Optical system for vehicle lamp and vehicle lamp

Abstract

The optical system comprises a first decorative frame, at least one first light guide installed on the first decorative frame and a light guide PCB assembly connected with the first light guide and used for providing a light source for the first light guide, and the first decorative frame is white. A first optical pattern is arranged on a first area, adjacent to the first light guide, of the first decorative frame; the optical system further comprises a second decoration frame, the second decoration frame is fixedly connected with the first decoration frame, the position, corresponding to the first area, of the second decoration frame is a first light-transmitting area, and the face, facing the first decoration frame, of the first light-transmitting area is provided with second optical patterns used for dodging. One part of light emitted from the first light guide is directly emitted outwards through the first light-transmitting area, and the other part of the light is reflected by the first optical patterns and then is emitted outwards through the first light-transmitting area. After the technical scheme is adopted, the light emitting effect of the light guide is enhanced.

Description

[0001] This application is a divisional application of the invention patent application filed by the applicant on January 23, 2019, with application number "201910064151.6" and invention name "An optical system for a vehicle lamp and a vehicle lamp". Technical Field

[0002] The present invention relates to the technical field of vehicle lamps, and in particular to an optical system for vehicle lamps. Background Art

[0003] At present, more and more vehicle lamps are using LED light sources, which have obvious advantages such as fast response, low energy consumption, and stable color. Vehicle lamps using LED light sources often use light guides. Light guides are structural components that guide the light emitted by the light source to the front of the lamp or the required light-emitting position. This structural component can be made of PC material or PMMA material.

[0004] In the prior art, the light emitted by the light guide in the headlight is usually emitted directly through the lens, and the brightness, recognition and light output effect are very satisfactory. However, with the development of headlights, the demand for more dazzling needs has increased, and the single light guide technology can no longer meet the optical needs. Therefore, it is necessary to develop a headlight optical system with better light output effect, brighter light and higher recognition, and a headlight that can accommodate the optical system in a limited space. Summary of the invention

[0005] In order to overcome the above technical defects, the object of the present invention is to provide a headlight optical system with better light output, brighter light and higher recognition, and a headlight that can accommodate the optical system in a limited space.

[0006] The present invention discloses an optical system for a vehicle lamp, comprising 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, wherein the first decorative frame is white, and a first optical pattern is arranged on a first area of ​​the first decorative frame adjacent to the first light guide; the optical system further comprises a second decorative frame, the second decorative frame is fixedly connected to the first decorative frame, a first light-transmitting area is arranged at a position corresponding to the first area on the second decorative frame, and a second optical pattern for uniform light is arranged 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 is directly emitted outward through the first light-transmitting area, and the other part is emitted outward through the first light-transmitting area after being reflected by the first optical pattern.

[0007] Preferably, the optical system also includes a second light guide and 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 mounted on the first decorative frame; the reflector is arranged below the second light guide, and the reflector includes at least one reflective 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 the second light-transmitting area is provided with a second optical pattern for light uniformity on a side facing the second light guide; the position corresponding to the reflector is the third light-transmitting area, and the third light-transmitting area is provided with a third optical pattern for light uniformity on a side facing the reflector; the light emitted from the second light guide is emitted outward through the second light-transmitting area; the reflective bowl reflects and converges the light of the LED light source from the reflector PCB, so that it is emitted outward through the third light-transmitting area.

[0008] Preferably, the first decorative frame includes a first horizontal portion, a second horizontal portion and an inclined portion; the first horizontal portion and the second horizontal portion are arranged in parallel up and down, and the left or right side is connected by the inclined portion, and there is an accommodating space between the first horizontal portion, the second horizontal portion and the inclined portion.

[0009] Preferably, the light guide PCB assembly also provides a light source for the second light guide, including at least one light guide PCB and at least one heat sink for providing a light source for the first light guide and the second light guide, and the light guide PCB assembly is arranged at the junction of the first horizontal portion and the inclined portion; the first light guide extends from the light guide PCB assembly via the inclined portion to the second horizontal portion; the second light guide is horizontally arranged on the first horizontal portion; the first area is located on the inclined portion; the position of the second decorative frame corresponding to the second light guide on the first horizontal portion is a second light-transmitting area, and the second light-transmitting area is provided with the second optical pattern on the side facing the second light guide.

[0010] Preferably, the second decorative frame is integrally formed by a two-color injection molding process, including a transparent material for the light-transmitting area and a black material for the opaque area;

[0011] The first light-transmitting area includes a continuous light-transmitting area and an interval light-transmitting area, and the continuous light-transmitting area is adjacent to the interval light-transmitting area; the continuous light-transmitting area is strip-shaped, and the second optical pattern is arranged on the side of the continuous light-transmitting area facing the first decorative frame; the interval light-transmitting area includes at least two strip-shaped light-transmitting areas and a strip-shaped opaque area arranged at intervals from each other, and the side of the strip-shaped light-transmitting area facing the first decorative frame is a frosted surface.

[0012] Preferably, the first optical pattern is wavy or sawtooth.

[0013] Preferably, the third optical pattern is tooth-shaped.

[0014] Preferably, the second optical pattern and the third optical pattern are in a gentle pillow shape or a sharp pillow shape.

[0015] The invention also discloses a vehicle lamp, comprising the above optical system.

[0016] Compared with the prior art, the above technical solution has the following beneficial effects:

[0017] 1. Enhanced the light output brightness of the light guide;

[0018] 2. Improved the recognition of vehicle models;

[0019] 3. Can realize the functions of position light / daytime running light / turn light / reversing light / brake light;

[0020] 4. Compact structure and high space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An exploded view of an optical system in one embodiment of the present invention;

[0022] Figure 2 A three-dimensional view of a first decorative frame in one embodiment of the present invention;

[0023] Figure 3 A three-dimensional view of the entire optical system in one embodiment of the present invention;

[0024] Figure 4 is a cross-sectional view of an inclined portion in one embodiment of the present invention;

[0025] Figure 5 FIG. 4 is a schematic diagram of a second optical pattern in an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100-first decorative frame, 110-first horizontal portion, 111-reflector assembly mounting position, 112-second light guide mounting groove, 120-second horizontal portion, 130-inclined portion, 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-interval light-transmitting area, 412a-strip light-transmitting area, 412b-strip opaque light-transmitting 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 DESCRIPTION

[0028] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0031] 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 "at the time of" or "when" or "in response to determining".

[0032] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0034] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0035] See attached Figure 1 , is an exploded view of an optical system for a vehicle lamp in an embodiment of the present invention, comprising a first decorative frame 100, at least one first light guide 200 mounted on the first decorative 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 in a strip shape, and one end is connected to the light guide PCB assembly 300. 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.

[0036] The first decorative frame 100 is white and is injection molded from a white material, and is used to better reflect light, improve reflectivity, and enhance optical effects. A first optical pattern 1311 is provided on the first decorative frame 100 in a first area 131 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 sawtooth-shaped, and the top of the first optical pattern 1311 is rounded, so as to evenly reflect light and avoid glare.

[0037] The optical system further includes a second decorative frame 400, which is fixedly connected to the first decorative frame 100. The position of the second decorative frame 400 corresponding to the first area 131 is a first light-transmitting area 410. The first light-transmitting area 410 is provided with a second optical pattern 450 for uniformly emitting light on a side facing the first decorative frame 100. Figure 5 , is a schematic diagram of the second optical pattern 450, and the second optical pattern is a gentle pillow shape.

[0038] Part of the light emitted from the first light guide 200 is emitted directly through the first light-transmitting area 410, and the other part is emitted through the first light-transmitting area 410 after being reflected by the first optical pattern 1311. The technical solution of the present application is to enhance the reflectivity by designing the decorative frame to be white; and to set the first optical pattern 1311 for reflecting light in the first area 131 close to the first light guide 200, so that the light emitted to the first decorative frame 100 is also reflected, thereby improving the light emission rate and enhancing the brightness of the emitted light. Furthermore, by setting the second optical pattern 450 for uniform light on the inner surface of the first light-transmitting area 410 on the second decorative frame 400, the optical light is emitted uniformly, and the uniformity of the emitted light is ensured while the brightness is increased, thereby achieving a better optical effect.

[0039] See attached Figure 1 , Attachment Figure 3 The optical system further comprises a second light guide 500 and a reflector assembly, wherein the reflector assembly comprises a reflector 600 and a reflector PCB 700 for providing an LED light source for the reflector 600, and the second light guide 500 and the reflector assembly are fixedly mounted on the first decorative frame 100. The second light guide 500 is preferably in a strip shape, 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, and the light emitted by the LED light source propagates in the second light guide 500 and is uniformly emitted outward through the second light guide 500.

[0040] The reflector 600 is arranged below the second light guide 500, and the reflector 600 includes at least one reflective bowl 610 for reflecting and converging light. In this embodiment, there are two reflective bowls 610, which are arranged symmetrically on the left and right. The second decorative frame 400 is respectively provided with a second light-transmitting area 420 and a third light-transmitting area 430, wherein the position corresponding to the second light guide 500 is the second light-transmitting area 420, and the second light-transmitting area 420 is provided with a second optical pattern 450 for light uniformity on the side facing the second light guide 500; the position corresponding to the reflector 600 is the third light-transmitting area 430, and the third light-transmitting area 430 is provided with a third optical pattern for light uniformity on the side facing the reflector 600. The light emitted from the second light guide 500 is emitted outward through the second light-transmitting area 420; the reflective bowl 610 reflects and converges the light from the LED light source of the reflector PCB 700, so that it is emitted outward through the third light-transmitting area 430. The combination of the reflector assembly and the second light guide 500 (and the first light guide 200) realizes the function of the position light / daytime running light. Compared with the prior art that realizes the function of the position light / daytime running light only by the light guide, the present application further provides a reflector assembly, which not only has a better optical effect, but also has a higher recognition and is easier to identify. The third optical pattern is a sharp pillow-shaped optical pattern, which is used to meet the light distribution requirements specified by laws and regulations.

[0041] See attached Figure 2 Furthermore, the first decorative frame 100 includes a first horizontal portion 110, a second horizontal portion 120 and an inclined portion 130; the first horizontal portion 110 and the second horizontal portion 120 are arranged in parallel up and down, and the left or right side is connected by the inclined portion 130, and there is a receiving space 140 between the first horizontal portion 110 and the second horizontal portion 120 and between the inclined portions 130. The receiving space 140 is used to install a high beam module and / or a low beam module and other automotive functional light modules, so that the optical system of the present application can be arranged around the high beam module and / or the low beam module and other automotive functional light modules, and the structure is more compact, making full use of the space in the lamp.

[0042] Furthermore, the light guide PCB assembly 300 also provides a light source for the second light guide 500, including at least one light guide PCB and at least one heat sink for providing a light source for the first light guide 200 and the second light guide 500, the light guide PCB assembly 300 is arranged at the junction of the first horizontal portion 110 and the inclined portion 130, and the first light guide 200 and the second light guide 500 are simultaneously connected to the light guide PCB assembly 300. A second light guide 500 mounting groove 112 is horizontally arranged on the first horizontal portion 110, and the second light guide 500 is installed in the second light guide 500 mounting groove 112 and is horizontally arranged on the first horizontal portion 110. A reflector assembly mounting position 111 is also arranged 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 the top, and the emitter is mounted on the first horizontal portion 110 from the bottom. The reflector PCB 700 and the reflector 600 are fixedly connected to the first horizontal portion 110 by screws or buckles. The first light guide 200 is mounted in the first light guide 200 mounting groove 132. The first light guide 200 mounting groove 132 starts from the junction of the first horizontal portion 110 and the inclined portion 130, and extends to the second horizontal portion 120 through the inclined portion 130. The first light guide 200 extends from the light guide PCB assembly 300 to the second horizontal portion 120 via the inclined portion 130. The first area 131 is located on the inclined portion 130, adjacent to the mounting groove 132 of the first light guide 200. See the attached Figure 4 , is a cross-sectional view of the inclined portion 130 , from which it can be seen that the first optical pattern 1311 on the first region 131 is wavy or sawtooth-shaped and is disposed adjacent to the mounting groove 132 of the first light guide 200 .

[0043] See attached Figure 3Further, the first light-transmitting area 410 includes a continuous light-transmitting area 411 and an interval light-transmitting area 412, the continuous light-transmitting area 411 and the interval light-transmitting area 412 are adjacent; the continuous light-transmitting area 411 is strip-shaped, and the second optical pattern 450 is arranged on the side of the continuous light-transmitting area 411 facing the first decorative frame 100. Preferably, the continuous light-transmitting area 411 extends to the position of the first light guide 200 corresponding to the second horizontal portion 120, and the light emitted from the first light guide 200 located on the second horizontal portion 120 is emitted outward through the continuous light-transmitting area 411. The interval light-transmitting area 412 includes at least two strip light-transmitting areas 412a and a strip light-impermeable area 412b arranged at intervals from each other, and the side of the strip light-transmitting area 412a facing the first decorative frame 100 is a frosted surface. Part of the light emitted from the first light guide 200 is emitted directly through the continuous light-transmitting area 411, and the other part is emitted through the spaced light-transmitting area 412 of the first light-transmitting area 410 after being reflected by the first optical pattern 1311 of the first area 131, that is, it is emitted through the strip light-transmitting area 412a. Preferably, part of the light is also emitted through the continuous light-transmitting area 411 after being reflected by the first optical pattern 1311 of the first area 131. The strip light-transmitting areas 412a are arranged at intervals and the inner surface is arranged as a frosted surface in order to weaken the light emission here, so as to avoid the light emission here being too strong and affecting the optical effect of the continuous light-transmitting area 411. The spaced arrangement of the strip light-transmitting areas 412a makes the light emission here more layered, with better visual effects and higher recognition.

[0044] Preferably, the second decorative frame 400 is integrally formed by a two-color injection molding process. The light-transmitting areas thereon are made of the same transparent material, preferably PC or PMMA. The opaque areas are made of opaque black material, such as ABS or other suitable materials. In an embodiment of the present application, the light-transmitting areas include: a second light-transmitting area 420, a third light-transmitting area 430, a continuous light-transmitting area 411, and a strip light-transmitting area 412a.

[0045] The present invention also discloses a vehicle lamp, comprising the above optical system, wherein the optical system is used to realize the functions of position lamp / daytime running lamp / turn lamp / reversing lamp / brake lamp.

[0046] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An optical system for a vehicle lamp, comprising 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, characterized in that: The first decorative frame is white, and a first optical pattern is arranged on a first area of ​​the first decorative frame adjacent to the first light guide; The optical system further includes a second decorative frame, the second decorative frame is fixedly connected to the first decorative frame, a position on the second decorative frame corresponding to the first area is a first light-transmitting area, and a second optical pattern for light uniformity is provided on a side of the first light-transmitting area facing the first decorative frame; A portion of the light emitted from the first light guide is emitted directly through the first light-transmitting area, and another portion of the light is emitted through the first light-transmitting area after being reflected by the first optical pattern; The second decorative frame is integrally formed by a two-color injection molding process, including a transparent material for the light-transmitting area and a black material for the opaque area; The first light-transmitting area includes a continuous light-transmitting area and an interval light-transmitting area, and the continuous light-transmitting area is adjacent to the interval light-transmitting area; The continuous light-transmitting area is in a strip shape, and the second optical pattern is arranged on a side of the continuous light-transmitting area facing the first decorative frame; The spaced light-transmitting area includes at least two strip-shaped light-transmitting areas and a strip-shaped light-impermeable area that are spaced apart from each other, and a side of the strip-shaped light-transmitting area that faces the first decorative frame is a frosted surface; Part of the light emitted from the first light guide is emitted outward directly through the continuous light-transmitting area of ​​the first light-transmitting area, and the other part is emitted outward through the interval light-transmitting area of ​​the first light-transmitting area after being reflected by the first optical pattern.

2. The optical system according to claim 1, wherein: The optical system further comprises a second light guide and a reflector assembly, wherein the reflector assembly comprises a reflector and a reflector PCB for providing an LED light source for the reflector, and the second light guide and the reflector assembly are fixedly mounted on the first decorative frame; The reflector is disposed below the second light guide, and the reflector includes at least one reflective 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 the second light-transmitting area is provided with a second optical pattern for light homogenization on a side facing the second light guide; the position corresponding to the reflector is the third light-transmitting area, and the third light-transmitting area is provided with a third optical pattern for light homogenization on a side facing the reflector; The light emitted from the second light guide is emitted outward through the second light-transmitting area; the reflective bowl reflects and converges the light from the LED light source of the reflector PCB, so that the light is emitted outward through the third light-transmitting area.

3. The optical system according to claim 2, characterized in that The first decorative frame includes a first horizontal portion, a second horizontal portion and an inclined portion; The first horizontal portion and the second horizontal portion are vertically arranged in parallel, and the left side or the right side is connected by the inclined portion, and there is a receiving space between the first horizontal portion and the second horizontal portion and between the inclined portions.

4. The optical system according to claim 3, characterized in that The light guide PCB assembly also provides a light source for the second light guide, including at least one light guide PCB and at least one heat sink for providing a light source for the first light guide and the second light guide, and the light guide PCB assembly is arranged at the junction of the first horizontal portion and the inclined portion; The first light guide extends from the light guide PCB assembly through the inclined portion to the second horizontal portion; The second light guide is horizontally arranged on the first horizontal portion; The first area is located on the inclined surface; The position of the second decorative frame corresponding to the second light guide on the first horizontal portion is a second light-transmitting area, and the second optical pattern is arranged on a side of the second light-transmitting area facing the second light guide.

5. The optical system according to claim 1, wherein: The first optical pattern is in a wave shape or a sawtooth shape.

6. The optical system according to claim 2, wherein: The second optical pattern and the third optical pattern are in a gentle pillow shape or a sharp pillow shape.

7. A vehicle lamp, characterized in that: Comprising the optical system as claimed in any one of claims 1 to 6.

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