A projection laser module

Abstract

The present invention relates to the field of projection technology, in particular to a projection laser module, comprising a beam receiving mirror, two mounting plates symmetrically arranged on the left side of the beam receiving mirror, two connecting plates symmetrically installed on the right ends of the two mounting plates, a first light source module, a second light source module and a third light source module respectively arranged between the two mounting plates, and the first light source module, the second light source module and the third light source module are arranged in a triangular structure that is narrow on the left and wide on the right, a first heat sink is arranged at the front end of the first light source module, a second heat sink is installed at the rear end of the first light source module, and three V-shaped refraction mirrors are equidistantly installed between the two mounting plates. This design enables the first light source module, the second light source module and the third light source module in a triangular structure to perform combined light projection, which is beneficial to the miniaturized design of the projection equipment, and effectively reduces the probability of uneven energy density of the projection laser, effectively ensures the brightness of the projection laser, and effectively ensures the projection effect.

Description

Technical Field

[0001] The invention relates to a projection laser module, belonging to the technical field of projection. Background Art

[0002] Laser projection is to use laser beams to achieve vivid and clear projection operations. Most of the existing laser projection light sources use three groups of projection laser modules, and the three groups of projection laser modules emit red laser, blue laser and green laser respectively. The three groups of projection light source modules are generally arranged in parallel rectangles, and the three-color laser is received and combined by a beam receiving mirror to form a projection laser.

[0003] In order to ensure that the beam receiving mirror can effectively receive the different color lasers emitted by the three groups of projection laser modules, the required diameter of the beam receiving mirror will be larger than the length of the structure formed by the three groups of projection laser modules arranged in parallel, resulting in the projection laser module formed by the three groups of projection laser modules and the beam receiving mirror occupying a large amount of space inside the laser projection device, which is not conducive to the miniaturization design of the projection device;

[0004] Moreover, the three groups of projection laser modules arranged in parallel will generate a lot of heat when working. However, in order to reduce the space occupied by the projection laser modules, the distance between two adjacent projection laser modules will be smaller, and density will easily appear between two adjacent projection laser modules, thereby obstructing the corresponding projection laser modules and the lasers located at the edge position, resulting in a high probability of uneven energy density of the three-color lasers received on the beam receiving mirror, which will affect the brightness of the projection laser and the projection effect. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a projection laser module.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a projection laser module, including a beam receiving mirror, two mounting plates are symmetrically arranged on the left side of the beam receiving mirror, two connecting plates are symmetrically installed on the right ends of the two mounting plates, and the other ends of the four connecting plates are connected to the beam receiving mirror, a first light source module, a second light source module and a third light source module are respectively arranged between the two mounting plates, and the first light source module, the second light source module and the third light source module are arranged in a triangle structure with a narrow left and a wide right, the second light source module is located at the right front side of the first light source module, the third light source module is located at the right rear side of the first light source module, and the third light source module is located directly behind the second light source module;

[0007] A first heat sink is arranged at the front end of the first light source module, and the other end of the first heat sink is connected to the left end of the second light source module. A second heat sink is installed at the rear end of the first light source module, and the other end of the second heat sink is connected to the left end of the third light source module. The first heat sink and the second heat sink are both arranged between two mounting plates. Three V-shaped refractors are equidistantly installed between the two mounting plates, and the V-shaped refractors are arranged to be wide on the left and narrow on the right. The three V-shaped refractors are all located between the second light source module and the third light source module, and the V-shaped refractors are located on the left side of the light beam receiving mirror. The left ends of the rear arms of the three V-shaped refractors are all connected to the second heat sink, and the left ends of the front arms of the three V-shaped refractors are all connected to the first heat sink.

[0008] Further, the first heat sink includes a second heat sink, the second heat sink is mounted on the front end of the first light source module, and the second heat sink is arranged obliquely, the other end of the second heat sink is connected to the left end of the second light source module, and the left end of the second heat sink is recessed to the right to form a plurality of first heat dissipation holes, and the first heat dissipation holes penetrate the second heat sink;

[0009] A plurality of second heat sinks are equidistantly arranged at the left end of the second heat sink, the left ends of the front arms of the three V-shaped refractors are connected to the right end of the second heat sink, a first heat sink fan is arranged between the two mounting plates, and the first heat sink fan is located at the rear end of the first light source module, and a plurality of second heat sinks are installed on the right side of the first heat sink fan.

[0010] Further, the second heat sink includes a first heat sink, which is mounted on the rear end of the first light source module and is arranged in an inclined manner. The first heat sink is located directly behind the second heat sink, and the first heat sink and the second heat sink are arranged in a triangle structure with a narrow left and a wide right. The other end of the first heat sink is connected to the left end of the third light source module, and the left end of the first heat sink is recessed to the right to form a plurality of second heat dissipation holes, and the second heat dissipation holes penetrate the first heat sink;

[0011] A plurality of first heat sinks are equidistantly arranged at the left end of the first heat sink, the left ends of the rear arms of the three V-shaped refractors are connected to the right end of the first heat sink, a second heat sink fan is installed between the two mounting plates, and the second heat sink fan is located on the front end of the first light source module, and a plurality of first heat sinks are arranged directly on the right side of the second heat sink fan.

[0012] Furthermore, a first frame is arranged at the right end of the first light source module, and the first frame is located directly to the left of the V-shaped refractor, two large convex lenses are installed inside the first frame, and the two large convex lenses are both located directly to the right of the first light source module, the two large convex lenses are connected to each other toward the inner ends, and the two large convex lenses are arranged in a V-shaped structure with the left side narrow and the right side wide.

[0013] Furthermore, a second frame is arranged at the rear end of the second light source module, and the second frame is located directly in front of the V-shaped refractor, a first central convex lens is installed inside the second frame, first small convex lenses are arranged at both upper and lower ends of the first central convex lens, two of the first small convex lenses are installed in the second frame, and the two first small convex lenses are arranged in a V-shaped structure that is wide in the front and narrow in the back.

[0014] Furthermore, a third frame is installed at the front end of the third light source module, and the third frame is located directly behind the V-shaped refractor, a second central convex lens is arranged inside the third frame, second small convex lenses are installed at both upper and lower ends of the second central convex lens, two of the second small convex lenses are arranged in the third frame, and the two second small convex lenses are arranged in a V-shaped structure that is narrow in front and wide in the back.

[0015] Furthermore, the first light source module is composed of a blue laser diode, the second light source module is composed of a green laser diode, and the third light source module is composed of a red laser diode.

[0016] Beneficial effects of the present invention:

[0017] 1. The first light source module, the second light source module and the third light source module in a triangular structure are used to generate three-color lasers, and the three-color lasers are uniformly concentrated on the beam receiving mirror through three V-shaped refraction mirrors, so that the first light source module, the second light source module and the third light source module in a triangular structure can be used for combined light projection, which effectively reduces the occupied space of the required light source structure and is conducive to the miniaturized design of the projection equipment. The three-color lasers are parallel to each other, so that the positions of the light spots formed on the beam receiving mirror fill each other, effectively reducing the probability of uneven energy density of the projection laser, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect.

[0018] 2. The heat on the first heat dissipation plate is dissipated by the first heat dissipation fan, the first heat dissipation plate, the multiple second heat dissipation holes and the multiple first heat dissipation fins, and the heat on the second heat dissipation plate is dissipated by the second heat dissipation fan, the second heat dissipation plate, the multiple first heat dissipation holes and the multiple second heat dissipation fins, so as to achieve heat dissipation treatment at the position between the first light source module and the third light source module and at the position between the first light source module and the second light source module, effectively reduce the probability of heat collection between the first light source module and the third light source module and between the first light source module and the second light source module, effectively ensure the brightness of the projection laser, and effectively ensure the projection effect.

[0019] 3. The green laser emitted by the second light source module is converged by the first middle convex lens and the two first small convex lenses, and the red laser emitted by the third light source module is converged by the second middle convex lens and the two second small convex lenses, and the blue laser emitted by the first light source module is converged by the two large convex lenses, so that the lasers emitted by the first light source module, the second light source module and the third light source module are effectively irradiated onto the beam receiving mirror, effectively reducing the probability of interference between lasers of different colors, effectively reducing the probability of waste of lasers emitted by the first light source module, the second light source module and the third light source module, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect.

[0020] 4. The heat on the beam receiving mirror and the annular heat-conducting hollow plate is transmitted through multiple first heat-conducting rods and multiple second heat-conducting rods. At the same time, the heat on the first heat-conducting rod and the second heat-conducting rod is dissipated by the first heat-dissipating fan, the second heat-dissipating fan, the first heat-dissipating fin and the second heat-dissipating fin, so as to achieve timely heat dissipation treatment of the beam receiving mirror, effectively reduce the probability of softening of the glue at the installation position on the insulation ring, effectively reduce the probability of softened glue flowing to the beam receiving mirror and interfering with the operation of combining and projecting the three-color laser, effectively ensure the brightness of the projection laser, and effectively ensure the projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a projection laser module of the present invention;

[0023] Figure 2 A cross-sectional view of a projection laser module of the present invention;

[0024] Figure 3 for Figure 2 Sectional view along AA direction;

[0025] Figure 4 It is an assembly diagram of a first light source module, a second light source module, a V-shaped refractor and a third light source module in a projection laser module of the present invention;

[0026] Figure 5 A three-dimensional diagram of a second light source module in a projection laser module of the present invention;

[0027] Figure 6 A cross-sectional view of a second light source module in a projection laser module of the present invention;

[0028] Figure 7 It is a schematic diagram of another embodiment of a projection laser module of the present invention;

[0029] Figure 8 for Figure 7 sectional view of .

[0030] In the figure: 1. beam receiving mirror, 2. mounting plate, 3. first cooling fan, 4. first light source module, 5. second cooling fan, 6. second light source module, 7. V-shaped refractor, 8. third light source module, 11. thermal insulation ring, 12. annular heat-conducting hollow plate, 13. first heat dissipating fins, 14. second heat dissipating fins, 15. first heat-conducting rod, 16. second heat-conducting rod, 21. connecting plate, 41. large convex lens, 42. first frame, 43. first heat sink, 44. first heat sink, 45. second heat sink, 46. second heat sink, 61. second frame, 62. first small convex lens, 63. first middle convex lens, 81. third frame, 82. second small convex lens, 83. second middle convex lens. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1: Figure 1-Figure 4 As shown, a projection laser module is provided, including a beam receiving mirror 1, two connecting plates 21 are symmetrically installed at the right ends of two mounting plates 2 located on the left side of the beam receiving mirror 1, and the other ends of the four connecting plates 21 are connected to the beam receiving mirror 1, and the mounting plate 2 and the beam receiving mirror 1 are fastened and installed through the connecting plates 21;

[0033] A first light source module 4 composed of a blue laser diode, a second light source module 6 composed of a green laser diode, and a third light source module 8 composed of a red laser diode are all arranged between two mounting plates 2, and the first light source module 4, the second light source module 6 located at the right front side of the first light source module 4, and the third light source module 8 located at the right rear side of the first light source module 4 and directly behind the second light source module 6 are arranged in a triangle structure with a narrow left side and a wide right side, and a blue laser is emitted through the first light source module 4, a green laser is emitted through the second light source module 6, and a red laser is emitted through the third light source module 8;

[0034] A second heat sink 46 which is arranged obliquely and disposed between the two mounting plates 2 is disposed on the front end of the first light source module 4, and the other end of the second heat sink 46 is connected to the left end of the second light source module 6. The second heat sink 46 is used to provide a mounting carrier for components such as the second heat sink 45. The left end of the second heat sink 46 is recessed to the right to form a plurality of first heat dissipation holes penetrating the second heat sink 46. A plurality of second heat sinks 45 located on the right side of the first heat dissipation fan 3 are equidistantly disposed on the left end of the second heat sink 46. The plurality of second heat sinks 45 are used in conjunction with the plurality of first heat dissipation holes to achieve heat dissipation.

[0035] The first heat sink 44 which is arranged obliquely and disposed between the two mounting plates 2 and is located directly behind the second heat sink 46 and is arranged in a triangle structure with the second heat sink 46 being narrow on the left and wide on the right is installed on the rear end of the first light source module 4, and the other end of the first heat sink 44 is connected to the left end of the third light source module 8, and a mounting carrier is provided for the first heat sink 43 and other components through the first heat sink 44, and a plurality of second heat dissipation holes penetrating the first heat sink 44 are formed by recessing the left end surface of the first heat sink 44 to the right, and a plurality of first heat sinks 43 located directly to the right of the second heat dissipation fan 5 are equidistantly arranged on the left end of the first heat sink 44, and the plurality of second heat dissipation holes are used in conjunction with the plurality of first heat sinks 43 to achieve heat dissipation operation;

[0036] The first heat dissipation fan 3 located at the rear end of the first light source module 4 is arranged between the two mounting plates 2, and the first light source module 4 and the third light source module 8 are cooled by the first heat dissipation fan 3, and the second heat dissipation fan 5 located at the front end of the first light source module 4 is installed between the two mounting plates 2, and the first light source module 4 and the second light source module 6 are cooled by the second heat dissipation fan 5;

[0037] The left ends of the three rear arms are connected to the right end of the first heat sink 44, and the left end of the front arm is connected to the right end of the second heat sink 46. The V-shaped refractor 7, which is located between the second light source module 6 and the third light source module 8 and on the left side of the beam receiving mirror 1 and is arranged to be wide on the left and narrow on the right, is equidistantly installed between the two mounting plates 2. The lasers emitted by the second light source module 6 and the third light source module 8 are refracted by the V-shaped refractor 7.

[0038] When in use, firstly, the circuits of the first light source module 4, the second light source module 6 and the third light source module 8 are connected, so that the first light source module 4 emits a blue laser, the second light source module 6 emits a green laser and the third light source module 8 emits a red laser, the green laser emitted by the second light source module 6 irradiates the front end surfaces of the three V-shaped refractors 7, the three V-shaped refractors 7 refract the green laser and form a first reflected light, and then the first reflected light irradiates the beam receiving mirror 1;

[0039] The red laser light emitted by the third light source module 8 is irradiated onto the rear end surfaces of the three V-shaped refractors 7. The three V-shaped refractors 7 refract the red laser light and form a second reflected light. Then, the second reflected light is irradiated onto the beam receiving mirror 1. The blue laser light emitted by the first light source module 4 passes through the gaps between the three V-shaped refractors 7 and directly irradiates onto the beam receiving mirror 1.

[0040] The lasers emitted by the first light source module 4, the second light source module 6 and the third light source module 8 are uniformly concentrated on the beam receiving mirror 1, and the three laser beams are combined by the beam receiving mirror 1 to form a projection laser, and the projection laser is emitted for projection imaging operations, so that the first light source module 4, the second light source module 6 and the third light source module 8 in a triangular structure are used for combined light projection, which effectively reduces the occupied space of the required light source structure and is conducive to the miniaturized design of the projection equipment;

[0041] At this time, the first reflected light, the second reflected light and the blue laser are parallel to each other, so that the positions of the light spots formed on the beam receiving mirror 1 fill each other, effectively reducing the probability of uneven energy density of the projection laser, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect;

[0042] During the projection process, the heat generated by the first light source module 4 and the heat generated by the third light source module 8 are both conducted to the first heat sink 44, and the first heat sink fan 3 and the second heat sink fan 5 are started at the same time. The operation of the first heat sink fan 3 will form a first airflow behind the first light source module 4, and then the first airflow, the second heat sink holes on the first heat sink 44 and the plurality of first heat sinks 43 will dissipate the heat on the first heat sink 44, thereby achieving heat dissipation treatment at the position between the first light source module 4 and the third light source module 8, effectively reducing the probability of heat collection between the first light source module 4 and the third light source module 8, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect;

[0043] The heat generated by the first light source module 4 and the heat generated by the second light source module 6 are both conducted to the second heat sink 46. The second heat dissipation fan 5 will form a second airflow in front of the first light source module 4. Then the second airflow, the first heat dissipation holes on the second heat sink 46 and the plurality of second heat sinks 45 will dissipate the heat on the second heat sink 46, thereby achieving heat dissipation treatment at the position between the first light source module 4 and the second light source module 6, effectively reducing the probability of heat collection between the first light source module 4 and the second light source module 6, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect.

[0044] Embodiment 2: A triangular-structured assembly formed by a first light source module 4, a second light source module 6 and a third light source module 8 is used to provide a light source, and three V-shaped refractors 7 are used to refract the lasers generated by the second light source module 6 and the third light source module 8, so that the three-color lasers are irradiated onto the beam receiving mirror 1 in a mutually parallel state. However, the lasers generated by the second light source module 6 and the third light source module 8 will irradiate into two gaps formed by the three V-shaped refractors 7, resulting in a high probability of interference between lasers of different colors in the gaps, and a high probability of waste of the lasers emitted by the first light source module 4, the second light source module 6 and the third light source module 8, which will affect the brightness of the projection laser.

[0045] In order to solve the above problems, Figure 2-Figure 6 As shown, the first frame 42 located on the left side of the V-shaped refractor 7 is arranged on the right end of the first light source module 4, and the first frame 42 provides a mounting carrier for the large convex lens 41, and two large convex lenses 41 located on the right side of the first light source module 4, which are connected to each other at the inner ends and arranged in a V-shaped structure with a narrow left and a wide right, are both installed inside the first frame 42. The two large convex lenses 41 are used together to converge the blue laser light emitted by the first light source module 4 and form two parallel first laser beams;

[0046] The second frame 61 located in front of the V-shaped refractor 7 is arranged on the rear end of the second light source module 6. The second frame 61 provides a mounting carrier for the first convex lens 63 and other components, and the first convex lens 63 is installed inside the second frame 61. Then, two first small convex lenses 62 arranged in a V-shaped structure with a wide front and a narrow back and respectively arranged at the upper and lower ends of the first convex lens 63 are installed in the second frame 61. The first convex lens 63 and the two first small convex lenses 62 are used in conjunction with each other to converge the green laser light emitted by the second light source module 6 and form three parallel second laser beams.

[0047] The third frame 81 located directly behind the V-shaped refractor 7 is installed on the front end of the third light source module 8. The third frame 81 provides a mounting carrier for the second convex lens 83 and other components, and the second convex lens 83 is set inside the third frame 81. Then, two second small convex lenses 82 arranged in a V-shaped structure with a narrow front and a wide back and respectively installed at the upper and lower ends of the second convex lens 83 are both set in the third frame 81. The second convex lens 83 is used in conjunction with the two second small convex lenses 82 to converge the red laser emitted by the third light source module 8 and form three parallel third laser beams.

[0048] When in use, firstly connect the circuit of the first light source module 4, the circuit of the second light source module 6 and the circuit of the third light source module 8, so that the first light source module 4 emits a blue laser, the second light source module 6 emits a green laser and the third light source module 8 emits a red laser, the green laser emitted by the second light source module 6 is irradiated onto the first structure formed by the first middle convex lens 63 and the two first small convex lenses 62, the first structure converges the green laser emitted by the second light source module 6 and forms three parallel second laser beams, then the three second laser beams are irradiated onto the front end surfaces of the three V-shaped refractors 7 respectively, the three V-shaped refractors 7 respectively refract the three second laser beams and form three first reflected light beams, then the three first reflected light beams are all irradiated onto the beam receiving mirror 1;

[0049] The red laser light emitted by the third light source module 8 is irradiated onto the second structure formed by the second middle convex lens 83 and the two second small convex lenses 82. The second structure converges the red laser light emitted by the third light source module 8 and forms three third laser beams in parallel. Then, the three third laser beams are irradiated onto the rear end surfaces of the three V-shaped refractors 7 respectively. The three V-shaped refractors 7 refract the three third laser beams respectively and form three second reflected light beams. Then, the three second reflected light beams are all irradiated onto the beam receiving mirror 1.

[0050] The blue laser light emitted by the first light source module 4 will irradiate the third structure formed by the two large convex lenses 41, and the third structure will converge the blue laser light emitted by the first light source module 4 and form two parallel first laser beams, and then the two first laser beams will respectively pass through the two gaps formed by the three V-shaped refraction mirrors 7 and directly irradiate the beam receiving mirror 1;

[0051] The beam receiving mirror 1 unifies and combines the two first laser beams, the three second reflected light beams and the three first reflected light beams to form a projection laser, and emits the projection laser for projection imaging operations, so that the lasers emitted by the first light source module 4, the second light source module 6 and the third light source module 8 are effectively irradiated onto the beam receiving mirror 1, effectively reducing the probability of interference between lasers of different colors, effectively reducing the probability of waste of lasers emitted by the first light source module 4, the second light source module 6 and the third light source module 8, effectively ensuring the brightness of the projection laser, and effectively ensuring the projection effect.

[0052] Embodiment 3: A triangular-structured assembly formed by a first light source module 4, a second light source module 6 and a third light source module 8 is used to provide a light source, and three V-shaped refractors 7 are used to refract the lasers generated by the second light source module 6 and the third light source module 8, so that the three-color lasers are irradiated onto the beam receiving mirror 1 in a mutually parallel state. At the same time, a first convex lens 63, two first small convex lenses 62, a second convex lens 83, two second small convex lenses 82 and two large convex lenses 41 are used to converge the three-color lasers emitted by the first light source module 4, the second light source module 6 and the third light source module 8, respectively, so that the three-color lasers are effectively irradiated onto the beam receiving mirror 1. However, after the three-color lasers after the convergence process are irradiated onto the beam receiving mirror 1, rapid heat collection is likely to occur on the beam receiving mirror 1, and the beam receiving mirror 1 is generally fixedly installed in the projection device with glue, resulting in a high probability of softening the glue under the heat collection factor, causing the softened glue to flow to the beam receiving mirror 1, and a high probability of interference in the operation of combining and projecting the three-color lasers.

[0053] In order to solve the above problems, Figure 7 and Figure 8 As shown, the annular heat-conducting hollow plate 12 is installed on the annular outer end of the beam receiving mirror 1, and the other ends of the four connecting plates 21 are connected to the left end of the annular heat-conducting hollow plate 12. The annular heat-conducting hollow plate 12 provides a mounting carrier for the heat-insulating ring 11 and other components, and the heat-insulating ring 11 is set on the annular outer end of the annular heat-conducting hollow plate 12. Through the heat-insulating ring 11, the annular heat-conducting hollow plate 12 and the beam receiving mirror 1 are installed in the projection device;

[0054] The transverse parts of a plurality of first heat-conducting rods 15 extending into the annular heat-conducting hollow plate 12 and having an L-shaped cross section and the other end of which is connected to the left end of the first heat dissipation plate 44 and located on the rear outer side of the third light source module 8 are equidistantly arranged on the left end of the rear portion of the annular heat-conducting hollow plate 12. The plurality of first heat-conducting rods 15 are used in combination to connect the annular heat-conducting hollow plate 12 with the first heat dissipation plate 44. The transverse parts of a plurality of second heat-conducting rods 16 extending into the annular heat-conducting hollow plate 12 and having an L-shaped cross section and the other end of which is connected to the left end of the second heat dissipation plate 46 and located on the front outer side of the second light source module 6 are equidistantly arranged on the left end of the front portion of the annular heat-conducting hollow plate 12. The plurality of second heat-conducting rods 16 are used in combination to connect the annular heat-conducting hollow plate 12 with the second heat dissipation plate 46.

[0055] A plurality of first heat dissipating fins 13 located on the rear outer side of the third light source module 8 are equidistantly arranged at the outer ends of the plurality of first heat-conducting rods 15, and the plurality of first heat-dissipating fins 13 are used in combination to perform heat dissipation treatment on the first heat-conducting rods 15. A plurality of second heat-dissipating fins 14 located on the front outer side of the second light source module 6 are equidistantly arranged at the outer ends of the plurality of second heat-conducting rods 16, and the plurality of second heat-dissipating fins 14 are used in combination to perform heat dissipation treatment on the second heat-conducting rods 16.

[0056] When in use, firstly connect the circuit of the first light source module 4, the circuit of the second light source module 6 and the circuit of the third light source module 8, so that the first light source module 4 emits a blue laser, the second light source module 6 emits a green laser and the third light source module 8 emits a red laser, then the green laser emitted by the second light source module 6 is converged by the first structure formed by the first middle convex lens 63 and the two first small convex lenses 62 to form three parallel second laser beams, and the three V-shaped refractors 7 are used to refract the three second laser beams respectively to form three first reflected light beams, and then the three first reflected light beams are all irradiated onto the beam receiving mirror 1;

[0057] At the same time, the red laser light emitted by the third light source module 8 is converged by the second structure formed by the second middle convex lens 83 and the two second small convex lenses 82 to form three third laser beams in parallel, and the three third laser beams are refracted by the three V-shaped refractors 7 to form three second reflected light beams, and then the three second reflected light beams are irradiated onto the beam receiving mirror 1, and at the same time, the blue laser light emitted by the first light source module 4 is converged by the third structure formed by the two large convex lenses 41 to form two first laser beams in parallel, and then the two first laser beams pass through the two gaps formed by the three V-shaped refractors 7 and directly irradiate onto the beam receiving mirror 1;

[0058] The beam receiving mirror 1 uniformly concentrates and combines the two first laser beams, the three second reflected light beams and the three first reflected light beams to form a projection laser, and emits the projection laser for projection imaging. At this time, the heat generated on the beam receiving mirror 1 is transferred to the annular heat-conducting hollow plate 12, and then the multiple first heat-conducting rods 15 and the multiple second heat-conducting rods 16 transfer the heat on the annular heat-conducting hollow plate 12.

[0059] At the same time, the first heat dissipation fan 3, the second heat dissipation fan 5, the first heat dissipation fins 13 and the second heat dissipation fins 14 are used to dissipate the heat on the first heat-conducting rod 15 and the second heat-conducting rod 16, so as to achieve timely heat dissipation treatment of the light beam receiving mirror 1, effectively reduce the probability of softening of the glue at the installation position on the insulation ring 11, effectively reduce the probability of softened glue flowing to the light beam receiving mirror 1 and interfering with the operation of combining and projecting the three-color laser, effectively ensure the brightness of the projection laser, and effectively ensure the projection effect.

[0060] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A projection laser module, characterized in that: The invention comprises a beam receiving mirror (1), wherein two mounting plates (2) are symmetrically arranged on the left side of the beam receiving mirror (1), two connecting plates (21) are symmetrically arranged on the right ends of the two mounting plates (2), and the other ends of the four connecting plates (21) are connected to the beam receiving mirror (1), a first light source module (4), a second light source module (6) and a third light source module (8) are arranged between the two mounting plates (2), respectively, and the first light source module (4), the second light source module (6) and the third light source module (8) are arranged in a triangle structure with a narrow left side and a wide right side, the second light source module (6) is located on the right front side of the first light source module (4), the third light source module (8) is located on the right rear side of the first light source module (4), and the third light source module (8) is located directly behind the second light source module (6); A first heat sink is arranged at the front end of the first light source module (4), and the other end of the first heat sink is connected to the left end of the second light source module (6); a second heat sink is installed at the rear end of the first light source module (4), and the other end of the second heat sink is connected to the left end of the third light source module (8); the first heat sink and the second heat sink are both arranged between two mounting plates (2); three V-shaped refractors (7) are equidistantly installed between the two mounting plates (2), and the V-shaped refractors (7) are arranged to be wide on the left and narrow on the right; the three V-shaped refractors (7) are all located between the second light source module (6) and the third light source module (8), and the V-shaped refractors (7) are located on the left side of the light beam receiving mirror (1); the left ends of the rear arms of the three V-shaped refractors (7) are all connected to the second heat sink, and the left ends of the front arms of the three V-shaped refractors (7) are all connected to the first heat sink; A first frame (42) is arranged at the right end of the first light source module (4), and the first frame (42) is located directly to the left of the V-shaped refractor (7); two large convex lenses (41) are installed inside the first frame (42), and the two large convex lenses (41) are both located directly to the right of the first light source module (4); the two large convex lenses (41) are connected to each other at their inner ends, and the two large convex lenses (41) are arranged in a V-shaped structure with the left side narrower and the right side wider; A second frame (61) is arranged at the rear end of the second light source module (6), and the second frame (61) is located directly in front of the V-shaped refractor (7); a first central convex lens (63) is installed inside the second frame (61); first small convex lenses (62) are arranged at both upper and lower ends of the first central convex lens (63); two first small convex lenses (62) are installed in the second frame (61), and the two first small convex lenses (62) are arranged in a V-shaped structure with a width at the front and a narrowness at the rear; A third frame (81) is installed at the front end of the third light source module (8), and the third frame (81) is located directly behind the V-shaped refractor (7); a second convex lens (83) is arranged inside the third frame (81); second small convex lenses (82) are installed at both upper and lower ends of the second convex lens (83); two second small convex lenses (82) are arranged in the third frame (81), and the two second small convex lenses (82) are arranged in a V-shaped structure with a narrow front and a wide rear; The first light source module (4) is composed of a blue laser diode, the second light source module (6) is composed of a green laser diode, and the third light source module (8) is composed of a red laser diode. The first light source module (4) emits a blue laser, the second light source module (6) emits a green laser, and the third light source module (8) emits a red laser. The green laser emitted by the second light source module (6) is irradiated onto the front end surfaces of three V-shaped refractors (7). The three V-shaped refractors (7) refract the green laser to form a first reflected light. The first reflected light is irradiated onto the beam receiving mirror (1). The red laser light emitted by the third light source module (8) irradiates the rear end surfaces of the three V-shaped refractors (7), and the three V-shaped refractors (7) refract the red laser light to form second reflected light, and the second reflected light irradiates the light beam receiving mirror (1). The blue laser light emitted by the first light source module (4) passes through the gaps between the three V-shaped refractors (7) and directly irradiates the light beam receiving mirror (1).

2. The projection laser module according to claim 1, characterized in that: The first heat dissipation element comprises a second heat dissipation plate (46), the second heat dissipation plate (46) is mounted on the front end of the first light source module (4), and the second heat dissipation plate (46) is arranged in an inclined manner, the other end of the second heat dissipation plate (46) is connected to the left end of the second light source module (6), and the left end surface of the second heat dissipation plate (46) is recessed to the right to form a plurality of first heat dissipation holes, and the first heat dissipation holes penetrate the second heat dissipation plate (46); A plurality of second heat sinks (45) are equidistantly arranged at the left end of the second heat sink (46); the left ends of the front arms of the three V-shaped refractors (7) are connected to the right end of the second heat sink (46); a first heat sink fan (3) is arranged between the two mounting plates (2); the first heat sink fan (3) is located on the rear end of the first light source module (4); and a plurality of second heat sinks (45) are installed directly to the right of the first heat sink fan (3).

3. The projection laser module according to claim 2, characterized in that: The second heat sink comprises a first heat sink (44), the first heat sink (44) being mounted on the rear end of the first light source module (4), and the first heat sink (44) being arranged in an inclined manner, the first heat sink (44) being located directly behind the second heat sink (46), and the first heat sink (44) and the second heat sink (46) being arranged in a triangular structure with a narrow left side and a wide right side, the other end of the first heat sink (44) being connected to the left end of the third light source module (8), the left end surface of the first heat sink (44) being recessed to the right to form a plurality of second heat sink holes, and the second heat sink holes passing through the first heat sink (44); A plurality of first heat sinks (43) are arranged at equal intervals at the left end of the first heat sink (44); the left ends of the rear arms of the three V-shaped refractors (7) are connected to the right end of the first heat sink (44); a second heat sink fan (5) is installed between the two mounting plates (2); the second heat sink fan (5) is located on the front end of the first light source module (4); and a plurality of first heat sinks (43) are arranged directly to the right of the second heat sink fan (5).

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