CN220321115U - Light guide structure for lighting edge dark area of light guide plate and car lamp using same - Google Patents
Light guide structure for lighting edge dark area of light guide plate and car lamp using same Download PDFInfo
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- CN220321115U CN220321115U CN202322243897.8U CN202322243897U CN220321115U CN 220321115 U CN220321115 U CN 220321115U CN 202322243897 U CN202322243897 U CN 202322243897U CN 220321115 U CN220321115 U CN 220321115U
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a light guide structure for lighting a dark area at the edge of a light guide plate and a car lamp using the light guide structure, which comprises the following components: a flat light guide body having a certain thickness, and a light incident surface, a top end reflecting surface and a side end reflecting surface formed on the light guide body; wherein the light incident surface and the top reflecting surface are respectively positioned at a pair of opposite side ends of the light guide body; the side end reflecting surface is positioned between the light incident surface and the top end reflecting surface and is obliquely distributed relative to the light incident surface; a joint reflecting surface which is raised relative to the side reflecting surface is formed between the side reflecting surface and the top reflecting surface; the light incident surface is provided with a first micro-light structure; the top reflecting surface is provided with a second micro-light structure; light enters the light guide body from the light incident surface, is reflected for the first time by the top reflecting surface, and is reflected for the second time by the connecting reflecting surface and the side reflecting surface to lighten the light guide body. The utility model also considers the production cost and the volume of the product to meet the use requirement of the corresponding scene on the premise of lighting the dark area.
Description
Technical Field
The utility model relates to the technical field of car lamps, in particular to a light guide structure for lighting a dark area at the edge of a light guide plate and a car lamp using the light guide structure.
Background
In the prior art, due to the requirement of the appearance design of the automobile, the shape of the automobile lamp is generally irregular, the effective luminous range is lower than the utilization ratio of the volume of the automobile lamp, and how to design a larger luminous diffusion range and realize a larger and more stable luminous area and luminous intensity by a smaller automobile lamp volume becomes a subject of long-term research in the industrial field. The shape of the light guide plate used correspondingly is also irregular for the irregular car lamp modeling, and the situation that the light is transmitted inside the light guide plate in an irregular shape can cause dark areas at the edge area of part of the light guide plate to influence the lighting uniformity.
Based on the above-mentioned circumstances, the publication No. CN218032953U discloses a multi-angle uniform light-emitting thick-wall light guide structure, aiming at the problem of dark space existing at the side end part of a thick-wall member, the light rays emitted by the secondary light source of the LED can be coupled into the thick-wall light guide after being collimated by the collimating structure, and spread to the optical surface in the thick-wall light guide to generate total internal reflection, and then exit through the light-emitting surface, so that the brightness of the right end of the thick-wall light guide is supplemented, and further the problem of dark space existing in lighting is solved, and the effect of multi-angle uniform light emission is realized. For the thick-wall light guide structure under the structure, the secondary light source and the corresponding collimating structure are additionally added, so that the production cost of the whole light guide structure is inevitably increased, and the assembly problem of the secondary light source and the collimating structure is considered, and the volume of the whole light guide structure is also increased. For this purpose, the light guide structure is not suitable for low-cost and space-limited applications, but for the automotive sector there must be a low-end or low-volume vehicle application.
In summary, for the light guide structure with the special shape, on the premise of solving the problem of lighting the dark area, the production cost and the volume of the product are also required to be considered to meet the use requirement of the corresponding scene.
Disclosure of Invention
The first objective of the present utility model is to provide a light guide structure for lighting the dark area at the edge of a light guide plate, so as to solve the technical problem that the production cost and the product volume are both required to meet the use requirement of the corresponding scene on the premise of lighting the dark area.
The second objective of the present utility model is to provide a vehicle lamp, which solves the technical problem that the production cost and the product volume are required to meet the use requirement of the corresponding scene on the premise of lighting the dark area.
The light guide structure of the utility model for lighting the dark area at the edge of the light guide plate is realized by the following steps:
a light guide structure for illuminating a dark region at an edge of a light guide plate, comprising: a flat light guide body having a certain thickness, and a light incident surface, a top end reflecting surface and a side end reflecting surface formed on the light guide body; wherein the method comprises the steps of
The light incident surface and the top reflecting surface are respectively positioned at a pair of opposite side ends of the light guide body; the side end reflecting surface is positioned between the light incident surface and the top end reflecting surface and is obliquely distributed relative to the light incident surface; a joint reflecting surface which is raised relative to the side reflecting surface is formed between the side reflecting surface and the top reflecting surface; and
the light incident surface is provided with a first micro-light structure; the top reflecting surface is provided with a second micro-light structure; light enters the light guide body from the light incident surface, is reflected for the first time by the top reflecting surface, and is reflected for the second time by the connecting reflecting surface and the side reflecting surface to lighten the light guide body.
In an alternative embodiment of the present utility model, the side end reflection surface forms an included angle β with respect to the light incident surface;
beta ranges from 10 deg. to 30 deg..
In an alternative embodiment of the present utility model, the first micro-optical structure includes a plurality of light refracting surfaces arranged in sequence and an engagement surface disposed between each adjacent two light refracting surfaces.
In an alternative embodiment of the present utility model, each of the light refracting surfaces has the same shape and size; the shape and the size of each joint surface are the same;
the size of the joint surface along the length direction of the light guide body is smaller than the size of the light refraction surface along the length direction of the light guide body; and
the light refracting surface is a plane or an arc surface.
In an alternative embodiment of the present utility model, an included angle θ is formed between a refractive light beam formed by the light beam entering the light guide body through the light incident surface and a normal line passing through the light incident point on the light incident surface;
θ is in the range of 38 ° to 83 °.
In an alternative embodiment of the present utility model, the second micro-optical structure includes a plurality of total reflection inclined planes sequentially arranged and a transition plane disposed between each adjacent two of the total reflection inclined planes.
In an alternative embodiment of the present utility model, each of the total reflection inclined planes has the same shape and size; the shape and the size of each transition surface are the same;
the dimension of the transition surface along the length direction of the light guide body is smaller than the dimension of the total reflection inclined surface along the length direction of the light guide body.
In an alternative embodiment of the present utility model, the total reflection inclined plane is a plane or an arc surface.
In an alternative embodiment of the present utility model, an included angle γ is formed between a refractive light ray formed by the light ray entering the light guide body through the light incident surface and a normal line of an incidence point corresponding to the refractive light ray on the total reflection inclined plane;
gamma is in the range of 38 DEG to 83 deg.
The car lamp is realized by the following steps:
a car lamp comprises a light guide structure for lighting a dark area at the edge of a light guide plate and a plurality of LED light sources which are arranged on one side of a light inlet surface of a light guide body and are distributed at intervals along the length direction of the light guide body.
By adopting the technical scheme, the utility model has the following beneficial effects: according to the light guide structure for lighting the edge dark area of the light guide plate and the car lamp using the light guide structure, the light enters the light guide body from the light incident surface through the cooperation of the first micro-light structure arranged on the light incident surface and the second micro-light structure arranged on the top reflecting surface, and is reflected for the first time through the top reflecting surface and then reflected for the second time through the connecting reflecting surface and the side reflecting surface, so that the light guide body is lighted. Besides the LED main light source used for emitting light, the structure can meet the lighting effect of the area where the joint reflecting surface formed on the light guide body is located without additionally configuring an auxiliary light source and a collimation structure, so that the production cost and the volume of a product are also considered to meet the use requirement of corresponding scenes on the premise of lighting a dark area.
Drawings
FIG. 1 is a schematic view of the overall structure of a light guide structure of the present utility model for illuminating a dark area at an edge of a light guide plate;
FIG. 2 is a schematic view of a partial structure of a light guide structure of the present utility model for illuminating a dark area at an edge of a light guide plate;
FIG. 3 is a schematic view of a first micro-optic structure and a second micro-optic structure of the light guide structure of the present utility model illuminating dark areas at the edges of the light guide plate;
FIG. 4 is a schematic view of the light path principle of the light guide structure of the present utility model for illuminating the dark areas at the edges of the light guide plate;
FIG. 5 is a schematic view of the total reflection slope and structure of a light guide structure of the present utility model illuminating a dark region at the edge of the light guide plate;
FIG. 6 is a schematic view of the structure of the total reflection slope and light refracting surface of the light guiding structure of the present utility model illuminating the dark areas of the edges of the light guiding plate;
FIG. 7 is a schematic view of light guiding structures of the present utility model illuminating dark areas at the edges of a light guiding plate under a first micro-optic structure and a second micro-optic structure;
FIG. 8 is a schematic view of light from a light guide structure of the present utility model illuminating dark areas at the edges of the light guide plate when the first micro-light structure and the second micro-light structure are not provided.
In the figure: the light guide body 1, the light incident surface 2, the first micro-light structure 21, the light refraction surface 211, the connection surface 212, the top reflecting surface 3, the second micro-light structure 31, the total reflection inclined surface 311, the transition surface 312, the side reflecting surface 4, the connection reflecting surface 5 and the LED light source 6.
Detailed Description
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example 1:
referring to fig. 1 to 8, the present embodiment provides a light guiding structure for lighting a dark area at an edge of a light guiding plate, comprising: a flat light guide body 1 having a certain thickness, and a light incident surface 2, a top end reflection surface 3 and a side end reflection surface 4 formed on the light guide body 1; the light guide body 1 may be made of a transparent material, such as glass or plastic, and the present embodiment is not limited in any way, as long as the light guide body can be made of a light-conducting material.
More specifically, first, the light incident surface 2 and the top reflecting surface 3 are respectively located at a pair of opposite side ends of the light guide body 1, so that the light entering the light guide body 1 from the light incident surface 2 is directly directed to the top reflecting surface 3. Secondly, the side end reflecting surface 4 is positioned between the light incident surface 2 and the top end reflecting surface 3 and is obliquely distributed relative to the light incident surface 2; a joint reflecting surface 5 protruding relative to the side reflecting surface 4 is also formed between the side reflecting surface 4 and the top reflecting surface 3. In an alternative embodiment, the engagement reflecting surface 5 may have a substantially circular arc-shaped configuration, on the basis of which the light-guiding body 1 of the present embodiment is irregularly shaped in terms of shape.
Furthermore, the light incident surface 2 is provided with a first micro-light structure 21; the top reflecting surface 3 is provided with a second micro-optical structure 31. Under this structure, light enters the light guide body 1 from the light incident surface 2, is reflected for the first time by the top end reflecting surface 3, and is reflected for the second time by the connecting reflecting surface 5 and the side end reflecting surface 4, so as to light the light guide body 1. That is, the light rays in this embodiment are incident on the side reflecting surface 4 and the joint reflecting surface 5 to be reflected for the second time.
In order to make the light entering the light guide body 1 shoot to the linking reflection surface 5 as much as possible after the light is reflected by the top reflection surface 3 for the first time, so as to ensure the lighting effect of the area where the linking reflection surface 5 and the side reflection surface 4 are located, especially the lighting of the corner formed by the protruding linking reflection surface 5 relative to the side reflection surface 4, the following design is made in this embodiment:
first, the side end reflecting surface 4 forms an included angle β with respect to the light incident surface 2; beta ranges from 10 deg. to 30 deg..
Next, the first micro-optical structure 21 includes a plurality of light refracting surfaces 211 arranged in sequence and an engagement surface 212 disposed between each adjacent two of the light refracting surfaces 211. The first micro-optical structure 21 of the present embodiment uses the refraction principle of light, so that the incident light enters the light guide body 1 and is deflected towards the area where the side end reflecting surface 4 and the linking reflecting surface 5 are located.
For example, in an alternative embodiment, the shape and size of each light refracting surface 211 in this embodiment are the same; the shape and size of each engagement surface 212 is the same; with this structure, the integral first micro-optical structure 21 is easy to be shaped. It should be noted that, the size of the engagement surface 212 along the length direction of the light guide body 1 is smaller than the size of the light refraction surface 211 along the length direction of the light guide body 1, so that the utilization rate of the light incident surface 2 can be improved, and the light rays can be sufficiently scattered under the action of the light refraction surfaces 211.
The light refracting surface 211 in this embodiment may be a planar or arcuate surface. For example, in the case where the light refracting surface 211 is a plane, the plurality of light refracting surfaces 211 may be understood as a distribution structure parallel to each other.
On the basis of the above-mentioned structure, it is also necessary to explain that the refractive light beam formed by the light beam entering the light guide body 1 through the light incident surface 2 forms an included angle θ with the normal k passing through the light incident point on the light incident surface 2; the range of theta is 38 deg. to 83 deg..
Furthermore, the second micro-optical structure 31 in this embodiment includes a plurality of total reflection inclined planes 311 sequentially arranged and a transition plane 312 disposed between every two adjacent total reflection inclined planes 311. The second micro-optical structure 31 of the present embodiment uses the reflection principle of light, so that the light is reflected by the total reflection inclined plane 311 and then directed to the direction of the area where the side end reflection surface 4 and the joint reflection surface 5 are located.
For example, in an alternative embodiment, the shape and size of each of the total reflection inclined surfaces 311 in the present embodiment are the same; the shape and size of each transition surface 312 are the same; with this structure, the integral second micro-optical structure 31 is easy to be formed. It should be noted that, the dimension of the transition surface 312 along the length direction of the light guide body 1 is smaller than the dimension of the total reflection inclined surface 311 along the length direction of the light guide body 1. With such a structure, on one hand, the transition surface 312 does not form a shielding that the light rays formed by the reflection of the total reflection inclined surface 311 are emitted to the side end reflection surface 4 and the connection reflection surface 5; on the other hand, the reflectivity of the light entering the light guide body 1 in the region where the second micro light structure 31 is located can be improved, so that the light is fully reflected and scattered under the action of the plurality of total reflection inclined planes 311.
The total reflection inclined surface 311 may be a plane surface or an arc surface. For example, in the case where the total reflection inclined surface 311 adopts a flat surface, the plurality of total reflection inclined surfaces 311 may be understood as a distribution structure parallel to each other.
On the basis of the above-mentioned structure, it is also necessary to say that the refractive light beam formed by the light beam entering the light guide body 1 through the light-entering surface 2 forms an included angle γ with the normal line k of the incidence point of the refractive light beam on the total reflection inclined surface 311; gamma is in the range of 38 DEG to 83 deg.
In summary, referring to the light guiding structure shown in fig. 7, the number of light rays entering the linking reflection surface 5 under the cooperation of the first micro-optical structure 21 and the second micro-optical structure 31 is significantly greater than the number of light rays entering the linking reflection surface 5 under the light guiding structure without the first micro-optical structure 21 and the second micro-optical structure 31 shown in fig. 8, for the light guiding structure, the more the number of light rays entering each region, the better the lighting effect of the region is, so the lighting effect of the region can be improved by increasing the number of light rays entering the region. For the light guide structure for lighting the dark area at the edge of the light guide plate in this embodiment, the light enters the light guide body 1 from the light incident surface 2 through the cooperation of the first micro-light structure 21 arranged on the light incident surface 2 and the second micro-light structure 31 arranged on the top reflecting surface 3, and is reflected for the first time by the top reflecting surface 3 and then reflected for the second time by the linking reflecting surface 5 and the side reflecting surface 4, so as to light the light guide body 1.
Example 2:
on the basis of the light guide structure for lighting the light guide plate edge dark area of embodiment 1, this embodiment provides a vehicle lamp including the light guide structure for lighting the light guide plate edge dark area of embodiment 1, and a plurality of LED light sources 6 provided on the light entrance surface 2 side of the light guide body 1 at intervals along the length direction of the light guide body 1.
It should be noted that, the LED light source 6 in this embodiment is arranged on the PCB board, and the PCB board is arranged according to the space given by the lamp modeling, and the structure of parallel arrangement with the light incident surface 2 is not necessarily required, but the installation condition of the PCB board can be adjusted according to the actual application scene requirement, so that the lamp of this embodiment can solve the problem of insufficient space brought by the lamp modeling while increasing the light guiding efficiency.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present utility model, and are more fully described herein with reference to the accompanying drawings, in which the principles of the present utility model are shown and described, and in which the general principles of the utility model are defined by the appended claims.
In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present utility model, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Claims (10)
1. A light guide structure for illuminating a dark area at an edge of a light guide plate, comprising: a flat light guide body having a certain thickness, and a light incident surface, a top end reflecting surface and a side end reflecting surface formed on the light guide body; wherein the method comprises the steps of
The light incident surface and the top reflecting surface are respectively positioned at a pair of opposite side ends of the light guide body; the side end reflecting surface is positioned between the light incident surface and the top end reflecting surface and is obliquely distributed relative to the light incident surface; a joint reflecting surface which is raised relative to the side reflecting surface is formed between the side reflecting surface and the top reflecting surface; and
the light incident surface is provided with a first micro-light structure; the top reflecting surface is provided with a second micro-light structure; light enters the light guide body from the light incident surface, is reflected for the first time by the top reflecting surface, and is reflected for the second time by the connecting reflecting surface and the side reflecting surface to lighten the light guide body.
2. The light guide structure for lighting the edge dark area of the light guide plate according to claim 1, wherein the side reflecting surface forms an included angle β with respect to the light incident surface;
beta ranges from 10 deg. to 30 deg..
3. The light guide structure for lighting an edge dark area of a light guide plate according to claim 1 or 2, wherein the first micro-light structure includes a plurality of light refracting surfaces arranged in order and an engagement surface provided between each adjacent two of the light refracting surfaces.
4. A light guide structure for illuminating a dark region at an edge of a light guide plate as recited in claim 3, wherein each of said light refracting surfaces is identical in shape and size; the shape and the size of each joint surface are the same;
the size of the joint surface along the length direction of the light guide body is smaller than the size of the light refraction surface along the length direction of the light guide body; and
the light refracting surface is a plane or an arc surface.
5. A light guide structure for lighting a dark area at an edge of a light guide plate according to claim 3, wherein a refractive light beam formed by light entering the light guide body through the light incident surface forms an angle θ with a normal line passing through the light incident point on the light incident surface;
θ is in the range of 38 ° to 83 °.
6. A light guide structure for illuminating a dark region at an edge of a light guide plate as recited in claim 3, wherein the second micro-optic structure comprises a plurality of total reflection inclined planes arranged in sequence and a transition surface provided between each adjacent two of the total reflection inclined planes.
7. The light guide structure for illuminating a dark space at an edge of a light guide plate of claim 6, wherein each of the total reflection inclined surfaces has the same shape and size; the shape and the size of each transition surface are the same;
the dimension of the transition surface along the length direction of the light guide body is smaller than the dimension of the total reflection inclined surface along the length direction of the light guide body.
8. The light guide structure for illuminating a dark space at an edge of a light guide plate as recited in claim 7, wherein the total reflection slope is a planar or arcuate surface.
9. The light guide structure for lighting the dark area at the edge of the light guide plate according to claim 6, wherein the refractive light rays formed by the light rays entering the light guide body through the light entering surface form an included angle gamma with the normal line of the incidence point of the refractive light rays on the total reflection inclined plane;
gamma is in the range of 38 DEG to 83 deg.
10. A vehicle lamp comprising a light guide structure for lighting the dark area at the edge of the light guide plate as claimed in any one of claims 1 to 9, and a plurality of LED light sources provided on the light entrance surface side of the light guide body and spaced apart in the longitudinal direction of the light guide body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243897.8U CN220321115U (en) | 2023-08-21 | 2023-08-21 | Light guide structure for lighting edge dark area of light guide plate and car lamp using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322243897.8U CN220321115U (en) | 2023-08-21 | 2023-08-21 | Light guide structure for lighting edge dark area of light guide plate and car lamp using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220321115U true CN220321115U (en) | 2024-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322243897.8U Active CN220321115U (en) | 2023-08-21 | 2023-08-21 | Light guide structure for lighting edge dark area of light guide plate and car lamp using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220321115U (en) |
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2023
- 2023-08-21 CN CN202322243897.8U patent/CN220321115U/en active Active
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