JP6114985B2 - Vehicle headlamp - Google Patents

Description

  The present invention relates to a vehicle headlamp.

  In recent years, vehicle headlamps using LEDs have been proposed (for example, Patent Document 1).

  As shown in FIG. 11, the vehicle headlamp 80 disclosed in Patent Document 1 includes a plurality of (16 in FIG. 11A) first LED light sources 81 and a plurality (FIG. 11A). Then, eight) second LED light sources 82 are provided. The vehicle headlamp 80 includes an attachment member 83 to which two types of LED light sources 81 and 82 are attached to the front surface.

  As shown in FIG. 11B, the first LED light source 81 includes a light emitting diode 84, a mounting board 85, a lens 86, a holder 87, and the like. The light emitting diode 84 is a white LED for illumination that emits white light. The second LED light source 82 includes a light emitting diode 88, a mounting substrate 89, a lens 90, a holder 91, and the like. The light emitting diode 88 is a white LED for illumination that emits white light.

  As shown in FIG. 11B, the attachment member 83 includes a first attachment plate 92 to which the first LED light source 81 is attached, a second attachment plate 93 to which the second LED light source 82 is attached, and a second attachment plate 93. It is composed of a pair of fixing plates 94 and 94 for fixing to one mounting plate 92. In FIG. 11B, one of the pair of fixing plates 94, 94 is visible.

  The second attachment plate 93 is attached to the first attachment plate 92 in a state where it is inclined downward with respect to the normal direction of the front surface of the first attachment plate 92 (leftward in FIG. 11B).

  A cylindrical cover 95 made of a synthetic resin molding having translucency is attached to the front surface side of the attachment member 83.

  A plurality of (24 in FIG. 11A) window holes 96 through which the front end portions of the first LED light source 81 and the second LED light source 82 are inserted are opened on the front surface of the cover 95.

  Patent Document 1 describes that the above-described vehicle headlamp 80 is a railcar headlamp (sign lamp). Further, Patent Document 1 describes that when other railway vehicles are not running facing each other, only the first LED light source 81 is turned on and light is emitted to a long distance. Further, Patent Document 1 describes that when another railway vehicle is running facing each other, only the second LED light source 82 is turned on to emit light only at a short distance.

JP 2012-238484 A

  By the way, in the vehicle headlamp 80 described above, the second mounting plate 93 is mounted on the first mounting plate 92 in a state of being inclined downward with respect to the normal direction of the front surface of the first mounting plate 92. It becomes possible to tilt the irradiation direction of the 2LED light source 82 downward with respect to the irradiation direction of the first LED light source 81. Thereby, in the railway vehicle using the above-described vehicle headlamp 80, when other railway vehicles are running facing each other, only the second LED light source 82 is turned on and light is irradiated at a short distance. It becomes possible to make it difficult for drivers of other railway vehicles traveling oppositely to feel dazzling.

  However, in the vehicle headlamp 80 described above, a plurality of second LED light sources 82 are arranged at the center of the attachment member 83, and the plurality of first LED light sources 81 surround the plurality of second LED light sources 82. It is arranged on the peripheral portion of the attachment member 83. Therefore, in the above-described vehicle headlamp 80, when irradiating light up to a long distance, the plurality of first LED light sources 81 are turned on, so it is difficult to increase the illuminance in the irradiation area.

  This invention is made | formed in view of the said reason, The objective is to provide the vehicle headlamp which can raise the illumination intensity in an irradiation area.

The vehicle headlamp according to the present invention includes a plurality of first LED light sources, a first attachment member having the first LED light sources attached to the front surface, a plurality of second LED light sources, and the second LED light sources attached to the front surface. The second mounting member, the fixing member for fixing the first mounting member and the second mounting member, and the inclination angle of the irradiation direction of each first LED light source with respect to the irradiation direction of each second LED light source can be adjusted. An adjustment mechanism configured , wherein the first attachment member and the second attachment member are arranged side by side with the fixing member, and the adjustment mechanism is formed on the fixing member and the screw, An adjustment portion that is an arcuate insertion hole that is inserted, and a fixing screw hole that is formed in the first attachment member and that is screwed into the screw, the first attachment member being inserted through the adjustment portion. The screw is fixed Flip By screwed into the hole, the so irradiation direction of each of the 1LED light source is inclined with respect to the irradiation direction of the respective first 2LED light source, characterized by comprising disposed.

  In this vehicle headlamp, it is preferable that the first mounting member is disposed on the upper side in the vertical direction along the front surface of the second mounting member.

  In this vehicle headlamp, it is preferable that at least one of the first mounting member and the second mounting member has a heat radiating portion protruding to the opposite side of the irradiation direction.

  In this vehicle headlamp, it is preferable that the heat dissipating part is provided with an attaching part for attaching to the outside.

  In this vehicle headlamp, it is preferable that a high beam mode in which each of the first LED light sources and each of the second LED light sources is turned on and a low beam mode in which only each of the first LED light sources is turned on can be selected.

  In the vehicle headlamp according to the present invention, the illuminance in the irradiation area can be increased.

The vehicle headlamp of Embodiment 1 is shown, (a) is a schematic perspective view, (b) is a left view. The state which removed the fixing screw in the vehicle headlamp of Embodiment 1 is shown, (a) is a schematic perspective view, (b) is a left view. The state which removed the fixing member in the vehicle headlamp of Embodiment 1 is shown, (a) is a schematic perspective view, (b) is a left view. The state which assembled | assembled the 1st LED light source, the 1st attachment member, and the 1st cover in the vehicle headlamp of Embodiment 1 is shown, (a) is a top view, (b) is a front view. It is EE sectional drawing of FIG.4 (b). The state which assembled | assembled the 1st LED light source, the 1st attachment member, and the 1st cover in the vehicle headlamp of Embodiment 1 is shown, (a) is a left view, (b) is a rear view. The state which assembled | assembled the 1st LED light source, the 1st attachment member, and the 1st cover in the vehicle headlamp of Embodiment 1 is shown, (a) is the schematic perspective view seen from the front side, (b) is from the back side. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a railway vehicle using a vehicle headlamp according to a first embodiment. (A) is explanatory drawing of high beam mode, (b) is explanatory drawing of low beam mode regarding the vehicle headlamp of Embodiment 1. FIG. The vehicle headlamp of Embodiment 2 is shown, (a) is a schematic perspective view, (b) is a left view. The vehicle headlamp of a prior art example is shown, (a) is a front view, (b) is YY sectional drawing of (a).

(Embodiment 1)
Hereinafter, the vehicle headlamp according to the present embodiment will be described with reference to FIGS.

  The vehicle headlamp 10 of the present embodiment can be applied to a marker lamp 8 of a railway vehicle 50, for example, as shown in FIG.

  The marker lamp 8 includes a vehicle headlamp 10, a tail lamp 9, and a lamp body 51 that houses the vehicle headlamp 10 and the tail lamp 9. This indicator light 8 is attached to the railway vehicle 50.

  The lamp body 51 is formed in a box shape (in FIG. 8, a rectangular box shape) having an open surface. In addition, a partition wall 52 that bisects the interior space is provided inside the lamp body 51.

  The vehicle headlamp 10 includes a plurality of (eight in the illustrated example) first LED light sources 1, a first mounting member 3 on which each first LED light source 1 is mounted on the front surface, and a plurality (in the illustrated example, Eight) second LED light sources 2 and a second attachment member 4 having each second LED light source 2 attached to the front surface.

  As shown in FIG. 5, the first LED light source 1 includes a wiring substrate 12 on which a light emitting unit 11 using a plurality of LED elements (not shown) is mounted, and a lens that controls light distribution from the light emitting unit 11. 13 and a holder 14 for holding the lens 13.

  In the present embodiment, for example, an LED chip is employed as the LED element. The connection relationship of the plurality of LED chips may be a series connection or a parallel connection, or may be a combination of a series connection and a parallel connection. In the present embodiment, the number of LED elements is plural, but may be one.

  The light emitting unit 11 includes a plurality of LED chips, a mounting substrate 15 on which the plurality of LED chips are mounted, and a sealing unit 16 that covers the plurality of LED chips. In addition, the light emitting unit 11 is configured such that each LED chip is formed of a blue LED chip, and a phosphor made of a yellow phosphor that emits broad yellow light when excited by blue light emitted from the blue LED chip. The light-transmitting sealing material is mixed. That is, in the present embodiment, the light emitting unit 11 configures a white LED that emits white light. Note that, as the translucent sealing material, for example, a silicone resin, an epoxy resin, glass, or the like may be employed. Moreover, the fluorescent substance of the light emission part 11 is not restricted to a yellow fluorescent substance, For example, you may use a red fluorescent substance and a green fluorescent substance. Moreover, the light emission part 11 may comprise white LED which radiates | emits white light combining a purple-near-ultraviolet LED chip, a red fluorescent substance, a green fluorescent substance, and a blue fluorescent substance. Furthermore, the light emission part 11 may comprise white LED which radiates | emits white light combining a red LED chip, a green LED chip, and a blue LED chip.

  The wiring board 12 is formed using, for example, a metal base printed wiring board.

  A light emitting unit 11 is disposed at the center of one surface side of the wiring board 12 (left side in FIG. 5). In addition, on the other surface side of the wiring substrate 12, terminal portions (not shown) electrically connected to the light emitting portion 11 are formed at two locations. Each terminal portion is constituted by a conductor pattern of the wiring board 12. In addition, a pair of electric wires (not shown) for power feeding is electrically connected to each terminal part via a joint (not shown) made of, for example, solder.

  In the present embodiment, the wiring board 12 is formed using a metal-based printed wiring board, but is not limited thereto, and may be formed using, for example, a ceramic board or a glass epoxy board.

  The lens 13 is made of a translucent material (for example, silicone resin, acrylic resin, glass, etc.). The lens 13 is formed in a convex shape toward the light emitting unit 11 side (right side in FIG. 5), and a recess 17 facing the light emitting unit 11 is formed at the tip. Further, the lens 13 is formed so that the outer diameter gradually decreases as it approaches the light emitting unit 11 side from the light emitting surface 13a of the lens 13.

  The lens 13 has a function of guiding light incident from the inner bottom surface 17 a of the recess 17 to the light emitting surface 13 a and reflects light incident from the inner surface 17 b of the recess 17 on the outer peripheral surface of the lens 13. It is designed to have a function of guiding to the light exit surface 13a side.

  The holder 14 is made of, for example, resin. The holder 14 includes a cylindrical (cylindrical in this embodiment) main body portion 14a in which the lens 13 is accommodated, and a flange portion 14b extending outward from the rear end portion of the main body portion 14a. Have. A first attachment screw insertion hole (not shown) for inserting a first attachment screw (not shown) for attaching the first LED light source 1 to the first attachment member 3 from the front side of the holder 14 is provided in the flange portion 14b. However, it is formed at a plurality of locations.

  A holding portion 18 for holding the lens 13 protrudes inward from the front end portion of the main body portion 14a. The holding part 18 holds the outer collar part 19 formed on the light emitting surface 13a side of the outer peripheral part of the lens 13 between the first step part 20 provided inside the main body part 14a. Thereby, the holder 14 can hold the lens 13. In addition, it is desirable to join the outer collar part 19 and the main body part 14a of the lens 13 with, for example, an adhesive.

  A second step portion 21 for positioning the wiring board 12 is provided inside the rear end portion of the main body portion 14a.

  In the present embodiment, the holder 14 is formed of resin, but is not limited thereto, and may be formed of, for example, metal.

  The 1st attachment member 3 is formed in the box shape (this embodiment rectangular parallelepiped shape) which opened the rear surface. In the present embodiment, a metal (for example, steel) is used as the material of the first mounting member 3.

  Further, as shown in FIG. 6, the first attachment member 3 has a lead-out hole for leading a pair of electric wires connected to each terminal portion of the wiring board 12 in the first LED light source 1 at the center of the front wall 30. 22 is formed. Further, the front wall 30 of the first mounting member 3 has a plurality of first mounting screw holes 23 for screwing the first mounting screws inserted into the first mounting screw insertion holes of the holder 14 in the first LED light source 1. Is formed. In the present embodiment, the first mounting screw is inserted from the front surface side of the holder 14 in the first LED light source 1 into the first mounting screw insertion hole of the flange portion 14b, and the first mounting of the front wall 30 of the first mounting member 3 is performed. The first LED light source 1 is attached to the front side of the first attachment member 3 by being screwed into the screw hole 23. In the present embodiment, the first LED light sources 1 are arranged in a matrix. That is, the first LED light sources 1 are arranged in a matrix of 2 rows and 4 columns. In the present embodiment, the first mounting screw is screwed into the first mounting screw hole 23. However, the present invention is not limited to this. For example, the first mounting screw is screwed into the first mounting screw hole 23. Thereafter, it may be screwed into a nut or the like.

  The second LED light source 2 has the same configuration as the first LED light source 1. In the following description, in the second LED light source 2, the same components as those in the first LED light source 1 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In the present embodiment, the second LED light sources 2 are arranged in a matrix of 2 rows and 4 columns.

  The second mounting member 4 has the same configuration as the first mounting member 3. In the following description, in the second mounting member 4, the same components as those in the first mounting member 3 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The vehicle headlamp 10 includes a first cover 5 that covers the front side of the first mounting member 3, a second cover 6 that covers the front side of the second mounting member 4, the first mounting member 3, and the second mounting member 3. And a fixing member 7 for fixing the attachment member 4.

  The 1st cover 5 is formed in the box shape (this embodiment rectangular solid shape) which opened the rear surface. As a material of the first cover 5, for example, a translucent material (for example, an acrylic resin, a polycarbonate resin, or the like) can be employed. In the present embodiment, the size of the front wall 40 (see FIG. 4) of the first cover 5 is set smaller than the size of the front wall 30 of the first mounting member 3.

  In the front wall 40 of the first cover 5, window holes 45 for exposing the front side of the first LED light source 1 are formed at a plurality of locations (8 locations in the present embodiment).

  At the rear end portions of the right wall 42 and the left wall 43 of the first cover 5, flange portions 46 that protrude outward are formed.

  Each flange portion 46 is formed with a second attachment screw insertion hole (not shown) for inserting a second attachment screw 27 for attaching the first cover 5 to the first attachment member 3. A second mounting screw hole in which the second mounting screw 27 is screwed into the front wall 30 of the first mounting member 3 at a position corresponding to the second mounting screw insertion hole of each flange portion 46 of the first cover 5. 28 (see FIG. 6B) is formed. In the present embodiment, the second mounting screw 27 is inserted into the second mounting screw insertion hole of the flange portion 46 from the front side of the first cover 5, and the second mounting screw hole of the front wall 30 of the first mounting member 3 is inserted. The first cover 5 is attached to the front surface side of the first attachment member 3 by being screwed to 28. Thereby, the first cover 5 can cover the front side of the first attachment member 3. In the present embodiment, the second mounting screw 27 is screwed into the second mounting screw hole 28. However, the present invention is not limited to this. For example, the second mounting screw 27 is screwed into the second mounting screw hole 28. After mating, it may be screwed into a nut or the like.

  As shown in FIG. 7, each of the right wall 32 and the left wall 33 of the first mounting member 3 has a first fixing screw 25 (see FIG. 1) for fixing the first mounting member 3 to the fixing member 7. Are formed at a plurality of places (three places in the present embodiment). In the present embodiment, the center of each first fixing screw hole 26 is arranged on one straight line C parallel to the vertical direction along the front wall 30 of the first mounting member 3 (see FIG. 3). Further, in the present embodiment, each first fixing screw hole 26 is disposed at the center of the right wall 32 and the left wall 33 of the first mounting member 3.

  A second fixing screw 37 (see FIG. 1) is fixed to each of the right wall 32 and the left wall 33 of the second mounting member 4 with a second fixing screw 37 (see FIG. 1) for fixing the second mounting member 4 to the fixing member 7. Screw holes 38 are formed at a plurality of locations (three locations in the present embodiment). In this embodiment, the center of each 2nd fixing screw hole 38 is arrange | positioned on the one straight line D along the up-down direction of the 2nd attachment member 4 (refer FIG. 3). Further, in the present embodiment, each second fixing screw hole 38 is disposed in the central portion of the right wall 32 and the left wall 33 of the second mounting member 4.

  In the vehicular headlamp 10 of the present embodiment, the heat dissipating part in which the upper wall 31 of the first mounting member 3 protrudes on the opposite side of the irradiation direction of the first LED light source 1 (downward in FIG. 4A). It is composed. Thereby, in the vehicle headlamp 10 of the present embodiment, the heat generated by the first LED light source 1 is transmitted to the outside (in the present embodiment, the lamp of the railway vehicle 50) via the upper wall 31 of the first mounting member 3. It is possible to dissipate heat to the main body 51).

  The second cover 6 has the same configuration as the first cover 5. In the following description, in the second cover 6, the same components as those in the first cover 5 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The fixing member 7 has a plate-like (in this embodiment, rectangular plate-like) rear wall 71 and a pair of edges facing each other on the rear wall 71 in the thickness direction of the rear wall 71 (in this embodiment, the front side). And a pair of side walls 72, 73 extending to. Hereinafter, in the present embodiment, for convenience of explanation, one side wall 72 of the pair of side walls 72 and 73 is referred to as a right wall 72, and the other side wall 73 is referred to as a left wall 73. In the present embodiment, a metal (for example, steel) is used as the material of the fixing member 7.

  Each of the right wall 72 and the left wall 73 of the fixing member 7 has a first fixing screw insertion hole 29 (see FIG. 2) through which the first fixing screw 25 is inserted at a plurality of locations (in this embodiment, two locations). Is formed. Each of the right wall 72 and the left wall 73 of the fixing member 7 has a plurality of second fixing screw insertion holes 34 (see FIG. 2) through which the second fixing screw 37 is inserted (in this embodiment, two locations). ).

  In the present embodiment, the center of each second fixing screw insertion hole 34 is arranged on one straight line A along the vertical direction of the fixing member 7. In the present embodiment, the second fixing screw insertion holes 34 are arranged on the front end side and the lower end side of the right wall 32 and the left wall 33 of the fixing member 7.

  Further, in the present embodiment, the center of each first fixing screw insertion hole 29 is on one straight line B inclined to the front side of the fixing member 7 by an inclination angle θ with respect to the straight line A along the vertical direction of the fixing member 7. Is arranged. In the present embodiment, each first fixing screw insertion hole 29 is disposed on the front end side of the right wall 32 and the left wall 33 of the fixing member 7 and on the upper end side. In the present embodiment, the inclination angle θ is set to 7 degrees, but this value is not particularly limited.

  In the vehicle headlamp 10 of the present embodiment, the first fixing screw 25 is inserted into the first fixing screw insertion hole 29 of the fixing member 7 and screwed into the first fixing screw hole 26 of the first mounting member 3. By doing so, the first attachment member 3 is fixed to the fixing member 7. Further, in the vehicle headlamp 10 of the present embodiment, the second fixing screw 37 is inserted into the second fixing screw insertion hole 34 of the fixing member 7, and the second fixing screw hole 38 of the second mounting member 4 is inserted. The second mounting member 4 is fixed to the fixing member 7 by screwing. Thereby, as shown in FIG. 1, the first mounting member 3 is arranged such that the normal direction of the front surface of the first cover 5 is inclined downward with respect to the normal direction of the front surface of the second cover 6. . In other words, the first mounting member 3 is disposed such that the irradiation direction of each first LED light source 1 is inclined downward with respect to the irradiation direction of each second LED light source 2. In the present embodiment, the inclination angle θ of the straight line B with respect to the straight line A along the vertical direction of the fixing member 7 represents the inclination angle of the irradiation direction of each first LED light source 1 with respect to the irradiation direction of each second LED light source 2. Yes. In the present embodiment, the first fixing screw 25 is screwed into the first fixing screw hole 26. However, the present invention is not limited to this. For example, the first fixing screw 25 is screwed into the first fixing screw hole 26. After mating, it may be screwed into a nut or the like. In the present embodiment, the second fixing screw 37 is screwed into the second fixing screw hole 38. However, the present invention is not limited to this. For example, the second fixing screw 37 is screwed into the second fixing screw hole 38. After mating, it may be screwed into a nut or the like.

  Further, in the vehicle headlamp 10 of the present embodiment, the first LED light source 1 and the second LED light sources 2 are fixed to the fixing member 7 by fixing the first mounting member 3 and the second mounting member 4 to the fixing member 7. It is densely arranged on the front side. That is, in the vehicle headlamp 10, the first LED light sources 1 and the second LED light sources 2 are arranged in a matrix of 4 rows and 4 columns.

  A first power supply unit 35 that supplies power to the plurality of first LED light sources 1 and a second power supply unit 36 that supplies power to the plurality of second LED light sources 2 are disposed inside the fixing member 7. Yes. More specifically, a third attachment through which a third mounting screw (not shown) for attaching the first power supply unit 35 and the second power supply unit 36 to the fixing member 7 is inserted into the rear wall 71 of the fixing member 7. Screw insertion holes (not shown) are formed at a plurality of locations.

  In the present embodiment, the third mounting screw is inserted into each third mounting screw insertion hole of the fixing member 7, and the third mounting screw hole formed in advance in each of the first power supply unit 35 and the second power supply unit 36. The first power supply unit 35 and the second power supply unit 36 are attached to the fixing member 7 by screwing (not shown). That is, each of the first power supply unit 35 and the second power supply unit 36 is disposed inside the fixing member 7.

  In the present embodiment, a pair of electric wires (hereinafter referred to as a pair of first electric wires) led out from the lead-out hole 22 of the first mounting member 3 are electrically connected to the first power supply unit 35. In the present embodiment, the pair of second electric wires led out from the lead-out hole 22 of the second mounting member 4 is electrically connected to the second power supply unit 36.

  A first power supply line for supplying power to the first power supply unit 35 is electrically connected to the first power supply unit 35. A second power supply line for supplying power to the second power supply unit 36 is electrically connected to the second power supply unit 36.

  A fourth mounting screw (not shown) for mounting the vehicle headlamp 10 to the outside (in this embodiment, the lamp body 51 of the railway vehicle 50) is inserted into the upper wall 31 of the first mounting member 3. A fourth mounting screw insertion hole 24 is formed. In the vehicle headlamp 10 of the present embodiment, the fourth mounting screw insertion hole 24 of the upper wall 31 of the first mounting member 3 constitutes a mounting portion for mounting the vehicle headlamp 10 to the outside. . Thereby, in the vehicle headlamp 10 of the present embodiment, the vehicle headlamp 10 can be attached to the outside.

  Moreover, the vehicle headlamp 10 can select a high beam mode in which each first LED light source 1 and each second LED light source 2 are turned on, and a low beam mode in which only each first LED light source 1 is turned on. More specifically, in the present embodiment, each first LED light source 1 and each second LED light source 2 may be turned on by the first power supply unit 35 and the second power supply unit 36 in the high beam mode. In the present embodiment, only the first LED light sources 1 need be turned on by the first power supply unit 35 in the low beam mode.

  Hereinafter, the operation of turning on the vehicle headlamp 10 of the present embodiment will be described with reference to FIG.

  For example, when the high beam mode is selected by the operation unit (not shown) of the railway vehicle 50, the first power supply unit 35 and the second power supply unit 36 are configured so that the vehicle headlamp 10 follows the instructions from the operation unit. The first LED light sources 1 and the second LED light sources 2 are turned on (see FIG. 9A). Thereby, in the railway vehicle 50 using the vehicle headlamp 10, when the other railway vehicles are not running opposite to each other, the first LED light sources 1 and the second LED light sources 2 are turned on to emit light to a long distance. Can be irradiated. FIG. 9A shows a state where each first LED light source 1 and each second LED light source 2 are lit.

  Therefore, in the vehicle headlamp 10, for example, when irradiating light up to a long distance, the first LED light sources 1 and the second LED light sources 2 that are densely arranged on the front side of the fixing member 7 are turned on. Compared with the conventional vehicle headlamp 80 having the configuration shown in FIG. 11, the illuminance in the irradiation area can be increased without increasing the number of LED light sources to be turned on.

  Further, in the vehicle headlamp 10, when the low beam mode is selected by the operation unit of the railway vehicle 50, the first power source unit 35 turns on only each first LED light source 1 in accordance with an instruction from the operation unit. (See FIG. 9B). Thereby, in the railway vehicle 50 using the vehicle headlamp 10, when other railway vehicles are running facing each other, only the first LED light sources 1 can be turned on to irradiate light at a short distance. It becomes possible, and it becomes possible to make it difficult for the drivers of other railway vehicles that run oppositely to feel dazzling. FIG. 9B shows a state in which only each first LED light source 1 is lit.

  By the way, in the vehicle headlamp 80 of the conventional example, when irradiating light to a long distance, the 16 first LED light sources 81 are turned on. Further, in the vehicle headlamp 80 of the conventional example, when irradiating light at a short distance, the eight second LED light sources 82 are turned on. That is, in the conventional vehicle headlamp 80, 24 LED light sources are required.

  On the other hand, in the vehicle headlamp 10 of this embodiment, when irradiating light to a long distance, the eight first LED light sources 1 and the eight second LED light sources 2 are turned on. Moreover, in the vehicle headlamp 10 of this embodiment, when irradiating light at a short distance, only the eight first LED light sources 1 are turned on. Therefore, in the vehicle headlamp 10 of the present embodiment, the number of LED light sources can be reduced as compared with the vehicle headlamp 80 of the conventional example, and the cost can be reduced.

  In addition, the vehicle headlamp 10 of this embodiment is not limited to the marker lamp 8 of the railway vehicle 50, and can be applied to, for example, a tractor and other general vehicle headlamps.

  The vehicle headlamp 10 of the present embodiment described above includes a plurality of first LED light sources 1, a first mounting member 3 on which each first LED light source 1 is mounted on the front surface, a plurality of second LED light sources 2, and each The 2nd LED light source 2 is provided with the 2nd attachment member 4 attached to the front surface. Further, in the vehicle headlamp 10 of the present embodiment, the first mounting member 3 and the second mounting member 4 are arranged side by side, and the first mounting member 3 is irradiated in the irradiation direction of each first LED light source 1. Are arranged so as to be inclined with respect to the irradiation direction of each second LED light source 2. Thereby, in the vehicle headlamp 10 of this embodiment, when irradiating light to a long distance, each 1st LED light source 1 and each 2nd LED light source 2 which were densely arrange | positioned at the front side of the fixing member 7 are arranged. Since it is lit, it is possible to increase the illuminance in the irradiation area as compared with the vehicle headlamp 80 of the conventional example.

  Further, in the vehicle headlamp 10 of the present embodiment, the first mounting member 3 is disposed on the upper side in the vertical direction along the front surface of the second mounting member 4. Thereby, in the railway vehicle 50 using the vehicle headlamp 10 of the present embodiment, for example, when irradiating light at a short distance, each first LED light source 1 is compared with the vehicle headlamp 80 of the conventional example. Therefore, it is possible to prevent the light emitted from the light from hitting the peripheral wall of the lamp body 51 of the railway vehicle 50 and being blocked.

(Embodiment 2)
The basic configuration of the vehicle headlamp 10 of the present embodiment is the same as that of the first embodiment. As shown in FIG. 10, the first LED light source 1 with respect to the irradiation direction of each second LED light source 2 is fixed to the fixing member 7. The difference from the first embodiment is that an adjustment unit 39 capable of adjusting the tilt angle θ in the irradiation direction is provided. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The adjustment unit 39 is configured by an arc-shaped insertion hole through which the first fixing screw 25 can be inserted. The adjustment unit 39 is provided on each of the right wall 72 and the left wall 73 of the fixing member 7.

  In the vehicle headlamp 10 of the present embodiment, first, the first fixing screw 25 is inserted into the first fixing screw insertion hole 29 of the fixing member 7 and then into the first fixing screw hole 26 of the first mounting member 3. Temporarily fix. Next, the first fixing screw 25 is inserted into the adjustment portion 39 of the fixing member 7 and temporarily fixed to the first fixing screw hole 26 of the first mounting member 3. And after moving the 1st fixing screw 25 inserted in the adjustment part 39 of the fixing member 7 to one side (right side in FIG.10 (b)) of this adjustment part 39, this 1st fixing screw 25 is made into 1st. Screwed into the fixing screw hole 26. Finally, the first fixing screw 25 inserted through the first fixing screw insertion hole 29 of the fixing member 7 is screwed into the first fixing screw hole 26. Thereby, in the vehicle headlamp 10 of this embodiment, it becomes possible to make the irradiation direction of each 1st LED light source 1 the same direction as the irradiation direction of each 2nd LED light source 2. FIG.

  On the other hand, in the vehicle headlamp 10 of the present embodiment, the first fixing screw 25 inserted through the adjusting portion 39 of the fixing member 7 is moved to the other side (left side in FIG. 10B) of the adjusting portion 39. After that, the first fixing screw 25 is screwed into the first fixing screw hole 26. Then, the first fixing screw 25 inserted through the first fixing screw insertion hole 29 of the fixing member 7 is screwed into the first fixing screw hole 26. Thereby, in the vehicle headlamp 10 of the present embodiment, the irradiation direction of each first LED light source 1 can be tilted downward with respect to the irradiation direction of each second LED light source 2.

  Therefore, in the vehicle headlamp 10 of the present embodiment, the inclination angle θ of the irradiation direction of each first LED light source 1 with respect to the irradiation direction of each second LED light source 2 can be adjusted to a desired angle.

  In the vehicle headlamp 10 of the present embodiment described above, the fixing member 7 is provided with the adjustment unit 39 that can adjust the inclination angle θ of the irradiation direction of each first LED light source 1 with respect to the irradiation direction of each second LED light source 2. ing. Thereby, in the vehicle headlamp 10 of this embodiment, it becomes possible to adjust the irradiation direction of each 1st LED light source 1. FIG.

DESCRIPTION OF SYMBOLS 1 1st LED light source 2 2nd LED light source 3 1st attachment member 4 2nd attachment member 7 Fixing member 10 Vehicle headlamp 24 4th attachment screw penetration hole (attachment part)
31 Upper wall (heat dissipation part)
39 Adjustment section θ Tilt angle

Claims (5)

A plurality of first 1LED light source, a first attachment member to which the respective first 1LED light source is attached to the front surface, and a plurality of second 2LED light source, and a second mounting member to which the respective first 2LED light source is attached to the front surface, the first A fixing member that fixes the first mounting member and the second mounting member, and an adjustment mechanism configured to be capable of adjusting an inclination angle of the irradiation direction of each first LED light source with respect to the irradiation direction of each second LED light source ,
The first mounting member and the second mounting member are arranged side by side with the fixing member ,
The adjustment mechanism includes a screw, an adjustment portion that is an arc-shaped insertion hole formed in the fixing member and through which the screw is inserted, and a fixing that is formed in the first mounting member and is screwed into the screw. With screw holes,
In the first mounting member, an irradiation direction of each of the first LED light sources is relative to an irradiation direction of each of the second LED light sources because the screw inserted through the adjustment portion is screwed into the fixing screw hole. A vehicular headlamp characterized by being arranged so as to tilt.   2. The vehicle headlamp according to claim 1, wherein the first mounting member is disposed on an upper side in a vertical direction along the front surface of the second mounting member. 3. The vehicle according to claim 1, wherein at least one of the first mounting member and the second mounting member has a heat radiating portion protruding to the opposite side of the irradiation direction. Headlight. The vehicle headlamp according to claim 3, wherein the heat dissipating part is provided with an attaching part for attaching to the outside. 5. The high beam mode for turning on each of the first LED light sources and the second LED light sources and the low beam mode for turning on only the first LED light sources can be selected. The vehicle headlamp according to item 1.

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