JP3928692B2 - Vehicle headlamp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel vehicle headlamp. More specifically, the present invention relates to a technology for reducing the size of a vehicle headlamp that irradiates one beam with two reflectors each supporting a light source, particularly in the vertical direction.
[0002]
[Prior art]
In a vehicle headlamp, in order to irradiate one beam, two reflectors each supporting a light source are used.
[0003]
For example, in a headlight for an automobile, a part of the beam travels to the left or right with respect to the main optical axis in response to a steering operation, that is, an operation to turn a steering wheel for turning. In order to be able to irradiate the direction in advance, one reflector always illuminates the main optical axis direction, and the other reflector rotates in the left and right direction according to the steering operation. There are attempts to irradiate reliably.
[0004]
[Problems to be solved by the invention]
By the way, in the above-mentioned vehicle headlamp, when two reflectors are arranged side by side, the left and right sizes become too large to secure a rotating space for the reflector on the side of oscillating the beam. Since the optical axes of the reflectors intersect in the horizontal direction, there is a problem that it is difficult to achieve consistency between the beams irradiated by the two reflectors.
[0005]
In addition, if two reflectors are arranged side by side, the vertical size of the vehicle headlamps will increase, and not only will it look bad, but it will also be mounted on an automobile with a small front end vertical width. There was a problem that was difficult.
[0006]
Therefore, an object of the present invention is to reduce the size, particularly in the vertical direction, of a vehicle headlamp that emits one beam by two reflectors each supporting a light source.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, the vehicle headlamp of the present invention has a lamp body having a recess opened to the front, The Lamp body A bracket supported so as to be tiltable up and down and left and right inside, In the lamp body Sandwich the bracket above It was placed side by side above and supported the light source. , Consisting of independent members With two reflectors, the lower reflector is By the vertical support provided on the bracket Can be rotated horizontally Supported A passing beam is formed by the upper reflector and the light source supported by the reflector, and the upper reflector is Below the light source mounting position It has no part.
[0008]
Therefore, in the vehicle headlamp of the present invention, the reflector positioned on the upper side is Below the light source mounting position Since there is no part, there is no part that does not affect the light distribution, and the lower reflector can be placed in the missing part, thereby reducing the vertical size of the vehicle headlamp it can.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a vehicle headlamp according to the present invention will be described below with reference to the accompanying drawings. In each of the illustrated embodiments, the present invention is applied to a headlamp that emits a low beam for automobiles.
[0012]
1 to 3 show a first embodiment of a vehicle headlamp according to the present invention.
[0013]
The vehicular headlamp 1 has a lamp body 3 having a recess 2 that opens forward. The opening surface 2a of the lamp body 3 is inclined forward and downward. And this opening surface 2a is covered with the transparent front cover 4 (refer FIG. 1).
[0014]
A bracket 5 is arranged as a support member in the recess 2 of the lamp body 3 whose front opening 2a is covered by the front cover 4. The bracket 5 has a substantially plate shape and is supported by the lamp body 3 so as to be tiltable. Mounting holes 6, 6, 6 are formed in the bracket 5 at the upper right, lower right, and upper left as viewed from the front, and the lines connecting these three mounting holes 6, 6, 6 are substantially perpendicular. (See FIG. 2).
[0015]
A ball receiver 7 is supported in the upper right mounting hole 6 toward the bracket 5. The ball receiver 7 is made of a synthetic resin, and has a spherical concave portion 7a opened on the rear surface (see FIG. 3). Further, nut bodies 8 and 8 are supported in the upper left and lower right mounting holes 6 and 6 toward the bracket 5. The nut body 8 is made of a synthetic resin and has a lower hole 8a penetrating in the front-rear direction (see FIGS. 2 and 3).
[0016]
A fulcrum shaft 9 is fixed to the rear wall 3 a of the lamp body 3. The rear end portion of the fulcrum shaft 9 is a screw shaft portion 9 a, and the screw shaft portion 9 a is screwed to the rear surface wall 3 a of the lamp body 3. A sphere 9b is formed at the front end of the fulcrum shaft 9, and the sphere 9b is rotatably fitted in the spherical recess 7a of the ball receiver 7 (see FIG. 3). The ball support 7 and the fulcrum shaft 9 constitute a rotation fulcrum portion 10.
[0017]
Two aiming screws 11, 11 are rotatably supported on the rear wall 3 a of the lamp body 3. Operated portions 11a and 11a are formed at rear end portions of the aiming screws 11 and 11 projecting to the rear side of the rear wall 3a of the lamp body 3, and screw shaft portions 11b and 11b formed at the front half portions are the nuts. Screwed into the lower holes 8a, 8a of the bodies 8, 8 (see FIG. 3). The nut bodies 8 and 8 and the aiming screws 11 and 11 constitute interval adjusting parts 12 and 12.
[0018]
And in the space | interval adjustment parts 12 and 12, by rotating the aiming screws 11 and 11, the screw shaft parts 11b and 11b are screwed into the nut bodies 8 and 8 according to the rotation direction. Therefore, the interval between the portion of the bracket 5 where the nut bodies 8 and 8 are supported and the portion of the lamp body 3 where the aiming screws 11 and 11 are supported is adjusted. Therefore, when the aiming screw 11 is rotated in the lower right distance adjustment unit 12, the bracket 5 tilts in the vertical direction about a line connecting the rotation fulcrum 10 and the upper left distance adjustment unit 12 as the rotation axis. In addition, when the aiming screw 11 is rotated in the upper left distance adjustment section 12 (shown in FIG. 3), the bracket 5 connects the lower right distance adjustment section 12 to the rotation fulcrum section 10. The line is tilted in the left-right direction about the rotation axis.
[0019]
A main reflector 13 constituting a passing beam (low beam) is supported on substantially the upper half of the bracket 5. The main reflector 13 has a substantially paraboloidal reflecting surface 13a, and a shape in which most of the portion located below the optical axis of the reflecting surface 13a is removed, that is, a circular arc upward when viewed from the front. (Refer FIG. 2). Three mounting bosses 13b, 13b, and 13b (only two are shown in FIG. 2) protrude from the back surface of the main reflector 13. A substantially semicircular opening 14 is formed in the upper half of the bracket 5, and three screw insertion holes 15, 15, 15 are formed around the opening 14 (see FIG. 2).
[0020]
The shape of the reflecting surface 13a of the main reflector 13 is not limited to the shape of a rotating paraboloid, but other shapes of reflecting surfaces, for example, step reflectors or free curved surface reflectors that are divided into fine reflecting elements as a whole. It's okay.
[0021]
A light source bulb 16 is detachably supported on the main reflector 13. In this embodiment, a discharge bulb is used as the light source bulb 16 (see FIG. 1), but this does not mean that the light source bulb supported by the main reflector 13 is limited to the discharge bulb. Any type of bulb may be used as long as the luminous intensity can be obtained. The light emitting part (discharge region) 16a of the light source bulb 16 is located near the focal point of the reflecting surface 13a, and most of the light emitted from the light source bulb 16 and reflected by the reflecting surface 13a is from the optical axis of the reflecting surface 13a. The lower side is irradiated. In order to form the cut line of the low beam, a shade 17 is disposed to cover the front and the lower side of the light source bulb 16 (see FIG. 1), and as a result, no direct light is emitted from the light source bulb 16 forward and downward. The shade 17 includes a front light-shielding portion 17a that shields light directly emitted from the light source bulb 16 and a lower light-shielding portion 17b that shields light irradiated downward (see FIG. 5).
[0022]
Here, most part of the main reflector 13 below the position where the light source bulb 16 is attached is a part that does not affect the light distribution. That is, when irradiating a low-pass beam, the light directed toward the reflecting surface located below the light source bulb is prevented from glare to the oncoming vehicle (forms a cut line), and the lower light shielding portion 17b of the shade 17 (see FIG. 5). Therefore, the light from the light source bulb 16 does not go to the shaded area in FIG. Therefore, a portion below the position where the light source bulb 16 is attached is not necessary in the main reflector 13, and a sub reflector described later is disposed in this portion.
[0023]
The mounting screws 18, 18, 18 (see FIG. 2) inserted from the rear through the screw insertion holes 15, 15, 15 of the bracket 5 are screwed to the mounting bosses 13 b, 13 b, 13 b of the main reflector 13, thereby The main reflector 13 is fixed to the bracket 5. The rear end of the main reflector 13 is inserted through the opening 14 and protrudes to the rear side of the bracket 5 (see FIG. 1).
[0024]
A sub reflector 19 is rotatably supported on the lower half of the bracket 5. The sub-reflector 19 includes a reflection surface portion 19a having a shape obtained by horizontally cutting the substantially central portion of the paraboloid of revolution, and upper and lower surface portions 19b and 19c. A light source bulb 20 is supported at the rear center portion of the reflection surface portion 19a. (See FIG. 2). In this embodiment, a halogen bulb is used as the light source bulb 20 (see FIG. 1), but this does not mean that the light source bulb supported by the sub-reflector 19 is limited to the halogen bulb. Any type of bulb may be used as long as the luminous intensity can be obtained. The light emitting part (filament) 20a of the light source bulb 20 is positioned in the vicinity of the focal point of the reflection surface portion 19a, and the light emitted from the light source bulb 20 and reflected by the reflection surface portion 19a is a light beam substantially parallel to the optical axis of the reflection surface portion 19a. Is emitted.
[0025]
The rear ends of the two upper and lower support arms 21 and 22 are fixed to the substantially central part and the lower end part in the vertical direction of the bracket 5, and the tip part of the upper support arm 21 is the substantially central part of the upper surface part 19 b of the sub reflector 19. In addition, the tip of the lower support arm 22 is pivotally connected to the substantially central portion of the lower surface 19c of the sub-reflector 19, so that the sub-reflector 19 is attached to the substantially lower half of the bracket 5 on the left and right sides. It is supported so as to be rotatable in the direction.
[0026]
Therefore, the sub reflector 19 is disposed on the front side of the main reflector 13, in other words, the main reflector 13 is disposed on the rear side of the sub reflector 19.
[0027]
A drive unit 23 is fixed to the lower half of the bracket 5. The drive unit 23 includes a rotating disk 24, and a rear end portion of the driving link 25 is rotatably connected to a position near the periphery of the rotating disk 24. Further, the front end portion of the drive link 25 is rotatably connected to a position offset from a portion of the upper surface portion 19b of the sub reflector 19 supported by the support arm 21 (see FIG. 2). The drive unit 23 is driven in response to a steering operation, that is, an operation of turning a steering wheel for turning, and the rotation disk 24 is rotated by the drive, and the drive link 25 is moved substantially in the front-rear direction. The sub reflector 19 is rotated in the left-right direction. Accordingly, the sub beam irradiated by the light source bulb 20 and the sub reflector 19 is directed to the left or right with respect to the main optical axis coinciding with the optical axis of the main reflector 13, whereby the traveling direction is irradiated in advance, Traffic safety can be ensured by ensuring forward illumination when driving on a curved road or turning at an intersection.
[0028]
In the vehicle headlamp 1 described above, the upper reflector 13 covers most of the portion below the optical axis that is unnecessary for irradiation of the passing beam among the rotary parabolic reflecting surfaces. Since the sub-reflector 19 is disposed in the removed portion with the removed shape, the two reflectors 13 and 19 can be disposed in the vertical direction without wasting space, and the headlamp 1 can be disposed in the vertical direction. The size can be reduced.
[0029]
In addition, since the main reflector 13 disposed on the upper side is disposed on the rear side of the sub reflector 19 disposed on the lower side, the front reflector is suitable for application to a headlamp having a front-lowering shape, The drive unit 23 for tilting the lower reflector 19 can be disposed behind the lower reflector 19, and space can be used effectively.
[0030]
6 to 9 show a second embodiment of the vehicle headlamp of the present invention.
[0031]
The vehicle headlamp 30 includes a lamp body 32 having a recess 31 that opens forward. The opening surface 31a of the lamp body 32 is covered with a transparent front cover 33 (see FIG. 6). In addition, although the lens step is not provided in the front cover 33, you may provide a lens step according to the required light distribution pattern.
[0032]
Two reflectors are arranged in the recess 31 of the lamp body 32 in a state of being vertically arranged via a bracket 34. The bracket 34 has a frame shape having large openings 35 and 36 arranged in the vertical direction, and support plates 37 and 38 that face in parallel in the vertical direction protrude from the position sandwiching the lower opening 36 toward the front. Has been. Screw insertion holes 39, 39,... Are formed in portions located on both sides of the upper opening 35. Further, two mounting bosses 40, 40 (only one is shown in FIG. 7) project from the lower end portion of the bracket 34 so as to be spaced apart from each other (see FIG. 7).
[0033]
A main reflector 41 is fixed to substantially the upper half of the bracket 34. The main reflector 41 includes a reflection surface portion 41a having a reflection surface 42 on the front surface, an upper surface portion 41b, and a lower surface portion 41c. The front surface of the reflecting surface portion 41a, that is, the reflecting surface 42 has a shape that is cut in a strip shape that is long in the left-right direction when viewed from the front of the upper part of the paraboloidal surface near the optical axis. Screw bosses 43, 43,... (Shown only on one side in FIG. 7) protrude from positions on both sides of the rear surface of the reflecting surface portion 41 a (see FIGS. 6 and 7).
[0034]
In the main reflector 41, the mounting screws 44, 44,... Inserted through the screw insertion holes 39, 39,. It is fixed to the bracket 34. Then, substantially the latter half of the main reflector 41 is inserted through the opening 35 on the upper side of the bracket 34 and protrudes to the rear side of the bracket 34 (see FIG. 6).
[0035]
A light source bulb 45 is detachably supported on the main reflector 41. In this embodiment, a discharge bulb is used as the light source bulb 45 (see FIG. 6), but this does not mean that the light source bulb supported by the main reflector 41 is limited to the discharge bulb. Any type of bulb may be used as long as the luminous intensity can be obtained. The light emitting part (discharge region) 45a of the light source bulb 45 is located in the vicinity of the focal point of the reflective surface 42, and most of the light emitted from the light source bulb 45 and reflected by the reflective surface 42 is from the optical axis of the reflective surface 42. The lower side is irradiated. A shade 46 that covers the front and the lower side of the light source bulb 45 is disposed (see FIGS. 6 and 7), so that direct light is not emitted forward from the light source bulb 45.
[0036]
The main reflector 41 and the light source bulb 45 described above form a light distribution that is the basis of the passing beam.
[0037]
The reason why the portion below the position where the light source bulb 45 is attached in the main reflector 41 is the portion that does not affect the light distribution is the same as the reason described in the first embodiment. The main reflector 41 does not have most of the lower part from the position where the light source bulb 45 is attached, and the sub reflector 47 is disposed in this part.
[0038]
A sub reflector 47 is supported on the substantially lower half of the bracket 34 so as to be rotatable in the left-right direction.
[0039]
The sub-reflector 47 includes a reflecting surface portion 47a having a shape obtained by horizontally cutting a substantially central portion of the paraboloid of revolution, and upper and lower surface portions 47b and 47c. The upper surface portion 47b is formed in a shape that protrudes slightly forward from the central portion of the upper edge of the reflection surface portion 47a in the left-right direction, and the lower surface portion 47c is formed in a shape that protrudes forward from the entire lower edge of the reflection surface portion 47a. (See FIG. 7). A supported shaft 48 protrudes upward from the tip of the upper surface of the upper surface portion 47b, and an engagement groove 48a is formed over the entire outer peripheral surface near the upper end of the supported shaft 48. (See FIGS. 6, 7, and 8). The supported shaft 49 protrudes downward from a position near the rear end of the lower surface portion 47c, that is, a position corresponding to the supported shaft 48 formed on the upper surface portion 47b, and the lower end of the supported shaft 49 An engaging groove 49a is formed on the entire outer peripheral surface in the vicinity, and a connection hole 50 opened on the lower surface is formed on the supported shaft 49. And the engaging groove 50a, 50a, ... extended in an axial direction is formed in the internal peripheral surface of the connection hole 50 of the to-be-supported shaft 49 (refer FIG. 6, FIG. 9).
[0040]
A light source bulb 51 is supported at the center of the rear part of the reflecting surface 47a of the sub reflector 47 (see FIGS. 6 and 7). In this embodiment, a halogen bulb is used as the light source bulb 51 (see FIG. 6), but this does not mean that the light source bulb supported by the sub-reflector 47 is limited to the halogen bulb. Any type of bulb may be used as long as the luminous intensity can be obtained. The light emitting part (filament) 51a of the light source bulb 51 is positioned in the vicinity of the focal point of the reflection surface part 47a, and the light emitted from the light source bulb 51 and reflected by the reflection surface part 47a is a light beam substantially parallel to the optical axis of the reflection surface part 47a. Is emitted. A shade 52 that covers the front of the light source bulb 51 is disposed (see FIG. 6) so that direct light is not emitted forward from the light source bulb 51.
[0041]
The sub-reflector 47 described above is supported between the support plates 37 and 38 of the bracket 34 so as to be rotatable in the left-right direction as follows.
[0042]
First, the support of the upper supported shaft 48 will be described. A circular support hole 53 is formed at the front end portion of the support plate 37 on the upper side of the bracket 34, and a slit 54 extends from the support hole 53 to the front end of the support plate 37. The width of the slit 54 is slightly larger than the outer diameter of the supported shaft 48 above the sub reflector 47, and the diameter of the support hole 53 is larger than the width of the slit 54. On the upper surface of the support plate 37, a low-profile wall 55 that is slightly larger than the support hole 53 and has a circular shape coaxial with the support hole 53 is erected at a position slightly away from the opening edge of the support hole 53. (See FIG. 8).
[0043]
A bearing body 56 is supported in the support hole 53 of the support plate 37 on the upper side of the bracket 34. The bearing body 56 has a substantially cylindrical shape, and has a circular flange 56a projecting outward at the upper end portion. The inner diameter of the center hole 56b is slightly smaller than the outer diameter of the supported shaft 48 on the upper side of the sub reflector 47. It has been enlarged. The outer shape of the flange portion 56a is slightly smaller than the inner diameter of the surrounding wall 55 of the support plate 37 (see FIG. 8).
[0044]
Therefore, the supported shaft 48 of the sub-reflector 47 is positioned at the center of the support hole 53 of the support plate 37, and the bearing body 56 is externally fitted to the supported shaft 48 from above in that state. Then, the portion of the supported shaft 48 where the engaging groove 48a is formed protrudes upward from the upper end of the bearing body 56, so that the E ring 57 is engaged with the engaging groove 48a (see FIG. 8). As a result, the supported shaft 48 is integrated with the bearing body 56 and is prevented from coming out of the center hole 56b. And since the outer diameter of the bearing body 56 is made larger than the width | variety of the slit 54 of the support plate 37, the bearing body 56 does not drop from the support plate 37. FIG. In this manner, the upper surface portion 47 b of the sub reflector 47 is rotatably supported by the support plate 37 at the supported shaft 48 portion.
[0045]
Next, the support of the supported shaft 49 on the lower side of the sub reflector 47 will be described. The support plate 38 on the lower side of the bracket 34 is formed with a notch 58 opened at the front edge, and the rear end edge 58a of the notch 58 is formed in a semicircular shape. The width of the notch 58 is slightly larger than the outer diameter of the supported shaft 49 below the sub-reflector 47, and the rear end edge 58 a is an arc that substantially follows the outer peripheral surface of the supported shaft 49. In addition, an arc-shaped surrounding wall that surrounds the arc portion 58a of the slit 58 in the lower surface of the support plate 38 and that is slightly spaced from the arc portion 58a is centered on the center of the circle where the arc portion 58a is located. 59 is formed in a C shape when viewed from below (see FIG. 9).
[0046]
In the surrounding wall 59 of the support plate 38, a bearing body 60 is positioned in an internal fit. The bearing body 60 has a substantially ring shape, and its outer diameter is slightly smaller than the inner diameter of the surrounding wall 59, and the inner diameter is slightly larger than the outer diameter of the supported shaft 48 below the sub reflector 47. (See FIG. 9).
[0047]
Then, a metal bearing member 61 having a ring shape is fitted on the base of the supported shaft 49 of the sub reflector 47, and in this state, the supported shaft 49 is connected to the rear end portion of the slit 54 of the support plate 38 and the bearing member. The C-ring 62 is engaged with the engagement groove 49a of the supported shaft 49 that is inserted through the shaft 60 and protrudes downward from the lower surface of the bearing member 60, thereby preventing the supported shaft 49 from coming out of the bearing body 60. (See FIG. 9). In this way, the lower surface portion 47 c of the sub reflector 47 is rotatably supported by the support plate 38 at the supported shaft 49.
[0048]
In the state as described above, the sub-reflector 47 is supported by the support plates 37 and 38 of the bracket 34 so as to be rotatable in the left-right direction. The specific support method is as follows.
[0049]
First, the sub reflector 47 is inserted between the support plates 37 and 38 from the front in a state where the bearing bodies 56 and 60 are not supported by the support plates 37 and 38 of the bracket 34. Then, the supported shafts 48 and 49 of the sub reflector 47 (with the bearing member 61 fitted on the base portion) are inserted into the slits 54 and the notches 58 of the support plates 37 and 38, respectively, and the upper supported shaft 48 is inserted. Is positioned at the center position of the support hole 53, and the lower supported shaft 49 is positioned at the center position of the circle where the arc portion 58a of the notch 58 is positioned. Then, the bearing body 56 is externally fitted to the upper supported shaft 48 through the support hole 53 from above, the flange 56a is fitted into the surrounding wall 55, and the bearing body 60 is lowered from the lower supported shaft. 49 and the surrounding wall 59, and the E ring 57 and the C ring 62 are engaged with the engaging grooves 48a and 49a, respectively.
[0050]
Since the sub reflector 47 is supported by the support plates 37 and 38 so as to be rotatable in the left-right direction as described above, the distance between the support plates 37 and 38 is substantially the same as the vertical width of the sub reflector 47. However, it can be supported by the support plates 37 and 38. The rear end portion of the sub-reflector 47 protrudes rearward from the lower opening 36 of the bracket 34 (see FIG. 6).
[0051]
A driving unit 63 for rotating the sub reflector 47 is supported at the lower end of the bracket 34. The drive unit 63 is configured such that a drive source such as a motor and a solenoid and necessary elements are housed in a case body 64, and a rotating shaft 65 protruding upward is rotated by driving of the drive source. A plurality of engaging protrusions 65a, 65a,... Extending in the axial direction protrude from the outer peripheral surface of the rotating shaft 65 (see FIGS. 6 and 9). Mounted pieces 66 and 66 (only one of them is shown in FIGS. 6 and 7) project from the left and right side surfaces of the case body 64, and the mounted pieces 66 and 66 have screw insertion holes. 66a and 66a are formed.
[0052]
The drive unit 63 has mounting screws 67 and 67 (only one of which is shown in FIGS. 6 and 7) inserted through the screw insertion holes 66 a and 66 a of the attachment pieces 66 and 66 from below. The bosses 40 and 40 are screwed together, thereby being attached to the lower end portion of the bracket 34. At the same time, the rotation shaft 65 of the drive unit 63 is fitted in the connection hole 50 of the supported shaft 49 on the lower side of the sub reflector 47, and the engagement protrusions 65a, 65a,. Are engaged with the engaging grooves 50a, 50a,... Of the connecting hole 50, whereby the rotating shaft 65 and the supported shaft 49 are connected in a key connection, that is, in a state in which no slip occurs in the rotation direction. The
[0053]
A drive source (not shown) of the drive unit 63 is driven by the control circuit unit 67. For example, the control circuit unit 67 sends a drive signal corresponding to the steering operation to the drive unit 63, and the rotation shaft 65 is rotated in a predetermined direction by a predetermined angle in accordance with the drive signal. Therefore, the sub beam irradiated by the light source bulb 51 and the sub reflector 47 is directed to the left or right with respect to the main optical axis that coincides with the optical axis of the main reflector 41, whereby the traveling direction is irradiated in advance, Traffic safety can be ensured by ensuring forward illumination when driving on a curved road or turning at an intersection. The control circuit unit 68 is placed outside the lamp body 32, and the control circuit unit 68 and the drive unit 63 are connected by cords 69 and 69 and connectors 70 and 70 (see FIG. 7).
[0054]
The bracket 34 is fixed to the lamp body 32. In order to facilitate aiming adjustment, the bracket 34 can be tiltably supported on the lamp body 32.
[0055]
In the vehicle headlamp 30 described above, the upper reflector 41 has most of the portion below the optical axis that is unnecessary for irradiation of the passing beam among the rotary parabolic reflecting surfaces. Since the sub-reflector 47 is arranged in the removed portion with the removed shape, the two reflectors 41 and 47 can be arranged in the vertical direction without wasting space, and the headlamp 30 can be arranged in the vertical direction. The size can be reduced.
[0056]
Further, since the rotation shaft 65 of the drive unit 63 for rotating the sub reflector 47 is directly connected to the supported shaft 49 below the sub reflector 47, the drive link 25 in the first embodiment ( The member is not interposed between the two reflectors 41 and 47, and the gap between the two reflectors 41 and 47 can be reduced.
[0057]
In the illustrated embodiment, the present invention is applied to a headlight that irradiates a low beam for automobiles. However, the present invention is not limited thereto, and before the traveling beam for automobiles is irradiated. The present invention can be widely applied to an illumination lamp and other vehicle headlamps suitable for irradiating a beam in two parts.
[0058]
In addition, the shape or structure of each part shown in the above-described embodiment is merely an example of the embodiment performed when the present invention is carried out, and the technical scope of the present invention is limited by these. It should not be interpreted in a general way.
[0059]
【The invention's effect】
As is apparent from the above description, the vehicle headlamp of the present invention includes a lamp body having a concave portion opened to the front, The Lamp body A bracket supported so as to be tiltable up and down and left and right inside, In the lamp body Sandwich the bracket above It was placed side by side above and supported the light source. , Consisting of independent members With two reflectors, the lower reflector is By the vertical support provided on the bracket Can be rotated horizontally Supported A passing beam is formed by the upper reflector and the light source supported by the reflector, and the upper reflector is Below the light source mounting position It is characterized by not having a part.
[0060]
Therefore, in the vehicle headlamp of the present invention, the reflector positioned on the upper side is Below the light source mounting position Since there is no part, there is no part that does not affect the light distribution, and the lower reflector can be placed in the missing part, thereby reducing the vertical size of the vehicle headlamp it can.
[0061]
In the invention described in claim 2, since the upper reflector is disposed rearward of the lower reflector, the front face can correspond to a headlamp inclined forward and lower, It is possible to dispose a drive unit for rotating the reflector behind the lower reflector.
[0062]
In the invention described in claim 3, a drive unit having a rotation shaft is disposed below the lower reflector, the rotation shaft of the drive unit is connected to the lower surface of the lower reflector, and Since the lower reflector is rotated in the horizontal direction by rotating the rotating shaft, there is no extra member between the upper and lower reflectors, and the gap between the two reflectors can be reduced.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a vehicle headlamp according to the present invention together with FIGS. 2 and 3, and is a longitudinal sectional view.
FIG. 2 is an exploded perspective view of a main part.
FIG. 3 is a cross-sectional view showing an interval adjustment portion and a rotation fulcrum portion.
FIG. 4 is a schematic front view of a reflector for explaining a portion of the main reflector (upper reflector) that does not affect light distribution.
FIG. 5 is an enlarged perspective view of a shade.
FIG. 6 shows a second embodiment of the vehicle headlamp of the present invention together with FIGS. 7 to 9, and this figure is a longitudinal sectional view.
FIG. 7 is an exploded perspective view of a main part.
8A and 8B show an upper rotation support portion of a sub-reflector (lower reflector). FIG. 8A is a longitudinal sectional view, and FIG. 8B is an exploded perspective view.
FIGS. 9A and 9B show a lower rotation support portion of a sub-reflector (lower reflector). FIG. 9A is a longitudinal sectional view, and FIG. 9B is an exploded perspective view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle headlamp, 2 ... Recessed part, 2a ... Opening surface, 3 ... Lamp body, 13 ... Main reflector (upper reflector), 16 ... Light source bulb (light source), 19 ... Sub-reflector (lower reflector) 20 ... light source bulb (light source), 30 ... vehicle headlamp, 31 ... recess, 31a ... opening surface, 32 ... lamp body, 41 ... main reflector (upper reflector), 45 ... light source bulb (light source), 47 ... Sub-reflector (lower reflector), 51 ... Light source bulb (light source)

Claims (3)

A lamp body having a recess open to the front;
A bracket supported to be able to tilt up and down, left and right in the lamp body;
And Te in the lamp body supports the respective light source while being arranged on the upper and lower sides of the above bracket, and two reflectors made of mutually independent members,
Lower reflector is rotatably supported in a horizontal direction by the vertical supporting portion provided on the bracket,
A vehicular headlamp characterized in that a passing beam is formed by an upper reflector and a light source supported by the reflector, and the upper reflector does not have a portion below the light source mounting position . The vehicle headlamp according to claim 1, wherein the upper reflector is disposed rearward of the lower reflector. A drive unit having a rotation shaft is disposed below the lower reflector, and the rotation shaft of the drive unit is connected to the lower surface of the lower reflector,
The vehicular headlamp according to claim 1 or 2, wherein the lower reflector is rotated in a horizontal direction by rotating a rotation shaft of the drive unit.

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