Vehicle lamp and optical system thereof

Abstract

The utility model discloses an automobile lamp optical system which comprises an LED lamp, a thick-wall piece, a reflective bowl and an outer mask, the outer mask is located in front of the reflective bowl and the thick-wall piece, and a first light-emitting area and a second light-emitting area are arranged on the outer mask; the thick-wall piece comprises a light condensation part and a light guide part, the LED lamp is configured to emit light to the light incidence end of the light condensation part, and the light guide part is configured to conduct part of light of the light condensation part to the first light emitting area; and the other part of light of the light condensing part is configured to be reflected to the second light emitting area by the light reflecting bowl. The automobile lamp optical system saves cost, is more compact in structure, and improves the space utilization rate of an automobile lamp. The utility model further discloses a car lamp.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to an automobile lamp and an optical system thereof. Background Art

[0002] With the rapid development of the automotive industry, automakers are increasingly innovating and diversifying the design of headlights. Each light-emitting area on a headlight typically uses an independent optical system to meet design requirements. This means that each functional area of ​​the headlight requires at least one independent optical system. An independent optical system includes a PCB assembly, LEDs, optical components, and a mask. Each functional area requires at least one independent optical system to illuminate, resulting in high headlight costs and low space utilization. Utility Model Content

[0003] In view of this, the utility model provides a headlight optical system, which uses a PCB component and a group of LED lights to simultaneously illuminate two light-emitting areas, saving costs, making the optical system structure more compact, and improving the space utilization of the headlight.

[0004] The utility model also provides a vehicle lamp.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A headlight optical system includes an LED lamp, a thick-walled member, a reflective bowl, and an outer cover, wherein the outer cover is located in front of the reflective bowl and the thick-walled member, and the outer cover is provided with a first light-emitting area and a second light-emitting area;

[0007] The thick-walled part includes a light-collecting portion and a light-guiding portion. The LED lamp is configured to emit light toward the light incident end of the light-collecting portion. The light-guiding portion is configured to conduct a portion of the light from the light-collecting portion toward the first light-emitting area; another portion of the light from the light-collecting portion is configured to be reflected by the reflective bowl toward the second light-emitting area.

[0008] Optionally, the light focusing portion includes a first light focusing area and a second light focusing area, the first light focusing area is configured to transmit light to the reflective bowl, and the second light focusing area is configured to transmit light to the light guiding portion.

[0009] Optionally, the light guide portion includes a light guide plate, a first total reflection surface is provided on the second light focusing area, and a second total reflection surface is provided on the light guide plate, the first total reflection surface is configured to reflect light entering the light focusing portion toward the second total reflection surface, and the second total reflection surface is configured to transmit light incident on the first total reflection surface toward a light output surface of the light guide plate;

[0010] The light emitting surface is arranged corresponding to the first light emitting area.

[0011] Optionally, an end surface of the first light-focusing area away from the light incident end of the light-focusing portion is configured as a surface that transmits light to the reflective bowl;

[0012] A third total reflection surface is provided on the first light-focusing area, and the third total reflection surface is configured to reflect the light of the LED lamp toward an end surface of the first light-focusing area away from the incident end of the light.

[0013] Optionally, the end surface of the first light-focusing area away from the incident end of the light comprises a first refractive surface, a second refractive surface and a third refractive surface arranged in sequence, the first refractive surface being configured to direct the light reflected by the third total reflection surface toward the reflective bowl at a first angle; the second refractive surface being configured to direct part of the light at the incident end of the light-focusing portion toward the reflective bowl at a second angle; and the third refractive surface being configured to direct part of the light at the incident end of the light-focusing portion toward the reflective bowl at a third angle.

[0014] The first angle, the second angle and the third angle are all angles between the corresponding refracted light and the vertical direction.

[0015] Optionally, a first reflecting surface, a second reflecting surface and a third reflecting surface arranged in parallel are provided on the reflecting surface of the reflective bowl, and the first reflecting surface is configured to reflect light from the first refractive surface toward the second light-emitting area;

[0016] The second reflective surface is configured to reflect light from the second refractive surface toward the second light-emitting area;

[0017] The third reflective surface is configured to reflect the light from the third refractive surface toward the second light-emitting area.

[0018] Optionally, a first light outlet, a second light outlet and a third light outlet are provided on the second light emitting area, the first light outlet is provided corresponding to the light reflected by the first reflecting surface, the second light outlet is provided corresponding to the light reflected by the second reflecting surface, and the third light outlet is provided corresponding to the light reflected by the third reflecting surface.

[0019] Optionally, the first light outlet, the second light outlet and the third light outlet are arranged in parallel;

[0020] The first light outlet, the second light outlet and the third light outlet are arranged in sequence from top to bottom on the second light emitting area.

[0021] Optionally, the light emitted from the second refractive surface is arranged perpendicular to the end surface of the first focusing area away from the incident end of the light, and the second angle is 0°;

[0022] The angle between the light emitted from the first refractive surface and the light emitted from the second refractive surface is a first angle, the angle between the light emitted from the third refractive surface and the light emitted from the second refractive surface is a third angle, and the first angle and the third angle are the same.

[0023] It can be seen from the above technical solution that in the headlight optical system provided by the present invention, the light emitted by the LED lamp is split into two parts at the focusing portion. A part of the light transmitted by the focusing portion is transmitted to the first light-emitting area through the light-guiding portion, and the other part of the light is reflected to the second light-emitting area through the reflective bowl, thereby realizing the illumination of two light-emitting areas at the same time by using a PCB assembly and a group of LED lamps, which not only saves costs, but also makes the structure of the optical system more compact, thereby improving the space utilization of the headlight.

[0024] The present invention also provides a vehicle lamp, comprising the above-mentioned vehicle lamp optical system, thus having the advantages of the above-mentioned optical system, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a headlight optical system provided by an embodiment of the present invention from one angle;

[0027] Figure 2 A schematic structural diagram of the headlight optical system provided by an embodiment of the present invention from another angle;

[0028] Figure 3 A schematic diagram of the exploded structure of the headlight optical system provided by an embodiment of the utility model;

[0029] Figure 4 A schematic structural diagram of a thick-walled part provided by an embodiment of the present utility model at one angle;

[0030] Figure 5 A schematic structural diagram of a thick-walled member provided by an embodiment of the present invention from another angle;

[0031] Figure 6 A partially enlarged structural diagram of the light-collecting portion of a thick-walled member provided in an embodiment of the present utility model;

[0032] Figure 7 A schematic diagram of light transmission of a thick-walled component provided in an embodiment of the present utility model;

[0033] Figure 8 A schematic structural diagram of the positions of the first refractive surface, the second refractive surface, and the third refractive surface provided in an embodiment of the present utility model;

[0034] Figure 9 A schematic structural diagram of the connection structure between the reflective bowl and the outer cover provided by an embodiment of the utility model at one angle;

[0035] Figure 10 A schematic structural diagram of the connection structure between the reflective bowl and the outer cover provided by an embodiment of the utility model from another angle;

[0036] Figure 11 A schematic diagram of light transmission through a reflective bowl at an angle provided by an embodiment of the present utility model;

[0037] Figure 12 A schematic diagram of light transmission of a reflective bowl from another angle provided by an embodiment of the present invention.

[0038] in:

[0039] 1. PCB assembly,

[0040] 2. LED lights,

[0041] 3. Thick-walled parts,

[0042] 301, first light-concentrating area, 302, light guide plate, 303, light-emitting surface, 304, second total reflection surface, 305, first total reflection surface, 306, third total reflection surface, 307, first refractive surface, 308, second refractive surface, 309, third refractive surface, 310, second light-concentrating area,

[0043] 4. Reflective bowl,

[0044] 401, first reflecting surface, 402, second reflecting surface, 403, third reflecting surface,

[0045] 5. Outer cover,

[0046] 501, first light-emitting area, 502, second light-emitting area, 5021, third light outlet, 5022, second light outlet, 5023, first light outlet. DETAILED DESCRIPTION

[0047] The utility model discloses a headlight optical system, which utilizes a PCB assembly and a group of LED lamps to simultaneously realize the illumination of two light-emitting areas, thereby saving costs, making the structure of the optical system more compact, and improving the space utilization of the headlight.

[0048] The utility model also discloses a vehicle lamp.

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] See Figures 1 to 12 The vehicle light optical system of the present invention includes a PCB assembly 1, an LED lamp 2, a thick-walled component 3, a reflector 4, and an outer cover 5. The LED lamp 2 is mounted on the PCB assembly 1, and the light-emitting end of the reflector 4 is connected to the outer cover 5. The outer cover 5 is located in front of the reflector 4 and the thick-walled component 3. A first light-emitting area 501 and a second light-emitting area 502 are provided on the outer cover 5. The thick-walled component 3 includes a light-collecting portion and a light-guiding portion. The LED lamp 2 is configured to emit light toward a light inlet at the light incident end of the light-collecting portion. The light-guiding portion is configured to conduct a portion of the light transmitted by the light-collecting portion to the first light-emitting area 501. Another portion of the light from the light-collecting portion is configured to be reflected by the reflective surface of the reflector 4 toward the second light-emitting area 502.

[0051] The first and second light-emitting regions 501, 502 are distinct areas on the outer housing 5. The colors of these two regions can be the same or different. The first and second light-emitting regions 501, 502 serve different functions. A group of LED lamps 2 is provided, each mounted on a PCB assembly 1. The first light-emitting region 501 is positioned above the second light-emitting region 502.

[0052] In the headlight optical system of the present invention, the light emitted by the LED lamp 2 is split into two parts at the focusing portion. A part of the light transmitted by the focusing portion is transmitted to the first light-emitting area 501 through the light-guiding portion, and the other part of the light is reflected by the reflective bowl 4 to the second light-emitting area 502. In this way, the illumination of two light-emitting areas is simultaneously achieved using a PCB assembly 1 and a group of LED lamps 2, which not only saves costs but also makes the structure of the optical system more compact and improves space utilization.

[0053] In one embodiment, the first light-emitting area 501 is a light-emitting area for a signal light function, and the second light-emitting area 502 is a light-emitting area for an ambient light function, thereby meeting the lighting requirements of the signal light and the ambient light of the car at the same time.

[0054] Specifically, the light focusing portion includes a first light focusing area 301 and a second light focusing area 310 . The first light focusing area 301 is configured to transmit light toward the reflective bowl 4 , and the second light focusing area 310 is configured to transmit light toward the light guiding portion.

[0055] Furthermore, the light guide portion includes a light guide plate 302. Figures 4 to 6 As shown, a first total reflection surface 305 is provided on the second light-focusing area 310, and a second total reflection surface 304 is provided on the light guide plate 302. The second total reflection surface 304 is arranged opposite to the first total reflection surface 305. The first total reflection surface 305 is configured to reflect the light entering the light-focusing portion toward the second total reflection surface 304, and the second total reflection surface 304 is configured to reflect the light incident on the first total reflection surface 305 toward the light-emitting surface 303 of the light guide plate 302. Figure 7 As shown. The light-emitting surface 303 is arranged corresponding to the first light-emitting area 501, thereby illuminating the first light-emitting area 501. To improve the uniformity of light emission from the first light-emitting area 501, a rectangular pattern is provided on the light-emitting surface 303. In one embodiment, the angle between the second total reflection surface 304 and the vertical direction is 55°.

[0056] To facilitate illumination of the second luminous area 502, the end surface of the first light-concentrating area 301, remote from the light-incident end of the light-concentrating portion, is configured to transmit light toward the reflective surface of the reflective bowl 4. The end surface of the first light-concentrating area 301, remote from the light-incident end, corresponds to the end of the light-concentrating portion closer to the reflective bowl 4. Specifically, a third total reflection surface 306 is provided on the first light-concentrating area 301. This third total reflection surface 306 is configured to reflect light from the LED lamp 2 toward the end surface of the first light-concentrating area 301, remote from the light-incident end. The third total reflection surface 306 and the first total reflection surface 305 are disposed on either side of the light-concentrating portion.

[0057] To increase the illumination range of the second luminous region 502, the end surface of the first light-concentrating area 301, distal from the light incident end, includes a first refractive surface 307, a second refractive surface 308, and a third refractive surface 309, arranged in sequence. The first refractive surface 307 is configured to refract light reflected from the third total reflection surface 306 toward the reflective surface of the reflective bowl 4 at a first angle. The second refractive surface 308 is configured to direct a portion of the light from the incident end of the light-concentrating portion toward the reflective bowl 4 at a second angle. The third refractive surface 309 is configured to direct a portion of the light from the incident end of the light-concentrating portion toward the reflective bowl 4 at a third angle. The first, second, and third angles described above are the angles between the corresponding refracted light and a perpendicular to the end surface of the first light-concentrating area 301 proximal to the reflective bowl 4, i.e., the angles between the refracted light and the vertical direction.

[0058] In a specific embodiment, the second refractive surface 308 is configured to direct part of the light from the incident end of the focusing portion to be emitted perpendicularly to the light-emitting end surface of the first focusing area 301, that is, the light passing through the second refractive surface 308 is directly transmitted, that is, the second angle is 0. The angle between the light emitted from the first refractive surface 307 and the light emitted from the second refractive surface 308 is a first angle, and the angle between the light emitted from the third refractive surface 309 and the light emitted from the second refractive surface 308 is a third angle, and the first angle and the third angle are the same. Specifically, the first angle and the second angle are both 25°, as shown in FIG. Figure 7 The first refractive surface 307 and the third refractive surface 309 are both provided with refractive stripes, and the second refractive surface 308 is a plane. Figure 8 shown.

[0059] In order to reflect the light emitted from the first refractive surface 307, the second refractive surface 308 and the third refractive surface 309 respectively, the reflective surface of the reflective bowl 4 is provided with a first reflective surface 401, a second reflective surface 402 and a third reflective surface 403 which are arranged in parallel. Figure 9 and Figure 10 As shown. The first reflecting surface 401 is configured to reflect the light from the first refractive surface 307 toward the second light-emitting area 502. The second reflecting surface 402 is configured to reflect the light from the second refractive surface 308 toward the second light-emitting area 502. The third reflecting surface 403 is configured to reflect the light from the third refractive surface 309 toward the second light-emitting area 502. In order to avoid light interference, the light reflected by the first reflecting surface 401, the second reflecting surface 402 and the third reflecting surface 403 are arranged in parallel, as shown. Figure 11 and Figure 12 shown.

[0060] Accordingly, in order to emit the light reflected by the first reflecting surface 401, the second reflecting surface 402 and the third reflecting surface 403, a first light outlet 5023, a second light outlet 5022 and a third light outlet 5021 are provided on the second light emitting area 502. Figure 3 As shown. The first light outlet 5023 is provided corresponding to the light reflected by the first reflective surface 401, the second light outlet 5022 is provided corresponding to the light reflected by the second reflective surface 402, and the third light outlet 5021 is provided corresponding to the light reflected by the third reflective surface 403. The first light outlet 5023, the second light outlet 5022, and the third light outlet 5021 are arranged in parallel. Specifically, the first light outlet 5023, the second light outlet 5022, and the third light outlet 5021 are provided sequentially from top to bottom on the second light-emitting area 502.

[0061] The first reflecting surface 401, the second reflecting surface 402 and the third reflecting surface 403 are provided with wavy strip patterns, such as Figure 9As shown, the reflected light is made more uniform and bright spots are avoided. Similarly, in order to improve the reflected light effect, the second total reflection surface 304 is also provided with a wavy stripe pattern.

[0062] In the optical system of the headlight of the present invention, two light-emitting areas are set on the outer cover 5, namely the signal light light-emitting area and the ambient light light-emitting area. The combined optical system breaks the spatial limitations of the headlight. In a limited space, the lighting of two different areas is realized based on the use of only one PCB component 1 and a group of LED light sources 2. Based on the light emitted from the first refractive surface 307, the second refractive surface 308 and the third refractive surface 309 set on the surface of the first focusing area 301 relative to the reflective bowl 4, the reflective bowl 4 is set as a segmented reflective bowl, so that the light is refracted from the first focusing area 301 and enters the first reflective surface 401, the second reflective surface 402 and the third reflective surface 403 of the reflective bowl 4 for mirror reflection. The reflected light finally reaches the outer cover 5, and finally the main light is emitted from the outer cover 5 toward the front of the vehicle, lighting up the light-emitting area on the outer cover 5. The direction of the arrows in the above figures is the direction of the light.

[0063] The headlight optical system of the present invention utilizes a structure combining a multifunctional thick-walled component 3 and a segmented reflective bowl 4, which not only realizes the simultaneous lighting of two different light-emitting areas based on the same PCB component 1, but also saves space inside the headlight.

[0064] The utility model also provides a vehicle lamp, comprising the above-mentioned vehicle lamp optical system.

[0065] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on this solution.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this solution, "plurality" means two or more, unless otherwise specifically defined.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A headlight optical system, characterized in that: The device comprises an LED lamp, a thick-walled member, a reflective bowl and an outer cover, wherein the outer cover is located in front of the reflective bowl and the thick-walled member, and the outer cover is provided with a first light-emitting area and a second light-emitting area; The thick-walled part includes a light-collecting portion and a light-guiding portion. The LED lamp is configured to emit light toward the light incident end of the light-collecting portion. The light-guiding portion is configured to conduct a portion of the light from the light-collecting portion toward the first light-emitting area; another portion of the light from the light-collecting portion is configured to be reflected by the reflective bowl toward the second light-emitting area.

2. The vehicle light optical system according to claim 1, characterized in that: The light focusing portion includes a first light focusing area and a second light focusing area. The first light focusing area is configured to transmit light to the reflective bowl, and the second light focusing area is configured to transmit light to the light guiding portion.

3. The vehicle light optical system according to claim 2, characterized in that: The light guide portion includes a light guide plate, a first total reflection surface is provided on the second light focusing area, and a second total reflection surface is provided on the light guide plate, the first total reflection surface is configured to reflect light entering the light focusing portion toward the second total reflection surface, and the second total reflection surface is configured to transmit light incident on the first total reflection surface toward a light exit surface of the light guide plate; The light emitting surface is arranged corresponding to the first light emitting area.

4. The vehicle light optical system according to claim 2, characterized in that: The end surface of the first light-focusing area away from the light incident end of the light-focusing portion is configured as a surface that transmits light to the reflective bowl; A third total reflection surface is provided on the first light-focusing area, and the third total reflection surface is configured to reflect the light of the LED lamp toward an end surface of the first light-focusing area away from the incident end of the light.

5. The vehicle light optical system according to claim 4, characterized in that: The end surface of the first light-focusing area away from the incident end of the light comprises a first refractive surface, a second refractive surface and a third refractive surface arranged in sequence, the first refractive surface being configured to direct the light reflected by the third total reflection surface toward the reflective bowl at a first angle; the second refractive surface being configured to direct part of the light at the incident end of the light-focusing portion toward the reflective bowl at a second angle; and the third refractive surface being configured to direct part of the light at the incident end of the light-focusing portion toward the reflective bowl at a third angle. The first angle, the second angle and the third angle are all angles between the corresponding refracted light and the vertical direction.

6. The vehicle light optical system according to claim 5, characterized in that: The reflective surface of the reflective bowl is provided with a first reflective surface, a second reflective surface and a third reflective surface which are arranged in parallel, wherein the first reflective surface is configured to reflect the light from the first refractive surface toward the second light-emitting area; The second reflective surface is configured to reflect light from the second refractive surface toward the second light-emitting area; The third reflective surface is configured to reflect the light from the third refractive surface toward the second light-emitting area.

7. The vehicle light optical system according to claim 6, characterized in that: The second light emitting area is provided with a first light outlet, a second light outlet and a third light outlet, the first light outlet is provided corresponding to the light reflected by the first reflecting surface, the second light outlet is provided corresponding to the light reflected by the second reflecting surface, and the third light outlet is provided corresponding to the light reflected by the third reflecting surface.

8. The vehicle light optical system according to claim 7, characterized in that: The first light outlet, the second light outlet and the third light outlet are arranged in parallel; The first light outlet, the second light outlet and the third light outlet are arranged in sequence from top to bottom on the second light emitting area.

9. The vehicle light optical system according to claim 5, characterized in that: The light emitted from the second refractive surface is arranged perpendicular to the end surface of the first focusing area away from the incident end of the light, and the second angle is 0°; The angle between the light emitted from the first refractive surface and the light emitted from the second refractive surface is a first angle, the angle between the light emitted from the third refractive surface and the light emitted from the second refractive surface is a third angle, and the first angle and the third angle are the same.

10. A vehicle lamp, characterized in that: A vehicle light optical system comprising the vehicle light optical system according to any one of claims 1 to 9.

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