Color car lamp projection module

Abstract

The color car lamp projection module comprises a PCBA board, a radiator, a color wheel assembly, a lens support assembly and a lens, a light source is arranged on the light emitting side of the PCBA board, the radiator is connected with the PCBA board, corresponding installation through holes are formed in the radiator and the PCBA board, one end of the color wheel assembly penetrates through the installation through holes to be fixed to the back face of the radiator, and the other end of the color wheel assembly penetrates through the lens support assembly to be fixed to the lens support assembly. The color wheel assembly comprises a color wheel, a color wheel motor, a motor support, a color wheel shaft and a color wheel support, one end of the color wheel shaft is connected with the color wheel, the other end of the color wheel shaft penetrates through the motor support to be connected with a motor shaft of the color wheel motor installed on the color wheel shaft, and the motor support is connected with the radiator through the color wheel support. The lens support assembly is arranged on the light emitting side of the PCBA board, the lens is arranged at one end of the lens support assembly, and light emitted by the light source completely covers a light inlet of the lens after passing through the light cone range boundary of the color wheel. Radiating fins and a fan are arranged on the back surface of the radiator; and a strong convection area of the fan covers the light source and the radiating surface of the color wheel assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and more specifically, to a color vehicle headlight projection module. Background Technology

[0002] Automotive headlights are generally used for illumination, such as high beam and low beam. The wave of automotive intelligence and the continuous iteration of underlying light source technology are driving headlights to evolve from simple illumination to intelligent and emotional lighting. Headlights with tens of thousands of pixels that can achieve intelligent lighting, interactive projection, and more design possibilities are becoming a new trend.

[0003] Existing technology CN111684355A has an optical route of RGB light source → collimating lens → total reflection mirror → DMD chip → projection lens, which has low light efficiency, multiple heat sources and complex system. Existing technology CN107678233B has a heat dissipation system that relies on complex airflow channels and external split heat dissipation components, which increases the structural volume and cost.

[0004] Therefore, a color vehicle headlight projection module with a short optical path, high optical efficiency, and high heat dissipation efficiency is needed. Utility Model Content

[0005] In view of this, in order to solve the above problems, this utility model proposes a color vehicle headlight projection module. Through a compact optical path design, the color wheel 31 passes through the heat sink 2 and the PCBA board 1, and the optical path is simplified to "light source 11 → color wheel 31 → lens 5". It abandons the collimating lens 5 and DMD chip commonly used in the prior art, reduces the number of optical components, and improves optical efficiency. The heat sink 2 and the fan 7 work together to centrally cool the light source 11 and the color wheel motor 32. The heat source is concentrated in the strong convection area of ​​the fan 7. The fan 7 can simultaneously dissipate heat for the color wheel motor 32 and the heat sink fins 21 of the heat sink 2.

[0006] A color vehicle headlight projection module includes a PCBA board 1, a heat sink 2, a color wheel assembly 3, a lens bracket assembly 4, and a lens 5. The module is characterized in that: a light source 11 is provided on the light-emitting side of the PCBA board 1; the heat sink 2 is connected to the PCBA board 1; corresponding mounting through holes 22 are provided on the heat sink 2 and the PCBA board 1; one end of the color wheel assembly 3 passes through the mounting through hole 22 and is fixed to the back of the heat sink 2, while the other end extends to the light-emitting side of the PCBA board 1; the color wheel assembly 3 includes a color wheel 31, a color wheel motor 32, a motor bracket 33, a color wheel shaft 34, and a color wheel support 35; one end of the color wheel shaft 34 is connected to the color wheel 31, and the other end passes through the motor bracket 33 and is connected to the motor shaft of the color wheel motor 32 mounted thereon. 2 drives the color wheel 31 to rotate at high speed. The motor bracket 33 is connected to the heat sink 2 through the color wheel bracket 35. The lens bracket assembly 4 is located on the light-emitting side of the PCBA board 1. The lens 5 is located at one end of the lens bracket assembly 4. The distance between the light source 11, the color wheel 31, and the lens 5 satisfies the following: the light emitted by the light source 11 completely covers the light inlet of the lens 5 after passing through the light cone range boundary of the color wheel 31. This allows the light emitted by the light source 11 to enter the lens 5 after being filtered by the color wheel 31 to form a color projection. The optical path is short and the optical efficiency is high. The design of the color wheel 31 passing through the heat sink 2 and the PCBA board 1 makes the module space structure compact and the assembly simple. The back of the heat sink 2 is provided with heat dissipation fins 21 and a fan 7. The strong convection area of ​​the fan 7 covers the heat dissipation surface of the light source 11 and the color wheel assembly 3.

[0007] In some embodiments, the color wheel 31 has a diameter of 55-65mm, and the center diameter of the color wheel motor 32 is 15-25mm.

[0008] Furthermore, the distance between the light source 11 and the color wheel 31 is 1-1.5mm, the distance between the color wheel 31 and the center of the first lens of the lens 5 is 6.5-7.5mm, and the distance from the first lens of the lens 5 to the light source 11 is 7.5-9.5mm, so that the light cone range of the light source 11 passing through the color wheel 31 can cover the light entrance of the lens 5.

[0009] Furthermore, the color wheel bracket 35 extends to multiple sides and is provided with bracket arms 36, which are connected to the radiator 2. The top of the color wheel bracket 35 is provided with an opening 37 for the other end of the color wheel shaft 34 to be accommodated. The outer ring of the opening 37 is provided with a connecting hole 38, through which the motor bracket 33 is connected to the color wheel bracket 35.

[0010] Furthermore, the back of the heat sink 2 is provided with heat dissipation fins 21, and a fan bracket 6 is externally connected to the back of the heat sink 2. A fan 7 is provided inside the lower part of the fan bracket 6. The mounting through hole 22 of the heat sink 2 corresponds to the position of the color wheel motor 32, so that the strong convection area of ​​the fan 7 covers the heat dissipation surface of the light source 11 and the color wheel motor 32. The heat source is concentrated in the strong convection area of ​​the fan 7. The fan 7 can dissipate heat for both the color wheel motor 32 and the heat dissipation fins 21 of the heat sink 2 at the same time, resulting in high system heat dissipation efficiency.

[0011] In some embodiments, the color wheel bracket 35 is integrated on the heat sink 2, and the color wheel 31 is directly mounted on the color wheel bracket 35 on the heat sink 2.

[0012] In some embodiments, the color wheel 31 is mounted in reverse on the lens support assembly 4.

[0013] Furthermore, the lens support assembly 4 includes a first support 41 and a second support 42. The second support 42 extends outward with at least two connecting brackets 421. The second support 42 is connected to the PCBA board 1 and the heat sink 2 through mounting holes provided in the connecting brackets 421. Both the first support 41 and the second support 42 are hollow annular structures. The first support 41, the second support 42 and the lens 5 are connected by internal and external threads. The distance between the lens 5 and the imaging light source 11 is adjusted by the threads to focus to the optimal imaging state.

[0014] Furthermore, both bracket 1 41 and bracket 2 42 are detachably connected to PCBA board 1 and heat sink 2.

[0015] Furthermore, the lens 5, color wheel 31, and light source 11 are also covered with a decorative frame 8, which serves as a protective cover to protect the lens 5, color wheel 31, and light source 11 and prevent foreign objects from entering when the color wheel 31 rotates at high speed.

[0016] Furthermore, the light source 11 is a surface light source with tens of thousands of pixels.

[0017] The beneficial effects of this utility model are as follows: This utility model proposes a color vehicle headlight projection module. Through a compact optical path design, the color wheel 31 passes through the heat sink 2 and the PCBA board 1, and the optical path is simplified to "light source 11 → color wheel 31 → lens 5". It abandons the collimating lens 5 and DMD chip commonly used in the prior art, reduces the number of optical components, and improves optical efficiency. The heat sink 2 and the fan 7 work together to centrally cool the light source 11 and the color wheel motor 32. The heat source is concentrated in the strong convection area of ​​the fan 7. The fan 7 can simultaneously dissipate heat for the color wheel motor 32 and the heat sink fins 21 of the heat sink 2. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the color vehicle headlight projection module of this utility model.

[0019] Figure 2 This is an exploded structural diagram of the color vehicle headlight projection module of this utility model.

[0020] Figure 3 This is a partial exploded view of the colored vehicle headlight projection module of this utility model.

[0021] Figure 4 This is a partial structural diagram of the color vehicle headlight projection module of this utility model.

[0022] Figure 5 This is a partial structural view of the back of the color vehicle headlight projection module of this utility model.

[0023] Explanation of main component symbols

[0024] PCBA board 1, light source 11, heat sink 2, heat sink fins 21, mounting through hole 22, color wheel assembly 3, color wheel 31, color wheel motor 32, motor bracket 33, color wheel shaft 34, color wheel bracket 35, bracket arm 36, opening 37, connecting hole 38, lens bracket assembly 4, bracket one 41, bracket two 42, connecting frame 421, lens 5, fan bracket 6, fan 7, decorative frame 8.

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation Example 1:

[0026] A color vehicle headlight projection module includes a PCBA board 1, a heat sink 2, a color wheel assembly 3, a lens bracket assembly 4, and a lens 5. The module is characterized in that: a light source 11 is provided on the light-emitting side of the PCBA board 1; the heat sink 2 is connected to the PCBA board 1; corresponding mounting through holes 22 are provided on the heat sink 2 and the PCBA board 1; one end of the color wheel assembly 3 passes through the mounting through hole 22 and is fixed to the back of the heat sink 2, while the other end extends to the light-emitting side of the PCBA board 1; the color wheel assembly 3 includes a color wheel 31, a color wheel motor 32, a motor bracket 33, a color wheel shaft 34, and a color wheel support 35; one end of the color wheel shaft 34 is connected to the color wheel 31, and the other end passes through the motor bracket 33 and is connected to the motor shaft of the color wheel motor 32 mounted thereon, thereby driving the color wheel motor 32 to emit light. The wheel 31 rotates at high speed. The motor bracket 33 is connected to the heat sink 2 through the color wheel bracket 35 (the description is unclear). The lens bracket assembly 4 is located on the light-emitting side of the PCBA board 1. The lens 5 is located at one end of the lens bracket assembly 4. The distance between the light source 11, the color wheel 31, and the lens 5 satisfies the following condition: the light emitted by the light source 11 completely covers the light inlet of the lens 5 after passing through the light cone range boundary of the color wheel 31. This allows the light emitted by the light source 11 to enter the lens 5 after being filtered by the color wheel 31, forming a color projection. The optical path is short and the optical efficiency is high. The design of the color wheel 31 passing through the heat sink 2 and the PCBA board 1 makes the module space structure compact and the assembly simple. Furthermore, the back of the heat sink 2 is provided with heat dissipation fins 21 and a fan 7. The strong convection area of ​​the fan 7 covers the heat dissipation surface of the light source 11 and the color wheel assembly 3.

[0027] Color wheel 31 has a diameter of 55-65mm, and color wheel motor 32 has a center diameter of 15-25mm.

[0028] The distance between the light source 11 and the color wheel 31 is 1-1.5mm, the distance between the color wheel 31 and the center of the first lens of the lens 5 is 6.5-7.5mm, and the distance from the first lens of the lens 5 to the light source 11 is 7.5-9.5mm, so that the light cone range of the light source 11 passing through the color wheel 31 can cover the light entrance of the lens 5.

[0029] The color wheel bracket 35 extends to multiple sides and is provided with bracket arms 36, which are connected to the radiator 2. The top of the color wheel bracket 35 is provided with an opening 37 for the other end of the color wheel shaft 34 to be positioned. The outer ring of the opening 37 is provided with a connecting hole 38, through which the motor bracket 33 is connected to the color wheel bracket 35.

[0030] The back of the heat sink 2 is provided with heat dissipation fins 21, and a fan bracket 6 is externally connected to the back of the heat sink 2. A fan 7 is provided inside the fan bracket 6. The mounting through hole 22 of the heat sink 2 corresponds to the position of the color wheel motor 32, so that the strong convection area of ​​the fan 7 covers the heat dissipation surface of the light source 11 and the color wheel motor 32. The heat source is concentrated in the strong convection area of ​​the fan 7. The fan 7 can dissipate heat for both the color wheel motor 32 and the heat dissipation fins 21 of the heat sink 2 at the same time, and the system has high heat dissipation efficiency.

[0031] The color wheel bracket 35 is integrated on the heat sink 2, and the color wheel 31 is directly mounted on the color wheel bracket 35 on the heat sink 2.

[0032] The color wheel 31 is mounted in reverse on the lens support assembly 4.

[0033] The lens support assembly 4 includes a first support 41 and a second support 42. The second support 42 extends outward with at least two connecting brackets 421. The second support 42 is connected to the PCBA board 1 and the heat sink 2 through mounting holes provided in the connecting brackets 421. Both the first support 41 and the second support 42 are hollow annular structures. The first support 41, the second support 42 and the lens 5 are connected by internal and external threads. The distance between the lens 5 and the imaging light source 11 is adjusted by the threads to focus to the optimal imaging state.

[0034] Both bracket 1 (41) and bracket 2 (42) are detachably connected to PCBA board 1 and heat sink 2.

[0035] The lens 5, color wheel 31, and light source 11 are also covered by a decorative frame 8, which serves as a protective cover to protect the lens 5, color wheel 31, and light source 11 and prevent foreign objects from entering when the color wheel 31 rotates at high speed.

[0036] The light source 11 is a surface light source with tens of thousands of pixels.

[0037] The beneficial effects of this utility model are as follows: This utility model proposes a color vehicle headlight projection module. Through a compact optical path design, the color wheel 31 passes through the heat sink 2 and the PCBA board 1, and the optical path is simplified to "light source 11 → color wheel 31 → lens 5". It abandons the collimating lens 5 and DMD chip commonly used in the prior art, reduces the number of optical components, and improves optical efficiency. The heat sink 2 and the fan 7 work together to centrally cool the light source 11 and the color wheel motor 32. The heat source is concentrated in the strong convection area of ​​the fan 7. The fan 7 can simultaneously dissipate heat for the color wheel motor 32 and the heat sink fins 21 of the heat sink 2.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A color vehicle headlight projection module, comprising a PCBA board (1), a heat sink (2), a color wheel assembly (3), a lens bracket assembly (4), and a lens (5), characterized in that: A light source (11) is provided on the light-emitting side of the PCBA board (1). The heat sink (2) is connected to the PCBA board (1). Corresponding mounting through holes (22) are provided on the heat sink (2) and the PCBA board (1). One end of the color wheel assembly (3) passes through the mounting through hole (22) and is fixed to the back of the heat sink (2). The other end extends to the light-emitting side of the PCBA board (1). The color wheel assembly (3) includes a color wheel (31), a color wheel motor (32), a motor bracket (33), a color wheel shaft (34), and a color wheel bracket (35). One end of the color wheel shaft (34) is connected to the color wheel (31), and the other end passes through the motor bracket (33) and is connected to the motor shaft of the color wheel motor (32) mounted thereon. The color wheel motor (32) drives the light wheel to move through the light-emitting side of the PCBA board (1). The moving color wheel (31) rotates at high speed, and the motor bracket (33) is connected to the heat sink (2) through the color wheel bracket (35); the lens bracket assembly (4) is located on the light-emitting side of the PCBA board (1), and the lens (5) is located at one end of the lens bracket assembly (4). The distance between the light source (11), the color wheel (31), and the lens (5) satisfies the following: the light emitted by the light source (11) completely covers the light inlet of the lens (5) after passing through the light cone range boundary of the color wheel (31), so that the light emitted by the light source (11) enters the lens (5) after being filtered by the color wheel (31) to form a color projection; and the back of the heat sink (2) is provided with heat dissipation fins (21) and a fan (7), and the strong convection area of ​​the fan (7) covers the heat dissipation surface of the light source (11) and the color wheel assembly (3).

2. The color vehicle headlight projection module as described in claim 1, characterized in that: The distance between the light source (11) and the color wheel (31) is 1-1.5mm, the distance between the color wheel (31) and the center of the first lens of the lens (5) is 6.5-7.5mm, and the distance from the first lens of the lens (5) to the light source (11) is 7.5-9.5mm, so that the light cone range of the light source (11) passing through the color wheel (31) can cover the light entrance of the lens (5).

3. The color vehicle headlight projection module as described in claim 1, characterized in that: The color wheel bracket (35) extends to multiple sides and is provided with bracket arms (36), which are connected to the radiator (2) through the bracket arms (36). The top of the color wheel bracket (35) is provided with an opening (37) for the other end of the color wheel shaft (34) to be positioned. The outer ring of the opening (37) is provided with a connecting hole (38), through which the motor bracket (33) is connected to the color wheel bracket (35).

4. The color vehicle headlight projection module as described in claim 1, characterized in that: The back of the radiator (2) is provided with heat dissipation fins (21), and a fan bracket (6) is connected to the back of the radiator (2). A fan (7) is provided inside the fan bracket (6). The mounting through hole (22) of the radiator (2) corresponds to the position of the color wheel motor (32), so that the strong convection area of ​​the fan (7) covers the heat dissipation surface of the light source (11) and the color wheel motor (32). The heat source is concentrated in the strong convection area of ​​the fan (7). The fan (7) can dissipate heat for both the color wheel motor (32) and the heat dissipation fins (21) of the radiator (2) at the same time.

5. The color vehicle headlight projection module as described in claim 1, characterized in that: The color wheel bracket (35) is integrated on the heat sink (2), and the color wheel (31) is directly mounted on the color wheel bracket (35) on the heat sink (2).

6. The color vehicle headlight projection module as described in claim 1, characterized in that: The color wheel (31) is mounted in reverse on the lens support assembly (4).

7. The color vehicle headlight projection module as described in claim 1, characterized in that: The lens support assembly (4) includes a first support (41) and a second support (42). The second support (42) extends outward with at least two connecting brackets (421). The second support (42) is connected to the PCBA board (1) and the heat sink (2) through mounting holes provided in the connecting brackets (421). The first support (41) and the second support (42) are both hollow ring structures. The first support (41), the second support (42), and the lens (5) are connected by internal and external threads, and the distance between the lens (5) and the imaging light source (11) is adjusted by the threads.

8. The color vehicle headlight projection module as described in claim 7, characterized in that: Both bracket one (41) and bracket two (42) are detachably connected to PCBA board (1) and heat sink (2).

9. The color vehicle headlight projection module as described in claim 1, characterized in that: The lens (5), color wheel (31), and light source (11) are also covered with a decorative frame (8).

10. The color vehicle headlight projection module as described in claim 1, characterized in that: The light source (11) is a surface light source with tens of thousands of pixels.

Images