Improved ultrathin vehicle logo lamp

Abstract

The utility model discloses an improved ultrathin car logo lamp which comprises a lamp shell, a light guide plate and a light-emitting face cover, the light guide plate and the light-emitting face cover are both installed on the lamp shell, the light-emitting face cover is located on the side, away from the lamp shell, of the light guide plate, the middle of the light guide plate is provided with a light inlet portion which protrudes towards the direction away from the light-emitting face cover, and the cross section of the light inlet portion is Y-shaped. A PCBA integrated with a plurality of LED lamp beads is further arranged in the lamp shell, the light-emitting face of each LED lamp bead on the PCBA right faces the light-in face of the light guide plate, the large face of the side, close to the light guide plate, of the light-emitting face cover is the light-in face of the light-emitting face cover, and the large face of the side, right facing the light-in face of the light-emitting face cover, of the light guide plate is the light-out face of the light-emitting face cover. And a light-transmitting vehicle logo pattern is arranged on the light-emitting mask. By adopting the structure, the optical utilization rate is high; the LED is prevented from being scratched; the assembly is convenient, and the cost is reduced; the LED lamp is suitable for the requirement of customers for higher brightness and better in heat resistance, and meanwhile the longitudinal depth of the whole lamp is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle logo lights, in particular to an improved ultra-thin vehicle logo light. Background Art

[0002] The Chinese utility model patent application filed by the applicant, application number CN2024227743990, relates to an ultra-thin vehicle logo lamp. The PCBA is installed at both ends of the light guide plate, which reduces the number of LEDs used and lowers production costs. At the same time, the entire lamp requires less vertical space and has fewer parts, meeting the requirements of lightweight design. However, the patent still has the following technical problems:

[0003] 1. For long strip products, the light entry method of both ends will result in a larger gap between the light guide plate and one side of the LED. The light guide plate can only be positioned by the position of the LED on one side, so the matching tolerance on the other side will inevitably increase, and the optical utilization rate will be poor. If the light guide plate is placed in the middle, the gap tolerance between the light guide plate and the LED on both sides will be larger.

[0004] 2. Because the LED is on the side of the light guide plate, the gap between the LED light-emitting surface and the light-incoming surface of the light guide plate is usually only 0.5mm. As a result, no matter whether the light guide plate or the PCBA is installed first, there is a risk of damaging the LED.

[0005] 3. Since there are PCBAs on both sides, the PCBAs at both ends must be connected using wiring harnesses, so the entire lamp must be connected externally in the form of wiring harnesses, which requires connectors, terminals, wiring harnesses, tapes, etc., making assembly cumbersome and increasing costs.

[0006] 4. To ensure the heat dissipation area of ​​the PCBA, the entire lamp must extend the space to meet the effective area and assembly requirements of the PCBA. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides an improved ultra-thin vehicle logo light.

[0008] The technical solution is as follows:

[0009] The present application relates to an improved ultra-thin vehicle logo lamp, comprising a lamp housing and a light guide plate and a light-emitting mask both mounted on the lamp housing, the light-emitting mask being located on a side of the light guide plate away from the lamp housing, a light-inlet portion being protruding away from the light-emitting mask and having a "Y"-shaped cross-section being provided in the middle of the light guide plate, the light-inlet portion extending along the width direction of the light guide plate, and a side edge thereof away from the light-emitting mask being the light-inlet surface of the light guide plate, a PCBA integrating a plurality of LED lamp beads being further provided in the lamp housing, the light-emitting surface of each LED lamp bead on the PCBA being opposite to the light-inlet surface of the light guide plate, the large surface of the light-emitting mask being close to the light guide plate being its light-inlet surface, the large surface of the light guide plate being opposite to the light-inlet surface of the light-emitting mask being its light-emitting surface, and a vehicle logo graphic that is translucent is provided on the light-emitting mask.

[0010] The above-mentioned improved ultra-thin vehicle logo lamp adopts the central light entry of the light guide plate. The matching direction of the light guide plate and each LED on the PCBA is unique, which facilitates the gap control between the two and improves the optical utilization rate. The light guide plate and PCBA are assembled in a covering manner to avoid scratching the LED. There is only one PCBA, and no wiring harness is required to connect it, which facilitates assembly and reduces costs. The PCBA area can be made larger to meet customers' higher brightness needs, with better heat resistance and shortened longitudinal depth of the entire lamp.

[0011] In some embodiments, the light guide plate includes two light-emitting portions relatively arranged on both sides of the light-inlet portion, both light-emitting portions are flat plate structures arranged parallel to the inner side of the light-emitting mask, and the large surfaces of the two light-emitting portions close to the light-emitting mask together constitute the light-emitting surface of the light guide plate, the light-inlet portion includes a light-inlet segment and two light-guiding segments that together constitute a "Y"-shaped structure, the two light-guiding segments extend from the side edge of the light-inlet segment close to the light-emitting mask to the side edge of the adjacent end of the corresponding light-emitting portion, and the side edge of the light-inlet segment away from the light-emitting mask is the light-inlet surface of the light guide plate.

[0012] In some embodiments, limiting portions are respectively provided at both ends of the light-inlet portion, and limiting protrusions are provided on the outer edges of the limiting portions on the side away from the light-emitting mask. The PCBA is provided with limiting grooves corresponding to the limiting protrusions one by one, and each limiting protrusion is embedded in the corresponding limiting groove, and the PCBA is supported on the outer edge of the limiting portion on the side away from the light-emitting mask.

[0013] In some embodiments, the light-emitting mask is a milky white PC diffuser.

[0014] In some embodiments, the LED lamp beads on the PCBA are arranged linearly along the extension direction of the light incident surface of the light guide plate.

[0015] In some embodiments, a first opening groove is provided on the lamp housing, and a plurality of supporting protrusions are provided at the bottom of the first opening groove, and the supporting protrusions jointly support a side surface of the light guide plate close to the bottom of the first opening groove.

[0016] In some embodiments, a plurality of snap-fit ​​protrusions are provided on the groove wall of the first opening groove, and a positioning protrusion corresponding to each snap-fit ​​protrusion is provided on a surface of the light guide plate away from the bottom of the first opening groove, and each positioning protrusion is snap-fitted with the corresponding snap-fit ​​protrusion.

[0017] In some embodiments, a second opening groove is provided at the bottom of the first opening groove, and a plurality of scattered positioning pins are provided at the bottom of the second opening groove. Positioning holes corresponding to each positioning pin are provided on the PCBA, and each positioning pin passes through the corresponding positioning hole.

[0018] In some embodiments, the lamp housing is provided with an air hole, and an air permeable membrane is provided in the air hole.

[0019] In some embodiments, a connector is further included, which includes a pin integrated on the PCBA and a connector housing integrated on the outside of the lamp housing. The connector housing is an annular structure, and the outer end of the pin extends into the connector housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the utility model and the vehicle body;

[0021] Figure 2 for Figure 1 AA section view in;

[0022] Figure 3 It is a structural diagram of the light guide plate and PCBA;

[0023] Figure 4 Schematic diagram of the structure of the light guide plate;

[0024] Figure 5 Schematic diagram of the installation structure of the lamp housing and the light guide plate;

[0025] Figure 6 This is a schematic diagram of the installation structure of the lamp housing and PCBA;

[0026] Figure 7 Schematic diagram of the back structure of the lamp housing. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] like Figures 1 to 7 As shown, an improved ultra-thin vehicle logo light mainly includes a lamp housing 1, a PCBA 2, a light guide plate 3 and a light-emitting mask 4.

[0029] like Figures 2 to 5As shown, the light guide plate 3 is a plate-like structure, with a light inlet portion 31 protruding from the light-emitting mask 4 and having a Y-shaped cross-section. The light inlet portion 31 extends along the width of the light guide plate 3, and its side edge away from the light-emitting mask 4 serves as the light inlet surface of the light guide plate 3. Specifically, the light guide plate 3 includes a light inlet portion 31 and two light-emitting portions 34, which are disposed on either side of the light inlet portion 31. Both light-emitting portions 34 are flat plate structures disposed parallel to the inner side of the light-emitting mask 4, and the large surfaces of the two light-emitting portions 34 on the side closest to the light-emitting mask 4 together constitute the light outlet surface of the light guide plate 3. The light inlet portion 31 includes a light inlet segment 311 and two light guiding segments 312, which together form a Y-shaped structure. The two light guiding segments 312 extend from the side edge of the light inlet segment 311 near the light-emitting mask 4 to the side edge of the corresponding light-emitting portion 34 near the end. The side edge of the light inlet segment 311 away from the light-emitting mask 4 serves as the light inlet surface of the light guide plate 3. That is, the end of the light-inlet section 311 is connected to the front ends of the two light-guiding sections 312, and the ends of the two light-guiding sections 312 are respectively connected to the front ends of the corresponding light-emitting sections 34. The function of the "Y"-shaped light-inlet section 31 is to guide the light from the same place in two directions, thereby illuminating the entire light guide plate 3. The light guide plate 3 adopts a central light-inlet method, which facilitates the control of the gap between the light guide plate 3 and the LED lamp beads 21 on the PCBA2, avoiding the problem of large gap tolerance and poor optical utilization caused by the light-inlet method at both ends of the light guide plate 3. The light guide plate 3 is integrally formed and is preferably made of transparent PMMA.

[0030] Furthermore, a limit portion 32 is provided at each end of the light inlet portion 31. A plurality of limit protrusions 321 are provided on the outer edge of the limit portion 32 away from the light-emitting mask 4. The limit portions 32 limit and prevent the PCBA 2 from being scratched during installation.

[0031] Furthermore, a plurality of scattered positioning protrusions 33 are provided on the edge of the light emitting surface of the light guide plate 3 along the length direction. The positioning protrusions 33 facilitate the installation of the light guide plate 3 .

[0032] like Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, PCBA 2 is located on the light-incoming side of light guide plate 3. Several LED beads 21 are integrated onto PCBA 2, with the emitting surface of each LED bead 21 facing the light-incoming surface of light guide plate 3. The LED beads 21 on PCBA 2 are arranged linearly along the extension direction of the light-incoming surface of light guide plate 3. In this embodiment, only a single row of LED beads 21 is needed to illuminate the entire light guide plate 3 through the Y-shaped light-incoming portion 31 of the light guide plate 3. If the overall brightness requirement is not high, even a single LED bead 21 can be used, significantly reducing production costs.

[0033] Furthermore, a plurality of limiting grooves 22 are respectively provided on the two side edges of the PCBA2 near the limiting portion 32, each limiting groove 22 corresponds to each limiting protrusion 321 one by one, each limiting protrusion 321 is embedded in the corresponding limiting groove 22, and the PCBA2 is supported on the outer edge of the limiting portion 32 away from the light-emitting mask 4.

[0034] Furthermore, PCBA 2 is connected to the outside world via a connector. In this embodiment, the connector pins 24 are integrated on PCBA 2. PCBA 2 is provided with a plurality of positioning holes 23, which facilitate the installation of PCBA 2.

[0035] like Figure 2 、 Figures 5 to 7 As shown, an open groove 11 is provided on the lamp housing 1, and the light guide plate 3 is installed in the open groove 11. A plurality of supporting protrusions 111 are provided at the bottom of the first open groove 11. In this embodiment, the plurality of supporting protrusions 111 are located at a position close to the groove wall at the bottom of the open groove 11, and are spaced apart along the length direction of the open groove 11, so that the supporting protrusions 111 are more stable and reliable when supporting the light guide plate 3. The supporting protrusions 111 jointly support the side surface of the light guide plate 3 close to the bottom of the first open groove 11. A plurality of snap-fitting protrusions 112 are provided on the groove wall of the first open groove 11, and each snap-fitting protrusion 112 corresponds one-to-one to a positioning protrusion 33 of the light guide plate 3, and each positioning protrusion 33 is snap-fitted with the corresponding snap-fitting protrusion 112. The supporting protrusions 111 and the snap-fitting protrusions 112 cooperate with each other to limit the light guide plate 3.

[0036] Furthermore, a second opening slot 12 is provided at the bottom of the first opening slot 11, and the PCBA 2 is mounted in the second opening slot 12. Several dispersed positioning pins 121 are provided at the bottom of the second opening slot 12, each positioning pin 121 corresponding to a positioning hole 23 of the PCBA 2, and each positioning pin 121 passes through a corresponding positioning hole 23.

[0037] Furthermore, the lamp housing 1 is provided with several mounting lugs 15, each with a mounting hole, to facilitate installation of the lamp housing 1. The lamp housing 1 is also provided with ventilation holes 13, within which a breathable membrane is installed to facilitate heat dissipation. In this embodiment, a connector housing 14 is integrated with the exterior of the lamp housing 1. This connector housing 14 is annular in structure, and the outer ends of the pins 24 pass through the pin holes in the lamp housing 1 and extend into the connector housing 14. The connector housing 14 is integrally formed with the lamp housing 1, eliminating the need for a separate connector, saving costs while ensuring a better seal.

[0038] like Figure 1 and Figure 2As shown, the luminous mask 4 is located on the side of the light guide plate 3 away from the bottom of the first opening groove 11, and is snapped into the notch of the first opening groove 11 of the lamp housing 1. The large surface of the luminous mask 4 close to the light guide plate 3 is its light-incoming surface, and the large surface of the light guide plate 3 facing the light-incoming surface of the luminous mask 4 is its light-emitting surface. The light-emitting surface of the light guide plate 3 faces the light-incoming surface of the luminous mask 4. A light-transmitting vehicle logo graphic 41 is provided on the luminous mask 4. In this embodiment, the luminous mask 4 is made of a milky white diffusion material, preferably a milky white PC diffusion plate. The luminous mask 4 and the vehicle logo graphic 41 are integrally formed. This ordinary single-color injection molding method is simple to mold, fast to mold, and has low mold and injection molding costs. In addition, the internal structure of the vehicle logo lamp cannot be seen through the luminous mask 4 when it is lit or not. The car logo graphic 41 is preferably protrudingly formed on the side surface of the light-emitting mask 4 away from the light guide plate 3, and a through hole adapted to the car logo graphic 41 is provided on the vehicle body B. The car logo graphic 41 passes through the corresponding through hole on the vehicle body B, making the three-dimensional effect of the car logo light better.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. An improved ultra-thin vehicle logo lamp, comprising a lamp housing (1), a light guide plate (3) and a light-emitting mask (4) both mounted on the lamp housing (1), wherein the light-emitting mask (4) is located on a side of the light guide plate (3) away from the lamp housing (1), and characterized in that: A light inlet portion (31) protruding away from the light-emitting mask (4) and having a "Y"-shaped cross section is provided in the middle of the light guide plate (3). The light inlet portion (31) extends along the width direction of the light guide plate (3), and the side edge thereof away from the light-emitting mask (4) is the light inlet surface of the light guide plate (3). A PCBA (2) integrating a plurality of LED lamp beads (21) is further provided in the lamp housing (1). The light-emitting surface of each LED lamp bead (21) on the PCBA (2) faces the light inlet surface of the light guide plate (3). The large surface of the light-emitting mask (4) close to the light guide plate (3) is its light inlet surface, and the large surface of the light guide plate (3) facing the light inlet surface of the light-emitting mask (4) is its light outlet surface. A light-transmitting vehicle logo pattern (41) is provided on the light-emitting mask (4).

2. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The light guide plate (3) comprises two luminous portions (34) arranged on both sides of the light inlet portion (31) in a relative manner. The two luminous portions (34) are both flat plate structures arranged in parallel on the inner side of the luminous mask (4). The large surfaces of the two luminous portions (34) close to the luminous mask (4) together constitute the light-emitting surface of the light guide plate (3). The light inlet portion (31) comprises a light inlet section (311) and two light guide sections (312) that together form a "Y"-shaped structure. The two light guide sections (312) extend from the side edge of the light inlet section (311) close to the luminous mask (4) to the side edge of the adjacent end of the corresponding luminous portion (34). The side edge of the light inlet section (311) away from the luminous mask (4) serves as the light inlet surface of the light guide plate (3).

3. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: Limiting portions (32) are respectively provided at both ends of the light-entering portion (31), and limiting protrusions (321) are provided on the outer edges of the limiting portions (32) on the side away from the light-emitting mask (4). The PCBA (2) is provided with limiting grooves (22) corresponding to the limiting protrusions (321) one by one, and each limiting protrusion (321) is embedded in the corresponding limiting groove (22), and the PCBA (2) is supported on the outer edge of the limiting portion (32) on the side away from the light-emitting mask (4).

4. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The luminous mask (4) is a milky white PC diffusion plate.

5. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The LED lamp beads (21) on the PCBA (2) are arranged linearly along the extension direction of the light-incoming surface of the light guide plate (3).

6. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The lamp housing (1) is provided with a first opening groove (11), and a plurality of supporting protrusions (111) are provided at the bottom of the first opening groove (11), and the supporting protrusions (111) jointly support a side surface of the light guide plate (3) close to the bottom of the first opening groove (11).

7. The improved ultra-thin vehicle logo light according to claim 6, characterized in that: A plurality of snap-fit ​​protrusions (112) are provided on the groove wall of the first opening groove (11); and positioning protrusions (33) corresponding one to one with each snap-fit ​​protrusion (112) are provided on a surface of the light guide plate (3) away from the groove bottom of the first opening groove (11); and each positioning protrusion (33) is snap-fitted with a corresponding snap-fit ​​protrusion (112).

8. The improved ultra-thin vehicle logo light according to claim 6, characterized in that: A second opening groove (12) is provided at the bottom of the first opening groove (11), and a plurality of dispersed positioning pins (121) are provided at the bottom of the second opening groove (12). Positioning holes (23) corresponding to the positioning pins (121) are provided on the PCBA (2), and the positioning pins (121) pass through the corresponding positioning holes (23).

9. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The lamp housing (1) is provided with an air hole (13), and an air permeable membrane is provided in the air hole (13).

10. The improved ultra-thin vehicle logo light according to claim 1, characterized in that: The invention also includes a connector, which includes a pin (24) integrated on the PCBA (2) and a connector housing (14) integrated on the outside of the lamp housing (1); the connector housing (14) is an annular structure, and the outer end of the pin (24) extends into the connector housing (14).

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