, and the stage in which the low-light light source units 13a are arranged in the horizontal direction when viewed from the front and the traveling light in the horizontal direction when viewed from the front. The light source units 12a are arranged alternately in the vertical direction.

  FIG. 36B shows the passing lamp light source unit 13a and the traveling lamp light source unit 12a installed in the heat dissipation member 40 shown in FIG. 36A as viewed from the direction of the arrow (front). As shown in FIG. 36 (b), all the light source units 12a for running lights are included inside the maximum region 20 formed by connecting the outer peripheral edge portions of the openings 9 of the light source units 13a for passing lamps.

  In addition, as shown in FIG. 36, when the shape of the reflecting mirror 5 viewed from the front is configured by a polygon such as a quadrangle, the edges of the adjacent reflecting mirrors 5 are in contact with each other and reflected from the front. Compared with the case where the shape of the mirror 5 is circular, the area of the opening 9 can be enlarged.

  According to the in-vehicle headlamp 10 according to the second embodiment of the present invention, the passing lamp light source unit 13a includes the light source 31 that irradiates the passing light distribution area, the projection lens 26, and the light distribution adjusting unit 27. Is formed integrally, the area (area) in which the low light appears to emit light can be further expanded, and the glare that the low light gives to oncoming drivers and pedestrians is further increased. Can be reduced.

  Moreover, according to the vehicle headlamp 10 according to the second embodiment of the present invention, the light source unit 12a for the traveling lamp is formed integrally with the light source that irradiates the traveling light distribution region 17 and the projection lens 26. Therefore, it is possible to disperse and arrange the traveling light source units 12a in the passing lamp 13, and to further expand the area (area) where the passing lamp appears to emit light, The glare that the passing light gives to the driver and pedestrian of the oncoming vehicle can be further reduced.

  Within the scope of the present invention, the present invention can be freely combined with each other, or can be appropriately changed or omitted.

DESCRIPTION OF SYMBOLS 7 Case 9 Opening part 10 Car headlight 12 Traveling light 12a Traveling light source unit 13 Passing light 13a Passing light source unit 16 Passing light distribution area 17 Traveling light distribution area 26 Projection lens 27 Light distribution Adjustment unit 28 Light distribution adjustment unit 29 Light distribution adjustment unit 30a Combined light source unit 31 Light source that irradiates light distribution region for passing 32 Light source that irradiates light distribution region for travel 33 Light distribution adjustment unit for passing and traveling 35 Adjustment member 40 Heat dissipation Member 59 lighting device

Claims (13)

A plurality of low-light source units including a light source that illuminates a low-light distribution area;
A traveling light source unit including a light source that irradiates a traveling light distribution area;
A housing containing the light source unit for the passing light and the light source unit for the traveling light,
Inside the largest area formed by connecting the outer peripheral edge of the opening of the plurality ɽ are differences lamp light source unit, includes opening of all of the running lamp light source unit,
When lighting the front referred are differences lamp light source unit, the in-vehicle headlamp, characterized in that to light at a lower light intensity than the light intensity at the time of lighting the traveling lamp light source unit as the original running lights. The passing light source unit is
A projection lens provided corresponding to each light source that irradiates the light distribution region for passing, and a light distribution region for passing that is provided between the light source that irradiates the light distribution region for passing and the projection lens. The in-vehicle headlamp according to claim 1, further comprising: a light distribution adjusting unit that forms light emitted from a light source that emits light in a light distribution pattern for passing lamps. The passing light source unit is
The in-vehicle headlamp according to claim 2, further comprising an adjustment member that holds the position of the projection lens so that the position of the projection lens can be adjusted with respect to the light source that irradiates the light distribution area for passing. The passing light source unit is
The in-vehicle headlamp according to claim 2 or 3, wherein a light source that irradiates the light distribution area for passing, the projection lens, and the light distribution adjusting unit are integrally formed. . The traveling light source unit is
The in-vehicle headlamp according to claim 1, further comprising a projection lens provided corresponding to each light source that irradiates the light distribution area for travel. The traveling light source unit is
The in-vehicle headlamp according to claim 5, further comprising an adjustment member that holds the position of the projection lens so that the position of the projection lens can be adjusted with respect to a light source that irradiates the light distribution area for travel. The traveling light source unit is
The in-vehicle headlamp according to claim 5 or 6, wherein a light source for irradiating the traveling light distribution area and the projection lens are integrally formed. The passing light source unit is
A light source for irradiating the light distribution area for traveling is integrally provided,
The in-vehicle headlamp according to claim 1, wherein the in-vehicle headlamp is a combined light source unit that irradiates the light distribution area for passing and the light distribution area for traveling. The combined light source unit is
A projection lens that projects light that irradiates the light distribution area for passing and light that irradiates the light distribution area for travel;
The in-vehicle headlamp according to claim 8, further comprising a light distribution adjusting unit that forms the light distribution pattern for the passing lamp.   The light source that irradiates the light distribution area for travel is disposed on a plane or a curved surface on which the light source that irradiates the light distribution area for passing is disposed. In-vehicle headlamp described in 1.   The light source for irradiating the light distribution area for passing and the lighting device for turning on the light source for irradiating the light distribution area for travel are provided. The in-vehicle headlamp described.   A light source that irradiates the light distribution area for passing and a heat radiating member that absorbs heat generated from the light source that irradiates the light distribution area for travel and releases the heat to the outside of the casing are provided through the side surface of the casing. The in-vehicle headlamp according to any one of claims 1 to 11, wherein the headlamp is mounted.   The in-vehicle use according to any one of claims 1 to 12, wherein the light source that irradiates the light distribution area for passing and the light source that irradiates the light distribution area for travel are semiconductor light sources. Headlight.

Images