Patent ID: 12228260

DESCRIPTION OF REFERENCE SIGNS

1 light incident part11 high-beam incident part12 auxiliary lighting structure13 auxiliary lighting incident surface131 vertical light incident surface132 oblique light incident surface14 first reflecting surface15 second reflecting surface16 light incident structure2 light guide part3 light emitting part4 light-tight housing5 circuit board6 high-beam source7 auxiliary lighting source8 heat radiator

Detailed Description of the Embodiments

The specific embodiments of the present disclosure are described in detail in combination with the following drawings, and it should be understood that the specific embodiments described here are only used for describing and explaining the present disclosure, and the protection scope of the present disclosure is not limited to the following specific embodiments.

In the description of the present disclosure, it needs to be explained that, some of orientation words involved in the following description to clearly illustrate the technical solutions of the present disclosure, for example, “front”, “rear”, “left”, “right”, “up”, “down”, or the like, have meanings provided by analogy according to the orientation indicated by the light transmission direction. For example, taking a high-beam optical element as an example, an end of the high-beam optical element close to a high-beam source6refers to rear, and an end of the high-beam optical element away from the high-beam source6refers to front. It also should be understood that an end at which a light incident part1of the high-beam optical beam is positioned refers to rear, and an end at which a light emitting part3is positioned refers to front. Relative to front and rear directions of the high-beam optical element, directions represented by left and right sides of the high-beam optical element are left and right directions, and directions represented by upper and lower sides of the high-beam optical element are up and down directions.

In the description of the present disclosure, it should be noted that, unless otherwise expressly specified and defined, the terms “mount” and “connection” should be understood in a broad sense, for example, it may be fixed connection, detachable connection, or integrated connection; it may be direct connection or indirect connection through an intermediate medium, and it may be internal communication of two elements or refers to an interaction relationship between the two elements. Those skilled in the art may understand the specific meanings of the above terms in the present disclosure according to specific conditions. In the present disclosure, a transverse section line refers to a section line obtained by sectioning a certain plane through a cross section in a horizontal direction, and a longitudinal section line refers to a section line obtained by sectioning a certain plane through a cross section extending in a front-rear direction.

The present disclosure provides a high-beam optical element. Referring toFIGS.1to11, the high-beam optical element includes a light incident part1, a light guide part2and a light emitting part3which are sequentially arranged from back to front. The light incident part1includes a high-beam incident part11and an auxiliary lighting structure12. Light incident to the auxiliary lighting structure12is transmitted to the light guide part2by the auxiliary lighting structure12after at least one reflection, then is transmitted to the light emitting part3by the light guide part2, and is projected into a low-beam III region by a light emitting surface of the light emitting part3.

In the present disclosure, the light incident part1, the light guide part2, and the light emitting part3can be independently arranged or integrally formed to ensure the accuracy of relative positions therebetween, and may employ materials such as transparent plastic, silicone and glass, wherein the plastic may employ PMMA or PC.

In order to better illustrate the working process of the high-beam optical element provided by the present disclosure, detailed descriptions and explanations are provided below in combination with the high-beam optical element applied to a high-beam illumination unit. A high-beam source6corresponding to the high-beam incident part11, and an auxiliary lighting source7corresponding to the auxiliary lighting structure12are arranged in the high-beam illumination unit. The working process of the high-beam illumination unit is as follows: In a low-beam illumination mode, the auxiliary lighting source7is turned on, and light emitted by the auxiliary lighting source7is incident to the auxiliary lighting structure12, is reflected by the auxiliary lighting structure12for at least one time, then is transmitted to the light guide part2, is subsequently transmitted to the light emitting part3directly by the light guide part2, and is projected into the low-beam III region by the light emitting surface of the light emitting part3. The light in the III region may be emitted obliquely upward from the inside of a vehicle lamp to illuminate a sign board or the like on the road. Therefore, when a person stands in front of the vehicle lamp, this part of light is directed directly to the human eyes obliquely upward, making this person see that the high-beam illumination unit also emits light, and achieving a visual effect of lighting of the high-beam illumination unit in the low-beam illumination mode. At this time, the light incident to the auxiliary lighting structure12is reflected and then is directly transmitted and projected by the light guide part2and the light emitting part3into the low-beam III region, which not only creates a visual effect of the upper beam lighting unit's light output surface being illuminated. but also compared with a solution that light is subjected to total reflection in the light emitting part3, and is utilized to form light subjected to diffuse reflection via impurities in the light emitting part3, and the light subjected to diffuse reflection is incident to the human eyes to achieve the light emitting effect of the high-beam illumination unit, the high-beam optical element in the present disclosure is employed to make the high-beam illumination unit seen brighter, such that the lighting brightness of the high-beam illumination unit is more easily consistent with the brightness of a low-beam illumination unit, thereby achieving a better lighting effect of the appearance style of the vehicle lamp, and improving the aesthetics of the appearance style of the vehicle lamp. In a high-beam mode, the high-beam source6is turned on, and light emitted from the high-beam source6enters from a light incident surface of the high-beam incident part11, is transmitted to the light guide part2by the high-beam incident part11, is transmitted to the light emitting part3by the light guide part2, and finally is emitted by the light emitting surface of the light emitting part3to form high-beam illumination light.

As a preferred embodiment of the present disclosure, the auxiliary lighting structure12includes an auxiliary lighting incident surface13, a first reflecting surface14and a second reflecting surface15. A rear end surface of the auxiliary lighting structure12is formed as the auxiliary lighting incident surface13. The first reflecting surface14can reflect light received by the auxiliary lighting incident surface13to the second reflecting surface15, and the second reflecting surface15can reflect light reflected to the second reflecting surface15by the first reflecting surface14to the light guide part2. The arrangement of the first reflecting surface14and the second reflecting surface15not only enable the light received by the auxiliary light incident surface13to be efficiently transmitted to the light guide part2, but also enable the light to form a certain degree of diffusion separately through the reflection of the first reflection surface14and the reflection of the second reflection surface15, thereby achieving a more uniform light shape projected by the light emitting surface of the light emitting part3and lowering the illuminance of the light shape. At this time, an optical path diagram after lighting of the auxiliary lighting source7is as shown inFIG.17, and light projected by the light emitting surface of the light emitting part3is projected onto a light distribution screen to form an auxiliary lighting shape as shown inFIG.18.

In the present disclosure, the auxiliary lighting structure12may be located at any one of positions above, below, on the left or right of the high-beam incident part11. Specifically, the structural form of the auxiliary lighting structure12and the high-beam incident part11may be determined according to actual production and use demands. Preferably, the auxiliary lighting structure12is located below the high-beam incident part11, and the first reflecting surface14is located below the second reflecting surface15, which facilitates the structural design of the high-beam optical element to reduce or avoid the influence on low-beam illumination when applied to the vehicle lamp.

In the present disclosure, the auxiliary lighting incident surface13is preferably planar, and has a simple structure and good manufacturability. Besides, the auxiliary lighting incident surface13may be a convexly curved surface in order to emit more light incident to the auxiliary lighting incident surface13to the first reflecting surface14, thereby improving the light utilization rate of the auxiliary lighting structure12. As a preferred embodiment of the auxiliary lighting incident surface13, referring toFIGS.7to11, the auxiliary lighting incident surface13includes a vertical light incident surface131and an oblique light incident surface132, wherein the oblique light incident surface132is arranged to extend obliquely forward and downward from a bottom end of the vertical light incident surface131. In the case that the auxiliary lighting incident surface13is a planar surface extending up and down, part of light emitted to a lower half part of the auxiliary lighting incident surface13by the auxiliary lighting source7is reflected by the first reflecting surface14and then is directly emitted by the light emitting part3without being reflected by the second reflecting surface15, so that this part of light is projected at higher illuminance, which is prone to exceeding statutory requirements for illuminance of the low-beam III region. Due to the oblique arrangement of the oblique light incident surface132, a direction in which light received by the light incident surface is reflected by the first reflecting surface14is changed, such that light incident to the oblique light incident surface132is reflected and diffused by the second reflecting surface15as much as possible before being projected by the light emitting surface of the light emitting part3to avoid an overabundance of illuminance of the projected light, thereby forming a more uniform light shape can be formed. Moreover, light received by the light incident surface can be reduced to further reduce light emitted directly after reflection by the first reflecting surface14, and light projected by the light emitting surface of the light emitting part3is projected on the light distribution screen to form an auxiliary lighting shape as shown inFIG.19, that is more uniform and has lower illuminance than the auxiliary lighting shape as shown inFIG.18.

As a preferred embodiment of the first reflecting surface14and the second reflecting surface15, referring toFIGS.4,6and10, a longitudinal section line of the first reflecting surface14is provided as a forward convex curve, and a transverse section line of the first reflecting surface14is provided as a backward concave curve. A longitudinal section line and a transverse section line of the second reflecting surface15are respectively provided as backward convex curves. The arrangement of the transverse section line of the first reflecting surface14and the transverse section line of the second reflecting surface15can guarantee the thickness between the two reflecting surfaces, avoiding the formation of an unstable structure with a thick middle and thin sides. The arrangement of the longitudinal section line of the first reflecting surface14and the longitudinal section line of the second reflecting surface15enable the two reflecting surfaces cooperate to reflect light incident from the auxiliary lighting incident surface13into the light guide part2as much as possible, thereby reducing light reflected to regions other than the light guide part2, and improving the lighting effect. Furthermore, by setting the width of the second reflecting surface15reasonably, it is possible to make light reflected by the second reflecting surface15be reflected exactly into the light emitting part3, ensuring light flux at an edge region of the light emitting part3, and also favoring the light emitting effect and uniformity of a light emitting shape.

Further preferably, referring toFIGS.7,10and11, a light diffusion structure is arranged on the second reflecting surface15. The light diffusion structure can be a number of block-shaped bumps, block-shaped recesses, striped bumps, striped recesses or other structures capable of changing the shape of the second reflecting surface15, in order to change the reflection direction of light incident to the second reflecting surface15such that light reflected by the second reflecting surface15is more dispersed, thereby reducing the illuminance of the light shape formed after transmission by the light guide part2and projection by the light emitting part3, and improving the light shape uniformity to comply with the statutory requirements of the illuminance of the light shape at the low-beam III region.

As another preferred embodiment of the present disclosure, referring toFIGS.13to16, a light-tight housing4is arranged or integrally formed on an outer side surface of the light guide part2. The light-tight housing4and the light guide part2may be integrally molded by double-shot molding, insert molding, or other molding modes, which are fall within the protection scope of the present disclosure, as long as the light-tight housing4can be formed outside the light guide part2. At this time, light entering the light guide part2by reflection of the auxiliary lighting structure12and light entering the light guide part2by the high-beam incident part11can be absorbed by the light-tight housing4when transmitted to a side surface of the light guide part2, such that light emitted by the high-beam source6and the auxiliary lighting source7is prevented from being emitted from regions other than the light emitting surface of the light emitting part3to avoid forming stray light, thereby avoiding affecting the light emitting effect.

As yet another preferred embodiment of the present disclosure, the high-beam incident part11includes at least one light incident structure16. A rear end surface of each of the light incident structures16is provided as a backward convex curved surface or conical surface, and the light incident structures16are arranged in a matrix mode. The light incident structures16are set to at least one row. The rear end surfaces of the light incident structures16are each provided as a backward convex curved surface or conical surface to converge incident light. Optionally, the light incident structures16are arranged in one row, two rows or a plurality of rows, and the light incident structures16are connected in sequence or arranged at intervals. The light emitting surface of the light emitting part3is provided as a forward convex surface formed by splicing a plurality of planar surfaces or curved surfaces in a grid-like distribution, such that light emitted through the light emitting surface of the light emitting part3is diffused by a certain angle, thereby increasing a boundary angle of the light shape formed by the emergent light, and meanwhile, improving the light shape uniformity.

In a second aspect, the present disclosure provides a high-beam illumination unit. Referring toFIGS.12to16, the high-beam illumination unit includes the above high-beam optical element, a circuit board5, a high-beam source6arranged in correspondence with the high-beam incident part11, and an auxiliary lighting source7arranged in correspondence with the auxiliary lighting structure12, wherein the high-beam source6and the auxiliary lighting source7are arranged on the circuit board5.

Optionally, the high-beam illumination unit is also provided with a heat radiator8, a heat dissipation support, or other structures for providing support and heat dissipation functions to the circuit board5and the high-beam optical element. When the light-tight housing4is arranged or integrally formed on the outer side surface of the light guide part2, the light-tight housing4can be connected to the circuit board5and the heat radiator8to support the high-beam optical element.

In a relatively preferred embodiment of the present disclosure, the high-beam illumination unit includes a high-beam optical element, a circuit board5, a light source located on the circuit board5, and a heat radiator8connected to the circuit board5. The high-beam optical element includes a light incident part1, a light guide part2and a light emitting part3which are sequentially arranged and integrally formed from rear to front. The light incident part1includes a high-beam incident part11and an auxiliary lighting structure12located below the high-beam incident part11. The auxiliary lighting structure12includes an auxiliary lighting incident surface13, a first reflecting surface14and a second reflecting surface15located above the first reflecting surface14, and a rear end surface of the auxiliary lighting structure12is formed as the auxiliary lighting incident surface13. The auxiliary lighting incident surface13includes a vertical light incident surface131and an oblique light incident surface132, wherein the oblique light incident surface132is arranged to extend obliquely forward and downward from a bottom end of the vertical light incident surface131. The first reflecting surface14can reflect light received by the auxiliary lighting incident surface13to the second reflecting surface15, and the second reflecting surface15can reflect light reflected to the second reflecting surface15by the first reflecting surface14to the light guide part2. A longitudinal section line of the first reflecting surface14is provided as a forward convex curve, and a transverse section line of the first reflecting surface is provided as a backward concave curve. A longitudinal section line and a transverse section line of the second reflecting surface15are respectively provided as backward convex curves, and the second reflecting surface15is provided with a light diffusion structure formed by a plurality of block-shaped bumps. A light-tight housing4is arranged or integrally formed on an outer side surface of the light guide part2. A light emitting surface of the light emitting part3is provided as a forward convex surface formed by splicing a plurality of curved surfaces in a grid-like distribution. The high-beam incident part11includes a plurality of light incident structures16, a rear end surface of each light incident structure16is provided as a backward convex curved surface or conical surface, and the light incident structures16are arranged in a row. The light source includes a high-beam source6arranged in correspondence with the high-beam incident part11and an auxiliary lighting source7arranged in correspondence with the auxiliary lighting structure12.

For the high-beam illumination unit described in the above embodiment, in a high-beam mode, the high-beam source6is turned on, and the auxiliary lighting source7is turned off. Light emitted by the high-beam source6enters the light guide part2after converged by the light incident structure16, is transmitted to the light emitting part3by the light guide part2, and finally is emitted by the light emitting surface of the light emitting part3to form high-beam illumination light. In the low-beam illumination mode, the auxiliary lighting source7is turned on, and the high-beam source6is turned off. Light emitted by the auxiliary lighting source7is incident to the auxiliary lighting incident surface13, then is reflected and diffused by the first reflecting surface14to the second reflecting surface15, enters the light guide part2after reflected and diffused by the second reflecting surface15, is transmitted to the light emitting part3by the light guide part2, and finally is projected by the light emitting surface of the light emitting part3into the low-beam III region at a certain diffusion angle to form an auxiliary lighting shape as shown inFIG.19, thereby achieving the lighting effect of the high-beam illumination unit in the low-beam illumination mode. The light-tight housing4can prevent light emitted by the high-beam source6and the auxiliary lighting source7from being emitted from regions other than the light emitting surface of the light emitting part3to avoid forming stray light.

Further, in a third aspect, the present disclosure also provides a vehicle, including the high-beam illumination unit according to the technical solution in the second aspect. A plurality of high-beam illumination units are arranged, and the plurality of high-beam illumination units are integrally arranged or dispersed in a vehicle lamp. Optionally, the high-beam illumination units are distributed in the vehicle lamp in longitudinally, horizontally or obliquely. The vehicle provided by the present disclosure at least has all the beneficial effects provided by the solutions in the embodiments of the above high-beam optical element and high-beam illumination unit. The constitution and operation of the vehicle according to the embodiments of the present disclosure are understandable and easily implementable to those skilled in the art, and therefore will not be described in detail.

As can be seen from the above description, the high-beam optical element of the present disclosure is provided with the auxiliary lighting structure12on one side of the high-beam incident part11. Light incident to the auxiliary lighting structure12is transmitted to the light guide part2after at least one reflection, then is transmitted to the light emitting part3by the light guide part2, and subsequently is projected into the low-beam III region by the light emitting surface of the light emitting part3. When a person stands in front of a vehicle lamp, this part of light is directed directly to the human eyes obliquely upward, making this person see that the high-beam illumination unit also emits light, and achieving a visual effect of lighting of the light emitting surface in the low-beam illumination mode. The light incident to the auxiliary lighting structure12is directly transmitted and projected by the light guide part2and the light emitting part3, and compared with the solution that light is subjected to total reflection in the light emitting part3, and is utilized to form light subjected to diffuse reflection via impurities in the light emitting part3, and the light subjected to diffuse reflection is directed to the human eyes to achieve the light emitting effect of the high-beam illumination unit, the high-beam optical element in the present disclosure is employed to make the high-beam illumination unit seen brighter, such that the lighting brightness of the high-beam illumination unit is more easily consistent with the brightness of a low-beam illumination unit in the statutory scope of illuminance of the light shape in the low-beam III region, thereby achieving a better lighting effect of the appearance style of the vehicle lamp.

The preferred embodiments of the present disclosure are described in detail in combination with the drawings, but the present disclosure is not limited to the specific details in the above embodiments. Various simple variations can be made to the technical solutions of the present disclosure in the scope of the technical concept of the present disclosure, and these simple variations all fall within the protection scope of the present disclosure.

In addition, it should be noted that all the specific technical features described in the specific embodiments can be combined in any appropriate mode under the non-contradictory condition, and all possible combination modes will not be described separately in order to avoid unnecessary repetition.

In addition, various different embodiments of the present disclosure can also be combined optionally, and as long as the embodiments do not violate the idea of the present disclosure, the embodiments also should be regarded as the content disclosed by the present disclosure.