Novel narrow-opening LED lighting module for vehicle

Abstract

A novel narrow-opening LED lighting module for a vehicle comprises a narrow-opening lens, an upper shell, a light source and a lower shell, a lens lower clamping platform is arranged at the front end of the lower shell, a light source mounting platform is arranged at the rear end of the lower shell, and the light source is fixed to the light source mounting platform; the front end of the upper shell is provided with a lens upper clamping platform, the rear end of the upper shell is provided with a reflection area, and the reflection area is provided with a cut-off line forming structure; the upper shell is fixed on the lower shell, the reflecting region is positioned above the light source, and meanwhile, the narrow-opening lens is fixed between the upper shell and the lower shell; the front end of the narrow-opening lens is provided with a light-emitting surface, and the rear end of the narrow-opening lens is provided with a light-incident surface; a three-area light distribution structure is arranged on the light incident face, the three-area light distribution structure is used for providing complementing light for an area III in the passing light pattern, and the three-area light distribution structure is three protrusions arranged side by side. According to the utility model, the problems in the prior art can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile lamps, especially to a novel narrow-opening LED lighting module for vehicles. BACKGROUND

[0002] In recent years, LED light sources have become the main force of vehicle lamp lighting systems due to their excellent optical performance, and have been favored by more and more automobile manufacturers and consumers. However, with the pursuit of automobile styling by consumers, automobile lamps are no longer simply lighting functions, but more reflect the aesthetic feeling of automobiles at first sight.

[0003] With the diversification of the appearance and styling of automobile lamps, automobile lamps require a more elongated narrow-opening light-emitting surface light in addition to the lighting function. However, the existing high beam or low beam LED modules generally have a large module lens size in mass production design, which is usually greater than 30 mm in the opening longitudinal dimension (Y direction size), and cannot meet the requirements. Therefore, narrow-opening optical systems and LED modules have appeared, such as Chinese patent CN 220249736 U, which discloses an LED module including a narrow-opening optical system, the narrow-opening optical system including a narrow-opening lens, a cutoff line baffle, a beam shaping element, and a light source, the beam shaping element being disposed in front of the light source, the narrow-opening lens being disposed in front of the beam shaping element, and the cutoff line baffle being disposed between the narrow-opening lens and the beam shaping element. The beam shaping element includes a first beam shaping element, and the light source includes a first LED light source. The first LED light source emits light rays that are adjusted to be emitted through the first beam shaping element and are blocked by the cutoff line baffle to form a first light beam with a bright-dark cutoff line. The first light beam forms a low-beam light pattern through the narrow-opening lens. In this structure, the focal point of the narrow-opening lens needs to be set on the front edge of the cutoff line baffle, the beam shaping element needs to be set behind the cutoff line baffle, and the first LED light source needs to be set on the focal point of the first beam shaping element. This directly leads to a longer Z-direction length of the LED module, and thus a longer Z-direction length of the vehicle lamp, which cannot meet the structural design of automobile lamps with less Z-direction space.

[0004] In addition, the low-beam light pattern provided by the LED module of this structure is relatively fixed and does not have the design flexibility to adjust the light pattern distribution according to customer optical requirements. One light pattern distribution needs to correspond to one LED module, which has high production cost and long production cycle. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of the prior art and provides a novel narrow-opening LED lighting module for vehicles, which effectively solves the problems of the prior art.

[0006] The utility model is implemented by the following technical solutions:

[0007] A novel narrow-aperture LED lighting module for automobiles is characterized by comprising a narrow-aperture lens, an upper housing, a light source, and a lower housing. The lower housing has a lens clamping platform at its front end and a light source mounting platform at its rear end, on which the light source is fixed. The upper housing has a lens clamping platform at its front end and a reflective area at its rear end, with a cutoff line forming structure on the reflective area. The upper housing is fixed to the lower housing, such that the reflective area is positioned above the light source, and the lens clamping platform is positioned above the lens. The lower clamping platform cooperates to fix the narrow aperture lens between the upper and lower shells; the front end of the narrow aperture lens is provided with a light-emitting surface and the rear end is provided with a light-incident surface, and the light-emitting surface is cylindrical; the light emitted by the light source is reflected by the reflection area and enters the narrow aperture lens through the light-incident surface, and then exits from the light-emitting surface to form a near beam pattern with a bright and dark cutoff line shape; a three-zone light distribution structure is provided on the light-incident surface, which is used to provide supplementary light to zone III of the near beam pattern, and the three-zone light distribution structure consists of three protrusions arranged side by side.

[0008] Furthermore, according to the LED lighting module of this utility model, the length of the protrusion is 1-1.5mm, the width is 0.8-1.2mm, and the distance between two adjacent protrusions is 0.5-1mm.

[0009] Furthermore, according to the LED lighting module of this utility model, the surfaces of the protrusions on both sides facing the light source are first supplementary light-incident surfaces. The horizontal cross-sectional line of the first supplementary light-incident surface is a convex curve with the outer edge higher than the inner edge. The first supplementary light-incident surface is used to adjust the angle and diffuse the incoming light. The surface of the protrusion in the middle facing the light source is a second supplementary light-incident surface. The horizontal cross-sectional line of the second supplementary light-incident surface is a convex curve. The second supplementary light-incident surface is used to diffuse the incoming light.

[0010] Furthermore, according to the LED lighting module of this utility model, a limiting structure is respectively provided between the narrow aperture lens and the lens upper clamping platform and the lens lower clamping platform. The limiting structure includes a limiting groove and a limiting post, and the limiting post is inserted into the limiting groove to achieve a limiting connection.

[0011] Furthermore, according to the LED lighting module of this utility model, the light-incident surface is composed of two working surface groups connected together, namely a first working surface group and a second working surface group; the reflective area is composed of two reflector bowl groups with side-emitting structures connected together, and the reflector bowl groups are provided with cut-off line forming structures, namely a first reflector bowl group and a second reflector bowl group; the light source includes two LED light source groups, namely a first LED light source group and a second LED light source group; the light emitted by the first LED light source group is reflected by the first reflector bowl group and enters the narrow aperture lens through the first working surface group, and then exits from the light-emitting surface to form a first beam; the light emitted by the second LED light source group is reflected by the second reflector bowl group and enters the narrow aperture lens through the second working surface group, and then exits from the light-emitting surface to form a second beam; the first beam and the second beam combine to form the near beam pattern.

[0012] Furthermore, according to the LED lighting module of this utility model, the LED lighting module is used for left-hand drive vehicle lights, and the three-zone light distribution structure is arranged in the first working surface group.

[0013] Furthermore, according to the LED lighting module of this utility model, the first working surface group includes three freeform surfaces arranged side by side, namely a first freeform surface, a second freeform surface, and a third freeform surface. The second freeform surface is located between the first freeform surface and the third freeform surface and is connected to the second working surface group through the first freeform surface. The three-zone light distribution structure is disposed on the first freeform surface and is located at the center of the first freeform surface. The first reflector group includes three main reflectors arranged side by side, and the main reflectors are provided with a cutoff line forming structure. The first LED light source group includes three main LED light-emitting particles arranged side by side. The light provided by the innermost main LED light-emitting particle is reflected by the innermost main reflector and then by the first freeform surface. The light from the first LED light source group enters the narrow aperture lens and is then emitted from the light-emitting surface to form the first portion of the first light beam. The light from the middle main LED light-emitting particle is reflected by the middle main reflector and enters the narrow aperture lens through the second freeform surface, then is emitted from the light-emitting surface to form the second portion of the first light beam. The light from the outermost main LED light-emitting particle is reflected by the outermost main reflector and enters the narrow aperture lens through the third freeform surface, then is emitted from the light-emitting surface to form the third portion of the first light beam. The structure of the second LED light source group is the same as that of the first LED light source group, and the structure of the second reflector group is the same as that of the first reflector group. The second working surface group has no three-zone light distribution structure, but is otherwise the same as the first working surface group.

[0014] Furthermore, according to the LED lighting module of this utility model, the lower shell is provided with a plurality of first partitions between the light source and the narrow aperture lens, the first partitions being used to block light from two adjacent main LED light-emitting particles.

[0015] Furthermore, according to the LED lighting module of this utility model, both the first reflector group and the second reflector group have auxiliary reflector bowls between the outermost main reflector bowl and the middle main reflector bowl. Both the first LED light source group and the second LED light source group have flexible light source areas between the outermost main LED light-emitting particles and the middle main LED light-emitting particles. The flexible light source areas may or may not have auxiliary LED light-emitting particles according to customer optical requirements. The light provided by the auxiliary LED light-emitting particles is reflected by the auxiliary reflector bowls and enters the narrow aperture lens through the third freeform surface. Then, it is emitted from the light-emitting surface to assist the third part of the first beam and / or the second beam, thereby increasing the brightness of the third part.

[0016] Furthermore, according to the LED lighting module of this utility model, a second partition is also provided on the lower shell. The second partition is used to block the light from the main LED light-emitting particles and the auxiliary LED light-emitting particles corresponding to the third free-form surface in the second working surface group.

[0017] This invention, through structural optimization, eliminates the cutoff line baffle, thereby greatly shortening the Z-axis length of the LED lighting module, which can meet the structural design requirements of automotive lighting fixtures with limited Z-axis space. The auxiliary LED light-emitting particles in the flexible light source area can be selected to be set or not set according to customer optical requirements, thereby obtaining three light pattern distribution states, which provides better design flexibility and effectively avoids the problem of having to develop a corresponding LED lighting module for each light pattern distribution, resulting in high production costs and long production cycles. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention.

[0019] Figure 2 yes Figure 1 Sectional view of AA.

[0020] Figure 3 This is a perspective view of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the upper shell after disassembly in this utility model.

[0022] Figure 5 This is an exploded view of the structure of this utility model after removing the upper shell.

[0023] Figure 6This is a schematic diagram of the narrow aperture lens in this utility model.

[0024] Figure 7 This is a schematic diagram of the narrow aperture lens in this utility model.

[0025] Figure 8 yes Figure 6 A cross-sectional view of BB.

[0026] In the diagram: 1. Narrow aperture lens, 11. Light-emitting surface, 12. Light-receiving surface, 12. First working surface group 121, 1211. First freeform surface, 1212. Second freeform surface, 1213. Second working surface group 122. Mounting foot 13. Upper shell 2. Lens clamping platform 21. Reflection area 22. First reflector bowl group 221. Main reflector bowl 2211. Auxiliary reflector bowl 2212. Second reflector bowl group 222. Light source 3. First LED light source group 31. Main LED light-emitting particle 311. Auxiliary LED light-emitting particle 312. Second LED light source group 32. Lower shell 4. Lens clamping platform 41. Light source mounting platform 42. Heat dissipation fins 43. Three-zone light distribution structure 5. Protrusion 51. First supplementary light-receiving surface 511. Second supplementary light-receiving surface 512. Limiting structure 6. Limiting groove 61. Limiting post 62. First partition 7. Second partition 8. Striped light distribution pattern 9. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0028] like Figures 1-8As shown, a novel narrow-aperture LED lighting module for automobiles includes a narrow-aperture lens 1, an upper shell 2, a light source 3, and a lower shell 4. The lower shell 4 has a lens lower clamping platform 41 at its front end and a light source mounting platform 42 at its rear end, on which the light source 3 is fixed. The upper shell 2 has a lens upper clamping platform 21 at its front end and a reflective area 22 at its rear end, with a cutoff line forming structure on the reflective area 22. The upper shell 2 is fixed to the lower shell 4, such that the reflective area 22 is positioned above the light source 3, while the lens upper clamping platform 21 and the lens lower clamping platform 42 are positioned opposite each other. The lens clamping platform 41 secures the narrow aperture lens 1 between the upper shell 2 and the lower shell 4. The narrow aperture lens 1 has a light-emitting surface 11 at its front end and a light-incident surface 12 at its rear end; the light-emitting surface 11 is cylindrical. Light emitted from the light source 3 is reflected by the reflection area 22 and enters the narrow aperture lens 1 through the light-incident surface 12, then exits through the light-emitting surface 11 to form a near-light pattern with a cutoff line. A three-zone light distribution structure 5 is provided on the light-incident surface 12. The three-zone light distribution structure 5 provides supplementary light to zone III of the near-light pattern. The three-zone light distribution structure 5 consists of three parallel protrusions 51. Specifically, the length of each protrusion 51 is 1-1.5 mm, the width is 0.8-1.2 mm, and the distance between two adjacent protrusions 51 is 0.5-1 mm. The protrusions 51 on both sides facing the light source 3 are the first supplementary light incident surfaces 511. The horizontal cross-section of the first supplementary light incident surface 511 is a convex curve with a higher outer edge and a lower inner edge. The first supplementary light incident surface 511 is used to adjust and diffuse the angle of the incoming light. The protrusion 51 in the middle facing the light source 3 is the second supplementary light incident surface 512. The horizontal cross-section of the second supplementary light incident surface 512 is a convex curve. The second supplementary light incident surface 512 is used to diffuse the incoming light, thereby ensuring that the supplementary light provided to Zone III meets the requirements. In this embodiment, the length of the protrusion 51 is 1.45 mm, the width is 1 mm, and the distance between two adjacent protrusions 51 is 1 mm. Supplementary light to Zone III is provided through three parallel and spaced protrusions 51. To improve the service life of the light source 3, the lower shell 4 is made of die-cast aluminum and is provided with several heat dissipation fins 43. The heat dissipation fins 43 are used to increase the heat dissipation area and further improve the service life of the light source 3. The light source 3 is fixed to the light source mounting platform 42 of the lower shell 4 with screws. The upper shell 2 is fixed to the lower shell 4 with screws, so that the reflective area 22 on it is located above the light source 3. At the same time, the upper lens clamping platform 21 and the lower lens clamping platform 41 cooperate to fix the narrow aperture lens 1 between the upper shell 2 and the lower shell 4, thereby completing the installation of the LED lighting module. The installation is simple, which improves production efficiency and saves production costs. Through structural optimization, this LED lighting module eliminates the cutoff line baffle, thereby greatly shortening the Z-axis length of the LED lighting module, which can meet the structural design of automotive lamps with limited Z-axis space.

[0029] To improve the stability and accuracy of the installation of the narrow aperture lens 1, a limiting structure 6 is provided between the narrow aperture lens 1 and the lens upper clamping platform 21 and the lens lower clamping platform 41, respectively. The limiting structure 6 includes a limiting groove 61 and a limiting post 62. The limiting post 62 is inserted into the limiting groove 61 to achieve a limiting connection. Specifically, mounting feet 13 are symmetrically arranged on both sides of the narrow aperture lens 1. A limiting groove 61 is provided at the top of the mounting feet 13, and a limiting post 62 is provided at the bottom of the mounting feet 13. A limiting groove 61 is symmetrically arranged on the lower lens clamping platform 41, and a limiting post 62 is symmetrically arranged on the upper lens clamping platform 21. The limiting post 62 at the bottom of the narrow aperture lens 1 is inserted into the limiting groove 61, and the limiting post 62 at the top of the limiting groove 61 is inserted into the limiting groove 61, thereby limiting the narrow aperture lens 1 between the upper lens clamping platform 21 and the lower lens clamping platform 41. Then, the upper shell 2 is fixed to the lower shell 4 with screws to complete the installation. The limiting structure 6 greatly improves the accuracy and stability of the installation of the narrow aperture lens 1.

[0030] Furthermore, the light-incident surface 12 is composed of two working surface groups connected together, namely the first working surface group 121 and the second working surface group 122; the reflective area 22 is composed of two reflective bowl groups with side-emitting structures connected together, and the reflective bowl groups are provided with cut-off line forming structures, namely the first reflective bowl group 221 and the second reflective bowl group 222; the light source 3 includes two LED light source groups, namely the first LED light source group 31 and the second LED light source group 32; the first LED light source group 31 and the first reflective bowl group 221 are matched with the first working surface group 121. In the first LED light source group 31, the light emitted is reflected by the first reflector group 221 and enters the narrow aperture lens 1 through the first working surface group 121, and then exits through the light-emitting surface 11 to form a first beam. The second LED light source group 32, the second reflector group 222 and the second working surface group 122 cooperate, and the light emitted by the second LED light source group 32 is reflected by the second reflector group 222 and enters the narrow aperture lens 1 through the second working surface group 122, and then exits through the light-emitting surface 11 to form a second beam. The first beam and the second beam combine to form a near beam pattern.Specifically, when the LED lighting module is used in left-hand drive vehicle lights, the three-zone light distribution structure 5 is disposed on the first working surface group 121; the first working surface group 121 includes three freeform surfaces arranged side by side, namely a first freeform surface 1211, a second freeform surface 1212, and a third freeform surface 1213, the second freeform surface 1212 being located between the first freeform surface 1211 and the third freeform surface 1213, and connected to the second working surface group 122 through the first freeform surface 1211; the three-zone light distribution structure 5 is disposed on... On the first freeform surface 1211, and located at the center of the first freeform surface 1211; the first reflector bowl group 221 includes three main reflector bowls 2211 arranged side by side, and the main reflector bowls 2211 are provided with a cutoff line forming structure; the first LED light source group 31 includes three main LED light-emitting particles 311 arranged side by side, one main LED light-emitting particle 311 corresponds to one main reflector bowl 2211, and the main LED light-emitting particle 311 is located at or near the focal point of the main reflector bowl 2211; the first freeform surface 1211 The focal point of the second freeform surface 1211 is set on or near the cutoff line forming structure of the innermost main reflector bowl 2211; the focal point of the third freeform surface 1212 is set on or near the cutoff line forming structure of the middle main reflector bowl 2211; and the focal point of the third freeform surface 1213 is set on or near the cutoff line forming structure of the outermost main reflector bowl 2211. The light provided by the innermost main LED light-emitting particle 311 is reflected by the innermost main reflector bowl 2211 and enters the narrow aperture lens 1 through the first freeform surface 1211, and then exits through the light-emitting surface. The light emitted from surface 11 forms the first portion of the first light beam; the light provided by the central main LED light-emitting particle 311 is reflected by the central main reflector 2211 and enters the narrow aperture lens 1 through the second freeform surface 1212, and then exits from the light-emitting surface 11 to form the second portion of the first light beam; the light provided by the outermost main LED light-emitting particle 311 is reflected by the outermost main reflector 2211 and enters the narrow aperture lens 1 through the third freeform surface 1213, and then exits from the light-emitting surface 11 to form the third portion of the first light beam. The structure of the second LED light source group 32 is the same as that of the first LED light source group 31, and the structure of the second reflector group 222 is the same as that of the first reflector group 221. The second working surface group 122 does not have the three-zone light distribution structure 5, and is otherwise the same as that of the first working surface group 121, which will not be described in detail here. Those skilled in the art will understand that when the LED lighting module is used in right-hand drive vehicle lights, the three-zone light distribution structure 5 is set on the first freeform surface 1211 on the second working surface group 122 and is located at the center of the first freeform surface 1211. At this time, there is no three-zone light distribution structure 5 on the first working surface group 121.

[0031] To improve the quality of the near beam pattern, the horizontal cross-sections of the first freeform surface 1211, the second freeform surface 1212, and the third freeform surface 1213 are all convex curves with a lower outer edge and a higher inner edge. Furthermore, the curvature of the convex curve on the third freeform surface 1213 is greater than that on the second freeform surface 1212, which in turn is greater than that on the first freeform surface 1211. These three freeform surfaces are used to adjust the angle and diffuse the incoming light. Since the third freeform surface 1213 is located on the outermost side, the angle that the incoming light needs to adjust is the largest, hence the curvature of the convex curve on the third freeform surface 1213 is the largest. In this embodiment, the first part is the beam pattern within the range of -5 to -5° of the horizontal reference axis in the near beam pattern; the second part is the beam pattern within the range of 0 to 15° of the horizontal reference axis in the near beam pattern; and the third part is the beam pattern within the range of 0 to 40° of the horizontal reference axis in the near beam pattern. The first part, the second part, and the third part together form the first beam, which is the beam pattern within the range of -5 to 40° of the horizontal reference axis in the near beam pattern. The light emitted from the second LED light source group 32 is reflected by the second reflector bowl group 222 and enters the narrow aperture lens 1 through the second working surface group 122. It then exits through the light-emitting surface 11 to form a second beam. This second beam is a near-beam pattern within the range of -40° to 5° of the horizontal reference axis. The first beam and the second beam combine to form the near-beam pattern. Furthermore, to improve the quality of the near-beam pattern, striped light distribution patterns 9 can be provided on the second freeform surface 1212 and the third freeform surface 1213 as needed, increasing the width of the near-beam pattern.

[0032] To prevent light crosstalk between the main LED light-emitting particles 311 during operation, which would result in stray light in the near-beam pattern and affect optical quality, the lower housing 4 has several first partitions 7 between the light source 3 and the narrow aperture lens 1. These first partitions 7 are used to block light from two adjacent main LED light-emitting particles 311. In this embodiment, the lower housing 4 has five first partitions 7 between the light source 3 and the narrow aperture lens 1, forming six optical channels between them. This prevents light emitted by adjacent main LED light-emitting particles 311 from entering the corresponding freeform surface of the other, further improving the near-beam pattern quality.

[0033] To provide design flexibility for adjusting the light pattern distribution according to customer optical requirements, both the first reflector group 221 and the second reflector group 222 have auxiliary reflector bowls 2212 between the outermost main reflector bowl 2211 and the middle main reflector bowl 2211. Both the first LED light source group 31 and the second LED light source group 32 have flexible light source areas between the outermost main LED light-emitting particle 311 and the middle main LED light-emitting particle 311. The flexible light source area can be configured to include auxiliary LED light-emitting particles 312 depending on customer optical requirements. The light provided by the auxiliary LED light-emitting particles 312 is reflected by the auxiliary reflector bowls 2212 and enters the narrow aperture lens 1 through the third freeform surface 1213. It is then emitted from the light-emitting surface 11 to assist the third portion of the first beam and / or the second beam, thereby increasing the brightness of the third portion. Specifically, when the customer's optical requirement is a low-spec light pattern distribution, the auxiliary LED light-emitting particles 312 in the flexible light source area are not provided. When the customer's optical requirements specify a high-spec light pattern, auxiliary LED light-emitting particles 312 are installed in the flexible light source area. Additionally, depending on whether the LED lighting module is used for left-hand or right-hand vehicle lighting, auxiliary LED light-emitting particles 312 can be installed in one of the flexible light source areas on either side of the light source 3, thus adding another light pattern allocation option. Specifically, when the LED lighting module is used for left-hand vehicle lighting, auxiliary LED light-emitting particles 312 are installed in the flexible light source area of ​​the second LED light source group 32, while no auxiliary LED light-emitting particles 312 are installed in the flexible light source area of ​​the first LED light source group 31. This increases the brightness on the horizontal cutoff line side of the low beam pattern, resulting in a better light pattern quality than an LED lighting module without auxiliary LED light-emitting particles 312. Those skilled in the art will understand that when the LED lighting module is used for right-hand vehicle lighting, auxiliary LED light-emitting particles 312 are installed in the flexible light source area of ​​the first LED light source group 31, while no auxiliary LED light-emitting particles 312 are installed in the flexible light source area of ​​the second LED light source group 32. The auxiliary LED light-emitting particles 312 in the flexible light source area can be selected to be set or not set according to the customer's optical requirements, thereby obtaining three light pattern distribution states. This provides better design flexibility and effectively avoids the problem of having to develop a corresponding LED lighting module for each light pattern distribution, resulting in high production costs and long production cycles. In addition, to facilitate the setting of the auxiliary LED light-emitting particles 312, the installation position of the auxiliary LED light-emitting particles 312 can be marked in the flexible light source area.

[0034] To prevent stray light from appearing within 5 degrees of the horizontal reference axis on the horizontal cutoff line of the low beam, when the LED lighting module is used in left-hand drive vehicle lighting, a second partition 8 is also provided on the lower housing 4. The second partition 8 blocks light from the main LED light-emitting particles 311 and auxiliary LED light-emitting particles 312 corresponding to the third freeform surface 1213 in the second working surface group 122. This prevents light emitted from the main LED light-emitting particles 311 from crossing to the auxiliary LED light-emitting particles 312, thus preventing stray light from appearing within 5 degrees of the horizontal reference axis on the horizontal cutoff line of the low beam, further improving optical quality and enhancing driving safety. Those skilled in the art will understand that when the LED lighting module is used in right-hand drive vehicle lighting, the second partition 8 separates the main LED light-emitting particles 311 and auxiliary LED light-emitting particles 312 corresponding to the third freeform surface 1213 in the first working surface group 121.

Claims

1. A new type of narrow opening LED lighting module for vehicles, characterized in that, The LED lighting module comprises a narrow-opening lens, an upper shell, a light source and a lower shell, the front end of the lower shell is provided with a lens lower clamping platform, the rear end of the lower shell is provided with a light source mounting platform, the light source is fixed on the light source mounting platform, the front end of the upper shell is provided with a lens upper clamping platform, the rear end of the upper shell is provided with a reflection area, the reflection area is provided with a cut-off line forming structure, the upper shell is fixed on the lower shell, the reflection area is located above the light source, the lens upper clamping platform and the lens lower clamping platform cooperate to fix the narrow-opening lens between the upper shell and the lower shell, the front end of the narrow-opening lens is provided with an out-light surface, the rear end is provided with an in-light surface, the out-light surface is in a cylindrical shape, the light emitted by the light source is reflected by the reflection area, enters the narrow-opening lens through the in-light surface, and then is emitted by the out-light surface to form a low beam light pattern with a bright-dark cut-off line shape, the in-light surface is provided with a three-zone light distribution structure, the three-zone light distribution structure is used for providing supplementary light to the III zone in the low beam light pattern, and the three-zone light distribution structure is three protrusions arranged side by side.

2. The LED lighting module of claim 1, wherein, The length of the protrusion is 1-1.5 mm, the width is 0.8-1.2 mm, and the distance between the two adjacent protrusions is 0.5-1 mm.

3. The LED lighting module of claim 1, wherein, The surface of the protrusions on both sides towards the light source is a first supplementary light in-light surface, the horizontal cross-sectional line of the first supplementary light in-light surface is a convex curve with high outside and low inside, and the first supplementary light in-light surface is used for angle adjustment and diffusion of the entering light; the surface of the protrusion in the middle towards the light source is a second supplementary light in-light surface, the horizontal cross-sectional line of the second supplementary light in-light surface is a convex curve, and the second supplementary light in-light surface is used for diffusion of the entering light.

4. The LED lighting module of claim 1, wherein, The in-light surface is composed of two working surface groups, which are a first working surface group and a second working surface group; the reflection area is composed of two reflection bowl groups of side light emitting structures, the reflection bowl groups are provided with a cut-off line forming structure, which are a first reflection bowl group and a second reflection bowl group; the light source comprises two LED light source groups, which are a first LED light source group and a second LED light source group; the light emitted by the first LED light source group is reflected by the first reflection bowl group, enters the narrow-opening lens through the first working surface group, and then is emitted by the out-light surface to form a first light beam; the light emitted by the second LED light source group is reflected by the second reflection bowl group, enters the narrow-opening lens through the second working surface group, and then is emitted by the out-light surface to form a second light beam, and the first light beam and the second light beam combine to form the low beam light pattern.

5. The LED lighting module of claim 4, wherein, The LED lighting module is used for a left-hand drive automobile lamp, and the three-zone light distribution structure is arranged on the first working surface group.

6. The LED lighting module of claim 5, wherein, The first working surface group comprises three free curved surfaces arranged side by side, namely a first free curved surface, a second free curved surface and a third free curved surface, the second free curved surface is located between the first free curved surface and the third free curved surface and is connected with the first working surface group through the first free curved surface, the three-zone light distribution structure is arranged on the first free curved surface and is located at the center of the first free curved surface; the first reflector bowl group comprises three main reflector bowls arranged side by side, and the main reflector bowls are provided with a cut-off line forming structure; the first LED light source group comprises three main LED light emitting particles arranged side by side; the light provided by the innermost main LED light emitting particle is reflected by the innermost main reflector bowl, enters the narrow opening lens through the first free curved surface, and is then emitted by the light emitting surface to form a first part of the first light beam; the light provided by the intermediate main LED light emitting particle is reflected by the intermediate main reflector bowl, enters the narrow opening lens through the second free curved surface, and is then emitted by the light emitting surface to form a second part of the first light beam; the light provided by the outermost main LED light emitting particle is reflected by the outermost main reflector bowl, enters the narrow opening lens through the third free curved surface, and is then emitted by the light emitting surface to form a third part of the first light beam; the structure of the second LED light source group is the same as that of the first LED light source group, the structure of the second reflector bowl group is the same as that of the first reflector bowl group, and the second working surface group is not provided with a three-zone light distribution structure and is the same as the first working surface group.

7. The LED lighting module of claim 6, wherein, The horizontal section lines of the three free curved surfaces are all convex curves with low outer and high inner, the three free curved surfaces are respectively used for angle adjustment and diffusion of the entering light, and the curvature of the convex curve on the third free curved surface is greater than that of the convex curve on the second free curved surface, which is greater than that of the convex curve on the first free curved surface.

8. The LED lighting module of claim 6, wherein, The lower shell is provided with a plurality of first partitions between the light source and the narrow opening lens, and the first partitions are used for light blocking of two adjacent main LED light emitting particles.

9. The LED lighting module of claim 8, wherein, The first reflector bowl group and the second reflector bowl group are both provided with auxiliary reflector bowls between the outermost main reflector bowl and the intermediate main reflector bowl, the first LED light source group and the second LED light source group are both provided with flexible light source areas between the outermost main LED light emitting particle and the intermediate main LED light emitting particle, the flexible light source areas are provided with or not provided with auxiliary LED light emitting particles according to customer optical requirements; the light provided by the auxiliary LED light emitting particles is reflected by the auxiliary reflector bowls, enters the narrow opening lens through the third free curved surface, and is then emitted by the light emitting surface to assist the third part of the first light beam and / or the second light beam, thereby increasing the brightness of the third part.

10. The LED lighting module of claim 9, wherein, The lower shell is also provided with a second partition, and the second partition is used for light blocking of the main LED light emitting particle and the auxiliary LED light emitting particle corresponding to the third free curved surface in the second working surface group.

Images