An optical system for a vehicle lamp and a vehicle lamp

Abstract

The present invention provides an optical system for a vehicle lamp, which includes a first trim frame, at least one first light guide mounted on the first trim frame, and a light guide PCB assembly connected to the first light guide for providing a light source for the first light guide. The first trim frame is white, and a first optical pattern is provided in a first area of the first trim frame adjacent to the first light guide. The optical system further includes a second trim frame, which is fixedly connected to the first trim frame. A first light-transmitting area is provided at a position corresponding to the first area on the second trim frame, and a second optical pattern for light homogenization is provided on a surface of the first light-transmitting area facing the first trim frame. A part of the light emitted from the first light guide directly exits through the first light-transmitting area, and another part exits through the first light-transmitting area after being reflected by the first optical pattern. After adopting the above technical solution, the light-emitting effect of the light guide is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to an optical system for vehicle lamps. Background Art

[0002] Currently, more and more vehicle lamps adopt LED light sources. LED light sources have obvious advantages such as fast response, low energy consumption, and stable chromaticity. Vehicle lamps using LED light sources often use light guides. A light guide is a structural member that guides the light emitted by a light source to the front of the lamp or the required light-emitting position, and this structural member can be made of PC material or PMMA material.

[0003] In the prior art, the light emitted by the light guide in the vehicle lamp usually directly exits through the lens, and the brightness, recognition, and light-emitting effect are already very satisfactory. However, with the increasing requirement for more dazzling vehicle lamps, the single light guide technology can no longer meet the optical needs. Therefore, it is necessary to develop a vehicle lamp optical system with a better light-emitting effect, higher brightness, and higher recognition, as well as a vehicle lamp that can accommodate this optical system in a limited space. Summary of the Invention

[0004] In order to overcome the above technical defects, the purpose of the present invention is to provide a vehicle lamp optical system with a better light-emitting effect, higher brightness, and higher recognition, as well as a vehicle lamp that can accommodate this optical system in a limited space.

[0005] The present invention discloses an optical system for vehicle lamps, including a first decorative frame, at least one first light guide mounted on the first decorative frame, and a light guide PCB assembly connected to the first light guide for providing a light source for the first light guide. The first decorative frame is white, and a first optical pattern is provided in a first area adjacent to the first light guide on the first decorative frame; the optical system further includes a second decorative frame, the second decorative frame is fixedly connected to the first decorative frame, a first light-transmitting area corresponding to the first area is provided on the second decorative frame, and a second optical pattern for light homogenization is provided on a surface of the first light-transmitting area facing the first decorative frame; a part of the light emitted from the first light guide directly exits through the first light-transmitting area, and another part exits through the first light-transmitting area after being reflected by the first optical pattern.

[0006] Preferably, the optical system further includes a second light guide and a reflector assembly. The reflector assembly includes a reflector and a reflector PCB for providing an LED light source for the reflector. The second light guide and the reflector assembly are fixedly installed on the first decorative frame. The reflector is disposed below the second light guide. The reflector includes at least one reflecting bowl for reflecting and converging light. The second decorative frame is respectively provided with a second light-transmitting area and a third light-transmitting area. Wherein, the position corresponding to the second light guide is the second light-transmitting area, and a second optical pattern for light homogenization is disposed on the surface of the second light-transmitting area facing the second light guide. The position corresponding to the reflector is the third light-transmitting area, and a third optical pattern for light homogenization is disposed on the surface of the third light-transmitting area facing the reflector. The light emitted from the second light guide exits through the second light-transmitting area. The reflecting bowl reflects and converges the light of the LED light source from the reflector PCB, and makes it exit through the third light-transmitting area.

[0007] Preferably, the first decorative frame includes a first horizontal portion, a second horizontal portion and an inclined surface portion. The first horizontal portion and the second horizontal portion are arranged parallel to each other up and down, and are connected by the inclined surface portion on the left side or the right side. There are accommodation spaces between the first horizontal portion and the second horizontal portion and between the inclined surface portions.

[0008] Preferably, the light guide PCB assembly also provides a light source for the second light guide, and includes at least one light guide PCB and at least one radiator for providing light sources for the first light guide and the second light guide. The light guide PCB assembly is disposed at the junction of the first horizontal portion and the inclined surface portion. The first light guide extends from the light guide PCB assembly through the inclined surface portion to the second horizontal portion. The second light guide is horizontally disposed on the first horizontal portion. The first area is located on the inclined surface portion. The position of the second light guide on the first horizontal portion corresponding to the second decorative frame is the second light-transmitting area, and the second optical pattern is disposed on one side of the second light-transmitting area facing the second light guide.

[0009] Preferably, the second decorative frame is integrally formed by a two-color injection molding process, and includes a transparent material for the light-transmitting area and a black material for the light-impermeable area.

[0010] Wherein the first light-transmitting area includes a continuous light-transmitting area and an intermittent light-transmitting area, and the continuous light-transmitting area is adjacent to the intermittent light-transmitting area. The continuous light-transmitting area is strip-shaped, and the second optical pattern is disposed on one side of the continuous light-transmitting area facing the first decorative frame. The intermittent light-transmitting area includes at least two strip-shaped light-transmitting areas and strip-shaped light-impermeable areas that are spaced apart from each other, and the side of the strip-shaped light-transmitting area facing the first decorative frame is a frosted surface.

[0011] Preferably, the first optical pattern is wavy or serrated.

[0012] Preferably, the third optical pattern is dentate.

[0013] Preferably, the second optical pattern and the third optical pattern are gentle pillow-shaped or sharp pillow-shaped.

[0014] The present invention also discloses a vehicle lamp, including the above optical system.

[0015] After adopting the above technical solution, compared with the prior art, the following beneficial effects are achieved:

[0016] 1. The light output brightness of the light guide is enhanced;

[0017] 2. The recognition rate of the vehicle model is improved;

[0018] 3. The functions of position lamp / daytime running lamp / turn signal lamp / reverse lamp / brake lamp can be realized;

[0019] 4. The structure is compact and the space utilization rate is high. Description of the Drawings

[0020] Figure 1 It is an exploded view of the optical system in an embodiment of the present invention;

[0021] Figure 2 It is a three-dimensional view of the first decorative frame in an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional view of the whole optical system in an embodiment of the present invention;

[0023] Figure 4 It is a transverse cross-sectional view of the inclined surface part in an embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the second optical pattern in an embodiment of the present invention.

[0025] Reference Signs:

[0026] 100 - First decorative frame, 110 - First horizontal part, 111 - Mounting position for reflector assembly, 112 - Second light guide mounting groove, 120 - Second horizontal part, 130 - Inclined surface part, 131 - First area, 1311 - First optical pattern, 132 - First light guide mounting groove, 140 - Accommodating space, 200 - First light guide, 300 - Light guide PCB assembly, 400 - Second decorative frame, 410 - First light-transmitting area, 411 - Continuous light-transmitting area, 412 - Spaced light-transmitting area, 412a - Strip-shaped light-transmitting area, 412b - Strip-shaped light-blocking area, 420 - Second light-transmitting area, 430 - Third light-transmitting area, 450 - Second optical pattern, 500 - Second light guide, 600 - Reflector, 610 - Reflective bowl, 700 - Reflector PCB. Detailed implementation manners

[0027] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0028] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0029] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0032] In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a mechanical connection or an electrical connection, or it may be the internal communication of two elements. It may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms may be understood according to specific circumstances.

[0033] In the following description, suffixes such as "module", "component", or "unit" used to denote elements are only for facilitating the description of the present invention and have no specific meaning in themselves. Therefore, "module" and "component" can be used interchangeably.

[0034] See the attached Figure 1 , which is an exploded view of an optical system for a vehicle lamp according to an embodiment of the present invention, including a first trim frame 100, at least one first light guide 200 mounted on the first trim frame 100, and a light guide PCB assembly 300 connected to the first light guide 200 for providing a light source for the first light guide 200. The first light guide 200 is preferably strip-shaped and is connected to the light guide PCB assembly 300 at one end. The light guide PCB assembly 300 is used to provide an LED light source, and the light emitted by the LED light source propagates in the first light guide 200 and is uniformly emitted outward through the first light guide 200.

[0035] The first trim frame 100 is white and is injection-molded from a white material, which is used to better reflect light, improve the reflectivity, and enhance the optical effect. A first optical pattern 1311 is provided in a first area 131 of the first trim frame 100 adjacent to the first light guide 200, and the first optical pattern 1311 is used to reflect light. Preferably, the first optical pattern 1311 is wavy or serrated, and the top of the first optical pattern 1311 has a rounded corner for uniformly reflecting light and avoiding glare.

[0036] The optical system further includes a second trim frame 400, the second trim frame 400 is fixedly connected to the first trim frame 100, a first light-transmitting area 410 corresponding to the first area 131 is provided on the second trim frame 400, and a second optical pattern 450 for uniformly emitting light is provided on a surface of the first light-transmitting area 410 facing the first trim frame 100. See the attached Figure 5 , which is a schematic diagram of the second optical pattern 450, and the second optical pattern is a smooth pillow shape.

[0037] A part of the light emitted from the first light guide 200 directly exits through the first light-transmitting area 410, and another part is reflected by the first optical pattern 1311 and then exits through the first light-transmitting area 410. In the technical solution of the present application, the decorative frame is designed to be white to enhance the reflectivity; by providing the first optical pattern 1311 for reflecting light in the first area 131 close to the first light guide 200, the light emitted towards the first decorative frame 100 is also reflected, improving the light emission rate and enhancing the brightness of the light output. Further, by providing the second optical pattern 450 for light homogenization on the inner surface of the first light-transmitting area 410 of the second decorative frame 400, the light is uniformly emitted outwards, ensuring the uniformity of the light output while increasing the brightness, and achieving a better optical effect.

[0038] See attached Figure 1 and attached Figure 3 As shown in the attached drawings, the optical system further includes a second light guide 500 and a reflector assembly. The reflector assembly includes a reflector 600 and a reflector PCB 700 for providing an LED light source for the reflector 600. The second light guide 500 and the reflector assembly are fixedly installed on the first decorative frame 100. The second light guide 500 is preferably strip-shaped, and one end thereof is connected to the light guide PCB assembly 300. The light guide PCB assembly 300 is used to provide an LED light source. The light emitted by the LED light source propagates in the second light guide 500 and is uniformly emitted outwards through the second light guide 500.

[0039] The reflector 600 is disposed below the second light guide 500. The reflector 600 includes at least one reflecting bowl 610 for reflecting and converging light. In this embodiment, there are two reflecting bowls 610, which are symmetrically arranged left and right. The second trim frame 400 is respectively provided with a second light-transmitting area 420 and a third light-transmitting area 430. The position corresponding to the second light guide 500 is the second light-transmitting area 420, and a second optical pattern 450 for light homogenization is provided on the surface of the second light-transmitting area 420 facing the second light guide 500; the position corresponding to the reflector 600 is the third light-transmitting area 430, and a third optical pattern for light homogenization is provided on the surface of the third light-transmitting area 430 facing the reflector 600. The light emitted from the second light guide 500 exits through the second light-transmitting area 420; the reflecting bowl 610 reflects and converges the light from the LED light source of the reflector PCB 700, and makes it exit through the third light-transmitting area 430. Through the combination of the reflector assembly and the second light guide 500 (and the first light guide 200), the function of the position lamp / daytime running lamp is realized. Compared with the prior art in which the position lamp / daytime running lamp function is only realized by the light guide, the reflector assembly is further provided in this application, which not only has better optical effects, but also the reflector assembly has higher recognition and is easier to be recognized. The third optical pattern is a sharp pillow-shaped optical pattern, which is used to meet the light distribution requirements specified by regulations.

[0040] See Appendix Figure 2 Further, the first trim frame 100 includes a first horizontal portion 110, a second horizontal portion 120, and an inclined surface portion 130; the first horizontal portion 110 and the second horizontal portion 120 are arranged parallel to each other up and down, and are connected by the inclined surface portion 130 on the left or right side. There is an accommodation space 140 between the first horizontal portion 110 and the second horizontal portion 120 and between the inclined surface portions 130. The accommodation space 140 is used to install the high beam module and / or the low beam module and other automotive function lamp modules. Thus, the optical system of this application can be arranged around the high beam module and / or the low beam module and other automotive function lamp modules, with a more compact structure and full utilization of the space inside the vehicle lamp.

[0041] Further, the optical guide PCB assembly 300 also provides a light source for the second optical guide 500, including at least one optical guide PCB and at least one heat sink for providing a light source for the first optical guide 200 and the second optical guide 500. The optical guide PCB assembly 300 is disposed at the junction of the first horizontal portion 110 and the inclined surface portion 130. The first optical guide 200 and the second optical guide 500 are simultaneously connected to the optical guide PCB assembly 300. A second optical guide 500 mounting groove 112 is horizontally provided on the first horizontal portion 110, and the second optical guide 500 is mounted in the second optical guide 500 mounting groove 112 and is horizontally disposed on the first horizontal portion 110. A reflector assembly mounting position 111 is further provided in the middle of the first horizontal portion 110 for mounting a reflector assembly. Preferably, the reflector PCB 700 is mounted on the first horizontal portion 110 from above, and the emitter is mounted on the first horizontal portion 110 from below. The reflector PCB 700 and the reflector 600 are fixedly connected to the first horizontal portion 110 by screws or snaps. The first optical guide 200 is mounted in the first optical guide 200 mounting groove 132. The first optical guide 200 mounting groove 132 starts from the junction of the first horizontal portion 110 and the inclined surface portion 130, extends through the inclined surface portion 130 to the second horizontal portion 120, and the first optical guide 200 extends from the optical guide PCB assembly 300 via the inclined surface portion 130 to the second horizontal portion 120. The first region 131 is located on the inclined surface portion 130 and is adjacent to the mounting groove 132 of the first optical guide 200. Refer to the appendix Figure 4 , which is a cross-sectional view of the inclined surface portion 130. It can be seen that the first optical pattern 1311 on the first region 131 is wavy or serrated and is disposed adjacent to the first optical guide 200 mounting groove 132.

[0042] Refer to the appendix Figure 3, Further, the first light-transmitting region 410 includes a continuous light-transmitting region 411 and a spaced light-transmitting region 412, and the continuous light-transmitting region 411 and the spaced light-transmitting region 412 are adjacent; the continuous light-transmitting region 411 is strip-shaped, and the second optical pattern 450 is provided on a side of the continuous light-transmitting region 411 facing the first decorative frame 100. Preferably, the continuous light-transmitting region 411 extends to the position of the first light guide 200 on the corresponding second horizontal portion 120, and the light emitted from the first light guide 200 on the second horizontal portion 120 is emitted outward through the continuous light-transmitting region 411. The spaced light-transmitting region 412 includes at least two strip-shaped light-transmitting regions 412a and strip-shaped light-blocking regions 412b that are spaced apart from each other, and a side of the strip-shaped light-transmitting region 412a facing the first decorative frame 100 is a frosted surface. A part of the light emitted from the first light guide 200 is directly emitted outward through the continuous light-transmitting region 411, and another part is reflected by the first optical pattern 1311 of the first region 131 and then emitted outward through the spaced light-transmitting region 412 of the first light-transmitting region 410, that is, emitted outward through the strip-shaped light-transmitting region 412a. Preferably, a part of the light is also reflected by the first optical pattern 1311 of the first region 131 and then emitted outward through the continuous light-transmitting region 411. The strip-shaped light-transmitting regions 412a are spaced apart and the inner surface is set as a frosted surface to weaken the light emission here and avoid too strong light emission here from affecting the optical effect of the continuous light-transmitting region 411. The spaced arrangement of the strip-shaped light-transmitting regions 412a makes the light emission here more layered, with a better visual effect and higher recognition.

[0043] Preferably, the second decorative frame 400 is integrally formed by a two-color injection molding process. The light-transmitting regions thereon are made of the same transparent material, preferably PC or PMMA. The light-blocking regions are made of an opaque black material, such as ABS or other suitable materials. In the embodiments of the present application, the light-transmitting regions include: the second light-transmitting region 420, the third light-transmitting region 430, the continuous light-transmitting region 411, and the strip-shaped light-transmitting region 412a.

[0044] The present invention also discloses a vehicle lamp, including the above optical system, and this optical system is used to implement the functions of position lamp / daytime running lamp / turn signal lamp / reverse lamp / brake lamp.

[0045] It should be noted that the embodiments of the present invention have good implementability and are not any form of limitation to the present invention. Any person skilled in the art may use the disclosed technical content to change or modify it into an equivalent effective embodiment. However, as long as it does not depart from the technical content of the technical solution of the present invention, any modification, equivalent change or modification made to the above embodiments according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An optical system for a vehicle lamp, comprising a first trim frame, at least one first light guide mounted on the first trim frame, and a light guide PCB assembly connected to the first light guide for providing a light source for the first light guide, characterized in that, The first decorative frame is white, and a first optical pattern is provided in a first area of the first decorative frame adjacent to the first light guide; The optical system further includes a second decorative frame, which is fixedly connected to the first decorative frame. A first light-transmitting area corresponding to the first area is provided on the second decorative frame, and a second optical pattern for light homogenization is provided on a side of the first light-transmitting area facing the first decorative frame; A part of the light emitted from the first light guide directly exits through the first light-transmitting area, and another part exits through the first light-transmitting area after being reflected by the first optical pattern; The optical system further includes a second light guide and a reflector assembly. The reflector assembly includes a reflector and a reflector PCB for providing an LED light source for the reflector. The second light guide and the reflector assembly are fixedly installed on the first decorative frame; The reflector is disposed below the second light guide, and the reflector includes at least one reflecting bowl for reflecting and converging light; The second decorative frame is respectively provided with a second light-transmitting area and a third light-transmitting area. Among them, a position corresponding to the second light guide is the second light-transmitting area, and a second optical pattern for light homogenization is provided on a side of the second light-transmitting area facing the second light guide; a position corresponding to the reflector is the third light-transmitting area, and a third optical pattern for light homogenization is provided on a side of the third light-transmitting area facing the reflector; The light emitted from the second light guide exits through the second light-transmitting area; the reflecting bowl reflects and converges the light of the LED light source from the reflector PCB, and makes it exit through the third light-transmitting area; 2. The optical system according to claim 1, characterized in that, The first decorative frame includes a first horizontal part, a second horizontal part and an inclined part; The first horizontal part and the second horizontal part are arranged parallel to each other up and down, and are connected by the inclined part on the left or right side. There are accommodation spaces between the first horizontal part and the second horizontal part and between the inclined parts; 3. The optical system according to claim 2, characterized in that, The light guide PCB assembly also provides a light source for the second light guide, and includes at least one light guide PCB and at least one radiator for providing light sources for the first light guide and the second light guide. The light guide PCB assembly is arranged at the junction of the first horizontal part and the inclined part; The first light guide extends from the light guide PCB assembly through the inclined part to the second horizontal part; The second light guide is horizontally arranged on the first horizontal part; The first area is located on the inclined part; A position of the second decorative frame corresponding to the second light guide on the first horizontal part is the second light-transmitting area, and the second optical pattern is provided on a side of the second light-transmitting area facing the second light guide; 4. The optical system according to claim 1, characterized in that, The second optical pattern and the third optical pattern are gentle pillow shapes or sharp pillow shapes; 5. The optical system according to claim 1, characterized in that, The second decorative frame is integrally formed by a two-color injection molding process, and includes a transparent material for the light-transmitting area and a black material for the light-impermeable area; Among them, the first light-transmitting area includes a continuous light-transmitting area and an intermittent light-transmitting area, and the continuous light-transmitting area is adjacent to the intermittent light-transmitting area; The continuous light-transmitting area is strip-shaped, and the second optical pattern is provided on a side of the continuous light-transmitting area facing the first decorative frame; The spaced light-transmitting region includes at least two strip-shaped light-transmitting regions and strip-shaped light-blocking regions that are spaced apart from each other, and the side of the strip-shaped light-transmitting region facing the first decorative frame is a frosted surface.

6. The optical system according to claim 5, characterized in that, A part of the light emitted from the first light source directly exits through the continuous light-transmitting region of the first light-transmitting region, and another part exits through the spaced light-transmitting region of the first light-transmitting region after being reflected by the first optical pattern.

7. The optical system according to any one of claims 1 to 6, characterized in that, The first optical pattern is wavy or serrated.

8. A vehicle lamp, characterized in that, It includes the optical system according to any one of claims 1-7.

Images