Illumination module and vehicle lamp
By designing the rotating reflective part and reflective surface in the illumination module, the problem that light cannot be effectively reflected at the connection of the reflective part in the prior art is solved, and a more uniform light-emitting light type is achieved.
Patent Information
- Application Number
- CN202421255840.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The existing LED lighting module cannot effectively reflect light at the connection of the reflective parts, resulting in the light output type being not uniform enough, forming a dark area.
An illumination module is designed, wherein the reflecting parts are connected in sequence along the arrangement direction of the light source, and the reflecting parts located on both sides rotate toward the reflecting part in the center, and a reflecting surface is provided on one side of the radiator to reflect light.
By rotating the reflecting portions on both sides, the reflected light is deflected toward the center, blurring the dark area of the sub-light type, and improving the uniformity of the light-emitting light type.
Smart Images
Figure CN222503588U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automobile parts, and in particular to a lighting module and a vehicle lamp. Background Art
[0002] With the rapid development of the automobile industry and the continuous improvement of LED light efficiency, the application of LED in automobiles has become more and more common, and LED automobile lamps have begun to become more popular. Compared with traditional light sources, LED (light-emitting diode) has the advantages of long life, reliability and durability, small size, low energy consumption, fast response, and flexible design. LED has been widely used in interior lighting devices and exterior signal devices.
[0003] There are two types of LED lighting modules in the prior art, namely, a high beam module and a low beam module, which are used to emit high beam and low beam respectively. The high beam module and the low beam module both include a circuit board and a reflective element. A plurality of LED light sources are arranged on the circuit board. A plurality of reflective parts are provided on the reflective element. The reflective parts are used to reflect the light emitted by the LED. In the prior art, the plurality of reflective parts are connected in sequence. The connection between adjacent reflective parts cannot reflect the light. As a result, when the sub-light patterns formed by adjacent reflective parts of the lighting module are superimposed, a dark area is formed at the connection, which makes the light pattern of the lighting module uneven. Utility Model Content
[0004] The purpose of the present application is to provide a lighting module and a vehicle lamp, which can improve the uniformity of the light pattern of the lighting module.
[0005] On the one hand, an embodiment of the present application provides a lighting module, including a circuit board, a reflective element and a heat sink, the circuit board and the reflective element are respectively fixed to the heat sink, a plurality of light sources are arranged on the circuit board, the reflective element includes a plurality of reflective parts, the plurality of reflective parts extend toward the light emitting direction of the lighting module, the plurality of reflective parts are connected in sequence along the arrangement direction of the light sources, and the reflective parts located on both sides are rotated toward the reflective part in the center, and a reflective surface is provided on the side of the heat sink close to the reflective element for reflecting light.
[0006] As an implementable manner, the lighting module further includes a bracket and an output lens, the output lens is arranged on the light reflection path of the reflective part and the reflective surface, and the bracket is used to fix the output lens and the heat sink.
[0007] As an implementable manner, the rotation angles of the reflection parts on both sides gradually increase in a direction away from the central reflection part.
[0008] As an implementable manner, the rotation angle of the reflection parts on both sides is less than 14°.
[0009] As an implementable manner, the reflecting parts are at least one of a parabolic reflector, a quasi-parabolic reflector, an ellipsoidal reflector or a quasi-ellipsoidal reflector.
[0010] As an implementable manner, the reflecting surface area of the reflecting parts located at both sides is larger than the reflecting surface area of the reflecting part located at the center, and the curvature of the reflecting parts located at both sides is larger than the curvature of the reflecting part located at the center.
[0011] As an implementable manner, the angle between the reflection surface and the optical axis of the output lens is between 0° and 10°.
[0012] As an implementable manner, a cutoff line structure is formed at a boundary of the reflective surface close to the exit lens, and the cutoff line structure protrudes a draft angle in a direction away from the reflective surface, and the draft angle is between 0.5° and 1.5°.
[0013] As an implementable manner, there is a 75R measuring point on the reflective surface, and the reflectivity at the 75R measuring point is greater than or less than the reflectivity of other areas on the reflective surface.
[0014] As an implementable manner, the side of the reflective surface away from the exit lens extends toward the circuit board, and there is a gap between the reflective surface and the circuit board, and the size of the gap is greater than 0.1 cm.
[0015] On the other hand, an embodiment of the present application provides a vehicle lamp, comprising the above-mentioned lighting module, wherein the lighting module is a low beam module or a high beam module.
[0016] The beneficial effects of the embodiments of the present application include:
[0017] The lighting module provided by the present application includes a circuit board, a reflective element and a heat sink. The circuit board and the reflective element are respectively fixed to the heat sink. A plurality of light sources are arranged on the circuit board. The reflective element includes a plurality of reflective parts. The plurality of reflective parts extend toward the light emitting direction of the lighting module. The plurality of reflective parts are sequentially connected along the arrangement direction of the light sources, and the reflective parts located on both sides rotate toward the reflective part in the center. A reflective surface is arranged on one side of the heat sink close to the reflective element for reflecting light. The reflective parts located on both sides rotate toward the reflective part in the center so that the light reflected by the reflective parts located on both sides is deflected toward the center. In this way, the dark area formed by the sub-light patterns formed by the light reflected by the plurality of reflective parts is blurred, so that the final light emitting pattern is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is one of the exploded views of a lighting module provided in an embodiment of the present application;
[0020] Figure 2 One of the structural schematic diagrams of a reflective element provided in an embodiment of the present application;
[0021] Figure 3 A second structural schematic diagram of a reflective element provided in an embodiment of the present application;
[0022] Figure 4 The second exploded view of a lighting module provided in an embodiment of the present application;
[0023] Figure 5 A third structural schematic diagram of a reflective element provided in an embodiment of the present application;
[0024] Figure 6 A fourth structural schematic diagram of a reflective element provided in an embodiment of the present application;
[0025] Figure 7 This is one of the structural schematic diagrams of a lighting module provided in an embodiment of the present application;
[0026] Figure 8 A second structural schematic diagram of a lighting module provided in an embodiment of the present application;
[0027] Fig. 9 One of the structural schematic diagrams of a radiator provided in an embodiment of the present application;
[0028] Fig.10 for Fig. 9 The enlarged view of point A in the middle;
[0029] Fig.11 A second structural schematic diagram of a radiator provided in an embodiment of the present application;
[0030] Fig.12 A third structural schematic diagram of a radiator provided in an embodiment of the present application;
[0031] Fig.13 A fourth structural schematic diagram of a radiator provided in an embodiment of the present application;
[0032] Fig.14A fifth structural schematic diagram of a radiator provided in an embodiment of the present application;
[0033] Fig.15 One of the structural schematic diagrams of a high beam module provided in an embodiment of the present application;
[0034] Fig.16 A sixth structural diagram of a radiator provided in an embodiment of the present application;
[0035] Fig.17 A cross-sectional view of a baffle provided in an embodiment of the present application.
[0036] Icons: 100-lighting module; 110-circuit board; 111-light source; 120-reflection element; 121-reflection part; 130-heat sink; 131-reflection surface; 132-cut-off line structure; 133-draft angle; 134-75R measuring point; 135-vertical stripes; 140-bracket; 150-exit lens; 160-baffle. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0040] In the description of the present application, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0041] The present application embodiment provides a lighting module 100, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a circuit board 110, a reflective element 120 and a heat sink 130. The circuit board 110 and the reflective element 120 are respectively fixed to the heat sink 130. A plurality of light sources 111 are arranged on the circuit board 110. The reflective element 120 includes a plurality of reflective portions 121. The plurality of reflective portions 121 extend toward the light emitting direction of the lighting module 100. The plurality of reflective portions 121 are sequentially connected along the arrangement direction of the light sources 111, and the reflective portions 121 located on both sides rotate toward the reflective portion 121 in the center. A reflective surface 131 is provided on the side of the heat sink 130 close to the reflective element 120 for reflecting light.
[0042] The lighting module 100 provided in the embodiment of the present application is applied to a vehicle lamp and is used to emit light as a lighting element or a signal element during the driving process of the vehicle. Specifically, the lighting module 100 can be a low beam module or a high beam module. For example, when the lighting module 100 is a low beam module, a plurality of light sources 111 are arranged on the circuit board 110, and the reflective element 120 includes a reflective portion 121 arranged corresponding to the light source 111. The plurality of reflective portions 121 are sequentially connected along the arrangement direction of the light source 111. The light emitted by the light source 111 is respectively emitted after being reflected by the corresponding reflective portion 121 or after being reflected by the corresponding reflective portion 121 and then reflected by the reflective surface 131. The reflective portions 121 on both sides are rotated toward the reflective portion 121 in the center, so that the light reflected by the reflective portions 121 on both sides is deflected toward the center, so that the dark area of the sub-light pattern formed by the light reflected by the plurality of reflective portions 121 is blurred, so that the final low beam light pattern is more uniform.
[0043] The specific number and structure of the reflective portion 121 are not limited in the embodiment of the present application, and those skilled in the art can set them according to actual conditions. For example, Figure 2As shown, seven reflection portions 121 are provided, wherein the fourth reflection portion 121 is used as the central reflection portion 121 , and the reflection portions 121 on both sides are rotated toward the fourth reflection portion 121 .
[0044] It should be noted that the reflection parts 121 at both sides rotate toward the reflection part 121 at the center, which means that the reflection parts 121 at both sides rotate toward the reflection part 121 at the center with their own centers as the rotation centers.
[0045] In addition, in practical applications, a bracket 140 and an output lens 150 are usually provided. Figure 4 As shown, the output lens 150 is arranged on the light reflection path of the reflection part 121 and the reflection surface 131, the bracket 140 is used to fix the output lens 150 and the heat sink 130, the reflection element 120 and the circuit board 110 are respectively connected to the heat sink 130, and one end of the heat sink 130 extends into the bracket 140 from one end of the bracket 140 and is fixedly connected to the bracket 140, and the output lens 150 is fixedly connected and arranged at the other end of the bracket 140.
[0046] From the above, it can be seen that the embodiment of the present application rotates the reflecting parts 121 on both sides toward the reflecting part 121 in the center so that the light reflected by the reflecting parts 121 on both sides is deflected toward the center. In this way, the dark areas of the sub-light patterns formed by the light reflected by multiple reflecting parts 121 are blurred, thereby making the final light output pattern more uniform.
[0047] Optional, such as Figure 2 and Figure 3 As shown, the rotation angles of the reflection parts 121 on both sides gradually increase in the direction away from the center reflection part 121.
[0048] Along the direction from the center to the two sides, the rotation angles of the reflection parts 121 on both sides gradually increase. In this way, the direction of the light deflection toward the center gradually increases from the reflection part 121 in the center to the reflection parts 121 on both sides. In this way, when the sub-light patterns formed by the light reflected by multiple reflection parts 121 are spliced with each other, the boundaries of the sub-light patterns overlap more, preventing the generation of dark areas, thereby further improving the uniformity of the light output pattern.
[0049] In one possible implementation of the present application, Figure 2 and Figure 3 As shown, the rotation angle of the reflection parts 121 on both sides is less than 14°.
[0050] When the rotation angle of the reflective parts 121 on both sides is too large, the sub-light patterns corresponding to the reflective parts 121 on both sides will shrink, thereby making the illumination area of the sub-light pattern too small, affecting the normal illumination area. According to experimental verification, when the rotation angle of the reflective parts 121 on both sides is less than 14°, the uniformity of the light output pattern of the lighting module 100 can be improved without affecting the illumination area of the sub-light pattern.
[0051] It should be noted that the maximum value of the rotation angle of the reflective portion 121 is set relative to the structure of the lighting module 100 of the embodiment of the present application. When the structure of the lighting module 100 changes, the maximum value of the rotation angle of the reflective portions 121 on both sides should change. For example, when the number of reflective portions 121 changes, or the structure of the reflective portion 121 changes, the maximum value of the rotation angle of the reflective portions 121 on both sides should change accordingly. Therefore, those skilled in the art can set the rotation angle of the reflective portions 121 on both sides according to the structure of the lighting module 100 and the uniformity requirements.
[0052] Optional, such as Figure 5 and Figure 6 As shown, the reflecting portion 121 is at least one of a parabolic reflector, a quasi-parabolic reflector, an ellipsoidal reflector or a quasi-ellipsoidal reflector.
[0053] Specifically, when the reflector 121 is an ellipsoidal reflector or a quasi-ellipsoidal reflector, each light source 111 is arranged near the first focus of the corresponding reflector 121, so that the light emitted by the light source 111 is reflected by the corresponding reflector 121 and converges at the second focus of the reflector 121, and the second focus is all located on the focal plane of the output lens 150; when the reflector 121 is a parabolic reflector or a quasi-parabolic reflector, each light source 111 is arranged near the focus of the corresponding reflector 121, and the light is converted into parallel light or quasi-parallel light after being reflected by the reflector, and the focal plane of the output lens 150 is arranged in the optical path of the reflected light. Therefore, the light emitted by each light source 111 can be uniformly emitted by the output lens 150.
[0054] Optionally, the reflecting surface area of the reflecting parts 121 on both sides is larger than the reflecting surface area of the reflecting part 121 at the center, and the curvature of the reflecting parts 121 on both sides is larger than the curvature of the reflecting part 121 at the center. In the embodiment of the present application, the reflecting surface area of the reflecting parts 121 on both sides is set to be larger than the reflecting surface area of the reflecting part 121 at the center, so that more light can be emitted from the output lens 150, and the curvature of the reflecting parts 121 on both sides is larger than the curvature of the reflecting part 121 at the center, so that the light reflected by the reflecting parts 121 on both sides is projected to the widened area of the light output light pattern, thereby expanding the illumination range.
[0055] It should be noted that the number of the reflecting parts 121 with increased reflecting surface area is not limited in the present embodiment of the application, and can be as follows: Figure 5 and Figure 6 As shown, only the outermost reflection parts 121 on both sides are set to have a slightly larger area, so that the other reflection parts 121 have smaller areas, so that the entire lighting module 100 is more compact and does not waste space.
[0056] In one possible implementation of the present application, Figure 7 and Figure 8 As shown, a reflective surface 131 is provided on one side of the heat sink 130 close to the reflective element 120, and the angle between the reflective surface 131 and the optical axis of the output lens 150 (as shown in FIG. Figure 8 θ) is between 0° and 10°. For example, when the lighting module 100 is a high beam module, when the angle between the reflective surface 131 and the optical axis of the exit lens 150 is 0°, the high beam pattern is at a higher position on the light distribution screen; and when the angle is 10°, the high beam pattern is at a lower position on the light distribution screen, which can meet the requirements of connecting or superimposing with different low beam patterns.
[0057] The boundary of the reflecting surface 131 close to the light source is 0 mm to 15 mm away from the light source (e.g. Figure 7 As shown), the distance between the reflective surface 131 and the light source 111 can be made closer, thereby reflecting more light, utilizing more light and transmitting it to the output lens 150 for projection, thereby improving the light efficiency of the lighting module 100.
[0058] In one possible implementation of the present application, Fig. 9 , Fig.10 and Fig.11 As shown, the boundary of the reflective surface 131 close to the output lens 150 is formed as a cut-off line structure 132 . The cut-off line structure 132 protrudes a draft angle 133 in a direction away from the reflective surface 131 . The draft angle 133 is between 0.5° and 1.5°.
[0059] The draft angle 133 is set between 0.5° and 1.5°, which increases the angle of the draft angle 133 relative to 0° in the prior art. The draft angle 133 is set on the cut-off line structure 132. When the angle of the draft angle 133 is changed, the inclined surface on the draft angle 133 reflects the light, which can better control the illumination of the cut-off line and make more light gather at the cut-off line.
[0060] The specific angle of the draft angle 133 is not limited in the embodiment of the present application, and those skilled in the art can select a suitable angle within the above range to better control the edge contact of the light output pattern.
[0061] Optional, such as Fig.12As shown, the reflective surface 131 has a measuring point 134 75R, and the reflectivity of the measuring point 134 75R is greater than or less than the reflectivity of other areas on the reflective surface 131 .
[0062] In order to meet the headlamp lighting performance requirements stipulated by the regulations: 1. Sufficient lighting brightness in the main illumination area of the lane; 2. The illumination area is wide enough but does not dazzle oncoming drivers. Therefore, the test point that represents good visibility of this lane is 75R test point 134, which represents the lighting brightness at a distance of 75m in front of the right side of the vehicle.
[0063] In the present application, the reflectivity at the 75R measuring point 134 is set to be different from the reflectivity at other positions on the reflective surface 131 , so that the light output pattern of the lighting module 100 can meet regulatory requirements.
[0064] Specifically, the reflectivity of the measuring point 134 at 75R is not limited in the embodiment of the present application. Usually, the reflectivity of the reflecting surface 131 is about 85%. The reflectivity of the measuring point 134 at 75R only needs to be different from the reflectivity of other parts of the reflecting surface 131.
[0065] In one possible implementation of the present application, Fig.13 and Fig.14 As shown, the side of the reflective surface 131 away from the output lens 150 extends toward the circuit board 110 , and there is a gap between the reflective surface 131 and the circuit board 110 , and the size of the gap is greater than 0.1 cm.
[0066] When the reflective portion 121 has poor convergence properties on the light emitted by the light source 111, one side of the reflective surface 131 is extended toward the circuit board 110 so that the reflective surface 131 is closer to the circuit board 110, thereby enabling the reflective surface 131 to reflect more light, utilize more light and transmit it to the output lens 150 for projection, thereby improving the lighting efficiency of the lighting module 100.
[0067] In practical applications, the reflective surface 131 usually achieves a higher reflectivity by aluminum plating. In order to avoid mutual influence between the reflective surface 131 and the circuit board 110, a gap is set between the reflective surface 131 and the circuit board 110. The size of the gap is greater than 0.1 cm to ensure that the reflective surface 131 and the circuit board 110 both work normally.
[0068] It is understandable that when the reflective portion 121 has a better convergence property on the light emitted by the light source 111, the reflective surface 131 may not be extended. The specific size of the reflective surface 131 can be set by those skilled in the art according to specific circumstances.
[0069] In one possible implementation of the embodiment of the present application, Fig.15 and Fig.17As shown, a baffle 160 is arranged on the side of the reflective element 120 away from the radiator 130, and the baffle 160 covers the reflective surface 131 of the radiator 130. A plurality of slits are arranged on the baffle 160, and the slits are hooked, which can prevent sunlight from focusing and block the stray light reflected by the reflective surface 131.
[0070] In addition, in order to reduce the influence of stray light on the light output pattern, Fig.16 As shown, vertical stripes 135 are provided on both sides of the heat sink 130 , so that when stray light is irradiated to the heat sink 130 , the vertical stripes 135 diffusely reflect the stray light to keep it away from the reflection surface 131 , thereby preventing the stray light from being reflected by the reflection surface 131 and projected by the output lens 150 to affect the light output pattern.
[0071] The embodiment of the present application also discloses a vehicle lamp, comprising the lighting module 100, wherein the lighting module 100 is a low beam module or a high beam module. The vehicle lamp comprises the same structure and beneficial effects as the lighting module 100 in the aforementioned embodiment. The structure and beneficial effects of the lighting module 100 have been described in detail in the aforementioned embodiment, and will not be repeated here.
[0072] 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 lighting module, characterized in that: It includes a circuit board, a reflective element and a heat sink, the circuit board and the reflective element are respectively fixed to the heat sink, a plurality of light sources are arranged on the circuit board, the reflective element includes a plurality of reflective parts, a plurality of the reflective parts extend toward the light emitting direction of the lighting module, a plurality of reflective parts are sequentially connected along the arrangement direction of the light sources, and the reflective parts located on both sides are rotated toward the reflective part in the center, and a reflective surface is arranged on the side of the heat sink close to the reflective element for reflecting light.
2. The lighting module according to claim 1, characterized in that: It also includes a bracket and an output lens, wherein the output lens is arranged on the light reflection path of the reflection part and the reflection surface, and the bracket is used to fix the output lens and the heat sink.
3. The lighting module according to claim 1, characterized in that: The rotation angles of the reflection parts at both sides gradually increase in a direction away from the center of the reflection part.
4. The lighting module according to claim 1 or 3, characterized in that: The rotation angle of the reflecting parts on both sides is less than 14°.
5. The lighting module according to claim 1, characterized in that: The reflecting part is at least one of a parabolic reflector, a quasi-parabolic reflector, an ellipsoidal reflector or a quasi-ellipsoidal reflector.
6. The lighting module according to claim 1, characterized in that: The reflecting surface area of the reflecting parts located at both sides is greater than the reflecting surface area of the reflecting part located at the center, and the curvature of the reflecting parts located at both sides is greater than the curvature of the reflecting part located at the center.
7. The lighting module according to claim 2, characterized in that: The angle between the reflecting surface and the optical axis of the exit lens is between 0° and 10°.
8. The lighting module according to claim 2, characterized in that: A boundary of the reflective surface close to the exit lens forms a cut-off line structure, and the cut-off line structure protrudes a draft angle in a direction away from the reflective surface, and the draft angle is between 0.5° and 1.5°.
9. The lighting module according to claim 1, characterized in that: The reflective surface has a 75R measuring point, and the reflectivity at the 75R measuring point is greater than or less than the reflectivity of other areas on the reflective surface.
10. The lighting module according to claim 2, characterized in that: The reflective surface extends toward the circuit board from a side away from the exit lens, and there is a gap between the reflective surface and the circuit board, and the size of the gap is greater than 0.1 cm.
11. A vehicle lamp, characterized in that: The lighting module comprises the lighting module according to any one of claims 1 to 10, wherein the lighting module is a low beam module or a high beam module.