Patent Description:
The present invention relates to a vehicle illumination device, and particularly to a vehicle lamp optical unit. In addition, it further relates to a vehicle lamp module und a vehicle.

With the rapid development of the automobile industry and the continuous improvement of people's living conditions, automobiles have become one of the indispensable means of transportation for people to travel. The global retain number of automobiles is increasing year by year, and the popularity of automobiles has also driven the rapid development of the manufacture and design of automobile parts. For example, the role of automobile lamps is not only limited to illumination function, and the appearance modeling thereof and specific lighting effect modes for turning on or turning off vehicle lamps have begun to be pursued by consumers.

With the diversification of vehicle lamp modeling and illumination modes, it is required to provide a vehicle illumination device with a plurality of vehicle illumination units, such as low beam, high beam, and daytime running lamps, and position lamps, respective vehicle illumination units are usually arranged independently from each other and dispersedly, and it is required to provide each vehicle illumination unit separately with corresponding light incident portion and light emergent portion, so as to produce multiple illumination areas or illumination effects. However, the dispersed and independent arrangement of multiple vehicle illumination units not only leads to great space occupation of the entire vehicle illumination device and increases the volume of the vehicle lamp, but also increases positioning and installation errors between respective parts and affects the accuracy of the optical system. In addition, the light source of a vehicle illumination unit is usually arranged in the rear of the light incident portion thereof, and a light spot would be formed when the vehicle lamp is turned on, which affects the appearance effect of the vehicle lamp when it is turned on. For example, <CIT> discloses a Bi-function lighting module made of transparent material.

Therefore, it is required to design a novel vehicle lamp optical unit to overcome or alleviate the above shortcomings of the prior art.

A technical problem firstly to be solved by the present invention is to provide a vehicle lamp optical unit, which can improve the appearance visual effect obtained by a lightened vehicle lamp and meet requirements for various vehicle lamp illumination modes and lightening modes.

A technical problem to be solved by a second aspect of the present invention is to provide a vehicle lamp module, which can improve the appearance visual effect and meet requirements for various vehicle lamp illumination modes and lightening modes.

A technical problem to be solved by a third aspect of the present invention is to provide a vehicle, of which the vehicle lamp illumination modes and the lightening modes are diversified and have good illumination effects.

In order to achieve the above-mentioned objects, a first aspect of the present invention provides a vehicle lamp optical unit, with the features of claim <NUM>.

As a preferred structural form, each of the first light incident structures respectively comprises a collimator located on the upper side or the lower side of the light incident structure reference plane and a light guide portion in connection with the collimator; the light guide portion extends from the light emergent end of the collimator to the rear end of the first light passage; a reflecting portion is provided on the light guide portion; and the reflecting portion is capable of reflecting the emergent light of the collimator to a direction towards the first light passage for emergence.

Preferably, a recess structure corresponding to the light guide portion is respectively provided at a connection between the first light passage and each of the light guide portions, and each of the recess structures respectively comprises a light guide portion connection surface in connection with the light guide portion corresponding to the recess structure, an intermediate connection surface in connection with the light guide portion connection surface, and an light passage connection surface in connection with the intermediate connection surface, wherein a first cut-off portion forming a first light shape cut-off line is provided at the connection between the intermediate connection surface and the light passage connection surface.

More preferably, the first light emergent surface is a curved surface protruding forwards, the first cut-off portion is located on the median surface of the first light emergent surface, and the median surface is a horizontal plane passing through the vertex of a longitudinal transversal of the first light emergent surface.

Specifically, the first light emergent surface is a curvature continuous curved surface.

Typically, a light guide is provided in the recess structure, and the light emergent surface of the light guide faces the light passage connection surface, such that light emerging from the light emergent surface of the light guide are transmitted to the first light emergent surface via the first light passage.

As another preferred structural form, the at least one first light incident structure is configured to have at least one low-beam first light incident structure, or have at least one high-beam first light incident structure, or have at least one of the low-beam first light incident structure and at least one of the high-beam first light incident structure.

Preferably, the shapes of projections of the first light emergent surface and the light incident structure reference plane along the light emergent direction are respectively a strip-shape extending left and right; the first light incident structure is configured as a plurality of the low-beam first light incident structures and a plurality of the high-beam first light incident structures; the low-beam first light incident structures and the high-beam first light incident structures are arranged alternately; and each of the collimators is located on the lower side of the light incident structure reference plane.

More preferably, the distance between the first cut-off portion corresponding to the low-beam first light incident structure and the upper surface of the first light passage is greater than the distance between the first cut-off portion corresponding to the high-beam first light incident structure and the upper surface of the first light passage.

Further preferably, the intermediate connection surface corresponding to the low-beam first light incident structure is configured to tilt upwards from back to front, and the side of the intermediate connection surface facing the first light passage is a reflecting surface.

Specifically, the intermediate connection surface corresponding to the high-beam first light incident structure is configured to tilt downwards from back to front, and the side of the intermediate connection surface departing from the first light passage is a reflecting surface.

More preferably, the light incident surface is provided with a plurality of the second light incident structures, and the plurality of the second light incident structures is configured to have at least one low-beam second light incident structure and at least one high-beam second light incident structure.

Further preferably, each of the low-beam second light incident structures and each of the high-beam second light incident structures are respectively a collimating structure.

Specifically, the low-beam second light incident structure is located above the high-beam second light incident structure; the second light emergent surface comprises a low-beam light emergent surface located in front of the low-beam second light incident structure and a high-beam light emergent surface located at the light emergent end of the high-beam second light incident structure; a second light passage is provided between the light emergent end of the low-beam second light incident structure and the low-beam light emergent surface; and a second cut-off portion for forming a second light shape cut-off line is provided at the connection between the bottom surface of the second light passage and the low-beam light emergent surface.

More specifically, the lower surface of the second light passage is configured as a reflecting surface.

Typically, the low-beam light emergent surface is configured as a curved surface protruding forwards.

The second aspect of the present invention provides a vehicle lamp module, comprising a vehicle lamp optical unit as described above, and light sources provided in one-to-one correspondence with the first light incident structures, wherein each of the light sources is capable of being controlled individually to be turned on or turned off.

The third aspect of the present invention provides a vehicle, comprising a vehicle lamp module as described above.

It can be seen from the above technical solutions of the present invention that as for the first optical element in the vehicle lamp optical unit according to the present invention, the first light incident structure is configured to extend from a side in the up-down width direction of the light incident structure reference plane to the first light passage, the first light incident structure can guide light received thereby to be emerged towards the first light passage and be transmitted to the first light emergent surface along the first light passage, that is to say, a light source corresponding to the first light incident structure is provided on the upper side or the lower side of the light incident structure reference plane, wherein it can be effectively avoided that a light spot is produced in a situation where the light source is provided in the rear of the first optical element, and it is accordingly avoided that the vehicle lamp lightening effect shows, when viewing from the front of the vehicle lamp, a row of light spots, hereby improving the appearance visual effect of the vehicle lamp optical unit; moreover, the vehicle lamp optical unit can meet requirements for various vehicle lamp illumination modes and lightening modes.

Other features and more prominent advantages of the present invention will be described in detail in subsequent specific embodiments.

The specific embodiments of the present invention will be illustrated in detail below with reference to the accompanying drawings. It should be understood that specific embodiments described here are merely used to illustrate and explain the present invention, instead of being intended to limit the present invention.

In the description of the present invention, it shall be clarified that, unless otherwise expressly specified and defined, terms such as "connect", "provide", and "mount" shall be construed in a broad sense. For example, connection may refer to fixed connection, or detachable connection, or integrated connection; it may refer to direct connection, or indirect connection via an intermediate, or inner communication between two elements or interactive relationship between two elements. For a person ordinarily skilled in the art, the specific meanings of the above-mentioned terms in the present invention could be construed in accordance with specific circumstances. It shall further be clarified that a longitudinal transversal is a transversal obtained through interception of a first light emergent plane <NUM> by a vertical plane perpendicular to a vertical tangent plane of the first light emergent plane <NUM>.

In addition, terms such as "first" and "second" are used merely for purpose of description, and cannot be construed as indicating or implying to have importance in relativity, or implicitly suggesting the number of the indicated technical feature. Therefore, a feature defined with a term "first" or "second" can explicitly or implicitly comprise one or more said feature.

It should be understood that in order to facilitate the description of the present invention and simplify the description, terms "front" and "rear" refer to the forward and backward directions of a vehicle lamp optical unit along a light emergent direction, that is to say, the first light emergent surface <NUM> is located in the front, and a light incident structure reference plane <NUM> is located in the rear; terms "left" and "right" refer to the left and right direction of the vehicle lamp optical unit along the light emergent direction; and terms "upper" and "lower" refer to the upward and downward directions of the vehicle lamp optical unit along the light emergent direction. The terms indicate orientation or position relationships shown based on the accompanying drawings, rather than indicating or implying that a specified device or element must have a certain orientation and be constructed and operated in a certain orientation, and therefore cannot be construed as limiting the present invention.

Referring to <FIG>, <FIG>, <FIG>, and <FIG>, a vehicle lamp optical unit provided in a first aspect of the present invention comprises a first optical element <NUM>, wherein the rear end face and the front end face of the first optical element <NUM> along a light emergent direction are respectively a light incident structure reference plane <NUM> and a first light emergent surface <NUM>, the rear end of the first optical element <NUM> is formed as a light incident portion, the light incident portion comprises at least one first light incident structure provided along the left and right direction of the light incident structure reference plane <NUM>, and a first light passage <NUM> is formed between the light incident portion and the first light emergent surface <NUM>, wherein the first light incident structure is configured to extend from the upper side or the lower side of the light incident structure reference plane <NUM> to the first light passage <NUM>, each of the first light incident structures is capable of guiding light rays received by the first light incident structure to be emitted towards the first light passage <NUM> and be transmitted to the first light emergent surface <NUM> along the first light passage <NUM>.

Through the vehicle lamp optical unit according to the above-mentioned basic technical solutions of the present invention, light rays received by the first light incident structure emerge towards the first light passage <NUM> after direction change from the upper side or the lower side of the light incident structure reference plane <NUM>, and are transmitted to the first light emergent surface <NUM> along the first light passage <NUM>, and in turn emerge from the first light emergent surface <NUM> and form a desired illumination light shape, wherein it can be effectively avoided that a light spot is produced when a light source (namely the light source <NUM> described below) corresponding to the first light incident structure is provided in the rear of the first optical element <NUM>, and it is avoided that the vehicle lamp lightening effect shows, when viewing from the front of the vehicle lamp, a row of light spots, hereby improving the appearance visual effect of the vehicle lamp optical unit; moreover, the vehicle lamp optical unit can meet requirements for various vehicle lamp illumination modes and lightening modes.

As a preferred embodiment of the present invention, referring to <FIG>, <FIG>, <FIG>, and <FIG>, each of the first light incident structures respectively comprises a collimator <NUM> located on the upper side or the lower side of the light incident structure reference plane <NUM>, and a light guide portion <NUM> in connection with the collimator <NUM>; the light guide portion <NUM> extends from the light emergent end of the collimator <NUM> to the rear end of the first light passage <NUM>; the light guide portion <NUM> is provided with a reflecting portion <NUM>; and the reflecting portion <NUM> is capable of reflecting the emergent light of the collimator <NUM> to a direction towards the first light passage <NUM> for emergence. Various collimating elements may be adopted for the structure of the collimator <NUM>. For example, it may be specifically configured as a collimating cup, which is provided with an inwardly recessed light source connection portion, and correspondingly, the opening of the light source connection portion faces up or faces down. The reflecting portion <NUM> may be specifically configured as a reflecting plane or a reflecting curved surface, which is opposite to the light emergent end of the collimator <NUM> and has a certain inclined angle, that is to say, light rays received by the collimator <NUM> are emitted to the reflecting portion <NUM>, reflected by the reflecting portion <NUM> and then emitted towards the first light passage <NUM>, and transmitted to the first light emergent surface <NUM> through the first light passage <NUM>.

In the present invention, in order to enable the vehicle lamp optical unit to be better applied for forming various vehicle lamp light shapes, preferably, a recess structure <NUM> corresponding to the light guide portion <NUM> is respectively provided at the connection between the first light passage <NUM> and each of the light guide portions <NUM>, and referring to <FIG> and <FIG>, each of the recess structures <NUM> respectively comprises a light guide portion connection surface <NUM> in connection with the light guide portion <NUM> corresponding to the recess structure <NUM>, an intermediate connection surface <NUM> in connection with the light guide portion connection surface <NUM>, and an light passage connection surface <NUM> in connection with the intermediate connection surface <NUM>, wherein a first cut-off portion <NUM> forming a first light shape cut-off line is provided at the connection between the intermediate connection surface <NUM> and the light passage connection surface <NUM>. At this moment, the first light shape cut-off line formed by the first cut-off portion <NUM> can be designed according to specific application situations of the first optical element <NUM>, e.g., it may be an auxiliary low-beam cut-off line, or an auxiliary high-beam cut-off line.

In the present invention, the first light emergent surface <NUM> is preferably a curved surface protruding forwards, and may be configured as a single and smooth curved light emergent surface, hereby improving the aesthetics of the appearance of the vehicle lamp. Correspondingly preferably, referring to <FIG>, the first cut-off portion <NUM> is located on the median surface of the first light emergent surface <NUM>, and the median surface is a horizontal plane passing through the vertex of a longitudinal transversal of the first light emergent surface <NUM>, such that the first light shape cut-off line correspondingly formed by the first cut-off portion <NUM> is clearer and realizes a better light shape.

Further preferably, the first light emergent surface <NUM> is a curvature continuous curved surface, which improves the appearance and the light emerging effect of the first optical element <NUM>.

The at least one first light incident structure according to the present invention may be specifically configured to have at least one low-beam first light incident structure <NUM>, or have at least one high-beam first light incident structure <NUM>, or have at least one low-beam first light incident structure <NUM> and at least one high-beam first light incident structure <NUM>. There may be one, two, three or more low-beam first light incident structures <NUM> and/or high-beam first light incident structures <NUM>, and the number may be configured according to actual application requirements of the vehicle lamp optical unit.

In order to simplify the structural design of the vehicle lamp optical unit, reduce positioning and installation errors between various vehicle lamp illumination units and between parts, and improve the installation accuracy, the projection plane shapes of the first light emergent surface <NUM> and the light incident structure reference plane <NUM> along the light emergent direction are respectively a strip-shape extending left and right; the first light incident structure is configured to be multiple low-beam first light incident structures <NUM> and multiple high-beam first light incident structures <NUM>; the low-beam first light incident structures <NUM> and the high-beam first light incident structures <NUM> are arranged alternately; and each of the collimators <NUM> is located on the lower side of the light incident structure reference plane <NUM>. At this moment, the first optical element <NUM> can be simultaneously used for forming partial light shape or complete light shape of the low beam or the high beam, and integrate multiple functions as a whole, thus making the structural design simple and compact. The alternate arrangement of the low-beam first light incident structures <NUM> and the high-beam first light incident structures <NUM> can meet the requirement that under the two modes, i.e., the low-beam mode and the high-beam mode, the first light emergent surface <NUM> has consistent lightening effect, and it is avoided that the first light emergent surface <NUM> is only partially lightened in a single low-beam mode, which affects the lightening effect of the vehicle lamp.

Based on the alternate arrangement of the low-beam first light incident structures <NUM> and the high-beam first light incident structures <NUM>, the distance between the first cut-off portion <NUM> corresponding to the low-beam first light incident structure <NUM> and the upper surface of the first light passage <NUM> is greater than the distance between the first cut-off portion <NUM> corresponding to the high-beam first light incident structure <NUM> and the upper surface of the first light passage <NUM>, that is to say, the first cut-off portion <NUM> corresponding to the high-beam first light incident structure <NUM> is higher than the first cut-off portion <NUM> corresponding to the low-beam first light incident structure <NUM>, such that there is a segment difference the first cut-off portion <NUM> corresponding to the low-beam first light incident structure <NUM> and the first cut-off portion <NUM> corresponding to the high-beam first light incident structure <NUM>. By providing the segment difference between the first cut-off portion <NUM> corresponding to the low-beam first light incident structure <NUM> and the first cut-off portion <NUM> corresponding to the high-beam first light incident structure <NUM>, the high-beam light shape and the low-beam light shape have a certain superposition, that is to say, the cut-off line of the high-beam light shape is located below the cut-off line of the low-beam light shape, and accordingly, the adjoining effect between the low beam and the high beam is better.

Further specifically, the intermediate connection surface <NUM> corresponding to the low-beam first light incident structure <NUM> is configured to tilt upwards from back to front, and the side of the intermediate connection surface <NUM> facing the first light passage <NUM> is configured as a reflecting surface; and the intermediate connection surface <NUM> corresponding to the high-beam first light incident structure <NUM> is configured to tilt downwards from back to front, and the side of the intermediate connection surface <NUM> departing from the first light passage <NUM> is also configured as a reflecting surface. Referring to <FIG>, light rays received by the low-beam first light incident structure <NUM> are subjected to a direction change by the light guide portion <NUM> and are emitted towards the first light passage <NUM>, then most light rays are directly transmitted to the first light emergent surface <NUM> after passing through the first light passage <NUM> and being cut off by the corresponding first cut-off portion <NUM> thereof, while other minor light rays are directed to the corresponding intermediate connection surface <NUM> thereof and reflected by the intermediate connection surface <NUM> to the inside of the first light passage <NUM> for further transmission, so as to improve the luminous efficiency. Those two parts of light rays commonly form a light shape having an auxiliary low-beam cut-off line after emerging from the first light emergent surface <NUM>. Referring to <FIG>, the high-beam first light incident structure <NUM> takes the corresponding light guide portion connection surface <NUM> as a primary high-beam light emergent surface and takes the light passage connection surface <NUM> as a secondary high-beam light incident surface. Light rays received by the high-beam first light incident structure <NUM> emerge from the corresponding light guide portion connection surface <NUM> after direction change by the light guide portion <NUM>. Most light rays directly enter the first light passage <NUM> through the corresponding light passage connection surface <NUM> after being cut off by the corresponding first cut-off portion <NUM>, and are transmitted to the first light emergent surface <NUM>, while other minor light rays are directed to the corresponding intermediate connection surface <NUM> thereof and reflected by the intermediate connection surface <NUM> to the corresponding light passage connection surface <NUM> and are further transmitted in the first light passage <NUM>, so as to improve the luminous efficiency. Those two parts of light rays commonly form a light shape having an auxiliary high-beam cut-off line after emerging from the first light emergent surface <NUM>.

Based on the above-mentioned first optical element according to the present invention, referring to <FIG>, this vehicle lamp optical unit further comprises a second optical element <NUM>; a notch for accommodating the second optical element <NUM> is formed on one side in the left and right direction of the first optical element <NUM>; the rear end face and the front end face of the second optical element <NUM> along the light emergent direction are respectively a light incident surface <NUM> and a second light emergent surface <NUM>; the light incident surface <NUM> is provided with at least one second light incident structure; and the second optical element <NUM> is configured to be capable of guiding light rays emerging from the second light emergent surface <NUM> to exit through the first light emergent surface <NUM>. The first optical element <NUM> and the second optical element <NUM> share the first light emergent surface <NUM>, which is more conducive to the combination of the light shapes of the two, such that the vehicle lamp optical unit forms a desired vehicle lamp light shape.

In order that the part of the first optical element <NUM> corresponding to the second optical element <NUM> and located in front thereof can form a single focus for forming a main low-beam cut-off line having an inflection point, the first optical element <NUM> is preferably provided with a secondary light incident surface <NUM>, the secondary light incident surface <NUM> is located in the rear of the first light emergent surface <NUM> and faces the notch, and the secondary light incident surface <NUM> comprises at least one curved surface protruding backwards.

As a preferred embodiment of the second optical element <NUM>, the light incident surface <NUM> is provided with multiple second light incident structures, and the multiple second light incident structures are configured to have at least one low-beam second light incident structure <NUM> and at least one high-beam second light incident structure <NUM>. The specific numbers of the low-beam second light incident structures <NUM> and the high-beam second light incident structures <NUM> may be configured according to requirements for the light shape formed by the second optical element <NUM>; moreover, it is preferred that those two are molded as a whole, hereby improving the installation accuracy of the vehicle lamp optical unit.

Preferably, each of the low-beam second light incident structures <NUM> and each of the high-beam second light incident structures <NUM> are respectively a collimating structure. The collimating structure may be a collimating element, such as a collimating cup, so as to improve the light efficiency.

Specifically, referring to <FIG> and <FIG>, the low-beam second light incident structure <NUM> is located above the high-beam second light incident structure <NUM>; the second light emergent surface <NUM> comprises a low-beam light emergent surface <NUM> located in front of the low-beam second light incident structure <NUM> and a high-beam light emergent surface <NUM> located at the light emergent end of the high-beam second light incident structure <NUM>; a second light passage <NUM> is provided between the light emergent end of the low-beam second light incident structure <NUM> and the low-beam light emergent surface <NUM>; and a second cut-off portion <NUM> for forming a second light shape cut-off line is provided at the connection between the bottom surface of the second light passage <NUM> and the low-beam light emergent surface <NUM>. The second light shape cut-off line may be a main low-beam cut-off line, or a main high-beam cut-off line. At this moment, referring to <FIG>, light rays received by the low-beam second light incident structure <NUM> are emitted to the second light passage <NUM> to be transmitted to the low-beam light emergent surface <NUM> through the second light passage <NUM>, and form a light shape having a main low-beam cut-off line via the second cut-off portion <NUM>; and light rays received by the high-beam second light incident structure <NUM> directly emerge from the high-beam light emergent surface <NUM> and form a light shape having a main high-beam cut-off line via the second cut-off portion <NUM>.

Further preferably, the lower surface of the second light passage <NUM> is configured as a reflecting surface. When partial light rays emitted by the low-beam second light incident structure <NUM> to the second light passage <NUM> are emitted to the lower surface of the second light passage <NUM>, they are reflected by the reflecting surface to the inside of the second light passage <NUM> to be further transmitted; when partial light rays directed by the high-beam light emergent surface <NUM> are emitted to the lower surface of the second light passage <NUM>, they are reflected by the reflecting surface to be further transmitted forwards, and the luminous efficiency can be improved by configuring the lower surface of the second light passage <NUM> as a reflecting surface. Typically, the low-beam light emergent surface <NUM> is configured as a curved surface protruding forwards, and specifically may be a curved surface protruding in up-down direction, or may also be a curved surface protruding in left-right direction, or may also be a curved surface protruding simultaneously in up-down direction and in left-right direction. This structure makes light rays emerging from the low-beam light emergent surface <NUM> more concentrated, and more light rays would enter the secondary light incident surface <NUM>, hereby further improving the luminous efficiency.

Based on the various specific embodiments of the vehicle lamp optical unit as described above, referring to <FIG>, a light guide <NUM> is further provided in the recess structure <NUM>, and the light emergent surface of the light guide <NUM> faces towards the light passage connection surface <NUM>, such that light rays emerging from the light emergent surface of the light guide <NUM> are transmitted to the first light emergent surface <NUM> through the first light passage <NUM>. The light guide <NUM> shares the first light emergent surface <NUM> with the first optical element <NUM> and the second optical element <NUM>, such that the vehicle lamp optical unit not only has the low-beam illumination function and/or the high-beam illumination function, but also has various illumination functions such as a low-beam III zone, a daytime running lamp or a position lamp, while occupied space is small. It shall be clarified that when the first optical element <NUM> is provided with a high-beam first light incident structure <NUM>, there is a certain distance between the light guide <NUM> and the intermediate connection surface <NUM> of the recess structure <NUM>, such that emergent light rays of the light guide portion connection surface <NUM> corresponding to the high-beam first light incident structure <NUM> can pass through and be emitted to the corresponding light passage connection surface <NUM> thereof, the minimum distance L between the two is set to ≤ <NUM>, preferably, <NUM> ≤ L ≤ <NUM>; and when the first optical element <NUM> is only provided with a low-beam first light incident structure <NUM>, the distance L may be set to <NUM>.

In a preferred specific embodiment of the vehicle lamp optical unit according to the present invention, referring to <FIG> and in combination with <FIG>, the vehicle lamp optical unit comprises a first optical element <NUM> and a second optical element <NUM>. The rear end face and the front end face of the first optical element <NUM> along a light emergent direction are respectively a light incident structure reference plane <NUM> and a first light emergent surface <NUM>. The projection plane shapes of the first light emergent surface <NUM> and the light incident structure reference plane <NUM> along the light emergent direction are respectively a strip-shape extending left and right. The rear end of the first optical element <NUM> is formed as a light incident portion, the light incident portion comprises a first light incident structure provided along the left and right direction of the light incident structure reference plane <NUM>. A first light passage <NUM> is formed between the light incident portion and the first light emergent surface <NUM>. The first light emergent surface <NUM> is a curvature continuous curved surface protruding forwards. The first light incident structure is configured to have six low-beam first light incident structures <NUM> and four high-beam first light incident structures <NUM>. The low-beam first light incident structures <NUM> and the high-beam first light incident structures <NUM> are arranged alternately. Each of the low-beam first light incident structures <NUM> and each of the high-beam first light incident structures <NUM> respectively comprises a collimator <NUM> located on the lower side of the light incident structure reference plane <NUM> and a light guide portion <NUM>. The light guide portion <NUM> extends from the light emergent end of the collimator <NUM> to the rear end of the first light passage <NUM>. The light guide portion <NUM> is provided with a reflecting portion <NUM>, and the reflecting portion <NUM> can reflect the emergent light of the collimator <NUM> to a direction towards the first light passage <NUM> for emergence. A recess structure <NUM> corresponding to the light guide portion <NUM> is respectively provided at the connection between the first light passage <NUM> and each of the light guide portions <NUM>. Each of the recess structures <NUM> respectively comprises a light guide portion connection surface <NUM> in connection with the light guide portion <NUM> corresponding to the recess structure <NUM>, an intermediate connection surface <NUM> in connection with the light guide portion connection surface <NUM>, and an light passage connection surface <NUM> in connection with the intermediate connection surface <NUM>. A first cut-off portion <NUM> forming a first light shape cut-off line is provided at the connection between the intermediate connection surface <NUM> and the light passage connection surface <NUM>, and the first cut-off portion <NUM> is located on the median surface of the first light emergent surface <NUM>. The distance between the first cut-off portion <NUM> corresponding to the low-beam first light incident structure <NUM> and the upper surface of the first light passage <NUM> is greater than the distance between the first cut-off portion <NUM> corresponding to the high-beam first light incident structure <NUM> and the upper surface of the first light passage <NUM>. The intermediate connection surface <NUM> corresponding to the low-beam first light incident structure <NUM> is configured to tilt upwards from back to front, and the side of the intermediate connection surface <NUM> facing the first light passage <NUM> is a reflecting surface. The intermediate connection surface <NUM> corresponding to the high-beam first light incident structure <NUM> is configured to tilt downwards from back to front, and the side of the intermediate connection surface <NUM> departing from the first light passage <NUM> is a reflecting surface. A notch for accommodating the second optical element <NUM> is formed on the right side in the left and right direction of the first optical element <NUM>, a secondary light incident surface <NUM> is located in the rear of the first light emergent surface <NUM> and faces the notch, and the secondary light incident surface <NUM> comprises two curved surface protruding backwards, which are arranged in the left and right direction. The rear end face and the front end face of the second optical element <NUM> along the light emergent direction are respectively a light incident surface <NUM> and a second light emergent surface <NUM>. The second light emergent surface <NUM> is arranged to face the secondary light incident surface <NUM>. The light incident surface <NUM> is provided with two low-beam second light incident structures <NUM> and two high-beam second light incident structures <NUM>. The low-beam second light incident structure <NUM> is located above the high-beam second light incident structure <NUM>. The light emergent end of the high-beam second light incident structure <NUM> is configured as a high-beam light emergent surface <NUM>. The front end of the low-beam second light incident structure <NUM> is successively provided with a second light passage <NUM> and a low-beam light emergent surface <NUM>. A second cut-off portion <NUM> for forming a second light shape cut-off line is provided at the connection between the bottom surface of the second light passage <NUM> and the low-beam light emergent surface <NUM>. The upper and lower sides of the lower surface of the second light passage <NUM> are both configured as reflecting surfaces. The low-beam light emergent surface <NUM> is configured as a curved surface protruding forwards. A light guide <NUM> for forming the light shape of a daytime running lamp may further be provided in the recess structure <NUM>. The light emergent surface of the light guide <NUM> faces the light passage connection surface <NUM>, and the minimum distance L between the light guide <NUM> and the intermediate connection surface <NUM> is set to <NUM>.

In the above embodiment of the vehicle lamp optical unit, referring to <FIG> and in combination with <FIG>, turning on the light source <NUM> corresponding to the low-beam first light incident structure <NUM>, the collimator <NUM> corresponding to the low-beam first light incident structure <NUM> receives light rays and emits the same to the light guide portion <NUM>, the light rays are reflected by the reflecting portion <NUM> on the light guide portion <NUM> to the direction towards the first light passage <NUM> for emergence, and the light rays are transmitted to the first light emergent surface <NUM> through the first light passage <NUM> and form an auxiliary low-beam light shape b having an auxiliary low-beam cut-off line via the corresponding first cut-off portion <NUM> thereof; when turning on the light source <NUM> corresponding to the high-beam first light incident structure <NUM>, the collimator <NUM> corresponding to the high-beam first light incident structure <NUM> receives light rays and emits the same to the light guide portion <NUM>, the light rays emerge from the corresponding light guide portion connection surface <NUM> after direction change through the reflection by the reflecting portion <NUM> on the light guide portion <NUM>, and enter the first light passage <NUM> through the corresponding light passage connection surface <NUM> and are transmitted to the first light emergent surface <NUM>, while forming an auxiliary high-beam light shape c having an auxiliary high-beam cut-off line via the corresponding first cut-off portion <NUM> thereof; turning on the light source corresponding to the low-beam second light incident structure <NUM>, light rays received by the low-beam second light incident structure <NUM> are emitted to the second light passage <NUM> and transmitted to the low-beam light emergent surface <NUM> through the second light passage <NUM>, then emerge via the first light emergent surface <NUM> after incident from the secondary light incident surface <NUM>, and form a main low-beam light shape a having a main low-beam cut-off line via the second cut-off portion <NUM>; turning on the light source corresponding to the high-beam second light incident structure <NUM>, light rays received by the high-beam second light incident structure <NUM> directly emerge from the high-beam light emergent surface <NUM>, and emerge from the first light emergent surface <NUM> after entering from the secondary light incident surface <NUM>, and form a main high-beam light shape d having a main high-beam cut-off line via the second cut-off portion <NUM>; and turning on the light source corresponding to the light guide <NUM> (the light source is provided at one end of the light guide <NUM>), the light rays thereof emerge from the light emergent surface of the light guide <NUM> and enter the first light passage <NUM> through the light passage connection surface <NUM>, then are transmitted to the first light emergent surface <NUM> through the first light passage <NUM> and form a low-beam III-zone light shape or a daytime running lamp light shape or a position lamp light shape.

When being applied in a vehicle lamp module, the vehicle lamp optical unit as described above can realize various illumination functions such as low beam, high beam, and daytime running lamp. When light sources corresponding to the low-beam first light incident structure <NUM> and the low-beam second light incident structure <NUM> are turned on, it is the low-beam illumination mode for the vehicle lamp, and when the light sources corresponding to the high-beam first light incident structure <NUM> and the high-beam second light incident structure <NUM> are turned on, it is switched to the high beam illumination mode. After all the light sources corresponding to the low-beam illumination mode and the high beam illumination mode are turned off, the function of the daytime running lamp can be realized just by turning on the light source corresponding to the light guide <NUM>. As a way for forming a vehicle lamp light shape, after that light sources <NUM> corresponding to each first light incident structure and each second light incident structure have been lit up, partial light shapes of the low beam or the high beam of the vehicle lamp are formed through projection by the first light emergent surface <NUM> of the first optical element <NUM>. The respective partial light shapes form a complete low beam or high beam light shape by splicing. At this moment, in cooperation with the on-off controller of the respective light sources <NUM>, specific welcome or shutting-down mode of the vehicle lamp can be realized by lighting up the light sources <NUM> in a certain order when the vehicle lamp is lit up or shut down. For example, as shown in <FIG> and <FIG>, the low-beam light shape of the vehicle lamp is divided into nine areas. When the low beam of the vehicle lamp is turned on, light sources <NUM> corresponding to the nine areas are lit up one by one from left to right, so as to form light shapes of the nine areas in order, which are shown as ①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧ and ⑨, hereby realizing the welcome mode of the vehicle lamp and ultimately forming a complete low-beam light shape.

Based on the above-mentioned vehicle lamp optical unit according to the present invention, referring to <FIG>, a second aspect of the present invention provides a vehicle lamp module, comprising a vehicle lamp optical unit according to any one of the above-mentioned embodiments, and light sources <NUM> provided in one-to-one correspondence with the first light incident structures, wherein each of the light sources <NUM> is capable of being controlled individually to be turned on or turned off. Therefore, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments of the vehicle lamp optical unit.

A third aspect of the present invention provides a vehicle, comprising a vehicle lamp module as described above. Therefore, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments of the vehicle lamp optical unit and the vehicle lamp module.

Claim 1:
A vehicle lamp optical unit, comprising a first optical element (<NUM>), wherein a rear end face and a front end face of the first optical element (<NUM>) along a light emergent direction are respectively a light incident structure reference plane (<NUM>) and a first light emergent surface (<NUM>), a rear end of the first optical element (<NUM>) is formed as a light incident portion, the light incident portion comprises at least one first light incident structure provided along the left and right direction of the light incident structure reference plane (<NUM>), and a first light passage (<NUM>) is formed between the light incident portion and the first light emergent surface (<NUM>),
wherein the first light incident structure is configured to extend from an upper side or a lower side of the light incident structure reference plane (<NUM>) to the first light passage (<NUM>), each of the first light incident structures is capable of guiding light rays received by the first light incident structure to be emitted towards the first light passage (<NUM>) and be transmitted to the first light emergent surface (<NUM>) along the first light passage (<NUM>),
characterized in that the vehicle lamp optical unit further comprises a second optical element (<NUM>); a notch for accommodating the second optical element (<NUM>) is formed on a side in the left and right direction of the first optical element (<NUM>); the rear end face and the front end face of the second optical element (<NUM>) along the light emergent direction are respectively a light incident surface (<NUM>) and a second light emergent surface (<NUM>); the light incident surface (<NUM>) is provided with at least one second light incident structure; and
the first optical element (<NUM>) is provided with a secondary light incident surface (<NUM>), the secondary light incident surface (<NUM>) is located in a rear of the first light emergent surface (<NUM>) and faces the notch, and the secondary light incident surface (<NUM>) comprises at least one curved surface protruding backwards,and
the second optical element (<NUM>) is configured to be capable of guiding light rays emerging from the second light emergent surface (<NUM>) to exit through the first light emergent surface (<NUM>), after incident from the secondary light incident surface (<NUM>).