KR20160012543A - Head lamp for vehicles - Google Patents

Abstract

A headlamp for a vehicle is provided. A headlamp for a vehicle according to an embodiment of the present invention includes: a lens portion disposed on an optical axis extending in a longitudinal direction of the vehicle; A light source unit disposed behind the focus of the lens unit; A reflector unit for reflecting the light of the light source unit forward; A shade portion having a fixed shade located in a first region and a movable shade opening and closing a second region; And a driving unit for moving the moving shade according to the rotation of the rotating shaft to open and close the second area, wherein a connecting portion extending from both sides of the moving shade is engaged with both ends of the rotating shaft.

Description

[0001] The present invention relates to a head lamp for vehicles,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a headlamp for a vehicle, and more particularly, to a headlamp for a vehicle for improving the assemblability of a lamp and forming a good light distribution pattern.

Generally, a vehicle is equipped with a variety of vehicle lamps having a lighting function and a signal function for notifying other vehicle users or other road users of the traveling state of the vehicle so that an object located in the vicinity of the vehicle can be easily identified at night when traveling .

For example, a headlamp that irradiates light ahead to secure the driver's view, a brake that lights when the brake is applied, and a device that operates in a manner of direct light emission using a lamp, such as a turn signal used when turning clockwise or counterclockwise And a reflector functioning in a manner of reflecting light so that the vehicle can be easily recognized from the outside is mounted on the front and rear of the vehicle. In addition, such vehicle lamps are prescribed by laws and regulations on installation standards and specifications so that each function can be fully utilized.

A vehicle headlamp that forms a low-beam distribution pattern or a high-beam distribution pattern so as to ensure a front view of the driver during nighttime driving of such a vehicle lamp plays a very important role in safety operation.

On the other hand, in the case of a headlamp for a vehicle that simultaneously implements a low beam distribution pattern and a high beam distribution pattern, the structure becomes complicated, making it difficult to manufacture and assemble the lamp, and the manufacturing cost of the lamp is increasing.

Therefore, development of a technique capable of improving the assembling property of the lamp and forming a good light distribution pattern is required.

U.S. Patent Application Publication No. US2012-0135886 (2013.05.30)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle headlamp capable of improving the assembling performance of a lamp and forming a good light distribution pattern.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a vehicular headlamp including: a lens unit disposed on an optical axis extending in a longitudinal direction of the vehicle; A light source unit disposed behind the focus of the lens unit; A reflector unit for reflecting the light of the light source unit forward; A shade portion having a fixed shade located in a first region and a movable shade opening and closing a second region; And a driving unit for moving the moving shade according to the rotation of the rotating shaft to open and close the second area, wherein a connecting portion extending from both sides of the moving shade is engaged with both ends of the rotating shaft.

In addition, the coupling member may include a plurality of coupling holes into which one end and the other end of the rotation shaft are inserted and coupled, respectively.

The apparatus may further include a fixing ring coupled to at least one of the one end and the other end of the rotation shaft inserted in the plurality of coupling holes to fix the coupling member to the rotation shaft.

Further, the engaging member may include a stationary ring recess disposed around the engaging hole and to which the stationary ring is coupled.

Further, the rotation shaft may include a rotation shaft recess to which the stationary ring is coupled.

The coupling member may include a coupling recess through which one end of the rotation shaft is coupled and a coupling hole through which the other end of the rotation shaft passes.

The apparatus may further include a fixing ring coupled to the other end of the rotation shaft passing through the coupling hole to fix the coupling member to the rotation shaft.

Further, the engaging member may include a stationary ring recess disposed around the engaging hole and to which the stationary ring is coupled.

Further, the rotation shaft may include a rotation shaft recess to which the stationary ring is coupled.

In addition, the coupling member may be extended at different angles with respect to the optical axis at both sides of the moving shade.

The second region may be a region extending rearward from the front end center portion of the shade portion.

Further, the moving shade may be rotated forward of the shade portion to open the second region.

The light transmitted through the lens section shields a part of the light reflected by the reflector section when the second area is shielded, thereby forming a low beam light distribution pattern having a cutoff line. The second area open high beam distribution pattern Can be formed.

Further, the shade portion may form a reflection layer on the upper surface to reflect the light reflected by the reflector back to the lens portion.

Other specific details of the invention are included in the detailed description and drawings.

According to the vehicle headlamp of the present invention as described above, one or more of the following effects can be obtained.

According to the present invention, it is possible to improve the assembling property of the lamp and to form a good light distribution pattern.

1 is a perspective view of a vehicle headlamp according to an embodiment of the present invention.
2 is an exploded perspective view of a part of a headlamp for a vehicle according to an embodiment of the present invention.
3 is a plan view of a part of a headlamp for a vehicle according to an embodiment of the present invention.
FIGS. 4 to 7 are views showing a combination of a driving part and a connecting part according to an embodiment of the present invention.
8 is a schematic view showing a driving unit and a coupling member according to another embodiment of the present invention.
9 is an exploded perspective view of a part of a headlamp for a vehicle according to another embodiment of the present invention.
10 is a right side view of a vehicle headlamp according to an embodiment of the present invention.
11 is a schematic view showing a light path in forming a low beam light distribution pattern by a vehicle headlamp according to an embodiment of the present invention.
12 is a view showing a low beam light distribution pattern formed by a vehicle headlamp according to an embodiment of the present invention.
13 is an operation diagram of a vehicle headlamp according to an embodiment of the present invention.
14 is a schematic view showing a light path in forming a high beam distribution pattern by a headlamp for a vehicle according to an embodiment of the present invention.
15 is a diagram showing a high beam distribution pattern formed by a vehicle headlamp according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view of a vehicle headlamp according to an embodiment of the present invention.

1, a vehicle headlamp 10 according to an embodiment of the present invention includes a light source unit 100, a reflector unit 200, a shade unit 300, a lens unit 400, and a driver 500 One does not exclude additional configurations.

In the present invention, the vehicle headlamp 10 means a headlamp, but is not limited thereto. In the present invention, the vehicle headlamp 10 refers to a lamp provided on the left or right side of the vehicle. The headlamp for the other vehicle, which is not described in the present invention, has the same configuration as the headlamp 10 for a vehicle of the present invention Or it may be understood to have a symmetrical configuration.

The light source unit 100 is disposed behind the focus of the lens unit 400 disposed on the optical axis Ax extending in the longitudinal direction of the vehicle.

The light sources 110 and 120 of the light source unit 100 are installed on the upper surface of a support plate (not shown) to emit light in the upward direction, emit light in a downward direction, Emitting Diode) or bulb may be used.

Here, the light emitting diode is a semiconductor device that converts current into direct light by using a phenomenon in which electrons in the n region meet the pores of the p region to cause recombination light emission when a voltage is applied in the forward direction using the p-n junction of the semiconductor.

Generally, a white light emitting diode having a single light emitting chip is used, but the present invention is not limited thereto.

Also, the light sources 110 and 120 may be tilted at a predetermined angle to the upper side or the lower side of the vehicle. Accordingly, the leakage light can be reduced, and the efficiency of the light reflected by the reflectors 210 and 220 (described later) and irradiated to the front of the vehicle can be increased. However, the predetermined angle is not limited as long as the efficiency of light can be increased.

The light sources 110 and 120 may be a high-brightness light emitting diode or a multi-chip LED package. Therefore, the amount of light can be increased as compared with a general light emitting diode.

However, the types and installation forms of the light sources 110 and 120 of the light source unit 100 include all types and installation forms that can be easily adopted by the ordinary artisan in the technical field of the present invention.

The reflector unit 200 can reflect the light emitted from the light source unit 100 forward. Each of the reflectors 210 and 220 of the reflector unit 200 may be disposed above or below each of the light sources 110 and 120 of the light source unit 100 to reflect light emitted from the light sources 110 and 120 And the light sources 110 and 120 may be arranged in the vicinity of the first focus or the first focus of the reflectors 210 and 220, respectively.

In the embodiment of the present invention, the reflectors 210 and 220 are disposed on the upper side or the lower side of the light sources 110 and 120 so that the entire reflectors 210 and 220 are disposed above or below the light sources 110 and 120 A part of the reflectors 210 and 220 may be disposed on the upper side or the lower side of the light sources 110 and 120.

Although the light sources 110 and 120 of the light source unit 100 and the reflectors 210 and 220 of the reflector unit 200 are shown as two in the embodiment of the present invention, the light sources 110 and 120 and the reflector 210 and 220 may be variously changed and the light sources 110 and 120 and the reflectors 210 and 220 are located on the upper and lower sides of the support plate. The positions of the light sources 110 and 120 and the reflectors 210 and 220 may be variously changed.

The upper surface of the shade portion 300 is formed in a flat plate shape and may be positioned on the optical axis Ax and may be formed of a light reflecting member A cutoff line CL is formed on the light distribution pattern.

In this case, the shade unit 300 may be formed in a plate shape having a semicircular groove at one end thereof, and may shield the reflected light from the reflector unit 200 so as to form a cutoff line CL corresponding to the beam pattern. At least a part of the surface of the groove may have a step, but the shape and the step of the groove may be variously changed.

Here, the cutoff line CL formed on the light distribution pattern can prevent the glare of the opposed vehicle driver.

In the embodiment of the present invention, the upper surface of the shade portion 300 may simply block the light emitted from the light source portion 100 and reflected by the reflector portion 200, but in this case, since the light efficiency is reduced, 300 so that at least a part of the upper surface of the shade portion 300 can reflect the light reflected by the reflector portion 200 again. The metal coating layer may be formed of, for example, a chromium coating, an aluminum coating, or a metal oxide layer. The metal coating layer may be formed by a method such as spin coating, spray coating, sputtering, vacuum deposition, .

In addition, the shade unit 300 includes a fixed shade 310 positioned in a first area and a moving shade 320 opening and closing a second area adjacent to the first area

Accordingly, when the second area is shielded because the mobile shade 320 does not move, the low beam light distribution pattern PL can be formed as described below. When the mobile shade 320 moves and the second area is opened and closed The low beam light distribution pattern PL and the high beam light distribution pattern PH can be simultaneously realized by one vehicle headlamp 10 while the second area is opened and closed Only the moving shade 320 is moved to reduce leakage light, thereby improving light efficiency.

In addition, the second region may be a region extending rearward from the front end center portion of the shade portion 300, and the first region may be a region other than the second region in the shade portion 300.

That is, the second area may be disposed at a position where the light passing through the second area forms the cutoff line CL on the light distribution pattern.

At this time, the movable shade 320 may be rotated forward to open the second area based on the rotation axis of the driving unit 500, which will be described later, of the shade unit 300. However, if the second area can be opened and closed, The direction and rotation angle are not limited.

Accordingly, as the light passing through the second area is distributed to the vicinity of the cutoff line CL, the low beam light distribution pattern PL or the high beam light distribution pattern PH is selected according to the driver's choice as the second area is opened or closed. .

A more detailed description of the shade portion 300 will be described later.

The lens unit 400 includes a lens 410 and a lens holder 420, but does not exclude other additional components.

The lens 410 projects the light reflected by the reflector unit 200 irradiated from the light source unit 100 toward the front of the vehicle, and may include an aspherical lens. In an embodiment of the present invention, the light transmitted through the lens unit 400 may be emitted to the outside of the vehicle to realize a downward light (low beam light distribution pattern, PL) or the like.

However, the size, material, refractive index, etc. of the lens 410 are not limited as long as the light reflected by the reflector unit 200 or reflected by the shade unit 300 can be projected toward the front of the vehicle.

Also, in the embodiment of the present invention, the light emitted from the light source unit 100 is reflected by the reflector unit 200 and transmitted to the front of the lens unit 400.

At this time, the position of the light source unit 100 is fixed, and the direction in which the light is transmitted is constant. However, in order to adjust the irradiation direction of the light upward or downward or right and left according to the design intention, The entire lamp 10 may be arranged to be inclined at a predetermined angle.

The lens holder 420 is formed in a hollow structure so that the light generated in the headlamp 10 for a vehicle can be distributed to the outside through the lens 410 and the lens 410 is coupled to the lens 410 ). ≪ / RTI >

At this time, the lens holder 420 may be bonded or screwed to the lens 410 or the like by a method that can be easily combined by a person skilled in the art.

However, if the lens holder 420 can support the lens 410, the coupling position and the coupling method of the lens holder 420 and the lens 410 are not limited.

The driving unit 500 includes rotating shafts 510 and 520 and is connected to the moving shade 320 to move the moving shade 320 according to the rotation of the rotating shaft to open and close the second area.

For example, as the rotary shaft rotates in one direction, the movable shade 320 moves in one direction to expose the second area, and as the rotary shaft rotates in the other direction, the movable shade 320 moves in the other direction Thereby shielding the second region.

Here, the driving unit 500 is a device that converts electrical energy into mechanical one using the force that the current receives in the magnetic field. In one embodiment of the present invention, the driving unit 500 provides a rotational force to rotate the movable shade 320 do.

Accordingly, both the high beam distribution pattern PH and the low beam distribution pattern PL can be implemented through the rotational force provided by the driving unit 500 during the operation of the driver.

However, if the mobile shade 320 can be moved to open and close the second area, the driving unit 500 may include all the structures that can be employed by a typical technician.

FIG. 2 is an exploded perspective view of a part of a headlamp for a vehicle according to an embodiment of the present invention, and FIG. 3 is a plan view of a part of a headlamp for a vehicle according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the moving shade 320 includes connecting portions 330 and 340 extending from both sides to engage with the driving portion 500. At this time, the coupling members 330 and 340 extending from both sides of the mobile shade 320 to the lower end may be coupled with both ends 510 and 520 of the rotation shaft.

Accordingly, the movable shade 320 rotates in accordance with the rotation of the rotation shaft to open / close the second area.

However, the directions of the engaging members 330 and 340 extending from both sides of the moving shade 320 are not limited as long as the second region can be opened and closed according to the rotation of the rotating shaft.

The coupling members 330 and 340 may include a plurality of coupling holes 332 and 342 into which the one end and the other ends 510 and 520 of the rotation shaft are inserted.

In this case, a fixing ring (not shown) is coupled to at least one of the one end 520 and the other end 510 of the rotation shaft inserted into the plurality of coupling holes 332 and 342 to fix the coupling members 330 and 340 to the rotation shaft. (600).

Therefore, the coupling force of the movable shade 320 with respect to the rotational axis of the driving unit 500 can be improved.

The engaging members 330 and 340 may include a stationary ring recess 344 disposed around the engaging hole 342 to which the stationary ring 600 is coupled.

Accordingly, not only the space in which the stationary ring 600 is disposed can be reduced, space efficiency can be improved, and the coupling force between the rotating shaft of the driving unit 500 and the moving shade 320 can be improved through the stationary ring 600.

The size and shape of the plurality of engaging holes 332 and 342, the stationary ring 600 and the stationary ring recess 344 can be increased if the engaging force of the movable shade 320 with respect to the rotational axis of the driving unit 500 can be improved. Etc. are not limited.

FIGS. 4 to 7 are views showing a combination of a driving part and a connecting part according to an embodiment of the present invention.

The engaging members 330 and 340 may be extended at different angles with respect to the optical axis Ax on both sides of the moving shade 320. For example, one of the coupling members 340 may be parallel to the optical axis Ax and the other 330 may be at an angle with the optical axis Ax.

Hereinafter, the coupling between the driving unit 500 and the coupling members 330 and 340 will be described in detail.

First, one end 510 of the rotary shaft is positioned adjacent to one of the coupling members 330 as shown in FIG. 5, one end 510 of the rotation shaft is inserted into a coupling hole 332 provided in one of the coupling members 330, and the other end 520 of the rotation shaft is inserted into the coupling hole 332 And then the other end 520 of the rotation shaft is passed through the other one of the coupling members 340 as shown in FIG.

At this time, the fixing ring 600 is coupled to the other end 520 of the rotation shaft exposed through the other one of the coupling members 340 to couple the driving unit 500 and the coupling members 330 and 340.

In addition, the driving unit 500 and the coupling members 330 and 340 coupled in the reverse order to the above can be disassembled.

Therefore, since the coupling members 330 and 340 are extended at different angles with respect to the optical axis Ax on both sides of the moving shade 320, the driving unit 500 and the coupling members 330 and 340 can be easily attached and detached .

However, if the driving unit 500 and the coupling members 330 and 340 are easy to attach and detach, the different angles are not limited.

8 is a schematic view showing a driving unit and a coupling member according to another embodiment of the present invention.

Referring to FIG. 8, the coupling members 330 and 340 according to another embodiment of the present invention include coupling recesses 348 to which one end 520 of the rotation shaft is coupled, Hole 338. In this embodiment,

The fixing member 600 further includes a fixing ring 600 coupled to the other end 510 of the rotary shaft through the coupling hole 338 to fix the coupling members 330 and 340 to the rotary shafts 510 and 520, 330 and 340 may include a fixing ring recess 336 disposed around the coupling hole 338 to which the fixing ring 600 is coupled.

Therefore, it is possible not only to improve the coupling force of the movable shade 320 with respect to the rotation axis of the driving unit 500, but also to reduce the coupling space and to improve the space efficiency. Further, through the coupling recess 348, The engagement of the engaging members 330 and 340 with the driving unit 500 through one fixing ring 600 can be further strengthened by preventing the one end 520 from being exposed to the outside.

4 to 6 when the driving unit 500 and the coupling members 330 and 340 are coupled to each other after the other one of the coupling members 340 is the coupling recess 348, The fixing ring 600 may be coupled to the other end 510 of the rotation shaft exposed to the outside of the coupling hole 338. However, the position of the coupling hole 338 and the coupling recess 348 may be changed without being limited thereto.

9 is an exploded perspective view of a part of a headlamp for a vehicle according to another embodiment of the present invention.

At least one of the rotating shafts 510 and 520 of the driving unit 500 according to another embodiment of the present invention includes a rotating shaft recess 522 to which the stationary ring 600 is coupled can do. At this time, the shape of the rotary shaft recess 522 may correspond to the shape of the stationary ring 600.

Therefore, the engagement position of the stationary ring 600 can be adjusted, and stable engagement between the engagement members 320 and 340 and the rotation shafts 510 and 520 is possible.

However, the size and position of the rotary shaft recess 522 are not limited as long as the stationary ring 600 can be engaged.

FIG. 10 is a right side view of a vehicle headlamp according to an embodiment of the present invention, FIG. 11 is a schematic view showing a light path in forming a low beam light distribution pattern by a vehicle headlamp according to an embodiment of the present invention, 12 is a view showing a low beam light distribution pattern formed by a vehicle headlamp according to an embodiment of the present invention.

10 to 12, when the rotational force of the driving unit 500 is not provided or the rotating shaft rotates in the other direction so that the moving shade 320 shields the second area, the area around the cut-off line CL on the light distribution pattern It is possible to form the low beam light distribution pattern PL.

At this time, a reflective layer is formed on the upper surfaces of the fixed shade 310 and the movable shade 320 to improve light efficiency.

Therefore, by forming the cutoff line CL, the glare of the opposed vehicle driver can be prevented and a light distribution pattern that satisfies the regulations can be formed.

FIG. 13 is an operation diagram of a vehicle headlamp according to an embodiment of the present invention, FIG. 14 is a schematic view showing a light path when a high beam distribution pattern is formed by a vehicle headlamp according to an embodiment of the present invention, 15 is a view showing a high beam distribution pattern formed by a vehicle headlamp according to an embodiment of the present invention.

13 to 15, the driving unit 500 separates the moving shade 320 from the second area through the coupling members 330 and 340 connected to the rotating shaft, thereby forming the cut-off line PL in the low beam light distribution pattern PL. Beam light distribution pattern PA passing through the vicinity of the high-beam light distribution pattern CL can be reinforced to form the high-beam light distribution pattern PH.

At this time, a reflective layer may be formed on the upper surface of the fixed shade 310 to improve the light efficiency by reusing the leaked light.

Therefore, the visibility of the driver to the far side of the vehicle can be improved when there is no opposite side.

That is, according to the present invention, various light distribution patterns desired by the driver can be formed through the high beam distribution pattern PH as well as the low beam distribution pattern PL.

However, the light distribution pattern implemented through the vehicle headlamp 10 according to the embodiment of the present invention is not limited thereto, and all the light distribution patterns that can be implemented by a typical engineer can be implemented.

Further, according to the present invention, it is possible to improve the assemblability of the headlamp 10 for a vehicle, thereby facilitating the manufacture of the lamp and reducing the manufacturing cost of the lamp.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: Car headlamp
100:
200: Reflector part
300: Shade portion
400:
500:
600: Retaining ring

Claims (14)

A lens portion disposed on an optical axis extending in a longitudinal direction of the vehicle;
A light source unit disposed behind the focus of the lens unit;
A reflector unit for reflecting the light of the light source unit forward;
A shade portion having a fixed shade located in a first region and a movable shade opening and closing a second region; And
And a driving unit that moves the moving shade according to the rotation of the rotating shaft to open and close the second area,
And a connecting portion extending from both sides of the moving shade is engaged with both ends of the rotating shaft. The method according to claim 1,
The coupling member
And a plurality of engagement holes into which the one end and the other end of the rotation shaft are inserted and coupled, respectively. 3. The method of claim 2,
And a fixing ring coupled to at least one of the one end and the other end of the rotation shaft inserted in the plurality of coupling holes to fix the coupling member to the rotation shaft. The method of claim 3,
The coupling member
And a stationary ring recess disposed around the engaging hole and to which the stationary ring is engaged. The method of claim 3,
The rotation shaft
And a rotating shaft recess to which the stationary ring is coupled. The method according to claim 1,
The coupling member
And a coupling hole through which one end of the rotation shaft is engaged and a coupling hole through which the other end of the rotation shaft passes. The method according to claim 6,
And a fixing ring coupled to the other end of the rotation shaft passing through the coupling hole to fix the coupling member to the rotation shaft. 8. The method of claim 7,
The coupling member
And a stationary ring recess disposed around the engaging hole and to which the stationary ring is engaged. 8. The method of claim 7,
The rotation shaft
And a rotating shaft recess to which the stationary ring is coupled. The method according to claim 1,
The coupling member
Wherein the movable shade is extended at different angles with respect to the optical axis at both sides of the movable shade. The method according to claim 1,
Wherein the second region comprises:
And is a region extending rearward from a front end center portion of the shade portion. The method according to claim 1,
The mobile shade includes:
And rotates forward of the shade portion to open the second region. The method according to claim 1,
Wherein the light transmitted through the lens portion
Forming a low beam light distribution pattern including a cut-off line by blocking a part of the light reflected by the reflector part when the second area is shielded,
And forms a high beam distribution pattern when the second region is opened. The method according to claim 1,
The shade portion
And a reflecting layer is formed on the upper surface to reflect the light reflected by the reflector back to the lens portion.

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