Laser

Abstract

The present invention provides a laser, and relates to the technical field of lasers. The laser provided by the present invention comprises: a shell, a laser module, an air guide structure and a fan; the laser module comprises a box body, a box cover and a light source assembly, the box cover is connected to the box body and encloses a cavity, the light source assembly is installed in the cavity, and the box cover is light-transmissive; the fan is connected to the shell, and the fan generates an airflow for heat dissipation of the laser module; the shell comprises a bottom plate and a top plate arranged at intervals in the up and down directions, the laser module is installed on the bottom plate, the air guide structure is arranged on the top plate, and a guide slope is arranged on the air guide structure, and the guide slope is used to guide the airflow to the top surface of the box cover.

Description

Technical Field

[0001] The present invention relates to the technical field of lasers, and in particular to a laser. Background Art

[0002] When a semiconductor laser module generates laser, stray light will be generated. The stray light circulates in the laser module, which will increase the temperature inside the laser module and reduce its service life. Summary of the invention

[0003] The object of the present invention is to provide a laser to alleviate the technical problem of reduced lifespan caused by heat accumulation inside the existing laser.

[0004] In a first aspect, the present invention provides a laser, comprising: a housing, a laser module, an air guide structure and a fan;

[0005] The laser module comprises a box body, a box cover and a light source assembly, wherein the box cover is connected to the box body and encloses a cavity, the light source assembly is installed in the cavity, and the box cover is light-transmissive;

[0006] The fan is connected to the housing, and the fan generates airflow for dissipating heat from the laser module;

[0007] The shell includes a bottom plate and a top plate spaced apart in the up-down direction, the laser module is mounted on the bottom plate, the wind guide structure is arranged on the top plate, a guide slope is arranged on the wind guide structure, and the guide slope is used to guide the airflow to the top surface of the box cover.

[0008] Furthermore, the wind guide structure includes a plate body arranged obliquely relative to the vertical direction, and the top end of the plate body is connected to the top plate;

[0009] The plate body is inclined from top to bottom toward a side away from the fan to form the guide inclined surface.

[0010] Furthermore, the guiding inclined surface is a plane, a curved surface, a wave shape or a sawtooth shape.

[0011] Furthermore, there are multiple plates, and the multiple plates are arranged in an array;

[0012] Along the upstream direction to the downstream direction of the airflow, the length of the plate located in the upstream direction of the airflow is smaller than the length of the plate located in the downstream direction of the airflow; or, along the upstream direction to the downstream direction of the airflow, the plate located in the upstream direction of the airflow is staggered with the plate located in the downstream direction of the airflow.

[0013] Further, the wind guide structure includes a rotating shaft and blades, the top end of the rotating shaft is rotatably connected to the top plate, the blades are connected to the rotating shaft, the surface of the blades forms the guiding inclined surface, and the blades rotate under the action of the airflow;

[0014] Bristles are connected to the blades, the upper ends of the bristles are connected to the blades, and the lower ends of the bristles are in contact with the top surface of the box cover; the bristles are light-transmissive.

[0015] Furthermore, the blades are light-transmissive.

[0016] Furthermore, the number of the blades is at least two; the inclination angle setting of the blades includes: after receiving the stray light emitted by the laser module, the bottom surface of any one of the blades can reflect the stray light toward the top surface of another adjacent blade.

[0017] Furthermore, the material of the box body is a highly reflective material, or the inner wall of the box body is provided with a highly reflective film;

[0018] And / or, an anti-reflection film is provided on the bottom surface of the box cover.

[0019] Furthermore, the preparation material of the box cover includes an antistatic agent and / or a nano-active agent;

[0020] Alternatively, a dustproof film is provided on the top surface of the box cover;

[0021] Alternatively, a micro-nano structure with dust-proof function is etched on the top surface of the box cover.

[0022] Furthermore, the box cover has a protrusion protruding upward.

[0023] The present invention has at least the following advantages or beneficial effects:

[0024] The laser provided by the present invention comprises: a shell, a laser module, an air guide structure and a fan; the laser module comprises a box body, a box cover and a light source assembly, the box cover is connected to the box body and encloses a cavity, the light source assembly is installed in the cavity, and the box cover is light-transmissive; the fan is connected to the shell, and the fan generates an airflow for dissipating heat to the laser module; the shell comprises a bottom plate and a top plate arranged at intervals in the up and down directions, the laser module is installed on the bottom plate, the air guide structure is arranged on the top plate, and a guide slope is arranged on the air guide structure, and the guide slope is used to guide the airflow to the top surface of the box cover.

[0025] The stray light generated by the light source assembly during operation can be transmitted through the light-transmitting cover to avoid gathering in the box body. At the same time, the wind guide structure arranged above the cover can guide the wind blowing horizontally toward the laser module toward the top surface of the cover, so that the wind blows obliquely toward the top surface of the cover, thereby reducing the dust on the top surface of the cover, and the stray light in the box body can better pass through the cover and be transmitted to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional view of a laser module of a laser provided in Example 1 of the present invention;

[0028] Figure 2 A schematic diagram of the internal structure of a laser provided in Example 1 of the present invention;

[0029] Figure 3 A schematic diagram of the internal structure of a laser provided in Example 2 of the present invention;

[0030] Figure 4 This is a cross-sectional view of the laser module of the laser provided in Example 3 of the present invention.

[0031] Icon: 110-top plate;

[0032] 200-laser module; 210-box body; 220-box cover; 221-protrusion;

[0033] 310-plate body; 320-blades; 330-bristles;

[0034] 400-Fan. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Example 1

[0042] The laser provided by the present invention comprises: a housing, a laser module 200 , an air guide structure and a fan 400 .

[0043] like Figure 1 As shown, the laser module 200 includes a box body 210, a box cover 220 and a light source assembly (not shown in the figure). The top of the box body 210 is open, and the opening is roughly rectangular in shape, for installing the light source assembly. The box cover 220 is connected to the box body 210 to form a cavity, and the cavity is sealed. The light source assembly is installed in the cavity. The box cover 220 is light-transmissive. "Light-transmissive" means that the material does not absorb the laser light (the light in the wavelength band where the laser wavelength is located) emitted by the laser module 200, so that stray light (10+% of the light emitted by the laser module 200 is stray light) can pass through the "light-transmissive" material and reach the outside of the box cover 220 to reduce the heat load of the box body 210.

[0044] like Figure 2 As shown, the outer shell is disposed outside the laser module 200 , wherein the number of laser modules 200 in the outer shell may be multiple.

[0045] The fan 400 may be connected to the rear wall of the housing, and air holes are provided on the front wall of the housing, so that an airflow from the back to the front is formed inside the housing to dissipate heat for the laser module 200 .

[0046] The outer shell includes a bottom plate and a top plate 110 spaced apart in the up and down directions, the laser module 200 is mounted on the bottom plate, the air guide structure is arranged on the top plate 110, and a guide slope is arranged on the air guide structure. The guide slope is inclined relative to the top plate 110, and the guide slope is used to guide the airflow to the top surface of the box cover 220.

[0047] The stray light generated by the light source assembly during operation can be transmitted through the light-transmitting box cover 220 to avoid being gathered in the box body 210. At the same time, the wind guide structure arranged above the box cover 220 can guide the wind blowing horizontally toward the laser module 200 toward the top surface of the box cover 220, so that the wind blows obliquely toward the top surface of the box cover 220, thereby reducing the dust on the top of the box cover 220, and the stray light in the box body 210 can better pass through the box cover 220 and be transmitted to the outside.

[0048] The wind guide structure includes a plate body 310 arranged obliquely relative to the vertical direction, and the number of the plate body 310 can be one or more. The top end of the plate body 310 is connected to the top plate 110, and the surface of the plate body 310 facing the fan 400 forms a guide slope, wherein the guide slope can be a plane or a curved surface.

[0049] Specifically, in the present embodiment, the plate body 310 is arranged above the box cover 220, and the fan is located on the right side. The fan generates an airflow from left to right. From top to bottom, the plate body 310 is inclined toward the side away from the fan 400, that is, toward the left side, to form the guide slope. That is to say, in the wind direction generated by the fan 400, the distance between the bottom end of the plate body 310 and the fan 400 is greater than the distance between the top end of the plate body 310 and the fan 400. The surface of the plate body 310 facing the fan 400 forms an obtuse angle with the top plate 110, which can reduce the obstruction to the airflow and better guide the airflow toward the box cover 220.

[0050] Specifically, the shape of the guiding slope may also include a wave shape or a sawtooth shape.

[0051] like Figure 2As shown, in a first implementable scheme, there are multiple plate bodies 310, and the multiple plate bodies 310 are arranged in an array, along the upstream direction to the downstream direction of the airflow, and the length of the plate body 310 located in the upstream direction of the airflow is smaller than the length of the plate body 310 located in the downstream direction of the airflow, that is, the lower end of the previous row of plate bodies 310 is higher than the lower end of the next row of plate bodies 310, so as to avoid the wind in the downstream direction being blocked by the upstream plate body 310.

[0052] In another feasible solution, multiple rows of plates 310 may be arranged in parallel and spaced from the upstream direction to the downstream direction of the airflow, that is, from the back to the front. The plates 310 located in the upstream direction of the airflow are staggered with the plates 310 located in the downstream direction of the airflow, so that part of the wind blowing toward the first row of plates 310 will pass by this row of plates 310 and then blow toward the last row of plates 310, so as to avoid the wind in the downstream direction being blocked by the upstream plates 310.

[0053] The box body 210 is made of a highly reflective material, or the inner wall of the box body 210 is provided with a highly reflective film, such as a gold-plated film, and the bottom surface of the box cover 220 is provided with an anti-reflection film, so that more stray light can be reflected toward the box cover 220 and then transmitted out from the box cover 220.

[0054] The preparation material of the box cover 220 includes antistatic agents or nano-active agents, or includes both antistatic agents and nano-active agents, or a dust-proof film is provided on the top surface of the box cover 220, or a micro-nano structure with a dust-proof function is etched on the top surface of the box cover 220. By providing the above-mentioned dust-proof structure, dust adhesion is reduced. When the dust adhesion is less, dust accumulation on the top cover can be avoided, and the airflow guided by the air guide structure can blow away the dust more smoothly.

[0055] Example 2

[0056] The difference from Example 1 is that Figure 2 As shown, in this embodiment, the wind guide structure includes a rotating shaft and a blade 320. The top end of the rotating shaft is rotatably connected to the top plate 110, and the blade 320 is connected to the rotating shaft. The surface of the blade 320 forms a guiding inclined surface. The blade 320 rotates under the action of the airflow and guides the wind downward. The blade 320 is connected with a bristle 330. The upper end of the bristle 330 is connected to the blade 320, and the lower end of the bristle 330 contacts the top surface of the box cover 220. When rotating, the bristle 330 brushes away the dust on the surface of the box cover. The bristle 330 is light-transmissive to avoid blocking stray light.

[0057] The top plate 110 is provided with an axis hole, the top end of the rotating shaft is rotatably connected to the axis hole, and the blade 320 and the rotating shaft can be integrally formed. The blade 320 is an inclined flat plate structure, or a spiral structure, that is, the blade 320 includes a first end and a second end that are oppositely arranged, wherein the first end is connected to the circumferential side wall of the rotating shaft, and the length directions of the first end and the second end are not parallel.

[0058] The blades 320 are light-transmissive and facilitate the transmission of stray light.

[0059] like Figure 3 As shown, the number of blades 320 can be two, three or four, and the inclination angle setting of the blades 320 includes: after receiving the stray light emitted by the laser module 200, the bottom surface of any blade 320 can reflect the stray light to the top surface of another adjacent blade 320 ( Figure 3 The stray light can be transmitted from each blade 320 to the top of the blade 320 by reflection.

[0060] The bristles may be arranged only on a portion of the edge of the blade in a line shape.

[0061] Example 3

[0062] like Figure 4 As shown, the difference from Example 1 and Example 2 is that the box cover 220 has a protrusion 221 protruding upward, and the area below the protrusion 221 is the main generation area of ​​stray light. The protrusion 221 can be in the shape of a strip, and the strip-shaped protrusion 221 extends along the length direction of the box cover 220. The protrusion 221 and the box cover 220 are integrally formed. The stray light transmitted from the bottom to the top of the box cover 220 can enter the protrusion 221, and then repeatedly reflect between the left and right side walls of the protrusion 221 and then pass out, so as to prevent the stray light from being reflected back into the box body 210 by the outer wall of the box cover 220. In one embodiment, the protrusion 221 is correspondingly arranged at the top of the light-intensive area; wherein the light-intensive area includes but is not limited to the main light path and the chip.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser, characterized in that: include: A housing, a laser module (200), an air guide structure and a fan (400); The laser module (200) comprises a box body (210), a box cover (220) and a light source assembly, wherein the box cover (220) is connected to the box body (210) and encloses a cavity, the light source assembly is installed in the cavity, and the box cover (220) is light-transmissive; The fan (400) is connected to the housing, and the fan (400) generates an airflow for dissipating heat from the laser module (200); The housing comprises a bottom plate and a top plate (110) arranged at intervals in the up-down direction, the laser module (200) is mounted on the bottom plate, the air guide structure is arranged on the top plate (110), and a guide slope is provided on the air guide structure, the guide slope is used to guide the airflow towards the top surface of the box cover (220); The wind guide structure comprises a rotating shaft and a blade (320), the top end of the rotating shaft is rotatably connected to the top plate (110), the blade (320) is connected to the rotating shaft, the surface of the blade (320) forms the guiding inclined surface, and the blade (320) rotates under the action of the airflow; The number of the blades (320) is at least two; the inclination angle setting of the blades (320) includes: after receiving stray light emitted by the laser module (200), the bottom surface of any one of the blades (320) can reflect the stray light toward the top surface of another adjacent blade (320).

2. The laser according to claim 1, characterized in that The wind guide structure comprises a plate body (310) arranged obliquely relative to the vertical direction, and the top end of the plate body (310) is connected to the top plate (110); The plate body (310) is inclined from top to bottom toward a side away from the fan (400) to form the guiding inclined surface.

3. The laser according to claim 1, characterized in that The guiding inclined surface is in the shape of a plane, a curved surface, a wave or a sawtooth.

4. The laser according to claim 2, characterized in that There are a plurality of the plate bodies (310), and the plurality of the plate bodies (310) are arranged in an array; Along the upstream direction to the downstream direction of the airflow, the length of the plate body (310) located in the upstream direction of the airflow is shorter than the length of the plate body (310) located in the downstream direction of the airflow; or, along the upstream direction to the downstream direction of the airflow, the plate body (310) located in the upstream direction of the airflow and the plate body (310) located in the downstream direction of the airflow are staggered.

5. The laser according to claim 1, characterized in that The blade (320) is connected to a brush bristle (330); the upper end of the brush bristle (330) is connected to the blade (320), and the lower end of the brush bristle (330) is in contact with the top surface of the box cover (220); the brush bristle (330) is light-transmissive.

6. The laser according to claim 5, characterized in that The blades (320) are light-transmissive.

7. The laser according to claim 1, characterized in that The material of the box body (210) is a high-reflection material, or the inner wall of the box body (210) is provided with a high-reflection film; And / or, the bottom surface of the box cover (220) is provided with an anti-reflection film.

8. The laser according to claim 1, characterized in that The material used to prepare the box cover (220) includes an antistatic agent and / or a nano-active agent; Alternatively, a dustproof film is provided on the top surface of the box cover (220); Alternatively, a micro-nano structure having a dustproof function is etched on the top surface of the box cover (220).

9. The laser according to claim 1, characterized in that The box cover (220) is provided with a protrusion (221) protruding upwards.

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