Vehicle signal lamp and vehicle

Abstract

The invention provides a vehicle signal lamp and a vehicle, and the vehicle signal lamp comprises a reflector which is of a sheet-shaped structure which is twisted and extended as a whole; the plurality of light sources are arranged on the light incident side of the reflecting mirror; the light distribution mirror is arranged on the light emitting side of the reflecting mirror; and light rays emitted by the light source are diffused to the light distribution mirror under the action of the reflecting mirror. The light utilization rate can be improved, and the light distribution uniformity is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lamps, and in particular to a vehicle signal lamp and a vehicle. Background Art

[0002] Vehicle signal lights include direct-type structures, reflective structures and light-guiding structures. The reflective-type vehicle signal lights include a light source, a reflector and a light distribution mirror. The light emitted by the light source changes direction through the reflector, shines on the light distribution mirror, and passes through the light distribution mirror to form an outgoing light. In order to meet the light distribution needs, the reflector usually adopts a step structure design. One surface of the step structure is an effective reflective surface, and the other surface is an invalid reflective surface. The invalid reflective surface is prone to blockage or stray light, etc., which will reduce the utilization rate of light and affect the uniformity of light distribution. Summary of the invention

[0003] The present application provides a vehicle signal light and a vehicle to increase the utilization rate of light and improve the uniformity of light distribution.

[0004] A first aspect of the present application provides a vehicle signal lamp, comprising: A reflector, wherein the reflector as a whole is in a twisted and extended sheet-like structure; A plurality of light sources are arranged on the light incident side of the reflector; A light distribution mirror, arranged on the light-emitting side of the reflector; The light emitted by the light source is diffused to the light distribution mirror under the action of the reflector.

[0005] Optionally, the sheet structure includes a plurality of arcuate surfaces arranged in sequence, and adjacent arcuate surfaces are connected via a torsion surface.

[0006] Optionally, the surface of the reflector is a continuous smooth curved surface.

[0007] Optionally, the curvature range of any point of the reflector is 20 mm to 100 mm.

[0008] Optionally, the surface of the reflector is provided with an optical pattern of 1.4 μm to 2.5 μm.

[0009] Optionally, the surface of the light distribution mirror is provided with an optical pattern of 1.4 μm to 1.8 μm.

[0010] Optionally, the vehicle signal light further comprises a first mounting plate, the first mounting plate is integrally formed with an edge of the reflector close to the light incident side, and each of the light sources is arranged along the first mounting plate.

[0011] Optionally, the first mounting plate includes at least two planar segments, and the planar segments are arranged in sequence along the extension direction of the reflector; The vehicle signal light further comprises a hard circuit board, the hard circuit board is arranged in one-to-one correspondence with the plane segments, and the light source is connected to the hard circuit board.

[0012] Optionally, the vehicle signal light further comprises a second mounting plate, and the second mounting plate is integrally formed on an edge of the reflector away from the light incident side.

[0013] A second aspect of the present application provides a vehicle, which includes any one of the vehicle signal lights provided in the present application.

[0014] The technical solution provided by this application can achieve the following beneficial effects: The vehicle signal light provided by the present application includes a reflector, a plurality of light sources and a photometric mirror. The reflector as a whole is in a torsionally extended sheet structure; the light source is arranged on the light incident side of the reflector; the photometric mirror is arranged on the light exit side of the reflector; the light emitted by the light source is evenly dispersed to the photometric mirror under the action of the reflector. On the one hand, the shape of the reflector can be adapted to the complex light source arrangement, the space limitation of the light source arrangement can be reduced, the diversity and reliability of the design can be maximized, the design difficulty can be reduced, and the reflector can better meet the requirements of complex shape design such as long strips. On the other hand, the step structure of the reflector is eliminated by the torsion structure, forming a smooth and uniform transition, so that the reflection direction of the light can be better controlled, the light shielding and stray light of the reflector itself or the middle plate can be reduced, and the effective reflection area can be increased, thereby improving the utilization rate of the light and improving the uniformity of the light distribution.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of a vehicle signal light provided by an embodiment of the present application; Figure 2 A flow chart of a reflector design method provided in an embodiment of the present application; Figure 3 A front view of a partial structure of a vehicle signal light provided by an embodiment of the present application; Figure 4 for Figure 3 A top view of the structure of a portion of the vehicle signal light shown; Figure 5 for Figure 3 A three-dimensional view of a portion of the structure of a vehicle signal lamp at one angle; Figure 6 for Figure 3 A three-dimensional view of the vehicle signal light structure from another angle.

[0017] Reference numerals: 1- Reflector; 11-light incident side; 12-light emitting side; 2- Light source; 3-Mirrors; 4- first mounting plate; 4a- plane segment; 4b-cambered segment; 41-Gap; 5- second mounting plate; 6-Hard circuit board; 7-lamp housing; 8-Medium plate; 81-Light exit; 9- Lampshade.

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0022] like Figure 1-Figure 6As shown, an embodiment of the present application provides a vehicle signal light, which includes a reflector 1, a plurality of light sources 2 and a photometric mirror 3. The vehicle signal light is installed and fixed by components such as a lamp housing 7, a middle plate 8 and a lampshade 9. The middle plate 8 is sandwiched between the lamp housing 7 and the lampshade 9, and the middle plate 8 is formed with a light outlet 81; the reflector 1 and the light source 2 are located on the side of the middle plate 8 close to the lamp housing 7, and the photometric mirror 3 is located on the side of the middle plate 8 close to the lampshade 9. Under the action of the reflector 1, the light emitted by the light source 2 passes through the light outlet 81 to reach the surface of the photometric mirror 3; the outgoing light passing through the photometric mirror 3 passes through the transparent lampshade 9 to form a signal light. The light source 2 is a light-emitting device such as a light-emitting diode (LED), and the color and quantity of the light source 2 can be reasonably set as needed.

[0023] Furthermore, the light source 2 is arranged on the light incident side 11 of the reflector 1, and the light distribution mirror 3 is arranged on the light exit side 12 of the reflector 1. The light emitted by the light source 2 is evenly dispersed to the surface of the light distribution mirror 3 under the action of the reflector 1, and passes through the light distribution mirror 3 to form an outgoing light. In other words, the reflector 1 plays a role of reflection and dispersion, but not a role of light distribution; the light distribution function is realized by the light distribution mirror 3, and an outgoing light that meets the regulatory requirements is formed under the action of the light distribution mirror 3; the reflection function and the light distribution function are realized by two independent components, which can reduce the design difficulty and complexity of the vehicle signal light.

[0024] In addition, the reflector 1 plays a role of reflecting and diverging. The reflected light formed by the reflector 1 is not a parallel light, so that the light can be irradiated on the surface of the light distribution mirror 3 in any direction. Therefore, the light outside the range of the light outlet 81 can also enter the light outlet 81 obliquely, thereby expanding the effective range of the light outlet 81, reducing the light blocking by the middle plate 8 and other components, and improving the utilization rate of the light. In addition, the divergent light can also improve the uniformity of the brightness of the light outlet 81, avoiding the light from being concentrated in the center of the light outlet 81, forming a visual effect of bright center and dark edges.

[0025] Furthermore, the reflector 1 is a twisted and extended sheet structure as a whole. On the one hand, the shape of the reflector 1 can be adapted to the complex arrangement of the light source 2, reducing the space limitation of the arrangement of the light source 2, maximizing the diversity and reliability of the design, reducing the design difficulty, and enabling the reflector 1 to better meet the requirements of complex shape design such as long strips. On the other hand, the step structure of the reflector 1 is eliminated by the twisted structure, forming a smooth and uniform transition, so that the reflection direction of the light can be better controlled, the light shielding and stray light of the reflector 1 itself or the middle plate 8 can be reduced, and the effective reflection area can be increased, thereby improving the utilization rate of the light and improving the uniformity of the light distribution.

[0026] Specifically, under normal circumstances, the normal direction of the light source 2 needs to be designed to be the front-to-back direction of the vehicle, and the space limitation for the arrangement of the light source 2 is relatively large. In the embodiment of the present application, the reflector 1 is twisted, and since the twisting direction and the extension direction can have a variety of changes, the normal direction of the light source 2 can be set to any direction, thereby reducing the space limitation for the arrangement of the light source 2 and improving the uniformity of the light distribution. For example, by changing the normal angle of the light source 2, the embodiment of the present application can distribute the light source 2 in multiple rows along the front-to-back direction of the vehicle, and by adjusting the distribution of each row of light sources 2 along the width direction of the vehicle, the uniformity of the light distribution is achieved.

[0027] The sheet structure may include alternating tiny arcuate surfaces and twisted surfaces, and the arcuate surfaces are arranged and extended according to the predetermined shape of the reflector 1, thereby forming the approximate shape and outline of the reflector 1. The shape of the arcuate surface is coupled and set according to the light source 2 and the photometric mirror 3, so that the light irradiated on the surface of the arcuate surface can be evenly dispersed to the surface of the photometric mirror 3 after reflection, thereby achieving uniform distribution of light. The twisted surface forms a fitting connection between adjacent arcuate surfaces, cancels the step structure of the reflector 1, and forms a smooth and uniform transition between the twisted surface and the arcuate surface, thereby avoiding structural mutations between adjacent arcuate surfaces, better controlling the reflection direction of light, reducing the shielding and stray light of the reflector 1 itself or the middle plate 8, and increasing the effective reflection area, thereby improving the utilization rate of light and the uniformity of light distribution.

[0028] refer to Figure 2 The reflector provided in the embodiment of the present application can be designed according to the following steps: Step S1, setting a plurality of discrete arc-shaped surfaces according to predetermined reflection requirements.

[0029] Specifically, the arrangement of the arcuate surfaces is determined according to the predetermined reflector shape, so that the reflector meets the design requirements of the long strip shape. The shape of each individual arcuate surface is determined by coupling according to the light entrance position (i.e., the light source position), the emission angle of the light emitted by the light source, and the light exit position (i.e., the photometric lens position) (refer to Figure 1 ), so that the light irradiated on the curved surface can be evenly dispersed to the surface of the light distribution lens after reflection, thereby achieving uniform distribution of light.

[0030] The normal direction of the light source can be set to any appropriate direction to reduce the space limitation of light source arrangement. Multiple rows of light sources are arranged along the front and rear direction of the vehicle, so that the light sources are arranged in a long strip. By adjusting the distribution of each row of light sources along the width direction of the vehicle, uniform illumination distribution can be achieved.

[0031] Step S2, adjacent arcuate surfaces are connected by fitting through a torsion surface to form a torsionally extended sheet structure, which is a reflector. On the one hand, the torsion surface enables the shape of the reflector to adapt to the complex light source arrangement, reduces the space limitation of the light source arrangement, maximizes the diversity and reliability of the design, reduces the design difficulty, and enables the reflector to better meet the requirements of complex shape design such as long strips. On the other hand, since the torsion surface forms a smooth and uniform transition with the adjacent arcuate surface, the reflection direction of the light can be better controlled, the light shielding and stray light of the reflector itself or the middle plate can be reduced, and the effective reflection area can be increased, thereby improving the utilization rate of light and the uniformity of light distribution.

[0032] Furthermore, the surface of the reflector 1 is a continuous smooth curved surface, that is, the sheet structure is smoothed to form a smooth transition structure between the curved surface and the torsion surface. On the one hand, the smooth curved surface can simplify the manufacturing process and reduce production costs; on the other hand, the smooth curved surface minimizes the curvature change between adjacent curved surfaces, thereby further reducing light blocking and stray light, maximizing the effective emission surface, thereby effectively improving the light utilization rate and making the light distribution more uniform. After testing, the reflector 1 provided in the embodiment of the present application can increase the upper limit of the light utilization rate from 80% to 90%.

[0033] Continue to refer Figure 2 Based on the above step S2, the sheet structure is processed according to the following steps: Step S3, smoothing the sheet structure according to a predetermined curvature to form a continuous smooth curved surface. Through the smoothing process, the curvature change between adjacent curved surfaces can be minimized, thereby further reducing light blocking and stray light, maximizing the effective emission surface, thereby effectively improving the light utilization rate and making the light distribution more uniform.

[0034] Further, the curvature range of any point of the reflector 1 is 20mm~100mm. For example, the curvature of any point of the reflector 1 can be 20mm, 30mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm or 100mm, etc. This curvature range is the maximum optional range of the curvature of the reflector 1. The specific curvature is determined according to the specific shape of the reflector 1 and the size of the space. After testing, within this curvature range, the light within the irradiation angle of 120° of the light source 2 can be evenly dispersed to the surface of the light distribution mirror 3 to achieve uniformity of light brightness in the luminous area. When the curvature of the reflector 1 is less than 20mm, the light is too concentrated, affecting the uniformity of the light distribution; when the curvature of the reflector 1 is greater than 100mm, the light is too divergent, resulting in a darker brightness in the luminous area.

[0035] Furthermore, the surface of the reflector 1 is provided with an optical pattern, and the optical pattern can be selected in any existing size range. The optical pattern plays an auxiliary reflection role on the surface of the reflector 1, and can overcome the tiny defects on the surface of the reflector 1, thereby further improving the uniformity of light distribution.

[0036] In one embodiment, the surface of the reflector 1 is provided with an optical pattern of 1.4 μm to 2.5 μm. For example, the size of the optical pattern on the surface of the reflector 1 can be selected from 1.4 μm, 1.6 μm, 1.8 μm, 2.0 μm, 2.2 μm, 2.4 or 2.5 μm, etc. This size range is the maximum optional range of the optical pattern of the reflector 1. The specific size of the optical pattern is determined according to factors such as the specific shape and curvature of the reflector 1. After testing, the uniformity of light distribution can be effectively improved by selecting an optical pattern in this size range. When the optical pattern on the surface of the reflector 1 is less than 1.4 μm, the process requirements are high, resulting in excessively high production costs for the reflector 1; when the optical pattern on the surface of the reflector 1 is greater than 2.5 μm, the reflected light will form irregular light and dark stripes, affecting the uniformity of light distribution.

[0037] Furthermore, the surface of the light distribution mirror 3 is provided with an optical pattern, and the optical pattern can be selected from any existing size range. The optical pattern plays an auxiliary light distribution role on the surface of the light distribution mirror 3, realizes the secondary coupling conversion of the light irradiation angle, so that the emitted light can better meet the regulatory requirements. The light distribution mirror 3 can be provided with an optical pattern on the inner surface (the side surface of the light distribution mirror 3 facing the reflector 1), or the light distribution mirror 3 can be provided with an optical pattern on the outer surface (the side surface of the light distribution mirror 3 facing away from the reflector 1).

[0038] In one embodiment, the surface of the light distribution mirror 3 is provided with an optical pattern of 1.4 μm to 1.8 μm. For example, the size of the optical pattern on the surface of the light distribution mirror 3 can be selected from 1.4 μm, 1.5 μm, 1.6 μm, 1.7 μm or 1.8 μm, etc. This size range is the maximum optional range of the optical pattern of the reflector 1. The specific size of the optical pattern is determined according to factors such as the specific shape and curvature of the reflector 1. After testing, the optical pattern of this size range is selected, and the outgoing light formed by passing through the light distribution mirror 3 can meet the regulatory requirements. When the size of the optical pattern on the surface of the light distribution mirror 3 is less than 1.4 μm, the process requirements are high, resulting in excessively high production costs of the light distribution mirror 3; when the size of the optical pattern on the surface of the light distribution mirror 3 is greater than 1.8 μm, the uniformity of the light distribution is poor, and the outgoing light will form irregular light and dark stripes. In addition, the size of the optical pattern on the surface of the light distribution mirror 3 is smaller than the size of the optical pattern on the surface of the reflector 1, which can ensure the uniformity of the outgoing light.

[0039] The size of the above optical pattern (including the optical pattern on the surface of the reflector 1 and the optical pattern on the surface of the light distribution mirror 3) refers to the side length of the unit pattern. Specifically, the unit pattern is generally a square, and the unit pattern is repeatedly arranged on a predetermined surface (for example, the surface of the reflector 1 or the surface of the light distribution mirror 3) to form an optical pattern; the side length of the unit pattern is the size of the optical pattern.

[0040] Furthermore, the vehicle signal lamp further comprises a first mounting plate 4, which is integrally formed at the edge of the reflector 1 close to the light incident side 11, that is, the first mounting plate 4 is formed by extending the edge of the reflector 1, and each light source 2 is arranged along the first mounting plate 4. On the one hand, by extending the first mounting plate 4 at the edge of the reflector 1, the reflector 1 is installed and fixed, so that the reflector 1 can maintain its own structural integrity, thereby achieving the expected reflection effect; on the other hand, the first mounting plate 4 plays a reflective role at the light incident side 11 to prevent light from leaking at the light incident side 11, thereby improving the utilization rate of light.

[0041] Furthermore, the first mounting plate 4 includes at least two plane sections, each of which is arranged in sequence along the extension direction of the reflector 1, and adjacent plane sections can be smoothly connected by arc sections. This can not only make the first mounting plate 4 adapt to the complex spatial shape of the reflector 1, but also simplify the structure of the first mounting plate 4 itself and reduce production costs.

[0042] Furthermore, the vehicle signal lamp further comprises a hard circuit board 6. The hard circuit board 6 is arranged in one-to-one correspondence with the plane segment, and the hard circuit board 6 is arranged substantially parallel to the plane segment, so as to improve the relative position accuracy between the hard circuit board 6 and the first mounting plate 4. The light source 2 is connected to the hard circuit board 6, and the hard circuit board 6 has a flat surface that is not easily deformed. By changing the design angle of the hard circuit board 6, it is possible to avoid the circuit board from blocking the light, thereby improving the utilization rate of the light. Moreover, the hard circuit board 6 can be directly used as a mounting bracket for the light source 2, thereby reducing the number of components and making the assembly of the vehicle signal lamp more concise and efficient.

[0043] Specifically, in the existing reflective vehicle signal lights, the light source 2 is usually connected to a flexible circuit board. When the power supply of the flexible circuit board is arranged at a height difference of less than 23° in the front-to-rear direction of the vehicle, the light is not blocked. At the same time, the spacing of the light source arrangement in the vehicle width direction must be ≥8mm, and the step height must be ≤3.4mm. Therefore, the light source arrangement space is greatly limited, and the design is difficult. In addition, since the flexible circuit board itself does not have a supporting function, a specially designed mounting bracket is required, resulting in a complex process and high cost.

[0044] The hard circuit board 6 is stacked on the side of the first mounting plate 4 away from the reflector 1, and a notch 41 is provided at the position of the first mounting plate 4 corresponding to the light source 2, so that the light emitted by the light source 2 can pass through the first mounting plate 4 and irradiate the surface of the reflector 1. The notch 41 can be set at the edge of the first mounting plate 4 close to the reflector 1, or the notch 41 can be set at the edge of the first mounting plate 4 away from the reflector 1. The edge of the notch 41 is a fold line structure, and the light source 2 is set corresponding to the concave position of the fold line structure to limit the divergence angle of the light emitted by the light source 2, so that more light can irradiate the surface of the reflector 1.

[0045] Furthermore, the vehicle signal lamp further comprises a second mounting plate 5, which is integrally formed at the edge of the reflector 1 away from the light incident side 11, that is, the second mounting plate 5 is formed by extending the edge of the reflector 1. On the one hand, by extending the second mounting plate 5 at the edge of the reflector 1, the reflector 1 is installed and fixed, so that the reflector 1 can maintain its own structural integrity, thereby achieving the expected emission effect; on the other hand, the second mounting plate 5 plays an auxiliary reflective role outside the coverage angle of the reflector 1, which can prevent light from leaking at the edge of the reflector 1, thereby improving the utilization rate of light.

[0046] Specifically, the second mounting plate 5 and the first mounting plate 4 are arranged at two opposite edges of the reflector 1, and the second mounting plate 5 and the first mounting plate 4 can be arranged parallel to each other or at an angle to each other. A light channel is formed between the second mounting plate 5 and the first mounting plate 4, and the second mounting plate 5 and the first mounting plate 4 form a light exit at the edge away from the reflector 1, and the light distribution mirror 3 is arranged at the exit.

[0047] In addition, an embodiment of the present application further provides a vehicle, which includes any one of the vehicle signal lights provided in the embodiments of the present application.

[0048] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle signal light, characterized in that: include: A reflector, wherein the reflector as a whole is in a twisted and extended sheet-like structure; A plurality of light sources are arranged on the light incident side of the reflector; A light distribution mirror, arranged on the light-emitting side of the reflector; The light emitted by the light source is diffused to the light distribution mirror under the action of the reflector.

2. The vehicle signal light according to claim 1, characterized in that: The sheet structure includes a plurality of arcuate surfaces arranged in sequence, and adjacent arcuate surfaces are connected via a twisted surface.

3. The vehicle signal lamp according to claim 1, characterized in that: The surface of the reflector is a continuous smooth curved surface.

4. The vehicle signal lamp according to claim 3, characterized in that: The curvature range of any point of the reflector is 20 mm to 100 mm.

5. The vehicle signal lamp according to claim 1, characterized in that: The surface of the reflector is provided with an optical pattern of 1.4 μm to 2.5 μm.

6. The vehicle signal lamp according to claim 1, characterized in that: The surface of the light distribution mirror is provided with an optical pattern of 1.4 μm to 1.8 μm.

7. The vehicle signal light according to any one of claims 1 to 6, characterized in that: The vehicle signal lamp further includes a first mounting plate, the first mounting plate is integrally formed on an edge of the reflector close to the light incident side, and each of the light sources is arranged along the first mounting plate.

8. The vehicle signal lamp according to claim 7, characterized in that: The first mounting plate comprises at least two planar segments, and the planar segments are arranged in sequence along the extension direction of the reflector; The vehicle signal light further comprises a hard circuit board, the hard circuit board is arranged in one-to-one correspondence with the plane segments, and the light source is connected to the hard circuit board.

9. The vehicle signal light according to any one of claims 1 to 6, characterized in that: The vehicle signal light further includes a second mounting plate, which is integrally formed on an edge of the reflector away from the light incident side.

10. A vehicle, characterized in that: A vehicle signal lamp comprising the vehicle signal lamp according to any one of claims 1 to 9.

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