CN217684743U - Car light leaded light spare - Google Patents
Car light leaded light spare Download PDFInfo
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- CN217684743U CN217684743U CN202221262392.5U CN202221262392U CN217684743U CN 217684743 U CN217684743 U CN 217684743U CN 202221262392 U CN202221262392 U CN 202221262392U CN 217684743 U CN217684743 U CN 217684743U
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Abstract
The utility model discloses a car light leaded light spare, include: the incident part comprises linear light homogenizing groups which are sequentially arranged along the width direction, the linear light homogenizing groups extend along the length direction and are distributed on two boundaries of the light guide part, and the linear light homogenizing groups are positioned on the same plane; the light-emitting position includes a plurality of annular spotlight groups that arrange in proper order along length direction, just annular spotlight group is covered with two borders of leaded light spare along width direction, annular spotlight group is located the coplanar, just linear even light group all is the sawtooth structure with annular even light group, the sawtooth prong of linear even light group is located the coplanar, the sawtooth prong of annular spotlight group is located the coplanar, under the prerequisite of guaranteeing light efficiency, reduces the leaded light spare size.
Description
Technical Field
The utility model relates to a car light technical field, concretely relates to car light leaded light spare.
Background
At present, the automobile front lighting lamp on the market comprises a light source and a light guide part for optically processing light, wherein the light guide part forms an incident surface corresponding to the light source, and forms a light emergent surface corresponding to a lampshade, wherein the incident surface mainly has the function of homogenizing and collimating the light, so that the light is converged to the incident surface to be emitted, and the expected light emergent effect is achieved.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a car light leaded light spare, under the prerequisite of guaranteeing light efficiency, reduces leaded light spare size.
The above technical object of the present invention can be achieved by the following technical solutions: a vehicle lamp light guide, comprising:
the incident part comprises linear light homogenizing groups which are sequentially arranged along the width direction, the linear light homogenizing groups extend along the length direction and are distributed on two boundaries of the light guide part, and the linear light homogenizing groups are positioned on the same plane;
the light-emitting part comprises a plurality of annular light-gathering groups which are sequentially arranged along the length direction, the two boundaries of the light-guiding part are fully distributed along the width direction by the annular light-gathering groups, the annular light-gathering groups are located on the same plane, the linear light-gathering groups and the annular light-gathering groups are of sawtooth structures, sawtooth tips of the linear light-gathering groups are located on the same plane, and the sawtooth tips of the annular light-gathering groups are located on the same plane.
Further, the linear light-homogenizing group forms a first curved surface in the width direction through a connecting line of end points of tooth roots of the sawtooth-shaped structures, and the annular light-concentrating group forms a second curved surface in any direction through a connecting line of end points of tooth roots of the sawtooth-shaped structures.
Further, the surface types of the first curved surface and the second curved surface both satisfy:
Further, the sawtooth-shaped structure comprises a linear sawtooth group and an annular sawtooth group, the linear sawtooth group is used for forming a linear light-homogenizing group, the annular sawtooth group is used for forming an annular light-condensing group, a first light-condensing area is formed in the middle line of the linear sawtooth group along the length direction, the teeth of the linear sawtooth group all have the tendency of inclining towards the first light-condensing area, a second light-condensing area is formed in the center of each annular sawtooth group, and the second light-condensing area and the first light-condensing area are oppositely arranged on the light guide member.
Further, annular sawtooth group is including a plurality of concentric annular sawtooth that set up to and radial arc sawtooth that arranges in proper order, and the arc sawtooth is concentric with annular sawtooth, and the arc sawtooth is covered with all around the border at the leaded light spare of rectangle, lies in the external diameter of the annular sawtooth in radial outside and the width phase-match of leaded light spare.
Further, the teeth on the annular sawtooth group have different inclination angles, and the teeth on the linear sawtooth group have different inclination angles.
Further, the inclination angles of the teeth on the annular sawtooth group and the linear sawtooth group are gradually increased towards the light condensation center.
Further, the tooth depth of the annular sawtooth group and the linear sawtooth group is 0.5mm, the R angle between teeth is 0.02mm, and the thickness of the light guide member is 3mm.
Further, the ratio of the total incident amount of the incident part to the maximum illumination of the light emergent part satisfies the following conditions: 0.18 to 0.205.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect: the incident part is composed of a plurality of linear sawtooth groups, the linear sawteeth can be densely arranged in the width direction of the light guide part to play a role of light homogenization on the incident surface, the light is ensured to have uniform light homogenization on the whole incident part and a guide effect of converging towards the first light converging region, the light is guided by the incident part and then enters the light emergent part, and the light emergent part is composed of three annular light converging groups, so that the light can be converged and emergent towards the second light converging region of each annular light converging group, the superposition of the emergent light is facilitated, and the uniform irradiation of the light is further improved;
annular spotlight group and linear even light group constitute by sawtooth structure, under the prerequisite of guaranteeing sufficient illuminance for leaded light spare can be with the plate-like design, thereby under the same overall dimension, and under the prerequisite of close light yield, make leaded light spare can design into littleer size thickness, reduce the weight of leaded light spare, thereby be convenient for assembly and transportation.
Drawings
Fig. 1 is a schematic structural view of a light emitting portion of the present invention;
fig. 2 is a schematic structural view of an incident portion of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 1;
FIG. 4 is an enlarged view at B in FIG. 2;
fig. 5 is a schematic view of the annular light-gathering unit of the present invention;
fig. 6 is a schematic view of a linear dodging group according to the present invention;
fig. 7 is a cross-sectional view of the light guide member of the present invention in the width direction;
fig. 8 is a cross-sectional view of the light guide member of the present invention in the length direction;
fig. 9 is a schematic diagram illustrating the forward simulated illumination according to the present invention;
fig. 10 is a schematic view of a light pattern and illumination according to the present invention;
in the figure: 1. an incident site; 2. a light emitting portion; 3. a linear dodging group; 4. an annular light-gathering group; 5. a linear set of serrations; 6. an annular set of serrations; 6.1, annular saw teeth; 6.2, arc-shaped saw teeth; 7. a first light-condensing area; 8. a second region of light condensation; 9. a support leg;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any direction or order of limitation.
As shown in fig. 1 to 10, a light guide for a vehicle lamp includes:
the incident part 1 comprises linear light homogenizing groups 3 which are sequentially arranged along the width direction, the linear light homogenizing groups 3 extend along the length direction and are fully distributed on two boundaries of the light guide part, and the linear light homogenizing groups 3 are positioned on the same plane;
light-emitting portion 2, including a plurality of annular spotlight group 4 that arrange in proper order along length direction, just annular spotlight group 4 is covered with the both sides border of leaded light spare along width direction, annular spotlight group 4 is located the coplanar, just linear even light group 3 and the even light group of annular are serration structure, the sawtooth prong of linear even light group 3 is located the coplanar, the sawtooth prong of annular spotlight group 4 is located the coplanar.
The annular light gathering group 4 and the linear light homogenizing group 3 are composed of a saw-toothed structure and adopt a Fresnel lens, so that the light guide piece can be designed in a plate shape, the light guide piece can be designed to be smaller in size and thickness under the same overall dimension and on the premise of similar light output amount, and sufficient illumination can be ensured, thereby facilitating assembly and transportation.
Specifically, the linear dodging group 3 forms a first curved surface in the width direction through a connecting line of end points of tooth roots of the saw-toothed structure, and the annular dodging group 4 forms a second curved surface in any direction through a connecting line of end points of tooth roots of the saw-toothed structure.
Specifically, the surface types of the first curved surface and the second curved surface both satisfy:
wherein Z is the distance rise from the fixed point of the optical surface when the height is h along the optical axis direction; c is paraxial curvature; k is a conic coefficient; r is the distance from a point on the optical surface to the optical axis; a is 1 、a 2 、a 3 、a 4 、a 5 、a 6 、a 7 、a 8 Are all high order coefficient.
Table 1 below shows the cone coefficients k and a of the incident and emergent portions of this example 1 To a 6 The coefficients of the respective high-order terms of (c).
TABLE 1
In this embodiment, leaded light spare adopts the PMMA material, leaded light spare is the long shape plate body, and its length direction will be greater than width direction to, be equipped with stabilizer blade 9 in the both sides of leaded light spare for the assembly of leaded light spare, stabilizer blade 9 is the connection of L type in the both sides of plate body length direction, makes to form between the installation position of leaded light spare and the leaded light spare body and arranges the space, and for light source or other optics spare to arrange, and be equipped with the connecting hole on stabilizer blade 9, in order to make things convenient for the assembly.
As a further embodiment of the saw-toothed structure, the saw-toothed structure comprises a linear saw-toothed group 5 for forming the linear light-homogenizing group 3 and an annular saw-toothed group 6 for forming the annular light-focusing group 4, and the annular saw-toothed group 6 is distributed in a substantially rectangular region equally divided in the length direction by the light-guiding member.
As shown in fig. 6, specifically, the linear sawtooth group 5 includes a plurality of linear sawtooth groups 5 sequentially arranged in the width direction, the linear sawteeth extend to two boundaries of the light guide member along the length direction, and a first light-gathering region 7 is formed on a center line of the incident portion 1 in the width direction, that is, the teeth of the linear sawtooth group 5 have a tendency of inclining toward the first light-gathering region 7, and light-gathering surfaces approaching to the horizontal are formed on two sides of the first light-gathering region 7, so that for convenience of observation, the dotted line in fig. 6 simplifies dense linear sawteeth, and refers to the first light-gathering region 7.
As shown in fig. 5, specifically, each of the annular sawtooth groups 6 includes a plurality of concentrically arranged annular sawteeth 6.1 and arc sawteeth 6.2 sequentially arranged in a radial direction, the arc sawteeth 6.2 are concentric with the annular sawteeth 6.1, the arc sawteeth 6.2 are distributed on the periphery side boundary of the rectangular light guide member, the outer diameter of the annular sawteeth 6.1 positioned on the radial outer side matches the width of the light guide member, wherein the centers of the annular sawteeth 6.1 and the arc sawteeth 6.2 are both positioned on the center line of the width direction of the light guide member, a second light focusing region 8 is formed at the center of each of the annular sawtooth groups 6, the annular sawteeth 6.1 and the arc sawteeth 6.2 have a tendency of inclining towards the second light focusing region 8, and the second light focusing region 8 and the first light focusing region 7 are oppositely arranged on the light guide member due to the superposition of light rays to obtain the expected illuminance.
For ease of viewing, the dotted line portions in fig. 5 simplify the dense annular serrations 6.1, which are referred to as second light-trapping regions 8.
Alternatively, two adjacent annular light-gathering groups 4 are symmetrically arranged about their abutting boundaries.
In this embodiment, the teeth of the annular sawtooth group 6 have different inclination angles, the teeth of the linear sawtooth group 5 have different inclination angles, and the inclination angles of the teeth of the annular sawtooth group 6 and the linear sawtooth group 5 are gradually increased toward the light-gathering center, so as to reduce the scattering of light at the light-gathering area and improve the light gathering effect at the light-gathering area.
By way of example, the tooth depth of the annular sawtooth group 6 and the linear sawtooth group 5 is 0.5mm, the tooth-to-tooth R angle is 0.02mm, through the improvement, the thickness of the light guide can reach 3mm, the length dimension of the light guide is 95mm, the width dimension of the light guide is 32mm, the central distance of the two annular light gathering groups 4 is 32.5mm, and when the total incident amount is 200.24Lm, the maximum illumination is 37.31Lm.
Specifically, the ratio of the total incident amount of the incident portion 1 to the maximum illuminance of the light emergent portion 2 satisfies: 0.18 to 0.205.
In other embodiments, the depth of the sawtooth teeth outside the first and second light condensation areas 8 is 0.5mm, and the depth of the sawtooth teeth in the first and second light condensation areas 8 decreases towards the center and approaches the cambered surface at the center.
In the above embodiment, the incident portion 1 is composed of a plurality of linear sawtooth groups 5, the linear sawteeth can be densely arranged in the width direction of the light guide member to perform the function of homogenizing light on the incident surface, so as to ensure that the light has uniform light uniformization and a guiding effect of converging towards the first light converging region 7 on the whole incident portion 1, the light is guided by the incident portion 1 and then enters the light emergent portion 2, and the light emergent portion 2 is composed of three annular light converging groups 4, so that the light can be converged and emitted towards the second light converging region 8 of each annular light converging group 4, which is beneficial to superposition after light is emitted, and further improves uniform irradiation of the light.
In fig. 9, the simulated receiving position is 10 meters away from the vehicle lamp, the LED luminous flux is 500lm, and fig. 10 is a schematic view of the light type based on the above.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (9)
1. A car light guide member, comprising:
the incident part (1) comprises linear light homogenizing groups (3) which are sequentially arranged along the width direction, and the linear light homogenizing groups (3) extend along the length direction and are fully distributed on two boundaries of the light guide piece;
light-emitting position (2), including a plurality of annular spotlight group (4) that arrange in proper order along length direction, just annular spotlight group (4) are covered with the both sides border of leaded light spare along width direction, just linear even light group (3) and annular even light group all are the sawtooth structure, the sawtooth prong of linear even light group (3) is located the coplanar, the sawtooth prong of annular spotlight group (4) is located the coplanar.
2. A vehicular lamp light guide member according to claim 1, characterized in that: the linear light-homogenizing group (3) forms a first curved surface in the width direction through a connecting line of tooth root endpoints of the sawtooth-shaped structure, and the annular light-concentrating group (4) forms a second curved surface in any direction through a connecting line of tooth root endpoints of the sawtooth-shaped structure.
3. A vehicular lamp light guide member according to claim 2, characterized in that: the surface types of the first curved surface and the second curved surface both meet the following requirements:
wherein Z is the distance rise from the fixed point of the optical surface when the height is h along the optical axis direction; c is paraxial curvature; k is a conic coefficient; r is the distance from a point on the optical surface to the optical axis; a is 1 、a 2 、a 3 、a 4 、a 5 、a 6 、a 7 、a 8 Are all high-order term coefficients.
4. A vehicular lamp light guide member according to claim 1, wherein: the sawtooth-shaped structure comprises a linear sawtooth group (5) for forming a linear light homogenizing group (3) and an annular sawtooth group (6) for forming an annular light condensing group (4), wherein a first light condensing area (7) is formed by the middle line of the linear sawtooth group (5) along the length direction, the teeth of the linear sawtooth group (5) have the tendency of inclining towards the first light condensing area (7), a second light condensing area (8) is formed at the center of each annular sawtooth group (6), and the second light condensing area (8) and the first light condensing area (7) are oppositely arranged on a light guide member.
5. A vehicular lamp light guide member according to claim 4, characterized in that: the teeth of the annular set of teeth (6) each have a tendency to tilt towards the second condensation zone (8).
6. A vehicular lamp light guide member according to claim 4, characterized in that: the teeth on the annular sawtooth group (6) have different inclination angles, and the teeth on the linear sawtooth group (5) have different inclination angles.
7. A vehicular lamp light guide member according to claim 4, characterized in that: the inclination angles of the teeth on the annular sawtooth group (6) and the linear sawtooth group (5) are gradually increased towards the light-gathering center.
8. A vehicular lamp light guide member according to claim 4, characterized in that: the tooth depth of the annular sawtooth group (6) and the linear sawtooth group (5) is 0.5mm, the R angle between teeth is 0.02mm, and the thickness of the light guide piece is 3mm.
9. A vehicular lamp light guide member according to claim 1, wherein: the ratio of the total incident amount of the incident part (1) to the maximum illumination of the light emergent part (2) satisfies the following conditions: 0.18 to 0.205.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221262392.5U CN217684743U (en) | 2022-05-24 | 2022-05-24 | Car light leaded light spare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221262392.5U CN217684743U (en) | 2022-05-24 | 2022-05-24 | Car light leaded light spare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217684743U true CN217684743U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221262392.5U Active CN217684743U (en) | 2022-05-24 | 2022-05-24 | Car light leaded light spare |
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| Country | Link |
|---|---|
| CN (1) | CN217684743U (en) |
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2022
- 2022-05-24 CN CN202221262392.5U patent/CN217684743U/en active Active
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