Vehicle lighting

Abstract

In a vehicle lamp having a plurality of reflectors, glare caused by irradiation of light onto a reflective object such as a billboard located on the side of a lane is reduced. A vehicle lamp is disclosed, comprising: a plurality of reflectors including a first reflector; and a plurality of light sources provided on the plurality of reflectors in a form in which at least one light source is provided on each of the plurality of reflectors, the plurality of light sources comprising two or more first light sources provided on the first reflector, a light distribution pattern of light emitted from the plurality of light sources via the plurality of reflectors comprising a first pattern whose width in the vertical direction becomes narrower as it goes toward the outer side of the vehicle, one of the two or more first light sources is arranged at a focal point of the first reflector, and another of the two or more first light sources is arranged closer to the inner side of the vehicle than the focal point of the first reflector.

Description

Technical Field

[0001] The invention relates to a vehicle lamp. Background Art

[0002] The following vehicle lamp is publicly known, namely, a light source composed of multiple semiconductor light-emitting elements that can be individually lit and extinguished, and a reflector having a reflecting surface based on a rotating parabola, the reflector is composed of multiple partial reflectors divided in the vertical direction, and the reflecting surface of each partial reflector is constructed in a manner that the horizontal expansion of the reflected light reflected by each partial reflector on a predetermined projection surface is approximately equal (for example, refer to patent document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: International Publication No. 2016 / 024489 Pamphlet Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in the above-described conventional technology, since the light in the upper portion of the light distribution pattern outside the vehicle is relatively strong, the light may be irradiated onto a reflective object such as a billboard located on the side of the lane, causing glare to the driver.

[0008] Therefore, in one aspect, an object of the present invention is to reduce glare caused by light irradiating a reflective object such as a billboard located on the side of a roadway in a vehicle lamp having a plurality of reflectors.

[0009] Solutions to Solve Problems

[0010] In one embodiment, a vehicle lamp is provided, comprising:

[0011] a plurality of reflectors including a first reflector; and

[0012] a plurality of light sources, which are provided on the plurality of reflectors in a form in which at least one light source is provided on each of the plurality of reflectors;

[0013] The plurality of light sources include two or more first light sources disposed on the first reflector.

[0014] The light distribution pattern of the light emitted from the plurality of light sources via the plurality of reflectors includes a first pattern whose width in the vertical direction becomes narrower toward the outer side of the vehicle.

[0015] One of the two or more first light sources is arranged at the focus of the first reflector.

[0016] The other of the two or more first light sources is arranged on the vehicle inner side relative to the focal point of the first reflector.

[0017] Effects of the Invention

[0018] In one aspect, according to the present invention, in a vehicle lamp including a plurality of reflectors, glare caused by light irradiating a reflective object such as a billboard located on the side of a roadway can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a plan view of a vehicle equipped with the vehicle lamp according to the present embodiment.

[0020] Figure 2 This is a front view for explaining a reflector assembly of a lamp unit according to an embodiment.

[0021] Figure 3 It is a plan view showing the relationship between the reflector and the light source of the lamp unit.

[0022] Figure 4 This is a system diagram schematically showing a control system of a light source of a lamp unit.

[0023] Figure 5 It is an explanatory diagram of an example of a light distribution pattern of a lamp unit.

[0024] Figure 6 It is an explanatory diagram of another example of the light distribution pattern of the lamp unit.

[0025] Figure 7 It is a diagram showing a light distribution pattern realized by the second reflector 21 and the second light source 31 .

[0026] Figure 8 It is a diagram showing a light distribution pattern realized by the first reflector 22 and the first light source 32 .

[0027] Fig. 9 It is a diagram showing a light distribution pattern realized by the first reflector 22 and the first light source 33 .

[0028] Fig.10 It is a diagram showing a light distribution pattern realized by the third reflector 23 and the third light source 34 .

[0029] Fig.11 It is a diagram showing a light distribution pattern realized by the third reflector 23 and the third light source 35 .

[0030] Fig.12 It is a diagram showing a light distribution pattern realized by the fourth reflector 24 and the fourth light source 36 .

[0031] Fig.13AIt is an explanatory diagram showing an example of a light distribution pattern realized by the first reflector 22 and the first light sources 32 and 33 .

[0032] Fig. 13B This is an explanatory diagram of another example of the light distribution pattern realized by the first reflector 22 and the first light sources 32 and 33 .

[0033] Fig.14A This is an explanatory diagram of an example of a light distribution pattern realized by the third reflector 23 and the third light sources 34 and 35 .

[0034] Fig. 14B This is an explanatory diagram of another example of the light distribution pattern realized by the third reflector 23 and the third light sources 34 and 35 .

[0035] Fig.15A It is a diagram showing a light distribution pattern when all light sources are turned on.

[0036] Fig. 15B It is a diagram showing a light distribution pattern when a part of light sources are turned on.

[0037] Fig. 15C It is a diagram showing a light distribution pattern when another part of the light sources is turned on.

[0038] Fig.15D It is a diagram showing a light distribution pattern when another part of the light sources is turned on.

[0039] Fig.15E It is a diagram showing a light distribution pattern when another part of the light sources is turned on.

[0040] Fig.16 It is a plan view showing the relationship between a reflector and a light source of a lamp unit according to the second embodiment.

[0041] Fig.17 It is a plan view showing the relationship between a reflector and a light source of a lamp unit which is a modified example of the second embodiment. DETAILED DESCRIPTION

[0042] Hereinafter, each embodiment will be described in detail with reference to the attached drawings. In addition, in the attached drawings, for ease of observation, in the case where there are multiple parts of the same attribute, there are cases where reference symbols are marked only for a part. Hereinafter, unless otherwise specified, "front" and "rear" respectively represent the "forward direction" and "reverse direction" of the vehicle, and "up", "down", "left" and "right" respectively represent the directions observed from the driver riding in the vehicle. In addition, "up" and "down" are "up" and "down" in the vertical direction, and "left" and "right" are "left" and "right" in the horizontal direction. In addition, the outside of the vehicle refers to the outside of the left-right direction of the vehicle relative to the front and rear axles of the vehicle passing through the center of the left-right direction of the vehicle, and the inside of the vehicle refers to the side close to the front and rear axles in the left-right direction of the vehicle.

[0043] [First embodiment]

[0044] Figure 1 It is a plan view of a vehicle 102 provided with the vehicle lamp (vehicle headlamp) according to the present embodiment as the first embodiment.

[0045] like Figure 1 As shown, the vehicle lamp of the present embodiment is a vehicle headlamp (101L, 101R) provided on the left and right sides of the front side of a vehicle 102, and is hereinafter simply referred to as a vehicle lamp.

[0046] The vehicle lamp of this embodiment includes a housing (not shown) opened at the front side of the vehicle and an outer lens (not shown) mounted on the housing to cover the opening. A lamp unit 1 is arranged in a lamp chamber formed by the housing and the outer lens (see Figure 2 )wait.

[0047] Below, refer to Figure 2 In the following drawings, the lamp unit 1 of the right headlamp 101R is described, but unless otherwise specified, the lamp unit 1 of the left headlamp 101L may be the same. For example, the lamp unit 1 of the left headlamp 101L has a bilaterally symmetrical structure with respect to the lamp unit 1 of the right headlamp 101R.

[0048] Figure 2 It is a front view for explaining the reflector assembly 20 of the lamp unit 1 according to one embodiment.

[0049] The lamp unit 1 is for ADB (Adaptive Driving Beam) or high beam, and includes a reflector assembly 20. The reflector assembly 20 includes four reflectors 21 to 24 arranged in the vehicle width direction.

[0050] The first reflector 22 is located on the vehicle outer side than the second reflector 21. The second reflector 21 is located on the vehicle inner side most among the four reflectors 21 to 24, and the third reflector 23 is located on the vehicle outer side than the first reflector 22. The fourth reflector 24 is located on the vehicle outer side than the third reflector 23 and is located on the vehicle outer side most among the four reflectors 21 to 24.

[0051] The first reflector 22 is located further to the rear of the vehicle than the second reflector 21. The second reflector 21 is located closest to the front of the vehicle among the four reflectors 21 to 24, and the third reflector 23 is located further to the rear of the vehicle than the first reflector 22. The fourth reflector 24 is located further to the rear of the vehicle than the third reflector 23 and is located closest to the rear of the vehicle among the four reflectors 21 to 24.

[0052] Figure 3 It is a plan view showing the relationship between the reflectors 21 to 24 and the light sources 31 to 36 of the lamp unit 1 . Figure 3 Schematically showing the outer shapes of the reflectors 21 to 24 , and the focal points of the reflectors 21 to 24 are shown by the intersection points O of the cross lines.

[0053] The reflectors 21 to 24 are provided with light sources 31 to 36. The light sources 31 to 36 are formed of LEDs (Light Emitting Diodes). The reflectors 21 to 24 form a light distribution area for traveling in front of the vehicle based on the light from the light sources 31 to 36.

[0054] The first light sources 32 and 33 are provided at the first reflector 22. The first light sources 32 and 33 are arranged side by side on the left and right, and the first light source 32 is arranged on the inner side of the vehicle than the first light source 33. The first light source 33 is arranged at the focus of the first reflector 22. In addition, "arranging the first light source 33 at the focus of the first reflector 22" is a concept that includes a form in which the sheet of the first light source 33 is located at the focus of the first reflector 22 in addition to the form in which the center position of the first light source 33 (the center of the sheet) coincides with the focus of the first reflector 22. This is substantially the same for the relationship between the light source and the reflector other than the first light source 33 and the first reflector 22.

[0055] The third light sources 34 and 35 are provided on the third reflector 23. The third light sources 34 and 35 are arranged side by side, and the third light source 34 is arranged on the vehicle inner side than the third light source 35. The third light source 35 is arranged at the focal point of the third reflector 23.

[0056] The second light source 31 is in the form of a sheet in which two LED elements are integrally mounted, and is provided on the second reflector 21. Figure 3As shown, the second light source 31 is arranged at the focus of the second reflector 21 in a form where the light-emitting sheets are adjacent to each other. In addition, "arranging the second light source 31 at the focus of the second reflector 21" is a concept that includes a form in which the sheet of the second light source 31 is located at the focus of the second reflector 21 in addition to a form in which the center position of the second light source 31 (the center between the two LED elements, that is, the center of the sheet of the second light source 31) coincides with the focus of the second reflector 21.

[0057] The fourth light source 36 is provided on the fourth reflector 24 . The fourth light source 36 is arranged at the focal point of the fourth reflector 24 .

[0058] Figure 4 1 is a system diagram schematically showing a control system 40 for the light sources 31 to 36 of the lamp unit 1 .

[0059] The control system 40 can control the light sources 31 to 36 individually and is electrically connected to the light sources 31 to 36. Figure 4 In the embodiment, the control system 40 includes a microcomputer 400 ( Figure 4 The microcomputer 400 and the drive circuits 401 to 406 may be embodied as, for example, an ECU (Electronic Control Unit).

[0060] The driving circuit 401 drives the second light source 31 according to the instruction from the microcomputer 400. The driving circuit 402 drives the first light source 32 according to the instruction from the microcomputer 400. Similarly, the driving circuits 403 to 406 drive the light sources 33 to 36 respectively according to the instruction from the microcomputer 400. In addition, the driving method is pulse driving, and the light sources 31 to 36 are individually controlled in a form in which the duty ratio of the pulse driving is variable, for example.

[0061] The microcomputer 400 realizes variable light distribution control such as ADB, for example. The microcomputer 400 controls the light sources 31 to 36 based on the captured image from the front camera 50 that captures the front of the vehicle so as to realize a light distribution pattern that does not cause glare to the driver of the oncoming vehicle, etc. In this case, the variable light distribution control can be realized without using a mechanical movable part.

[0062] In this embodiment, since four reflectors 21 to 24 are provided, various light distribution patterns can be realized. For example, by changing the reflectors used in the four reflectors 21 to 24 (i.e., the light sources to be turned on among the light sources 31 to 36), various light distribution patterns can be realized (see the following description). Figures 15A to 15E). In addition, in the present embodiment, the brightness (light beam) of the light sources 31 to 36 can be changed by making the duty ratio of the driving current variable, so various light distribution patterns can be realized by individually controlling the brightness of the light sources 31 to 36.

[0063] In the present embodiment, the first reflectors 22 and 23 are provided with two light sources in one reflector (for example, the first reflector 22 is provided with the first light sources 32 and 33 ), and various light distribution patterns can be realized by changing the light sources used.

[0064] Next, refer to Figure 5 The following drawings describe the light distribution pattern of the lamp unit 1 of the right headlamp 101R.

[0065] Figure 5 as well as Figure 6 Schematically shows the distribution of illuminance (cross-sectional illuminance) on a plane (screen) perpendicular to the optical axis of the lamp unit 1 in front of the vehicle as a light distribution pattern of the lamp unit 1. Figure 5 as well as Figure 6 (The same also applies to the following figures) In the figure, line V represents the vertical reference line (V-V line) on the screen, and line H represents the horizontal reference line (H-H line) on the screen. Figure 5 as well as Figure 6 , the illuminance contour lines L1 to L8 are shown. The illuminance is in the relationship of L1>L2>L3>L4>L5>L6>L7>L8, and the area surrounded by the contour line L1 is the so-called "hot zone". For example, the contour line L8 is a line of 625 [cd], and the contour line L1 is a line of 50000 [cd]. In addition, the following description of the light distribution pattern is the same as the above. Figure 5 as well as Figure 6 Description of the pattern of cross-sectional illumination performance shown.

[0066] Figure 5 This is a light distribution pattern when the light sources 31 to 36 are driven at the following duty ratios.

[0067] The first light source 32 has a duty cycle of 60%

[0068] The first light source 33 has a duty cycle of 80%

[0069] The third light source 34 has a duty cycle of 60%.

[0070] The third light source 35 has a duty cycle of 80%

[0071] The duty cycle of the second light source 31 is 100%

[0072] The fourth light source 36 has a duty cycle of 60%

[0073] Figure 6 This is a light distribution pattern when the light sources 31 to 36 are driven at the following duty ratios.

[0074] The first light source 32 has a duty cycle of 80%

[0075] The first light source 33 has a duty cycle of 80%

[0076] The third light source 34 has a duty cycle of 80%.

[0077] The third light source 35 has a duty cycle of 80%

[0078] The duty cycle of the second light source 31 is 100%

[0079] The fourth light source 36 has a duty cycle of 80%.

[0080] Figure 5 as well as Figure 6 The light distribution pattern shown is realized, for example, in a state where an oncoming vehicle is not detected, and is hereinafter referred to as a "normal pattern".

[0081] In this embodiment, if Figure 5 as well as Figure 6 As shown in FIG. 1 , a normal pattern is a pattern in which the width in the vertical direction becomes narrower toward the outer side of the vehicle. Hereinafter, such a light distribution pattern is also referred to as a "light distribution pattern in which the vertical width decreases toward the outer side of the vehicle".

[0082] However, in the conventional pattern described in Patent Document 1, as described above, since the light is relatively strong in the upper portion outside the vehicle, the light may be irradiated onto a reflective object such as a billboard located on the side of the lane, causing glare to the driver.

[0083] In this regard, according to this embodiment, Figure 5 as well as Figure 6 As shown in the middle Q1 part, the light in the upper part of the vehicle outer side is relatively weak (because it is further outward than the contour line L8), so it is possible to reduce the adverse condition (glare to the driver) caused by the light irradiating to the reflective object such as the billboard located on the side of the lane. In particular, billboards close to the vehicle are likely to be located in the Q1 part, and according to this embodiment, the glare caused by the reflected light from such billboards can be effectively reduced.

[0084] In addition, according to this embodiment, Figure 5 as well as Figure 6 As shown, the intersection of line V and line H forms a region with the highest illumination (a "hot zone" as a light collecting portion), and a light distribution pattern whose upper and lower widths decrease toward the outer side of the vehicle can be realized.

[0085] In addition, Figure 5 Compared to the usual pattern shown, Figure 6The area with the highest illumination (“hot spot”) of the general pattern shown has a tendency to move toward the outside of the vehicle (i.e., to expand outward from line V or to move away from line V). Therefore, at this point, Figure 5 The usual pattern shown is Figure 6 The general pattern shown is more advantageous. Figure 5 The normal pattern shown in FIG. 1 is more convenient than the conventional pattern in terms of power consumption because the duty cycle when driving the first light source 32 is small. Figure 6 The general pattern shown is more advantageous.

[0086] Thus, in this embodiment, it is preferred that the first light source 32 is controlled to emit a light beam lower than the light beam of the first light source 33, and the third light source 34 is controlled to emit a light beam lower than the light beam of the third light source 35 or a light beam equal to that of the first light source 32. Figure 5 In the embodiment, the first light source 33 is driven at a duty cycle of 80% and the first light source 32 is driven at a duty cycle of 60%, so that the light beam of the first light source 32 is lower than the light beam of the first light source 33, but the present invention is not limited thereto. For example, the first light source 33 may be driven at a duty cycle of 90% and the first light source 32 may be driven at a duty cycle of 70%, and the specific value of the duty cycle is an appropriate value. The same is true for the relationship between the third light source 34 and the third light source 35.

[0087] In addition, the method of making the light beam of the first light source 32 lower than the light beam of the first light source 33 may be a method other than the method of setting a difference in duty ratio. For example, a difference in rated output itself may be set between the first light source 32 and the first light source 33. This also applies to the relationship between the third light source 34 and the third light source 35.

[0088] Below, refer to Figure 7 The following drawings will be used to implement Figure 5 Individual light distribution patterns of the light distribution patterns shown will be described.

[0089] Figure 7 is a diagram showing a light distribution pattern realized by the second reflector 21 and the second light source 31. Figure 8 is a diagram showing a light distribution pattern realized by the first reflector 22 and the first light source 32. Fig. 9 is a diagram showing a light distribution pattern realized by the first reflector 22 and the first light source 33. Fig.10 is a diagram showing a light distribution pattern realized by the third reflector 23 and the third light source 34. Fig.11 is a diagram showing a light distribution pattern realized by the third reflector 23 and the third light source 35. Fig.12 2 is a diagram showing a light distribution pattern realized by the fourth reflector 24 and the fourth light source 36. The lines V, H, and contour lines L1 to L8 are also as described above.

[0090] like Figure 7 As shown, the light distribution pattern realized by the second reflector 21 and the second light source 31 forms a light collecting portion of the contour line L1 at the intersection of the line V and the line H. Thus, the second reflector 21 and the second light source 31 can effectively form a region (“hot zone”) with the highest illumination at the intersection of the line V and the line H in a normal pattern.

[0091] like Figure 8 as well as Fig. 9 As shown, the light distribution pattern realized by the first reflector 22 and the first light source 32 is different from the light distribution pattern realized by the first reflector 22 and the first light source 33, and there is no light collecting portion of the contour line L3. In addition, compared with the light distribution pattern realized by the first reflector 22 and the first light source 33, the light distribution pattern realized by the first reflector 22 and the first light source 32 is a form that covers the outer side of the vehicle.

[0092] More specifically, as described above, the first light source 33 is disposed at the focus of the first reflector 22, so that the light collecting portion of the contour line L3 can be effectively formed. The light collecting portion of the contour line L3 caused by the first light source 33 is from the outside of the vehicle to the outside of the vehicle. Figure 7 The light collecting parts of the contour line L1 in the light distribution pattern realized by the second reflector 21 and the second light source 31 are adjacent to each other. Figure 5 "Hot spots" in the general pattern shown.

[0093] In addition, if Fig. 9 As shown, the light distribution pattern achieved by the first reflector 22 and the first light source 33 is different from the light distribution pattern achieved by the second reflector 21 and the second light source 31 (see Figure 7 ) is different, and there is no light collecting portion of the contour line L1. This is because the second light source 31 is composed of two LED sheets, and the light beam of the first light source 33 composed of one LED sheet is lower than the light beam of the second light source 31.

[0094] As described above, the first light source 32 is disposed on the vehicle inner side than the first light source 33. That is, the first light source 32 is intentionally disposed on the vehicle inner side than the focal point of the first reflector 22. Thus, light can be effectively diffused toward the vehicle outer side.

[0095] In addition, if Figure 8 As shown, the light distribution pattern realized by the first reflector 22 and the first light source 32 is in a state where the width in the vertical direction becomes narrower toward the vehicle outer side. Thus, a light distribution pattern whose vertical width decreases toward the vehicle outer side can be effectively realized.

[0096] like Fig.10 as well as Fig.11As shown, the light collecting portion of the contour line L4 of the light distribution pattern realized by the third reflector 23 and the third light source 35 is located outside the vehicle, compared with the light distribution pattern realized by the third reflector 23 and the third light source 35. That is, compared with the light distribution pattern realized by the third reflector 23 and the third light source 35, the light distribution pattern realized by the third reflector 23 and the third light source 34 is a form that covers the outside of the vehicle.

[0097] More specifically, as described above, the third light source 35 is disposed at the focus of the third reflector 23, so that the light collecting portion of the contour line L4 can be effectively formed. The light collecting portion of the contour line L4 caused by the third light source 35 is from the outside of the vehicle to the outside of the vehicle. Fig. 9 The light collecting parts of the contour lines L3 in the light distribution pattern realized by the first reflector 22 and the first light source 33 are adjacent to each other.

[0098] In addition, if Fig.11 As shown, the light distribution pattern achieved by the third reflector 23 and the third light source 35 is different from the light distribution pattern achieved by the first reflector 22 and the first light source 33 (see Fig. 9 ) is different, and there is no light collecting part of the contour line L3. As a result, it is possible to suppress the area with the highest illumination from extending relatively far to the outside of the vehicle.

[0099] As described above, the third light source 34 is disposed on the vehicle inner side than the third light source 35. That is, the third light source 34 is intentionally disposed on the vehicle inner side than the focal point of the third reflector 23. This allows efficient diffusion of light to the vehicle outer side.

[0100] In addition, if Fig.10 As shown, the light distribution pattern realized by the third reflector 23 and the third light source 34 is in a state where the width in the vertical direction becomes narrower toward the vehicle outer side. Thus, a light distribution pattern whose vertical width decreases toward the vehicle outer side can be effectively realized.

[0101] like Fig.12 As shown, the light distribution pattern achieved by the fourth reflector 24 and the fourth light source 36 is different from the light distribution pattern achieved by the third reflector 23 and the third light source 34 (see Fig.10 ) is different, and there is no light collecting portion of the contour line L4. Thus, while the normal pattern is extended to the outside of the vehicle, it is possible to suppress the area with the highest illumination from extending relatively far to the outside of the vehicle.

[0102] Fig.13A as well as Fig. 13B 2 is a diagram showing a light distribution pattern realized by the first reflector 22 and the first light sources 32 and 33. Fig.14A as well as Fig. 14B It is a diagram showing a light distribution pattern realized by the third reflector 23 and the third light sources 34 and 35 . Fig.13AIt means that when the duty cycle of the first light source 32 is 60% and the duty cycle of the first light source 33 is 80%, Fig. 13B It means that the duty cycle of the first light source 32 is 80% and the duty cycle of the first light source 33 is 80%. Similarly, Fig.14A When the duty cycle of the third light source 34 is 60% and the duty cycle of the third light source 35 is 80%, Fig. 14B It indicates that the duty ratio of the third light source 34 is 80% and the duty ratio of the third light source 35 is 80%.

[0103] If Fig.13A as well as Fig. 13B By comparison, it can be seen that by making the light beam of the first light source 32 lower than the light beam of the first light source 33, it is possible to suppress the expansion of the light collecting portion of the contour line L2 toward the outside of the vehicle. Fig.14A as well as Fig. 14B By comparison, it can be seen that by making the light beam of the third light source 34 lower than the light beam of the third light source 35, the expansion of the light collecting portion of the contour line L3 to the outside of the vehicle can be suppressed. Figure 5 The usual pattern shown is Figure 6 The difference from the usual pattern shown.

[0104] Below, refer to Figures 15A to 15E , several of the various light distribution patterns that can be realized by the lamp unit 1 are described.

[0105] Fig.15A and Figure 5 The normal pattern shown corresponds to a light distribution pattern showing a case where all the light sources 31 to 36 are turned on. Fig. 15B The light distribution pattern shows a state where the light sources 32 to 36 are turned on. Fig. 15C The light distribution pattern shows the state where the light sources 32 and 34 to 36 are turned on. Fig.15D The light distribution pattern shows the state where the light sources 34 to 36 are turned on. Fig.15E The light distribution pattern shows the state where the light sources 34 and 36 are turned on.

[0106] In this way, by changing the reflector used among the four reflectors 21 to 24 (that is, the light source to be turned on among the light sources 31 to 36 ), various light distribution patterns can be realized.

[0107] [Second embodiment]

[0108] Fig.16 It is a plan view showing the relationship between reflectors 21 to 24 and 62 and light sources 31 to 36 and 64 of a lamp unit 1A according to the second embodiment. Fig.16 (shown later Fig.17 Same as above Figure 3Similarly, the outer shapes of the reflectors 21 to 24 and 62 are schematically shown, and the focal points of the reflectors 21 to 24 and 64 are shown by the intersection points O of the cross lines.

[0109] The lamp unit 1A further includes an oncoming lamp unit 60 that forms a light distribution area for oncoming vehicles, independently of the reflectors 21 to 24 and the light sources 31 to 36 of the first embodiment described above.

[0110] The oncoming lamp unit 60 is adjacent to the second reflector 21 in the vehicle width direction. Fig.16 In the embodiment, the oncoming lamp unit 60 is disposed on the inner side of the vehicle than the second reflector 21. The oncoming lamp unit 60 includes a reflector 62 and a light source 64. For example, the light source 64 is disposed at the focus of the reflector 62.

[0111] Fig.17 It is a plan view showing the relationship between reflectors 21 to 24 , 621B, 622B and light sources 31 to 36 , 641B, 642B of a lamp unit 1B which is a modified example of the second embodiment.

[0112] The lamp unit 1B further includes a lamp unit 60B for oncoming vehicles that forms a light distribution area for oncoming vehicles, independently of the reflectors 21 to 24 and the light sources 31 to 36 of the first embodiment. Fig.17 , the arrangement of the reflectors 21 to 24 and the light sources 31 to 36 of the first embodiment described above is different. Specifically, the second reflector 21 and the second light source 31 are arranged on the vehicle outer side than the fourth reflector 24 and the fourth light source 36 .

[0113] The oncoming lamp unit 60B is adjacent to the second reflector 21 in the vehicle width direction. Fig.17 In the embodiment, the oncoming lamp unit 60B is disposed on the outer side of the vehicle than the second reflector 21. The oncoming lamp unit 60B includes reflectors 621B, 622B and light sources 641B, 642B. For example, the light sources 641B, 642B are disposed at the focal points of the reflectors 621B, 622B.

[0114] Thus, the reflectors 21 to 24 and the light sources 31 to 36 of the lamp unit 1 of the first embodiment can also be combined with the oncoming lamp unit in various forms. By placing the second reflector 21 adjacent to the oncoming lamp units 60 and 60B, the light distribution pattern for oncoming can be aligned with the light distribution pattern for oncoming. Figure 7 The light distribution patterns on the center side shown are combined and distributed with high positional accuracy.

[0115] Although each embodiment has been described in detail above, the present invention is not limited to a specific embodiment, and various modifications and changes can be made within the scope of the technical claims. In addition, all or a plurality of components of the above-mentioned embodiments can also be combined.

[0116] For example, in the above-mentioned embodiment, four reflectors 21 to 24 are provided, but the number of reflectors is arbitrary as long as it is two or more. For example, the fourth reflector 24 (and the fourth light source 36 associated therewith) among the four reflectors 21 to 24 may be omitted. Alternatively or in addition thereto, the third reflector 23 (and the third light sources 34 and 35 associated therewith) may also be omitted. In addition, the arrangement of the four reflectors 21 to 24 is not limited to Figure 3 The configuration shown can also be changed appropriately (see Fig.17 ).

[0117] In the above-described embodiment, the third reflector 23 is provided with two third light sources 34 and 35 , but three or more light sources may be provided. The same applies to the first reflector 22 .

[0118] In the above-mentioned embodiment, only the fourth light source 36 is provided on the fourth reflector 24, but more light sources may be provided. In this case, more light sources may be provided on the vehicle inner side than the fourth light source 36. In addition, only the second light source 31 is provided on the second reflector 21, but more light sources may be provided.

[0119] Explanation of symbols

[0120] 1—lamp unit, 20—reflector assembly, 21—second reflector, 22—first reflector, 23—third reflector, 24—fourth reflector, 31—second light source, 32—first light source, 33—first light source, 34—third light source, 35—third light source, 36—fourth light source, 40—control system, 50—front camera, 101L—headlight, 101R—headlight, 102—vehicle, 400—microcomputer, 401—drive circuit, 402—drive circuit, 403—drive circuit, 404—drive circuit, 405—drive circuit, 406—drive circuit.

Claims

1. A vehicle lamp, characterized in that: have: a plurality of reflectors including a first reflector; and a plurality of light sources, which are provided on the plurality of reflectors in a form in which at least one light source is provided on each of the plurality of reflectors, and are used to form a light distribution pattern including a first pattern, The plurality of light sources include two or more first light sources disposed on the first reflector. One of the two or more first light sources is arranged at the focus of the first reflector. Another one of the two or more first light sources is arranged on the inner side of the vehicle than the focal point of the first reflector. The structure is such that when the above-mentioned first pattern is formed, the above-mentioned one of the above-mentioned two or more first light sources and the above-mentioned other one emit light, and the above-mentioned other one emits a light beam lower than the light beam of the above-mentioned one in such a manner that the width of the above-mentioned first pattern in the vertical direction becomes narrower toward the outside of the vehicle.

2. The vehicle lamp according to claim 1, characterized in that: The plurality of reflectors further include a second reflector that forms a light distribution pattern closer to the center than the first reflector. The plurality of light sources include two second light sources disposed on the second reflector. The two second light sources are arranged adjacent to each other at the focal point of the second reflector.

3. The vehicle lamp according to claim 2, characterized in that: The plurality of reflectors further include a third reflector that irradiates light toward an outermost region of the plurality of reflectors. The plurality of light sources include a third light source disposed on the third reflector. The one third light source emits light having a light beam lower than or equal to a light beam of the one of the two or more first light sources.

4. The vehicle lamp according to claim 1, characterized in that: The plurality of reflectors form a light distribution area for driving.

5. The vehicle lamp according to claim 2, characterized in that: Independently of the plurality of reflectors and the plurality of light sources, a lamp unit for oncoming vehicles is further provided, and the lamp unit for oncoming vehicles forms a light distribution area for oncoming vehicles.

6. The vehicle lamp according to claim 5, characterized in that: The second reflector is disposed adjacent to the oncoming vehicle lamp unit.

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