Light guide structure and atmosphere lamp
By designing a long strip light guide structure and using a reflective surface to reflect light to form two light spots, the problems of high cost and complex assembly of existing automotive ambient lights have been solved, achieving cost reduction and efficiency improvement.
Patent Information
- Application Number
- CN202520051615.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing automotive ambient lighting is costly and complex to emulate when it requires two light spots.
Design a light guide structure with a long strip shape, light incident surface and light guide cross section, and reflect light to light exit surface through first reflective surface and second reflective surface to form two independent light spots, reducing material and assembly steps.
It reduced raw material and manufacturing costs, simplified the assembly process, and improved assembly efficiency, as well as the uniformity and clarity of the light spot.
Smart Images
Figure CN223677633U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to interior trim lamp technical field especially is related to a light guide structure and atmosphere lamp. BACKGROUND
[0002] The light guide is a structure piece that guides the light emitted by the LED (Light Emitting Diode) to the front panel or the position needing light, which is made of good light guide material, such as polycarbonate material or acrylic material.
[0003] Due to the superior light guide performance of the light guide, it is very common in the fields of lamps and signals. The existing automobile atmosphere lamp has one light guide to irradiate one light spot. If the automobile atmosphere lamp needs to irradiate two light spots, two light guides are needed, which increases the cost. UTILITY MODEL CONTENT
[0004] The utility model discloses a light guide structure and atmosphere lamp, and aims at solving the technical problem of high cost of the existing atmosphere lamp irradiating two light spots.
[0005] In a first aspect, the application provides a light guide structure, which is in a strip shape, has a light-in surface and a light guide cross section, the light-in surface is located at one end of the light guide structure in the length direction, the light guide cross section is perpendicular to the length direction, and the light guide cross section includes a first reflective surface and a second reflective surface located at opposite sides in the width direction, and a light-out surface and a light guide surface located at opposite sides in the thickness direction.
[0006] Wherein, the light is incident through the light-in surface, and then reflected to the first reflective surface and the second reflective surface through the light guide surface respectively, the first reflective surface and the second reflective surface reflect the light to the light-out surface to be emitted, and converge in different areas.
[0007] In one of the embodiments, the first reflective surface is a full reflection surface.
[0008] In one of the embodiments, the second reflective surface is a full reflection surface.
[0009] In one of the embodiments, the first reflective surface is a concave surface.
[0010] In one of the embodiments, the second reflective surface is a concave surface.
[0011] In one of the embodiments, the light guide surface comprises a plurality of light guide convex surfaces distributed along the length direction, the light guide convex surfaces close to one side surface of the first reflective surface for reflecting light to the first reflective surface, and the light guide convex surfaces close to one side surface of the second reflective surface for reflecting light to the second reflective surface.
[0012] In one of the embodiments, in the light guide cross section, the light guide convex surface is a circular arc convex surface.
[0013] In one of the embodiments, the light guide convex surface is provided with a transition round corner on both sides in the length direction.
[0014] In one of the embodiments, the light guide structure is provided with a cylindrical groove on the side away from the light exit surface, the groove bottom of the cylindrical groove is provided with a plurality of light guide grooves, the light guide grooves and the cylindrical groove are coaxial in the length direction, and the groove bottom of the light guide groove forms the light guide convex surface.
[0015] In one of the embodiments, the light exit surface is a plane.
[0016] In one of the embodiments, the projection of the light exit surface in the thickness direction covers the projections of the light guide surface, the first reflective surface and the second reflective surface in the thickness direction.
[0017] In one of the embodiments, the light guide structure comprises an incident light section and a light exit section connected in sequence along the length direction, the cross section of the light exit section is the light guide cross section, the incident light section is provided with the incident light surface at one end away from the light exit section, and the remaining side surface of the incident light section is used for guiding light to the light guide surface.
[0018] In one of the embodiments, the outer diameter of the incident light section gradually increases in the direction close to the light exit section.
[0019] In the second aspect, the application provides an ambient light, which comprises a lamp bead and the light guide structure according to any one of the above embodiments, and the lamp bead is arranged at one end of the light guide structure with the incident light surface.
[0020] The beneficial effects of the light guide structure and the atmosphere lamp are that light enters the light guide structure from the light-in surface and is propagated along the length direction to the light guide surface, the light guide surface reflects the light to the first light-reflecting surface and the second light-reflecting surface respectively, the light reflected by the first light-reflecting surface is emitted through the light-out surface and converges into one light spot, the light reflected by the second light-reflecting surface is emitted through the light-out surface and converges into another light spot, that is, one light guide structure forms two light spots converging in different areas, the cost of raw materials, manufacturing and assembly is reduced, the technical problem of high cost of the existing atmosphere lamp emitting two light spots is solved, the number of the light guide structure is reduced, the steps and complexity in the assembly process are reduced, the assembly efficiency is improved, and the space utilization is optimized. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0022] Figure 1 The structure diagram of the light guide structure provided in the embodiment of the present application is shown in the figure.
[0023] Figure 2 The partial cross-sectional light path diagram of the light guide structure in the figure along the A-A line is shown in the figure. Figure 1
[0024] The cross-sectional light path diagram of the light guide structure in the figure along the B-B line is shown in the figure. Figure 3 Figure 1 The another perspective view of the light guide structure provided in the embodiment is shown in the figure.
[0025] Figure 4 The partial enlarged view of C in the figure is shown in the figure.
[0026] Figure 5 Figure 4 The effect diagram of the light guide structure provided in the embodiment is shown in the figure.
[0027] Figure 6 The effect diagram of the light guide structure provided in the embodiment is shown in the figure.
[0028] In the figure, each reference sign represents:
[0029] 10, light guide structure; 11, light-in section; 111, light-in surface; 112, first guide surface; 113, second guide surface; 114, fourth guide surface; 12, light-out section; 121, light guide cross section; 122, first light-reflecting surface; 123, second light-reflecting surface; 124, light-out surface; 125, light guide surface; 127, cylindrical groove; 128, light guide groove; 20, lamp bead. DETAILED DESCRIPTION
[0030] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout the whole description. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0031] Throughout the specification, reference to“one embodiment” or“the embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the phrases“in one embodiment” or“in some embodiments” appearing in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0032] In the description of the present application, it is to be understood that the terms“length”,“width”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer” and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0033] In addition, the terms“first”,“second” are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with“first”,“second” can explicitly or implicitly include one or more of the features.
[0034] In the present application, unless otherwise explicitly specified and limited, the terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0035] Embodiment one
[0036] In combination with Figures 1 to 3The embodiment of the present application provides a light guide structure 10. The light guide structure 10 is long strip-shaped, the light guide structure 10 has an incident light surface 111 and a light guide section 121, the incident light surface 111 is located at one end of the light guide structure 10 in the length direction X, the light guide section 121 is perpendicular to the length direction X, and the light guide section 121 comprises a first reflecting surface 122 and a second reflecting surface 123 located at opposite sides in the width direction Y and a light emitting surface 124 and a light guide surface 125 located at opposite sides in the thickness direction Z. Wherein, light is incident through the incident light surface 111, and then is reflected to the first reflecting surface 122 and the second reflecting surface 123 through the light guide surface 125, the first reflecting surface 122 and the second reflecting surface 123 reflect the light to the light emitting surface 124 to be emitted, and the light is converged in different areas.
[0037] In combination Figure 2 And Figure 3 , the light enters the light guide structure 10 from the incident light surface 111 and propagates along the length direction X to irradiate the light guide surface 125, the light guide surface 125 reflects the light to the first reflecting surface 122 and the second reflecting surface 123 respectively, the light reflected by the first reflecting surface 122 is emitted through the light emitting surface 124 and converged into a light spot, the light reflected by the second reflecting surface 123 is emitted through the light emitting surface 124 and converged into another light spot, that is, one light guide structure 10 forms two light spots converged in different areas (see Figure 6 ), the cost of raw materials, manufacturing and assembly is reduced, the number of light guide structures 10 is reduced, the steps and complexity in the assembly process are reduced, the assembly efficiency is improved, and the space use is optimized.
[0038] In the present application, the first reflecting surface 122, the second reflecting surface 123 and the light emitting surface 124 extend along the length direction X. The curvatures of the first reflecting surface 122 and the second reflecting surface 123 can be designed to adjust the positions of the convergence areas, for example, to increase or decrease the distance between the two light spots.
[0039] In one of the embodiments, in combination Figure 3 , the first reflecting surface 122 is a total reflection surface. When the light irradiates on the first reflecting surface 122, the light is totally reflected without transmission or scattering, the light is effectively guided to the light emitting surface 124, thereby improving the utilization rate of the light and the brightness of the light spot.
[0040] In one of the embodiments, in combination Figure 3 , the first reflecting surface 122 is a concave surface. The concave first reflecting surface 122 makes the reflected light more concentrated and uniform, thereby enhancing the brightness uniformity of the light spot, reducing the scattering and diffuse reflection of the light in the reflection process, and improving the definition of the light spot.
[0041] Specifically, by adjusting the curvature and position of the concave surface, the position, size and shape of the light spot are flexibly adjusted to meet different lighting requirements.
[0042] In one of the embodiments, in combination with Figure 3 , the second reflective surface 123 is a full reflective surface. When the light is incident on the second reflective surface 123, it will be fully reflected without transmission or scattering, and the light is effectively guided to the light emitting surface 124, thereby improving the utilization of light and the brightness of the light spot.
[0043] In one of the embodiments, in combination with Figure 3 , the second reflective surface 123 is a concave surface. The concave second reflective surface 123 makes the reflected light more concentrated and uniform, thereby enhancing the brightness uniformity of the light spot, reducing the scattering and diffuse reflection of light in the reflection process, and improving the clarity of the light spot.
[0044] Specifically, by adjusting the curvature and position of the concave surface, the position, size and shape of the light spot are flexibly adjusted to meet different lighting needs.
[0045] In one of the embodiments, in combination with Figure 2 and Figure 4 , the light guide surface 125 includes a plurality of light guide convex surfaces spaced along the length direction X, the side surface of the light guide convex surface close to the first reflective surface 122 is used to reflect light to the first reflective surface 122, and the side surface of the light guide convex surface close to the second reflective surface 123 is used to reflect light to the second reflective surface 123. The light guide convex surface is convexly arranged towards the light emitting surface 124, can receive the light incident from the light incident surface 111, and then reflect the light to the first reflective surface 122 and the second reflective surface 123, effectively controlling the light path. The light guide convex surface can change the transmission path of the light, so that the light propagates more orderly inside the light guide structure 10. The plurality of light guide convex surfaces are spaced along the length direction X, so that the light guide convex surfaces at different length positions reflect light to the first reflective surface 122 and the second reflective surface 123 at different length positions, so that the first reflective surface 122 and the second reflective surface 123 receive the light reflected by the light guide convex surfaces in the length direction X and respectively reflect and converge to form a long strip-shaped light spot, enhancing the dispersion and uniformity of the light spot.
[0046] Specifically, by reasonably designing the shape, size and distribution of the light guide convex surface, the reflection path of the light can be optimized, and the loss of the light in the light guide process can be reduced. By adjusting the parameters of the light guide convex surface, the light reflected to the first reflective surface 122 and the second reflective surface 123 can form a more uniform light spot on the light emitting surface 124.
[0047] In one of the embodiments, in combination with Figure 3In the light guide section 121, the light guide convex surface is a circular arc convex surface. Due to the smooth transition of the surface curvature of the circular arc convex surface, the reflected light is uniformly distributed on the cross section of the first reflecting surface 122 and the second reflecting surface 123, thereby reducing the uneven brightness of the light spot and making the entire light spot more uniform and soft.
[0048] In one embodiment, in combination with Figure 2 , the surface of the light guide convex surface close to the light emitting surface 124 directly reflects light to the light emitting surface 124. The top of the circular arc convex surface has a small size, and the reflected light close to the first reflecting surface 122 converges with the reflected light of the first reflecting surface 122, thereby enhancing the brightness of the light spot formed by the first reflecting surface 122. The reflected light close to the second reflecting surface 123 converges with the reflected light of the second reflecting surface 123, thereby enhancing the brightness of the light spot formed by the second reflecting surface 123. The light at the center of the top is vertically emitted to the light emitting surface 124. Since this part of light is very small and has low brightness, and is located in the middle of the light spot formed by the first reflecting surface 122 and the second reflecting surface 123, the brightness is relatively not obvious, as shown in Figure 6 .
[0049] In one embodiment, in combination with Figure 4 and Figure 5 , the light guide convex surface is provided with a transition round corner on both sides in the length direction X, which reduces the abrupt change of light at the edge of the light guide convex surface, so that the light reflected by the light guide convex surface is more uniform and soft in the length direction X, and the light reflected to the first reflecting surface 122 and the second reflecting surface 123 is uniformly distributed in the length direction X. Moreover, the transition round corner helps to reduce light loss and improve light transmission efficiency.
[0050] In one embodiment, in combination with Figure 4 and Figure 5 , the light guide structure 10 is provided with a cylindrical groove 127 on the side away from the light emitting surface 124. The groove bottom of the cylindrical groove 127 is provided with a plurality of light guide grooves 128. The light guide grooves 128 and the cylindrical groove 127 have the length direction X as the rotation axis. The groove bottom of the light guide groove 128 forms a light guide convex surface. That is, from the outside of the light guide structure 10, the groove bottom of the light guide groove 128 is concave. However, from the inside of the light guide structure 10, the concave groove bottom is convex towards the light emitting surface 124, which is a light guide convex surface. Based on this, the light guide groove 128 and the cylindrical groove 127 are processed by removing materials, thereby forming a plurality of guide convex surfaces distributed along the length direction X. This simplifies the manufacturing process, helps to reduce manufacturing cost, improves production efficiency, and makes the light guide structure 10 more easily integrated and installed.
[0051] In some embodiments, in combination with Figure 1 and Figure 4The light-exiting surface 124 is a plane. The plane light-exiting surface 124 simplifies the optical design, reduces the design and manufacturing difficulty, reduces the scattering and diffuse reflection of the light on the light-exiting surface 124, and improves the uniformity and definition of the light spot.
[0052] In some embodiments, in combination with Figure 1 and Figure 4 , the projection of the light-exiting surface 124 on the thickness direction Z covers the projection of the light guide surface 125, the first light reflecting surface 122 and the second light reflecting surface 123 on the thickness direction Z, that is, the light reflected by the light guide surface 125, the first light reflecting surface 122 and the second light reflecting surface 123 can be effectively received and output by the light-exiting surface 124, which ensures that the light inside the light guide structure 10 is used to the maximum extent, reduces the loss of light, and improves the overall brightness of the light guide structure 10. When the light is output from the light-exiting surface 124, since the light-exiting surface 124 covers the entire light path, the light can form a continuous and uniform light spot, reducing the phenomenon of uneven light and dark in the light spot, and improving the definition and uniformity of the light spot.
[0053] In some embodiments, in combination with Figure 1 , the light-entering surface 111 is a plane, which simplifies the light introduction and reduces the scattering and reflection of the light, so that more light can be effectively guided into the light guide structure 10.
[0054] In some embodiments, in the projection on the length direction X, the projection of the light-entering surface 111 is located within the projection of the light guide cross section 121, which reduces the deviation and scattering of the light at the entrance and ensures that the light can propagate along the predetermined path inside the light guide structure 10.
[0055] In some embodiments, in combination with Figure 1 , Figure 4 and Figure 5 , the light guide structure 10 includes the light-entering section 11 and the light-exiting section 12 connected in sequence along the length direction X, the cross section of the light-exiting section 12 is the light guide cross section 121, the end of the light-entering section 11 away from the light-exiting section 12 has the light-entering surface 111, and the remaining side surfaces of the light-entering section 11 are used to guide the light to the light guide surface 125, which ensures that the light can propagate along the predetermined path inside the light guide structure 10, and then the light guide surface 125 reflects the light to the first light reflecting surface 122 and the second light reflecting surface 123, achieving effective control of the light path. The area of the remaining side surfaces of the light-entering section 11 is large, which wraps the light-entering surface 111, so that all the incident light is basically guided to the light guide surface 125, improving the utilization rate of the light.
[0056] In one of the embodiments, in combination with Figure 1 , Figure 2 and Figure 5The outer diameter of the light-incident section 11 gradually increases in the direction close to the light-emitting section 12, which can more effectively capture and collect the light from the light-incident surface 111 and guide the light to the light-guiding surface 125, improving the light collection efficiency. The gradual increase of the outer diameter helps to reduce the loss of light during transmission. With the increase of the cross-sectional area, the number of reflections and the degree of scattering of the light inside the light guide structure 10 are reduced, thereby reducing the attenuation of the light.
[0057] In one embodiment, the light-incident section 11 includes first and fourth guide surfaces 112 and 114 on opposite sides in the thickness direction Z, and second and third guide surfaces 113 and 114 arranged opposite to each other in the width direction Y. The second guide surface 113 is close to the first reflective surface 122, and the second guide surface 113 reflects the light to the side of the light-guiding surface 125 close to the first reflective surface 122. The third guide surface is close to the second reflective surface 123, and the third guide surface reflects the light to the side of the light-guiding surface 125 close to the second reflective surface 123. The first and fourth guide surfaces 112 and 114 reflect the light to the side of the light-guiding surface 125 close to the light-emitting surface 124.
[0058] Embodiment two
[0059] In combination with Figure 1 and Figure 2 The present application provides an atmosphere lamp. The atmosphere lamp includes a lamp bead 20 and any one of the light guide structures 10 in embodiment one, and the lamp bead 20 is arranged at one end of the light guide structure 10 having the light-incident surface 111.
[0060] In combination with Figure 2 and Figure 3 The light emitted by the lamp bead 20 enters the light guide structure 10 from the light-incident surface 111 and propagates along the length direction X to irradiate the light-guiding surface 125, the light-guiding surface 125 reflects the light to the first and second reflective surfaces 122 and 123, respectively, the light reflected by the first reflective surface 122 is emitted through the light-emitting surface 124 and converges into a light spot, and the light reflected by the second reflective surface 123 is emitted through the light-emitting surface 124 and converges into another light spot, that is, one light guide structure 10 forms two light spots converging in different areas (see Figure 6 ), which reduces the cost of raw materials, manufacturing and assembly, and the number of light guide structures 10 is reduced, which reduces the steps and complexity in the assembly process, improves the assembly efficiency, and optimizes the space use.
[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A light guide structure, characterized by The light guide structure is in a strip shape, the light guide structure has a light-in surface and a light guide cross section, the light-in surface is located at one end of the light guide structure in a length direction, the light guide cross section is perpendicular to the length direction, and the light guide cross section comprises a first reflective surface and a second reflective surface located at opposite sides in a width direction, and a light-out surface and a light guide surface located at opposite sides in a thickness direction. Wherein, light is incident through the light-in surface, and then reflected to the first reflective surface and the second reflective surface through the light guide surface, the first reflective surface and the second reflective surface reflect light to the light-out surface to be emitted, and converge in different areas.
2. The light guide structure of claim 1, wherein: The first reflective surface is a total reflection surface, and / or the second reflective surface is a total reflection surface.
3. The light guide structure of claim 1, wherein: The first reflective surface is a concave surface, and / or the second reflective surface is a concave surface.
4. The light guide structure of claim 1, wherein: The light guide surface comprises a plurality of light guide convex surfaces distributed at intervals along the length direction, a side surface of the light guide convex surface close to the first reflective surface is used to reflect light to the first reflective surface, and a side surface of the light guide convex surface close to the second reflective surface is used to reflect light to the second reflective surface.
5. The light guide structure of claim 4, wherein: In the light guide cross section, the light guide convex surface is a circular arc convex surface; and / or, transition fillets are arranged on both sides of the light guide convex surface in the length direction.
6. The light guide structure of claim 4, wherein: A cylindrical concave groove is arranged on a side of the light guide structure away from the light-out surface, a groove bottom of the cylindrical concave groove is provided with a plurality of light guide grooves, the light guide grooves and the cylindrical concave groove have the length direction as an axis of rotation, and a groove bottom of the light guide groove forms the light guide convex surface.
7. The light guide structure according to any one of claims 1 to 6, characterized in that: The light-out surface is a plane, and / or a projection of the light-out surface in the thickness direction covers projections of the light guide surface, the first reflective surface and the second reflective surface in the thickness direction.
8. The light guide structure according to any one of claims 1 to 6, characterized in that: The light guide structure comprises a light-in section and a light-out section connected in sequence along the length direction, a cross section of the light-out section is the light guide cross section, an end of the light-in section away from the light-out section has the light-in surface, and the remaining side surface of the light-in section is used to guide light to the light guide surface.
9. The light guide structure of claim 8, wherein: An outer diameter of the light-in section gradually increases in a direction close to the light-out section.
10. An atmosphere lamp characterized by: The atmosphere lamp comprises a lamp bead and the light guide structure according to any one of claims 1 to 9, and the lamp bead is arranged at one end of the light guide structure having the light-in surface.