Light guide penetrating type LED automobile rear position lamp capable of maximizing Y-direction area illumination

Abstract

The utility model discloses a light guide penetrating type LED automobile rear position lamp capable of maximizing illumination in a Y-direction area. The light guide penetrating type LED automobile rear position lamp comprises a shell, a light guide plate and a light guide plate, an LED module group; a light guide bar; the light guide bracket is arranged in the inner cavity of the shell and is used for supporting and positioning the light guide strip; the inner light distribution mirror abuts against the light guide support and covers the outer portion of the light emitting face of the light guide strip so as to conduct diffuse reflection on the light. And the mask is arranged on the shell in a covering manner and covers the periphery of the inner lens. According to the utility model, the light guide strip uniformly refracts the light emitted by the LED module through the sawtooth reflection lines, and the light is scattered outwards through the light emitting surface, so that the light can be diverged wider and can be well irradiated to each corner of the inner lens, and the Y-direction area of the position lamp after illumination is maximized by using the fewest LED lamp beads; the uniformity of light rays is effectively enhanced, the cost and the energy consumption are reduced, the resource utilization rate is improved, and the rear position lamp can be popularized and applied to rear position lamps of various vehicle types.

Description

Technical field:

[0001] The utility model relates to the technical field of automobile rear position lamps, in particular to a light-guide through-type LED automobile rear position lamp that maximizes illumination of a Y-direction area. Background technology:

[0002] Rear position lights, also known as vehicle marker lights, indicate the vehicle's presence and approximate width, making them easier for other vehicles to identify when meeting or overtaking. They are also the most visible component during nighttime driving, drawing the most attention and ensuring the driver of the following vehicle is always aware of them. In recent years, with the advancement of LED lighting technology, the overall design of rear position lights has gradually shifted from a separate design to a slender, through-type design.

[0003] Currently on the market, the most common way to achieve through-type rear position lights with good luminous uniformity is the solution of LED direct illumination + emulsified internal light distribution mirror. This solution can maximize the illumination of the Y-direction area of ​​the lamp.

[0004] For example, patent application CN 110778987 A discloses a combined rear lamp that integrates side marker lights and rear position lights. The lamp comprises a lamp body and an outer mirror connected to the lamp body. The outer mirror and the lamp body form a lamp chamber. A decorative frame and an inner mirror are located within the lamp chamber. The inner mirror is positioned behind the outer mirror, and the decorative frame is positioned behind the inner mirror. Upper and lower circuit boards are fixed to the decorative frame, each mounting corresponding side marker light LED modules and rear position light LED modules. The side marker light LED modules are positioned near the exterior of the vehicle body, while the rear position light LED modules are positioned near the interior. This design ensures uniform illumination of the side marker and rear position lights, meeting relevant regulatory requirements.

[0005] However, this existing structure still has the following shortcomings:

[0006] In this technical solution, the internal light distribution mirror adopts emulsified material, and the LED module uses a large number of LED lamp beads. Overall, the cost is high, the energy consumption is large, and the resource utilization rate is not high.

[0007] In view of this, the inventors propose the following technical solutions. Utility model content:

[0008] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a light-guide through-type LED automobile rear position lamp that can maximize the illumination of a Y-direction area.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions: a light-guiding through-type LED automobile rear position lamp with maximum illumination in the Y-direction area, comprising: a shell having an inner cavity formed therein; an LED module, which is arranged in the inner cavity of the shell; a light-guiding bar, which is arranged in the inner cavity of the shell and is used to reflect the light emitted by the LED module, the light-guiding bar being formed with a serrated reflective pattern for uniformly refracting the light, and the light-guiding bar being further formed with a light-emitting surface for emitting light outward; a light-guiding bracket, which is arranged in the inner cavity of the shell and is used to support and position the light-guiding bar; an inner light-distributing mirror, which abuts against the light-guiding bracket and covers the outside of the light-emitting surface of the light-guiding bar to diffusely reflect the light; and a mask, which covers the shell and covers the outer periphery of the inner light-distributing mirror.

[0010] Furthermore, in the above technical solution, a module bracket for cooperating with the light guide bracket to fix the light guide bar is further provided in the housing. In addition, the LED module is fixed to the module bracket by at least two first locking bolts.

[0011] Furthermore, in the above technical solution, the light guide strip includes: a light-guiding section that is covered on the outside of the LED lamp bead of the LED module and is used to lead out the light, and a reflective section that is integrally formed with the light-guiding section and is used to uniformly refract the light, wherein the reflective section and the light-guiding section are bent, and the length of the reflective section is greater than the length of the light-guiding section, and the serrated reflective pattern is formed on the reflective section.

[0012] Furthermore, in the above technical solution, the light guide bar is integrally formed with a positioning portion on the light guide section, and the positioning portion is formed with a first positioning block and a first positioning hole for cooperating with the light guide bracket for positioning. Correspondingly, the light guide bracket is formed with a second positioning hole that matches the first positioning block, and the light guide bracket is also formed with a second positioning column that matches the first positioning hole; the positioning portion is also protruded with a convex pattern for preventing the generation of bright spots; the positioning portion is provided with a third positioning column and a fourth positioning column for positioning with the module bracket, and the positioning portion is also provided with a fifth positioning column and a sixth positioning column for positioning with the LED module.

[0013] Furthermore, in the above technical solution, a third positioning hole is formed on the module bracket for matching and positioning with the third positioning column, and a fourth positioning hole is also formed on the module bracket for matching and positioning with the fourth positioning column; a fifth positioning hole is formed on the LED module for matching with the fifth positioning column, and a sixth positioning hole is also formed on the LED module for matching with the sixth positioning column.

[0014] Furthermore, in the above technical solution, a snap-fitting protrusion is protruding from the module bracket for snapping with the light guide bracket, and a snap-fitting hole is provided on the side wall of the light guide bracket for matching with the snap-fitting protrusion.

[0015] Furthermore, in the above technical solution, the inner light distribution mirror is fixed to the light guide bracket by a second screw, wherein a screw column is formed on the inner light distribution mirror, and a screw hole is formed on the light guide bracket, and the second screw passes through the screw hole and is installed in the screw column.

[0016] Furthermore, in the above technical solution, a buckle groove for supporting and positioning the light guide bar is formed on the light guide bracket, and a limiting rib for clamping and limiting the light guide bar is also provided in the buckle groove.

[0017] Furthermore, in the above technical solution, the LED module includes an LED board and LED lamp beads arranged on the LED board, the LED board is provided with at least two first through-holes for the first locking bolt to pass through, and the module bracket is provided with at least two first locking parts for the first locking bolt to be inserted and locked.

[0018] Furthermore, in the above technical solution, the longitudinal cross-section of the light guide strip is fan-shaped; the light emitting surface includes a plurality of photon-emitting surfaces; and the mask and the shell are connected and sealed by hot plate welding.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the existing technology: In the present invention, the light guide strip evenly refracts the light emitted by the LED module through the sawtooth reflective pattern, and scatters it outward through the light-emitting surface, so that the light can be dispersed more widely and can well illuminate every corner of the inner light distribution mirror, thereby achieving the maximum Y-direction area of ​​​​the rear position lamp illuminated with the least number of LED lamp beads. It also effectively enhances the uniformity of light, reduces costs and energy consumption, and improves resource utilization. It can be promoted and applied to the rear position lamps of various models. In addition, compared with the existing structure, the present invention adopts a buckle and screw fixing method for internal installation in terms of structure, and the positioning method of the light guide strip is mainly based on buckles, which effectively avoids the influence of complex assembly structure on the optical lighting effect and also improves assembly work efficiency. Description of the drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a cross-sectional schematic diagram of the present utility model;

[0022] Figure 3 It is an exploded schematic diagram of the utility model;

[0023] Figure 4 It is a three-dimensional schematic diagram of the light guide strip in the utility model;

[0024] Figure 5 This is a three-dimensional schematic diagram of the LED module in the present invention;

[0025] Figure 6 It is a three-dimensional schematic diagram of the light guide bracket in the utility model;

[0026] Figure 7 It is a three-dimensional schematic diagram of the module bracket in the utility model;

[0027] Figure 8 This is a schematic cross-sectional view of the assembly of the light guide strip and the light guide bracket in the utility model;

[0028] Figure 9 It is a schematic longitudinal section diagram of the light guide bar in the utility model. Specific implementation method:

[0029] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0030] See Figures 1 to 9 As shown, a light-guiding through-type LED automobile rear position lamp with maximum illumination in the Y-direction area is provided, which comprises: a shell 1, which is formed with an inner cavity; an LED module 2, which is arranged in the inner cavity of the shell 1; a light-guiding bar 3, which is arranged in the inner cavity of the shell 1 and is used to reflect the light emitted by the LED module 2, and the light-guiding bar 3 is formed with a sawtooth reflective pattern 321 for uniformly refracting the light, and the light-guiding bar 3 is also formed with a light-emitting surface 301 for allowing the light to be emitted outward; a light-guiding bracket 4, which is arranged in the inner cavity of the shell 1 and is used to support and position the light-guiding bar 3; an inner light-distributing mirror 5, which abuts against the light-guiding bracket 4 and covers the outside of the light-emitting surface 301 of the light-guiding bar 3 to diffusely reflect the light; and a mask 6, which covers the shell 1 and covers the outer periphery of the inner light-distributing mirror 5.

[0031] In the present invention, the light guide strip 3 evenly refracts the light emitted by the LED module 2 through the sawtooth reflective pattern 321, and scatters the light outward through the light-emitting surface 301, so that the light can be diverged more widely and can well illuminate every corner of the inner light distribution mirror 5, thereby achieving the maximum Y-direction area of ​​the rear position lamp illuminated with a minimum number of LED lamp beads 22, effectively enhancing the uniformity of the light, reducing costs and energy consumption, and improving resource utilization. The utility model can be promoted and applied to the rear position lamps of various models.

[0032] The housing 1 further includes a module bracket 7 for cooperating with the light guide bracket 4 to fix the light guide bar 3 . In addition, the LED module 2 is fixed to the module bracket 7 via at least two first locking bolts 81 .

[0033] The light guide bar 3 includes: a light guide section 31 that is covered on the outside of the LED lamp bead 22 of the LED module 2 and is used to guide light out; and a reflective section 32 that is integrally formed with the light guide section 31 and is used to uniformly refract light, wherein the reflective section 32 and the light guide section 31 are bent, and the length of the reflective section 32 is greater than that of the light guide section 31, and the sawtooth reflective pattern 321 is formed on the reflective section 32. Here, the light is totally reflected in the light guide bar 3. After reaching the sawtooth reflective pattern 321, the light is reflected by the sawtooth reflective pattern 321 and emitted out of the light guide bar 3, which can make the light diverge wider and can well illuminate every corner of the inner light distribution mirror 6. In addition, the inner and outer surfaces of the light distribution mirror 5 are formed with frosted leather texture. When the light passes through the light distribution mirror 5, it will be diffusely reflected before being emitted to the mask 6, thereby increasing the uniformity of its light.

[0034] The light guide bar 3 is integrally formed with a positioning portion 33 on the light guide section 31, and the positioning portion 33 is formed with a first positioning block 331 and a first positioning hole 332 for cooperating with the light guide bracket 4 for positioning. Correspondingly, the light guide bracket 4 is formed with a second positioning hole 431 that matches the first positioning block 331, and the light guide bracket 4 is also formed with a second positioning column 432 that matches the first positioning hole 332; the positioning portion 33 is also protruded with a convex pattern 330 for preventing the generation of bright spots; the positioning portion 33 is provided with a third positioning column 333 and a fourth positioning column 334 for positioning with the module bracket 7, and the positioning portion 33 is also provided with a fifth positioning column 335 and a sixth positioning column 336 for positioning with the LED module 2. Here, the convex pattern 330 is located on the outer surface of the positioning part 33 close to the lighting area of ​​the LED lamp bead 22. The surface of the convex pattern 330 is composed of multiple curved surfaces, which can prevent stray light from being emitted outward to prevent bright spots from being generated on the surface of the positioning part 33, thereby ensuring the uniformity of its light.

[0035] The module bracket 7 is formed with a third positioning hole 733 for matching and positioning with the third positioning post 333, and the module bracket 7 is also formed with a fourth positioning hole 734 for matching and positioning with the fourth positioning post 334; the LED module 2 is formed with a fifth positioning hole 235 for matching with the fifth positioning post 335, and the LED module 2 is also formed with a sixth positioning hole 236 for matching with the sixth positioning post 336. Here, compared with the existing structure, the internal installation of the present utility model is more likely to use buckles and screws for fixing. The positioning method of the light guide bar 3 is mainly based on buckles, which effectively avoids the influence of complex assembly structure on the optical lighting effect and also improves assembly work efficiency.

[0036] A snap-fitting protrusion 72 for snapping with the light guide bracket 4 is protruding from the module bracket 7 , and a snap-fitting hole 42 for matching with the snap-fitting protrusion 72 is formed on the side wall of the light guide bracket 4 .

[0037] The inner light distribution mirror 5 is fixed to the light guide bracket 4 by a second screw 82 , wherein a screw column 51 is formed on the inner light distribution mirror 5 and a screw countersunk hole 451 is formed on the light guide bracket 4 . The second screw 82 passes through the screw countersunk hole 451 and is installed in the screw column 51 .

[0038] The light guide bracket 4 has a recessed groove 43 formed therein for supporting and positioning the light guide bar 3. This groove 43 also includes a retaining rib 430 for securing and retaining the light guide bar 3. After the first positioning block 331 and first positioning hole 332 of the light guide bar 3 are assembled with the light guide bracket 4, the reflective segment 32 of the light guide bar 3 is pressed into the groove 43 of the light guide bracket 4 until both sides of the light guide bar 3 engage the retaining rib 430, effectively securing the light guide bar 3 in place.

[0039] The LED module 2 includes an LED board 21 and LED lamp beads 22 mounted on the LED board 21. The LED board 21 is provided with at least two first through-holes 211 for the first locking bolts 81 to pass through. The module bracket 7 is provided with at least two first locking portions 711 for the first locking bolts 81 to be inserted and locked. Here, the first locking bolts 81 lock the LED module 2 and the module bracket 7 and also firmly press the light guide bar 3 between the LED module 2 and the module bracket 7, thereby improving structural stability and extending service life while preventing the complex assembly structure from affecting the optical lighting effect.

[0040] The longitudinal cross-section of the light guide bar 3 is fan-shaped; the light-emitting surface 301 includes multiple light-emitting sub-surfaces 3011; the mask 6 is sealed to the housing 1 via hot plate welding. Once all other components are assembled, the mask 6 is placed in the welding fixture and sealed to the housing 1 via hot plate welding. After annealing and cooling, assembly is complete. The longitudinal cross-section of the light guide bar 3 is defined as a radially oriented section of the light guide bar 3.

[0041] In summary, in the present invention, the light guide strip 3 evenly refracts the light emitted by the LED module 2 through the sawtooth reflective pattern 321, and scatters it outward through the light-emitting surface 301, so that the light can be dispersed more widely and can well illuminate every corner of the inner light distribution mirror 5. This achieves the maximum Y-direction area of ​​the rear position lamp illuminated with a minimum number of LED lamp beads 22, effectively enhances the uniformity of the light, reduces costs and energy consumption, and improves resource utilization. It can be widely applied to the rear position lamps of various models. In addition, compared with the existing structure, the structure of the present invention adopts a fixing method of buckles and screws for internal installation. The positioning method of the light guide strip 3 is mainly based on buckles, which effectively avoids the influence of complex assembly structure on the optical lighting effect and also improves assembly work efficiency.

[0042] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A light-guide through-type LED rear position lamp for automobiles with maximum illumination in the Y direction, characterized in that: include: A housing (1), wherein an inner cavity is formed in the housing (1); An LED module (2) is arranged in the inner cavity of the housing (1); A light guide bar (3) is arranged in the inner cavity of the housing (1) and is used to reflect light emitted by the LED module (2); the light guide bar (3) is formed with a sawtooth reflective pattern (321) for uniformly refracting light, and the light guide bar (3) is also formed with a light emitting surface (301) for emitting light outwards; A light guide bracket (4), which is arranged in the inner cavity of the housing (1) and is used to support and position the light guide bar (3); An inner light distribution mirror (5) rests against the light guide bracket (4) and covers the outside of the light emitting surface (301) of the light guide bar (3) to diffusely reflect the light; A mask (6) is provided on the housing (1) and covers the periphery of the inner light distribution mirror (5).

2. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 1, characterized in that: A module bracket (7) for cooperating with the light guide bracket (4) to fix the light guide bar (3) is also provided in the housing (1); in addition, the LED module (2) is fixed to the module bracket (7) via at least two first locking bolts (81).

3. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 2, characterized in that: The light guide strip (3) comprises: a light guide section (31) which is covered on the outside of the LED lamp bead (22) of the LED module (2) and is used to guide light out; and a reflective section (32) which is integrally formed with the light guide section (31) and is used to uniformly refract light, wherein the reflective section (32) and the light guide section (31) are bent, and the length of the reflective section (32) is greater than the length of the light guide section (31), and the sawtooth reflective pattern (321) is formed on the reflective section (32).

4. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 3, characterized in that: The light guide strip (3) is integrally formed with a positioning portion (33) on the light guide section (31); the positioning portion (33) is formed with a first positioning block (331) and a first positioning hole (332) for cooperating with the light guide bracket (4) for positioning; correspondingly, the light guide bracket (4) is formed with a second positioning hole (431) matching the first positioning block (331); the light guide bracket (4) is also formed with a second positioning column (432) matching the first positioning hole (332); the positioning portion (33) is also protruded with a convex pattern (330) for preventing the generation of bright spots; the positioning portion (33) is provided with a third positioning column (333) and a fourth positioning column (334) for positioning with the module bracket (7); the positioning portion (33) is also provided with a fifth positioning column (335) and a sixth positioning column (336) for positioning with the LED module (2).

5. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 4, characterized in that: The module bracket (7) is formed with a third positioning hole (733) for matching and positioning with the third positioning column (333), and the module bracket (7) is also formed with a fourth positioning hole (734) for matching and positioning with the fourth positioning column (334); the LED module (2) is formed with a fifth positioning hole (235) for matching with the fifth positioning column (335), and the LED module (2) is also formed with a sixth positioning hole (236) for matching with the sixth positioning column (336).

6. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 5, characterized in that: A snap-fitting protrusion (72) for snapping with the light guide bracket (4) is formed on the module bracket (7), and a snap-fitting hole (42) for matching with the snap-fitting protrusion (72) is provided on the side wall of the light guide bracket (4).

7. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to claim 2, characterized in that: The LED module (2) comprises an LED board (21) and an LED lamp bead (22) arranged on the LED board (21); the LED board (21) is provided with at least two first through-holes (211) for the first locking bolt (81) to pass through; and the module bracket (7) is provided with at least two first locking portions (711) for the first locking bolt (81) to be inserted and locked.

8. The light-guide through-type LED automotive rear position lamp with maximum Y-direction illumination according to any one of claims 1 to 7, characterized in that: The inner light distribution mirror (5) is fixed to the light guide bracket (4) via a second screw (82), wherein a screw column (51) is formed on the inner light distribution mirror (5), a screw expansion hole (451) is formed on the light guide bracket (4), and the second screw (82) passes through the screw expansion hole (451) and is installed in the screw column (51).

9. The light-guide through-type LED automotive rear position lamp with maximum Y-direction illumination according to any one of claims 1 to 7, characterized in that: A buckle groove (43) for supporting and positioning the light guide bar (3) is formed in a recessed manner on the light guide bracket (4), and a limiting rib (430) for clamping and limiting the light guide bar (3) is also provided in the buckle groove (43).

10. The light-guide through-type LED automobile rear position lamp with maximum Y-direction illumination according to any one of claims 1 to 7, characterized in that: The longitudinal cross-section of the light guide strip (3) is fan-shaped; the light emitting surface (301) includes a plurality of photon emitting surfaces (3011); and the mask (6) and the housing (1) are connected and sealed by hot plate welding.

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