TWM615055U - Vehicle lighting device - Google Patents

Abstract

A vehicle lighting device includes a base, a lens, a composite reflection unit, a light-emitting unit and a shutter. The lens edge includes a light-incident surface, a light-emitting surface, and a focal point corresponding to the light-incident surface. The composite reflection unit has a first focal point for the light-emitting unit and a second focal point coincident with the focal point of the lens. The shutter includes a groove disposed on the right side of the second focal point, the top surface of the shutter corresponds to the second focal point, part of the light emitted by the light-emitting unit is reflected by the first reflecting surface, and part of the light passes through the After the reflection of the second reflecting surface, it passes through the second focal point and enters the lens from the light-incident surface. The shutter is used to shield part of the light, the groove is used to reduce part of the light, and the rest of the light entering the lens is passed through the lens. The light-emitting surface projects a close-light shape and can effectively reduce glare.

Description

Vehicle lighting device

This model relates to a lighting device, in particular to a lighting device for vehicles.

Referring to FIG. 1, a conventional vehicle lamp device disclosed in Taiwan Patent No. I709710 includes a compound lens unit 92, a reflector 93, a shutter 94, and a light-emitting unit 95. The compound lens unit 92 includes a first lens 921 arranged along an optical axis A, and a second lens 922 located below the first lens 921. The first lens 921 has a first light-incident surface 923 and a first light-emitting surface 924 oppositely arranged along the optical axis A, and a back focus 925 corresponding to the first light-incident surface 923. The second lens 922 There is a second light incident surface 926 and a second light exit surface 927 arranged oppositely, and a lower focal point 928 corresponding to the second light incident surface 926. The reflector 93 is located on the side of the compound lens unit 92 corresponding to the first light incident surface 923 along the optical axis A, and includes an arc-shaped reflecting surface 931 that can reflect light toward the first light incident surface 923. The reflective surface 931 includes a first focal point 932, and a second focal point 933 located between the first light incident surface 923 and the first focal point 932, the second focal point 933 and the back focal point 925 of the first lens 921 coincide. The shield 94 corresponds to the second focal point 933 of the reflector 93 and extends downward. Time to send The light unit 95 includes a first light source 951 with a light emitting surface facing upwards and disposed at the first focal point 932, and a second light source 952 with a light emitting surface facing the second light incident surface 926 and disposed at the lower focal point 928. When the first light-emitting source 951 is turned on, after the light emitted by the first light-emitting source 951 is reflected by the reflector 93, part of the light is shielded by the shutter 94, and the rest of the light enters the first light-incident surface 923 from the first light-incident surface 923. A lens 921, and a low-light shape is projected from the first light-emitting surface 923. When the second light-emitting source 952 is also turned on, the light emitted by the second light-emitting source 952 enters from the second light-incident surface 926 The second lens 922 converges the incoming light, and projects a light shape from the second light-emitting surface 927 to form a high-light shape together with the light from the first light-emitting source 951.

Although the existing vehicle light device can realize the conversion between the near light and the far light in one device, this type of existing vehicle light device requires two sets of light-emitting sources, which not only has a complicated structure, but also has a relatively high manufacturing and assembly cost. When the existing car light device uses low beams, it is also easy to cause the 50L light distribution point of the European standard ECE R112 to be too bright, and the light is easy to be directly projected to the opposite driving and cause glare, or indirectly affect the line of sight through the reflection of the wet road, thereby affecting the driving. Safety.

Therefore, the purpose of the present invention is to provide a vehicle lighting device that can improve the light collection efficiency while effectively reducing the glare of the low beam headlights.

Therefore, the new vehicle lighting device includes a base, a lens, and a complex Combines a reflection unit, a light-emitting unit, and a shutter. The lens is spaced apart from the base along an optical axis, and includes a light-incident surface adjacent to the base, a light-emitting surface opposite to the light-incident surface, and a focal point corresponding to the light-incident surface. The composite reflecting unit includes a first reflecting member disposed on the base, and a second reflecting member disposed between the first reflecting member and the base, and the first reflecting member has a light-incident surface An arc-shaped first reflective surface that reflects light, and the second reflector has an arc-shaped second reflective surface that is set at a gap from the first reflective surface and can reflect light toward the light-incident surface. The surface and the second reflective surface share a first focus adjacent to the first reflective surface, and a second focus located between the first focus and the light incident surface and passing through the optical axis. The second focus is connected to the The focal points of the lens coincide. The light-emitting unit is arranged on the base and corresponds to the first focus of the composite reflection unit. The shield includes a first surface close to the base, a second surface opposite to the first surface along the extending direction of the optical axis, a top surface and a bottom surface respectively connecting the first surface and the second surface , And a groove provided on the first surface adjacent to the top surface and located on the right side of the second focal point and recessed toward the second surface, the top surface of the shield plate corresponds to the second focal point, and the light emitting unit is located After being reflected by the first reflecting surface, part of the emitted light passes through the second focal point and enters the lens from the light incident surface. After being reflected by the second reflecting surface, part of the light passes through the second focal point and enters the lens. The light surface enters the lens, the shutter is used to shield part of the light passing through the second focus, the groove is used to reduce part of the light reflected by the composite reflection unit, and the rest of the light entering the lens is projected from the light exit surface A close light shape.

The effect of the present invention is that the composite reflection unit improves the light gathering efficiency and increases the brightness, and at the same time, the groove reduces part of the light reflected by the composite reflection unit, which can prevent the 50L light distribution point of the European standard ECE R112 from being too bright , That is, when using the low beam, it can effectively reduce the glare that affects the oncoming car.

2: pedestal

21: Base body

211: Top Surface

212: accommodating hole

22: Convex section

3: lens holder

31: Bracket body

32: connection section

4: lens

41: Glossy surface

42: Glossy surface

421: The first part

422: The second part

423: Upper District

424: down zone

425: Upper District

426: Down Zone

43: focus

5: Composite reflection unit

51: The first reflector

511: first reflecting surface

52: second reflector

521: second reflective surface

53: The first focus

54: second focus

55: Connection surface

6: Light-emitting unit

7: Shutter

71: Shutter body

711: first side

712: second side

713: top

714: Bottom

715: groove

72: Clamping section

8: Raster unit

A: Optical axis

B: Tangent

C: Light expansion area

D: Spotlight area

50L: light distribution point

X: front and rear direction

Y: left and right direction

Z: Up and down direction

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a cross-sectional schematic diagram of a light path of an existing vehicle lamp device; A three-dimensional assembly view of a first embodiment of the device; Figure 3 is a three-dimensional assembly view of the first embodiment viewed from another perspective; Figure 4 is a three-dimensional exploded view of the first embodiment; Figure 5 is the The first embodiment is similar to a perspective view of a shutter in the perspective of FIG. 2; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 3; and FIG. 7 is a schematic diagram of an optical path similar to FIG. Fig. 8 is a schematic diagram of a light path similar to Fig. 6, illustrating that the shutter is located at a remote position; Fig. 9 is a schematic diagram of a light shape of a low beam of the first embodiment; Fig. 10 is the first embodiment A schematic diagram of a light shape of a high beam headlight according to an embodiment; 11 is a perspective view of a composite reflection unit of a second embodiment of the new vehicle lighting device; FIG. 12 is a perspective view of a lens of a third embodiment of the new vehicle lighting device; FIG. 13 is the present invention A perspective view of a lens of a fourth embodiment of the novel vehicle lighting device; and FIG. 14 is a perspective view of the lens of the fourth embodiment viewed from another angle of view.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to Figures 2, 3, and 4, a first embodiment of the vehicle lighting device of the present invention includes a base 2, a lens holder 3, a lens 4, a composite reflection unit 5, a light emitting unit 6, and a cover Board 7.

A front-rear direction X, a left-right direction Y perpendicular to the front-rear direction X, and a vertical direction Z perpendicular to the front-rear direction X and the left-right direction Y are defined.

An optical axis A parallel to the front and rear direction X and passing through the lens 4 is defined.

The base 2 includes a base body 21 for the composite reflection unit 5 and the light-emitting unit 6, and two protruding sections 22 arranged at intervals along the left and right direction Y and respectively projecting forward from the base body 21 . The base body 21 has a top surface 211 and a recess The accommodating hole 212 on the top surface 211 for the light emitting unit 6 is provided. In this embodiment, the base 2 is a heat sink, but it is not limited to this.

The lens holder 3 is arranged on the front side of the base 2 along the front-rear direction X, and includes a holder body 31 for the lens 4, and two opposite sides of the holder body 31 along the left-right direction Y. Connect section 32. One end of each connecting section 32 is connected to the bracket body 31, and the other end is connected to the corresponding protruding section 22.

4, 5, 7, the lens 4 is fixed on the bracket body 31 and is spaced from the base 2 along the front-to-rear direction X, and includes a light incident surface 41 adjacent to the base 2 and a light-incident surface 41 opposite to the base 2 The light-emitting surface 42 of the light-incident surface 41 and a focal point 43 corresponding to the light-incident surface 41.

The composite reflecting unit 5 includes a first reflecting member 51 disposed on the base 2 and a second reflecting member 52 disposed between the first reflecting member 51 and the base body 21. The first reflector 51 has an arc-shaped first reflecting surface 511 that can reflect light toward the light incident surface 41. The second reflective member 52 has a second reflective surface 521 that is disposed at a height difference from the first reflective surface 511 toward the light incident surface 41 and can reflect light toward the light incident surface 41 and is arc-shaped. The first reflective surface 511 and the second reflective surface 521 share a first focal point 53 adjacent to the first reflective surface 511, and a first focal point 53 located between the first focal point 53 and the light incident surface 41 and passing through the optical axis The second focal point 54 of A, the second focal point 54 coincides with the focal point 43 of the lens 4.

The light emitting unit 6 is disposed in the receiving hole 212 of the base 2 and corresponds to the first focal point 53 of the composite reflection unit 5. In this embodiment, the light-emitting unit 6 is There is at least one light emitting diode of a semiconductor chip, but not limited to this.

The shield 7 is pivotably clamped on the inner side of the protruding sections 22 of the base 2, between the lens 4 and the composite reflection unit 5, and includes a downwardly corresponding second focal point 54 An extended shield body 71 and two sandwiching sections 72 arranged at intervals along the left and right direction Y on the shield body 71 and protruding backwards along the front-rear direction X and respectively connected to the protruding sections 22. The shutter body 71 has a first surface 711, a second surface 712 opposite to the first surface 711 along the front and rear direction X, a top surface 713 and a top surface 713 respectively connecting the first surface 711 and the second surface 712 A bottom surface 714 and a groove 715 arranged on the first surface 711 adjacent to the top surface 713 and located on the right side of the second focal point 54 and recessed toward the second surface 712.

Referring to FIGS. 6, 7, and 8, the shutter 7 can be controlled to rotate relative to the lens 4 between a light-shielding position and a remote position.

5, 7, 9, in the shading position, the top surface 713 of the shutter body 71 corresponds to the second focal point 54 and extends downward, part of the light emitted by the light-emitting unit 6 through the first reflective surface After the reflection of 511, it passes through the second focal point 54 and enters the lens 4 from the light incident surface 41. After being reflected by the second reflecting surface 521, part of the light passes through the second focal point 54 and enters from the light incident surface 41. The lens 4 and the shutter 7 are used to shield part of the light passing through the second focal point 54 and form a cut-off line. The rest of the light entering the lens 4 is projected by the light exit surface 42 into a near-light shape. The groove 715 is used to reduce part of the reflection through the composite reflection unit 5 and through the top surface of the shutter body 71 The light reflected by 713 and projected to the light-incident surface 41 avoids the light distribution point 50L of the European standard ECE R112 from being too bright, which can reduce the light directly projected to the opposite driving or indirectly reflected by the wet road, which can effectively reduce the impact on The glare of oncoming cars.

5, 8, 10, when the far position, the top edge of the shutter body 71 rotates backward without passing through the second focal point 54, part of the light emitted by the light emitting unit 6 is reflected by the first reflective surface 511 Then, it passes through the second focal point 54 and enters the lens 4 from the light incident surface 41. After being reflected by the second reflecting surface 521, part of the light passes through the second focal point 54 and enters the lens 4 from the light incident surface 41. The light rays collectively project a far-light shape from the light-emitting surface 42. It is worth noting that in this embodiment, a brake unit (not shown) drives the shutter 7 to rotate relative to the base 2, but the control method of the shutter 7 is not the focus of the present invention, so it is not here. Do repeat.

It is further explained that the light reflected by the first reflecting surface 511 is relatively deviated from the optical axis A to form a light diffusion area C, and the light reflected by the second reflecting surface 521 is more concentrated near the optical axis A, forming a condensing area. The light area D, through the design of the height difference between the first reflective surface 511 and the second reflective surface 521, can effectively improve the light-gathering efficiency of the second reflective surface 521, so that the present invention does not require a second set of light-emitting sources , It can meet the brightness requirements of high beam headlights.

In this embodiment, the height difference between the first reflective surface 511 and the second reflective surface 512 is not less than 0.1 mm, and the position, coverage and curvature of the curved surface of the aforementioned reflective surface can be adjusted to control the light reflection. Direction to increase application flexibility.

In this embodiment, the light-emitting unit 6 is disposed between 0.5 mm and 10 mm below the optical axis A, and can be adjusted according to the horizontal width and vertical depth of the required light projection area to increase application flexibility.

Preferably, in this embodiment, the shutter 7 can be rotated between the shading position and the remote position relative to the lens 4, thereby enabling the present invention to switch between low beam and high beam, but In other embodiments, the shutter 7 can also be fixed only at the shading position, and the present invention only has the function of the low beam.

It is worth noting that, referring to Figures 3 and 4, on a plane defined by the optical axis A and the up-down direction Z, a tangent line B passing through the top surface of the second reflecting surface 521 and the optical axis A is defined. The angle between the optical axis A and the tangent line B is between 30 degrees and 60 degrees, so that the ratio of the light reflected by the first reflective surface 511 and the second reflective surface 521 can be appropriately adjusted, thereby adjusting the focus. The ratio of light and light expansion to correspond to the light distribution requirements of different laws and regulations. Furthermore, the second reflective surface 521 has an independent curvature, which can greatly improve the light-gathering effect compared to a traditional single reflective surface structure.

The composite reflection unit 5 can improve the light collection efficiency and increase the brightness. With the design of the drop between the first reflection surface 511 and the second reflection surface 521, the present invention uses only one set of light sources without the need for a second reflection surface. Group luminous sources can realize the brightness switching requirements of low beam and high beam. And by reducing part of the light beam projected to the light-incident surface 41 by the groove 715 reflected by the top surface 713 of the shutter body 71, the light distribution point 50L of the European standard ECE R112 can be prevented from being too bright. Effectively reduce the impact on the opposite direction when the light is on The glare of an oncoming car.

Referring to FIG. 11, a second embodiment of the vehicle lighting device of the present invention is similar to the first embodiment. The difference is that the first reflector 51 and the second reflector 52 of the composite reflector unit 5 are It is integrally formed and includes a connecting surface 55 connecting the first reflecting surface 511 and the second reflecting surface 521. The integrated design of the composite reflection unit 5 can reduce the manufacturing cost and the manufacturing process, and can also reduce the positioning adjustment time and the inevitable positioning error when the first reflector 51 and the second reflector 52 are assembled separately.

Therefore, the second embodiment of the present invention can also achieve the same purpose and effect as the first embodiment.

Referring to Fig. 12, a third embodiment of the vehicle lighting device of the present invention is similar to the first embodiment. The difference is that the light-emitting surface 42 of the lens 4 is composed of a plurality of curved parts with a drop.

The light-emitting surface 42 has a first curved portion 421, and two are disposed on opposite sides of the first curved portion 421 along the left-right direction Y and are arranged at a height difference between the direction of the light-incident surface 41 and the first curved portion 421 The second song 422. The first curved portion 421 has an upper area 423, and a lower area 424 located below the upper area 423 and arranged at a height from the upper area 423 in the direction of the light incident surface 41. Each second curved portion 422 has an upper area 423. The upper area 425 and a lower area 426 located below the upper area 425 and disposed at a height difference from the upper area 425 in the direction of the light incident surface 41.

The drop between each upper area 423, 425 and the corresponding lower area 424, 426 is not less than 0.1 mm. The difference between the upper area 423 of the first curved portion 421 and the upper area 425 of the second curved portions 422 is not less than 0.1 mm. The drop between the lower area 424 of the first curved portion 421 and the lower area 426 of the second curved portions 422 is not less than 0.1 mm.

In this embodiment, the curvature of each upper area 423, 425 and each lower area 424, 426 can be adjusted separately to further control the light projection direction and further improve the light-gathering effect.

Therefore, the third embodiment of the present invention can also achieve the same purpose and effect as the first embodiment.

Referring to Figures 13 and 14, a fourth embodiment of the vehicle lighting device of the present invention is similar to the first embodiment. The difference is that: the vehicle lighting device of the present invention also includes two vehicles respectively disposed on the light incident surface 41 and The grating unit 8 of the light-emitting surface 42. The grating units 8 are selected from the group consisting of coating, microstructure, coating and microstructure. The area of the grating units 8 is not greater than one third of the total surface area of the light incident surface 41 and the light exit surface 42.

It is worth noting that the grating unit 8 can only be arranged on one of the light incident surface 41 and the light exit surface 42, and the area of the grating unit 8 is not larger than the corresponding light incident surface 41 and the light exit surface 42. One-third of the surface area of one of them.

It is worth noting that the plating film can be formed by vapor deposition, sputtering, film sticking, or the like. The microstructure can be processed by sandblasting processing, grinding processing, laser processing, It is made by etching process and other methods, and the aforementioned process can be directly applied to the lens 4 or applied to the injection mold core for injection molding.

The grating unit 8 is used to block or reflect part of the light reflected by the composite reflection unit 5 (please refer to Figure 7), which can make the light near the cut-off line more concentrated and reduce the stray light and chromatic dispersion near the cut-off line. The effect of.

Therefore, the fourth embodiment of the present invention can also achieve the same purpose and effect as the first embodiment.

To sum up, the new vehicle lighting device of the present invention reduces the part of the light beam projected to the light-incident surface 41 by the recess 715 through the top surface 713 of the shutter body 71, which can avoid the European standard ECE R112. The light distribution point 50L is too bright, which effectively reduces the glare that affects the oncoming car when using the low beam. The composite reflection unit 5 can improve the light collection efficiency and increase the brightness, and by designing the height difference between the first reflection surface 511 and the second reflection surface 521 along the front-to-rear direction X, the second reflection surface 521 can be effectively improved. The light-gathering effect enables the present invention to use only one set of luminous sources without setting a second set of luminous sources to achieve the brightness switching requirements of the low beam and the high beam. Furthermore, the second reflective surface 521 of the present invention has an independent curvature, and the ratio of light condensing and diffusing in the light type can be adjusted by adjusting the curvature, which can correspond to the light distribution requirements of different laws and regulations, and can be greatly improved according to needs. The effect of spotlight.

However, the above are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all applications are based on the scope of patent application and patent specification of the present model. Simple equivalent changes and modifications made to the content are still within the scope of this new patent.

2: pedestal

21: Base body

211: Top Surface

212: accommodating hole

22: Convex section

3: lens holder

31: Bracket body

32: connection section

4: lens

41: Glossy surface

42: Glossy surface

5: Composite reflection unit

51: The first reflector

511: first reflecting surface

52: second reflector

521: second reflective surface

6: Light-emitting unit

7: Shutter

71: Shutter body

72: Clamping section

X: front and rear direction

Y: left and right direction

Z: Up and down direction

Claims (10)

A vehicle lighting device, including: A pedestal A lens, which is spaced apart from the base along an optical axis, and includes a light-incident surface adjacent to the base, a light-emitting surface opposite to the light-incident surface, and a focal point corresponding to the light-incident surface; A composite reflecting unit includes a first reflecting member disposed on the base, and a second reflecting member disposed between the first reflecting member and the base, and the first reflecting member has a device capable of facing the incident light A first reflective surface that reflects light and is arc-shaped, and the second reflective member has a second reflective surface that is set at a gap from the first reflective surface and can reflect light toward the light-incident surface and is arc-shaped. The reflective surface and the second reflective surface share a first focus adjacent to the first reflective surface, and a second focus located between the first focus and the light incident surface and passing through the optical axis, the second focus Coincide with the focal point of the lens; A light emitting unit arranged on the base and corresponding to the first focus of the composite reflection unit; and A shield includes a first surface close to the base, a second surface opposite to the first surface along the extending direction of the optical axis, a top surface and a top surface respectively connecting the first surface and the second surface A bottom surface, and a groove provided on the first surface adjacent to the top surface and located on the right side of the second focal point and recessed toward the second surface, the top surface of the shield plate corresponds to the second focal point, and the light-emitting unit After being reflected by the first reflecting surface, part of the emitted light passes through the second focal point and enters the lens from the light incident surface. After being reflected by the second reflecting surface, part of the light passes through the second focal point and passes through the lens. The light incident surface enters the lens, the shutter is used to shield part of the light passing through the second focus, the groove is used to reduce part of the light reflected by the composite reflection unit, and the rest of the light entering the lens is projected by the light exit surface A close light shape appears. The vehicle lighting device according to claim 1, wherein the shutter is rotatably disposed between the lens and the composite reflection unit, and is movable between a light-shielding position and a remote position with respect to the lens, When in the light-shielding position, the top surface of the shutter corresponds to the second focal point. After being reflected by the first reflecting surface, part of the light emitted by the light-emitting unit passes through the second focal point and enters the lens from the light-incident surface After being reflected by the second reflecting surface, part of the light passes through the second focal point and enters the lens from the light incident surface. The shutter is used to shield part of the light passing through the second focal point. The light reflected by the composite reflection unit and the rest of the light entering the lens are projected into a near-light shape from the light-emitting surface. At the remote position, the shutter does not pass through the second focus, and part of the light emitted by the light-emitting unit After being reflected by the first reflective surface, it passes through the second focal point and enters the lens from the light-incident surface. After being reflected by the second reflective surface, part of the light passes through the second focal point and enters the lens from the light-incident surface, Together, a distant light shape is projected from the light-emitting surface. The vehicle lighting device according to claim 1, wherein the first reflector and the second reflector of the composite reflector unit are integrally formed, and include a connection between the first reflector and the second reflector. Connect the surface. The vehicle lighting device according to claim 1, wherein the height difference between the first reflective surface and the second reflective surface is not less than 0.1 mm. The vehicle lighting device according to claim 1, wherein the light-emitting unit is disposed between 0.5 mm and 10 mm below the optical axis. The vehicle lighting device according to claim 1, further comprising a grating unit disposed on at least one of the light-incident surface and the light-emitting surface, and the form of the grating unit is selected from the group consisting of coating, microstructure, and coating. And at least one of the group consisting of microstructures. The vehicle lighting device according to claim 6, wherein the area of the grating unit provided on one of the light-incident surface and the light-emitting surface is not greater than the surface area of the corresponding one of the light-incident surface and the light-emitting surface One-third of it. The vehicular lighting device according to claim 1, wherein the light-emitting surface of the lens is composed of a plurality of curved parts having a step. The vehicle lighting device according to claim 8, wherein the light-emitting mask has a first curved part through which the optical axis passes, and two parts arranged on the first curved part along a horizontal direction perpendicular to the optical axis Two second curved parts on opposite sides of the light-incident surface and different from the first curved part. Both the first curved part and the second curved parts have an upper area, and an upper area located below the upper area. The lower zone is set at a gap from the upper zone. The vehicle lighting device according to claim 9, wherein the drop between each upper area and the corresponding lower area is not less than 0.1 mm, and the upper area of the first curved part and the upper area of the second curved parts are not less than 0.1 mm. The drop between the areas is not less than 0.1 mm, and the drop between the lower area of the first curved part and the lower areas of the second curved parts is not less than 0.1 mm.

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