Vehicle lamp module and vehicle lamp including the lamp module

Abstract

To make it possible to share one light-emitting surface even when lamps having different functions are lit, thereby achieving differentiation in terms of vehicle design.SOLUTION: A lamp module 20 for a vehicle includes a plurality of light sources 100 for forming two or more kinds of light distribution patterns, and a light guide part 200 provided on one side of the plurality of light sources. The light sources 100 include a first light source 110 provided behind the light guide part 200 to face a rear surface portion 220 of the light guide part 200, and a second light source 120 provided on the lower side of the light guide part 200 to face a lower surface portion 240 of the light guide part 200. At least part of the light emitted from the first light source 110 passes through the rear surface portion 220 of the light guide part 200, is then emitted to the outside to form a first light distribution pattern. At least part of the light emitted from the second light source 120 is reflected by the lower surface portion 240 of the light guide part 200, is then emitted to the outside to form a second light distribution pattern.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle lamp module and a vehicle lamp including the lamp module. [Background technology]

[0002] Vehicles are equipped with various types of vehicle lamps depending on their functions, such as low beam lamps, high beam lamps, and DRL (Daytime Running Light) lamps at the front of the vehicle.

[0003] According to the prior art, since various lamps are installed in a vehicle, the light-emitting surfaces formed by each lamp are different from each other, and there is a problem that the design of the vehicle cannot meet the needs of consumers when the lamps are turned on.

[0004] Furthermore, in the prior art, when various lamps are installed in a vehicle, the lamps take up too much space in the vehicle. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the problem to be solved by the present invention is to make one vehicle lamp perform two or more functions, so that even when lamps with different functions are turned on, one light-emitting surface can be shared, thereby differentiating the vehicle design. [Means for solving the problem]

[0006] According to one aspect of the present invention for achieving the above object, there is disclosed a vehicle lamp module including: a plurality of light sources for forming two or more light distribution patterns; and a light guide provided on one side of the plurality of light sources, the light sources including a first light source provided behind the light guide to face a rear surface of the light guide; and a second light source provided below the light guide to face a bottom surface of the light guide; wherein at least a portion of the light emitted from the first light source passes through the rear surface of the light guide and is then emitted to the outside to form a first light distribution pattern; and at least a portion of the light emitted from the second light source is reflected by the bottom surface of the light guide and is then emitted to the outside to form a second light distribution pattern.

[0007] The lower surface of the light guide may include a first recessed area having an upwardly recessed shape, and the second light source may be provided within a width of the first recessed area in a front-rear direction.

[0008] The first recessed region includes a first surface provided in a rear region of the first recessed region and a second surface provided in a front region of the first recessed region, and the first surface and the second surface meet at an upper end of the first recessed region.

[0009] The second light source may be provided within a width of the first surface in the front-rear direction.

[0010] When the first recessed region is cut horizontally, the first surface may have a linear shape or a backward-concave parabolic shape.

[0011] A reflective layer may be formed on the first surface.

[0012] The first recessed region may further include a cut-off portion having a stepped shape and provided at an upper end of the first recessed region where the first surface and the second surface meet.

[0013] The rear surface of the light guide may have a curved shape that protrudes convexly toward the first light source.

[0014] The front surface of the light guide may include a first curved region having a curved shape that protrudes convexly toward the front of the light guide, and a second curved region provided on an upper portion of the first curved region and having a curved shape that protrudes convexly toward the front.

[0015] The first curved surface area and the second curved surface area may have aspherical lens shapes with different radii of curvature.

[0016] The radius of curvature of the second curved region may be greater than the radius of curvature of the first curved region near a region where the first curved region and the second curved region contact each other.

[0017] The first light distribution pattern can be formed by light emitted from the first light source that passes through the first curved area, and the second light distribution pattern can be formed by light emitted from the second light source that passes through the second curved area.

[0018] The front surface of the light guide may further include a second recessed area provided below the first curved area and having an upwardly recessed shape.

[0019] The light emitting device may further include a first substrate to which the first light source is bonded, a second substrate to which the second light source is bonded, and a heat sink provided in close contact with the first substrate and the second substrate.

[0020] The heat sink may have an area to which the first substrate is bonded and an area to which the second substrate is bonded formed integrally.

[0021] According to another aspect of the present invention for achieving the above object, there is provided a vehicle lamp including a plurality of vehicle lamp modules, the vehicle lamp module including a plurality of light sources for forming two or more light distribution patterns, and a light guiding section provided on one side of the plurality of light sources, the light sources including a first light source provided behind the light guiding section to face a rear surface of the light guiding section, and a second light source provided below the light guiding section to face a bottom surface of the light guiding section, at least a portion of the light emitted from the first light source passes through the rear surface of the light guiding section and is then emitted to the outside, forming a first light distribution pattern, and at least a portion of the light emitted from the second light source is reflected by the bottom surface of the light guiding section and is then emitted to the outside, forming a second light distribution pattern.

[0022] The lamp assembly may include a plurality of upper lamp modules provided at an upper portion and arranged horizontally, and a plurality of lower lamp modules provided below the upper lamp modules and arranged horizontally, and the front shape of the light guide part provided in the upper lamp modules may be different from the front shape of the light guide part provided in the lower lamp modules.

[0023] The front surface of the light guide unit includes a first curved region having a curved shape that protrudes convexly toward the front of the light guide unit, a second curved region provided on an upper portion of the first curved region and having a curved shape that protrudes convexly toward the front, and a second recessed region provided on a lower portion of the first curved region and having a shape that is recessed upward, and the second recessed region may be provided only in the plurality of lower lamp modules.

[0024] The first light distribution pattern may be a low beam pattern, and the second light distribution pattern may be a DRL pattern. [Effects of the Invention]

[0025] According to the present invention, by making it possible for one vehicle lamp to perform two or more functions, it is possible to share one light-emitting surface even when lamps with different functions are turned on, thereby enabling differentiation in terms of vehicle design. [Brief explanation of the drawings]

[0026] [Figure 1] 3 is a side view illustrating the vehicle lamp module according to the present invention when the first light source is turned on. FIG. [Figure 2] 4 is a side view illustrating the vehicle lamp module according to the present invention when the second light source is turned on. FIG. [Figure 3] 2 is a perspective view illustrating a light guide unit provided in a vehicle lamp module according to an embodiment of the present invention; FIG. [Figure 4] 2 is a side view illustrating a light guide unit provided in the vehicle lamp module according to an embodiment of the present invention; FIG. [Figure 5] 10 is a perspective view illustrating a light guide unit provided in a vehicle lamp module according to another embodiment of the present invention; FIG. [Figure 6] 10 is a side view illustrating a light guide unit provided in a vehicle lamp module according to another embodiment of the present invention; FIG. [Figure 7] 1 is a perspective view illustrating a plurality of light guide units provided in a vehicle lamp according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle lamp module and a vehicle lamp according to the present invention will now be described with reference to the drawings.

[0028] [Vehicle lamp module] FIG. 1 is a side view illustrating the state when a first light source is turned on in a vehicle lamp module according to the present invention, and FIG. 2 is a side view illustrating the state when a second light source is turned on in a vehicle lamp module according to the present invention.

[0029] The vehicle lamp module 20 (hereinafter referred to as "lamp module") according to the present invention may be a lamp module capable of forming two or more types of light distribution patterns. That is, the lamp module 20 according to the present invention may separately form a first light distribution pattern and a second light distribution pattern different from the first light distribution pattern. As an example, the first light distribution pattern may be a low beam pattern, and the second light distribution pattern may be a DRL pattern. However, the types of the first light distribution pattern and the second light distribution pattern are not limited to those described above, and may be applied to various beam patterns.

[0030] The lamp module 20 according to the present invention may include a plurality of light sources 100 for forming two or more light distribution patterns, and a light guide 200 provided on one side of the plurality of light sources 100 and facing the plurality of light sources 100. The light guide 200 may be a lens.

[0031] The light guide unit 200 may be divided into multiple regions depending on their positions. More specifically, the light guide unit 200 may include a front surface portion 210 forming a front region of the light guide unit, a rear surface portion 220 forming a rear region of the light guide unit, an upper surface portion 230 forming an upper region of the light guide unit, and a lower surface portion 240 forming a lower region of the light guide unit.

[0032] The light source 100 may include a first light source 110 provided at the rear of the light guide unit 200 to face the rear surface 220 of the light guide unit, and a second light source 120 provided at the bottom of the light guide unit 200 to face the bottom surface 240 of the light guide unit. As an example, the first light source 110 and the second light source 120 may be LEDs, but the types of the light sources are not limited to those described above. Meanwhile, the second light distribution pattern may be formed above the first light distribution pattern.

[0033] According to the present invention, at least a portion of light emitted from the first light source 110 passes through the rear surface 220 of the light guiding unit 200 and is then emitted to the outside, thereby forming a first light distribution pattern, and at least a portion of light emitted from the second light source 120 is reflected by the bottom surface 240 of the light guiding unit 200 and is then emitted to the outside, thereby forming a second light distribution pattern. Fig. 1 illustrates how light emitted from the first light source 110 passes through the rear surface 220 of the light guiding unit 200 and is then emitted to the front surface 210, thereby forming the first light distribution pattern, and Fig. 2 illustrates how light emitted from the second light source 120 is reflected by the bottom surface 240 of the light guiding unit 200 and is then emitted to the front surface 210, thereby forming the second light distribution pattern.

[0034] Meanwhile, the lamp module 20 according to the present invention may further include a collimator 150 provided between the first light source 110 and the light guiding unit 200. The collimator 150 may convert the light emitted from the first light source 110 into parallel light and then supply the parallel light to the light guiding unit 200. Meanwhile, the collimator 150 may not be provided between the second light source 120 and the light guiding unit 200, and only an empty space may be formed.

[0035] 1 and 2, the lower surface 240 of the light guide unit 200 may include a first recessed region 242 having an upwardly recessed shape. In this case, the second light source 120 may be provided within the width of the first recessed region 242 in the front-rear direction.

[0036] More preferably, the first recessed region 242 may include a first surface 242a provided in a rear region of the first recessed region 242 and a second surface 242b provided in a front region of the first recessed region 242, and the second light source 120 may be provided within the width of the first surface 242a in the front-rear direction. Therefore, most of the light emitted from the second light source 120 may reach the first surface 242a.

[0037] Meanwhile, a reflective layer may be formed on the surface of the first surface 242a. Therefore, according to the present invention, light emitted from the second light source 120 and reaching the first surface 242a is reflected by the reflective layer formed on the first surface 242a and then travels to the front surface 210 of the light guide unit 200. To this end, the first surface 242a may have a shape that extends obliquely from the lower rear side to the upper front side of the lamp module 20.

[0038] Meanwhile, the first surface 242a and the second surface 242b may contact each other at an upper end of the first recessed region 242. More specifically, the first recessed region 242 may further include a cut-off portion 242c having a stepped shape and provided at an upper end of the first recessed region 242 where the first surface 242a and the second surface 242b contact each other. As described above, the first light distribution pattern formed by the first light source 110 may be a low beam pattern, and the cut-off portion 242c may be configured to form a cut-off line that is required by law to be formed in an upper region of the low beam pattern. That is, according to the present invention, a low beam pattern with a cut-off line may be formed by blocking a portion of the light emitted from the first light source 110 by the cut-off portion 242c.

[0039] 1 and 2, when the first recessed region 242 provided in the lamp module 20 according to the present invention is cut horizontally, the first surface 242a may have a linear shape or a backward-concave parabolic shape. This may be to ensure a reflection angle at which light emitted from the second light source 120 and reflected by the first surface 242a can reach the front surface 210 of the light guide unit 200. As described above, the second light distribution pattern formed by the second light source 120 may be a DRL pattern. However, when the cross section of the first surface 242a has a backward-concave parabolic shape, the light emitted from the second light source 120 and reflected by the first surface 242a can be concentrated when it reaches the front surface 210 of the light guide unit 200, thereby increasing the overall light efficiency of the lamp module 20.

[0040] 1 and 2, the rear surface 220 of the light-guiding unit 200 may have a curved shape that protrudes convexly toward the first light source 110. Therefore, the light emitted from the first light source 110 and converted into parallel light by the collimator 150 may be condensed while passing through the rear surface 220.

[0041] FIG. 3 is a perspective view illustrating a light guide unit provided in a vehicle lamp module according to an embodiment of the present invention, and FIG. 4 is a side view illustrating a light guide unit provided in a vehicle lamp module according to an embodiment of the present invention.

[0042] According to the present invention, unlike the rear surface 220 of the light guide unit 200 having a single curved shape, the front surface 210 of the light guide unit 200 may be configured with a plurality of curved regions. More specifically, according to an embodiment of the present invention, the front surface 210 of the light guide unit 200 may include a first curved region 212 having a curved shape that protrudes convexly toward the front of the light guide unit 200, and a second curved region 214 provided on an upper portion of the first curved region 212 and having a curved shape that protrudes convexly toward the front. The first curved region 212 and the second curved region 214 may have different radii of curvature.

[0043] More preferably, the first curved region 212 and the second curved region 214 may have aspherical lens shapes having different radii of curvature. The first curved region 212 is a region where light emitted from the first light source 110 mainly reaches, and the light emitted from the first light source 110 may form a first light distribution pattern by passing through the first curved region 212. The second curved region 214 is a region where light emitted from the second light source 120 mainly reaches, and the light emitted from the second light source 120 may form a second light distribution pattern by passing through the second curved region 214.

[0044] More specifically, the radius of curvature of the second curved region 214 may be greater than the radius of curvature of the first curved region 212 near the region where the first curved region 212 and the second curved region 214 meet. In other words, it can be understood that the surface of the second curved region 214 has a shape closer to a plane than the surface of the first curved region 212 near the region where the first curved region 212 and the second curved region 214 meet. Therefore, as shown in Figures 3 and 4, a sharply protruding region may be formed in the region where the first curved region 212 and the second curved region 214 meet.

[0045] FIG. 5 is a perspective view illustrating a light guide unit provided in a vehicle lamp module according to another embodiment of the present invention, and FIG. 6 is a side view illustrating a light guide unit provided in a vehicle lamp module according to another embodiment of the present invention.

[0046] According to another embodiment of the present invention, the front surface 210 of the light guide unit 200 may further include a second recessed region 216 formed below the first curved region 212 and recessed upward, in addition to the first curved region 212 and the second curved region 213. That is, according to another embodiment of the present invention, an empty space may be formed in the lower region of the front surface 210 of the light guide unit 200 due to the second recessed region 216.

[0047] The second recessed region 216 may be configured to ensure the legally required amount of light so that the driver can at least recognize the presence of objects in the upper region of the low beam pattern when the first light source 110 is turned on to form the low beam pattern. That is, according to another embodiment of the present invention, at least a portion of the light emitted from the first light source and reaching the second recessed region 216 may reach the upper region of the first light distribution pattern. Meanwhile, the second recessed region 216 may be provided below the cutoff portion 242c.

[0048] Meanwhile, the lamp module 20 according to the present invention may further include a first substrate (not shown) to which the first light source 110 is bonded, a second substrate (not shown) to which the second light source 120 is bonded, and a heat sink 300 in which the first substrate and the second substrate are closely attached to each other. The heat sink 300 may be configured to cool the first light source 110 and the second light source 120. More specifically, according to the present invention, a region of the heat sink 300 to which the first substrate is bonded and a region to which the second substrate is bonded may be integrally formed. The heat sink 300 not only cools the first light source 110 and the second light source 120 but also serves as a support to which the first light source 110 and the second light source 120 included in the lamp module 20 can be fixed.

[0049] [Vehicle lamps] FIG. 7 is a perspective view illustrating a plurality of light guide parts provided in a vehicle lamp according to the present invention.

[0050] 1 to 7, a vehicle lamp 10 (hereinafter referred to as "lamp") according to the present invention may include a plurality of lamp modules.

[0051] The lamp module may include a plurality of light sources 100 for forming two or more light distribution patterns, and a light guide 200 provided on one side of the plurality of light sources 100. The light source 100 may include a first light source 110 provided behind the light guide 200 to face a rear surface 220 of the light guide 200, and a second light source 120 provided below the light guide 200 to face a bottom surface 240 of the light guide 200.

[0052] Furthermore, according to the present invention, at least a portion of the light emitted from the first light source 110 passes through the rear surface 220 of the light guide unit 200 and is then emitted to the outside, thereby forming a first light distribution pattern, and at least a portion of the light emitted from the second light source 120 is reflected by the bottom surface 240 of the light guide unit 200 and is then emitted to the outside, thereby forming a second light distribution pattern.

[0053] Meanwhile, as shown in Fig. 7, the lamp 10 according to the present invention may include a plurality of upper lamp modules 20a arranged horizontally at the top of the lamp, and a plurality of lower lamp modules 20b arranged horizontally below the upper lamp modules 20a. Fig. 7 shows three upper lamp modules 20a and three lower lamp modules 20b arranged in the upper and lower regions of the lamp 10.

[0054] According to the present invention, the upper light guiding section 200a provided in the upper lamp module 20a and the lower light guiding section 200b provided in the lower lamp module 20b each include a first curved area 212 (see Figures 1 to 6) having a curved shape that protrudes convexly toward the front of the light guiding section, and a second curved area 214 (see Figures 1 to 6) provided on the upper part of the first curved area 212 and having a curved shape that protrudes convexly toward the front.

[0055] In this case, the shape of the front surface of the upper light guiding unit 200a provided in the upper lamp module 20a may be different from the shape of the front surface of the lower light guiding unit 200b provided in the lower lamp module 20b.

[0056] More specifically, in addition to the first and second curved regions, the front surface of the lower light guiding unit 200b may further include a second recessed region 216 (see FIGS. 1 to 6) formed below the first curved region and recessed upward. Meanwhile, the front surface of the upper light guiding unit 200a may not include a second recessed region. That is, in the lamp 10 according to the present invention, the second recessed region 216 may be formed only in the lower lamp modules 20b. That is, it can be understood that the lamp module according to one embodiment of the present invention is mounted as an upper lamp module of the lamp according to the present invention, and the lamp module according to another embodiment of the present invention is mounted as a lower lamp module of the lamp according to the present invention.

[0057] On the other hand, the above-mentioned first light distribution pattern may be a low beam pattern, and the second light distribution pattern may be a DRL pattern.

[0058] The above description of the vehicle lamp module according to the present invention can be similarly applied to the vehicle lamp according to the present invention.

[0059] The present invention has been described above using limited embodiments and drawings, but it goes without saying that the present invention is not limited thereto, and that a person having ordinary skill in the art to which the present invention pertains can implement various embodiments within the technical spirit of the present invention and the scope of equivalents of the claims set forth below. [Explanation of symbols]

[0060] 10 Vehicle lamps 20 Lamp Module 20a Upper Lamp Module 20b Lower Lamp Module 100 light sources 110 1st light source 120 Second light source 150 Collimator 200 Light guide section 200a Upper light guide 200b Lower light guide 210 Front part 212 1st curved surface area 214 Second curved surface area 216 Second recess area 220 Rear section 230 Top part 240 Bottom part 242 First recess area 242a 1st page 242b 2nd page 242c cutoff section 300 Heatsink

Claims

1. a plurality of light sources for forming two or more types of light distribution patterns; a light guide unit provided on one side of the plurality of light sources, The light source is a first light source provided behind the light guide unit to face a rear surface of the light guide unit; a second light source disposed below the light guide unit to face the lower surface of the light guide unit, At least a portion of the light emitted from the first light source passes through the rear surface portion of the light guiding unit and is then emitted to the outside to form a first light distribution pattern; At least a portion of the light emitted from the second light source is reflected by the lower surface of the light guide and then emitted to the outside, forming a second light distribution pattern.

2. The lower surface of the light guide portion is a first recessed region having an upwardly recessed shape; The second light source is The vehicle lamp module according to claim 1 , wherein the first recessed area is provided within a width of the first recessed area in the front-rear direction.

3. The first recessed region includes: a first surface provided in a rear region of the first recessed region; a second surface provided in a front region of the first recessed region; The vehicle lamp module according to claim 2 , wherein the first surface and the second surface meet at an upper end of the first recessed area.

4. The second light source is The vehicle lamp module according to claim 3 , wherein the first surface is provided within a width in the front-rear direction.

5. When the first recessed region is cut horizontally, The first surface is 5. The vehicle lamp module according to claim 4, having a linear shape or a concave parabolic shape.

6. The vehicle lamp module according to claim 3 , wherein a reflective layer is formed on the first surface.

7. The first recessed region includes: The vehicle lamp module according to claim 3 , further comprising a cut-off portion having a stepped shape, the cut-off portion being provided at an upper end of the first recessed area where the first surface and the second surface meet.

8. The rear surface of the light guide is The vehicle lamp module according to claim 1 , wherein the first light source has a curved surface that protrudes convexly toward the first light source.

9. The front surface of the light guide is a first curved surface area having a curved surface shape that protrudes convexly toward the front of the light guiding section; The vehicle lamp module according to claim 1 , further comprising: a second curved surface area provided on an upper portion of the first curved surface area and having a curved shape that protrudes forward in a convex shape.

10. The vehicle lamp module according to claim 9 , wherein the first curved surface area and the second curved surface area have aspherical lens shapes with different radii of curvature.

11. In the vicinity of a region where the first curved surface region and the second curved surface region contact each other, The vehicle lamp module according to claim 9 , wherein the radius of curvature of the second curved surface area is greater than the radius of curvature of the first curved surface area.

12. the first light distribution pattern is formed by light emitted from the first light source and passing through the first curved surface area, The vehicle lamp module according to claim 9 , wherein the second light distribution pattern is formed by light emitted from the second light source that passes through the second curved surface area.

13. The front surface of the light guide is The vehicle lamp module according to claim 9 , further comprising a second recessed area provided below the first curved area and having an upwardly recessed shape.

14. a first substrate to which the first light source is bonded; a second substrate to which the second light source is bonded; The vehicle lamp module of claim 1 , further comprising a heat sink provided in close contact with the first substrate and the second substrate.

15. The vehicle lamp module according to claim 14 , wherein a region of the heat sink to which the first substrate is bonded and a region to which the second substrate is bonded are integrally formed.

16. A vehicle lamp including a plurality of vehicle lamp modules, The vehicle lamp module includes: a plurality of light sources for forming two or more types of light distribution patterns; a light guide unit provided on one side of the plurality of light sources, The light source is a first light source provided behind the light guide unit to face a rear surface of the light guide unit; a second light source disposed below the light guide unit to face the lower surface of the light guide unit, At least a portion of the light emitted from the first light source passes through the rear surface portion of the light guiding unit and is then emitted to the outside to form a first light distribution pattern; At least a portion of the light emitted from the second light source is reflected by the lower surface portion of the light guiding portion and then emitted to the outside, thereby forming a second light distribution pattern.

17. a plurality of upper lamp modules provided on the upper portion and arranged in a horizontal direction; a plurality of lower lamp modules disposed below the upper lamp module and arranged in a horizontal direction; The vehicle lamp according to claim 16, wherein a front shape of the light guide unit provided in the upper lamp module is different from a front shape of the light guide unit provided in the lower lamp module.

18. The front surface of the light guide is a first curved surface area having a curved surface shape that protrudes convexly toward the front of the light guiding section; a second curved surface area provided on an upper portion of the first curved surface area and having a curved surface shape that protrudes forward in a convex shape; a second recessed area provided below the first curved area and having an upwardly recessed shape, 18. The vehicle lamp of claim 17, wherein the second recessed area is provided only in the plurality of lower lamp modules.

19. the first light distribution pattern is a low beam pattern, The vehicular lamp according to claim 16, wherein the second light distribution pattern is a DRL pattern.

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