CN111780054B

CN111780054B - Lighting device

Info

Publication number: CN111780054B
Application number: CN202010753040.9A
Authority: CN
Inventors: 杜微; 任毅; 崔成
Original assignee: Jiangsu Bodu Information Technology Co ltd
Current assignee: Nantong Boyi Information Technology Co.,Ltd.
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2022-06-21
Anticipated expiration: 2040-07-30
Also published as: CN111780054A

Abstract

The application discloses lighting device, this lighting device includes: the LED light source comprises a heat dissipation device, a near light LED light source, a far light LED light source and a lens module, wherein the heat dissipation device comprises a base, the base comprises an upper surface and a lower surface which are arranged in a back-to-back mode, a first side surface and a second side surface which are arranged in a back-to-back mode, and a groove is formed in the first side surface; the near-light LED light source is arranged on the upper surface, and the high-light LED light source is arranged on the inner wall of the groove close to the second side surface; the lens module is located the outgoing direction of distance light LED light source, and including the lens main part, the lens main part is held including relative first end and the second that sets up, and first end is provided with the blind hole, and the inner wall that the blind hole is close to the second end is first convex surface, and the surface that first end was kept away from to the second end is the second convex surface. In this way, this application can improve lighting device's heat dispersion through heat abstractor, adjusts the light path of distance light LED light source through the lens module.

Description

Lighting device

Technical Field

The application relates to the technical field of lighting equipment, in particular to a lighting device.

Background

In order to adapt to different applications, the lighting device may set a high beam mode and a low beam mode to change an illumination range of the lighting device, a lens module comprising a plurality of lenses is usually used to change a light path of the high beam light source in order to adjust the light path of the high beam light source in the high beam mode, but for the lighting device with a smaller installation space, the lens module comprising the plurality of lenses occupies too much space, which may result in the failure of installation.

Disclosure of Invention

The technical problem that this application mainly solved provides a lighting device, can improve lighting device's heat dispersion, adjusts the light path of distance light LED light source.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a lighting device including: the LED light source comprises a heat dissipation device, a low-beam LED light source, a high-beam LED light source and a lens module, wherein the heat dissipation device comprises a base, the base comprises an upper surface and a lower surface which are arranged in a back-to-back mode, and a first side surface and a second side surface which are arranged in a back-to-back mode, and a groove is formed in the first side surface; the low-beam LED light source is arranged on the upper surface, and the high-beam LED light source is arranged on the inner wall, close to the second side face, of the groove; the lens module is located on the emergent direction of distance light LED light source, including the lens main part, the lens main part is held including relative first end and the second that sets up, first end is provided with the blind hole, the blind hole is close to the inner wall of second end is first convex surface, the second end is kept away from the surface of first end is the second convex surface.

Wherein the blind hole, the first convex surface and the second convex surface are coaxially arranged.

Wherein the curvature of the first convex surface is twice or more than the curvature of the second convex surface.

Wherein the inner diameter of the blind hole is gradually increased toward the first convex surface side.

The outer side wall of the lens main body at the position with the largest inner diameter of the blind hole is provided with fixing pieces which are oppositely and symmetrically arranged, the fixing pieces are provided with fixing holes, and the fixing pieces form a lens support.

The lens support and the lens main body are integrally formed by injection molding of transparent materials, and the transparent materials comprise polycarbonate.

The lighting device also comprises a reflecting cup, the reflecting cup is covered above the near-beam LED light source, and an opening is formed in the position, corresponding to the high-beam LED light source, of the reflecting cup; the focus of the light reflecting cup and the focus of the first convex surface coincide with the focus of the second convex surface.

Wherein, heat abstractor still includes: the heat pipe is positioned on the upper surface of the base, and a heat pipe accommodating groove is formed in the position, corresponding to the heat pipe, of the upper surface of the base so as to accommodate the heat pipe; a plurality of heat dissipation fins are positioned on one side of the lower surface of the base; the heat radiation fan is positioned on one side of the lower surface of the base, which is deviated from the plurality of heat radiation fins, and the inner wall of one side of the lower surface of the groove corresponding to the base is provided with a plurality of through holes.

The heat pipe comprises a heat pipe middle area, a heat pipe bottom surface and a heat pipe bottom surface, wherein light source mounting grooves are respectively formed in two opposite sides of the heat pipe middle area, and the bottom of each light source mounting groove is higher than the upper surface of the heat pipe, or the bottom of each light source mounting groove is flush with the upper surface of the heat pipe; the two light source mounting grooves jointly accommodate the low-beam LED light source, so that the low-beam LED light source is mounted on the upper surface of the heat pipe in a bridging mode.

The illuminating device further comprises a shielding module, wherein the shielding module is positioned in the direction of the lens module far away from the high-beam LED light source and is used for shielding light rays emitted by the high-beam LED light source; when the lighting device works, the high-beam LED light source and the low-beam LED light source are simultaneously lightened; when the lighting device is switched to a near light mode, the shielding module shields light rays emitted by the high-beam LED light source, and when the lighting device is switched to the high-beam mode, the shielding module does not shield light rays emitted by the high-beam LED light source.

The beneficial effect of this application is: the application provides a lighting device, its lens module adjusts the light of high beam LED light source to make lighting device's light irradiation scope under the high beam mode wider, and the small and exquisite installation of being convenient for of lens module structure, especially be suitable for among the lighting device that installation space is less, and the heat of high beam LED light source and passing through light LED light source can be discharged rapidly by heat abstractor, improves lighting device's life.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic diagram of an exploded embodiment of the lighting device of the present application;

FIG. 2 is a schematic diagram of an exploded embodiment of the heat dissipation device of the present application;

FIG. 3 is a schematic side view of a lens module according to an embodiment of the present disclosure;

FIG. 4 is a schematic rear view of a lens module according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a main viewing angle of an embodiment of a lens module according to the present application;

FIG. 6 is a schematic diagram of an embodiment of a lens module according to the present application;

FIG. 7 is a schematic bottom view of the embodiment of the base shown in FIG. 2;

FIG. 8 is a schematic top view of the embodiment of the base shown in FIG. 2;

FIG. 9 is a schematic structural diagram of an embodiment of a shading module according to the present application;

FIG. 10 is a schematic structural diagram of another embodiment of a shading module according to the present application;

FIG. 11 is a schematic view of an exploded view of an embodiment of a shielding module according to the present application;

FIG. 12 is a schematic side view of another embodiment of a lighting device of the present application;

FIG. 13 is a schematic diagram of the optical path of an embodiment of the illumination device of the present application;

FIG. 14 is a side view schematic diagram of a lighting device according to another embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of an illumination device according to the present application after explosion, and fig. 2 is a schematic structural diagram of an embodiment of a heat dissipation device according to the present application after explosion. The lighting device 10a includes a heat sink 20, a low beam LED light source 300, a high beam LED light source 302, and a lens module 40. The heat dissipation device 20 includes a base 200, the base 200 includes an upper surface 2000 and a lower surface 2002 that are opposite to each other, and a first side 2004 and a second side 2006 that are opposite to each other, and the first side 2004 is provided with a groove 2008.

Specifically, the upper surface 2000 and the inner wall of the groove 2008 adjacent the second side 2006 are for mounting the low beam LED light source 300 and the high beam LED light source 302, respectively.

Specifically, the low beam LED light sources 300 are mounted to the upper surface 2000 of the base 200 and the high beam LED light sources 302 are mounted to the inner wall of the recess 2008 adjacent the second side 2006.

Further, please refer to fig. 3-5, fig. 3 is a schematic structural diagram of a side view of an embodiment of the lens module of the present application, fig. 4 is a schematic structural diagram of a rear view of an embodiment of the lens module of the present application, and fig. 5 is a schematic structural diagram of a main view of an embodiment of the lens module of the present application. The lens module 40 is located in the emitting direction of the high beam LED light source 302, the lens module 40 includes a lens body 42, the lens body 42 includes a first end 420 and a second end 422 that are oppositely disposed, the first end 420 is provided with a blind hole 402, an inner wall of the blind hole 402 close to the second end 422 is a first convex surface 404, and an outer surface of the second end 422 far away from the first end 420 is a second convex surface 406. The lens module 40 is different from a plurality of lenses, and is small in structure and particularly suitable for the lighting device 10a with a small installation space.

In a specific application scenario, please refer to fig. 6, fig. 6 is a schematic diagram illustrating a principle of an embodiment of the lens module according to the present application, when the lighting device 10a works, the high beam LED light source 302 is turned on, the blind hole 402 of the lens module 40 is covered on the high beam LED light source 302, the light emitting portion of the high beam LED light source 302 is located in the blind hole 402, the blind hole 402 converges the rectangular light spot of the high beam LED light source 302, so that the light reaching the first convex surface 404 is a circular light spot, and the light is refracted by the lens main body 42 and then emitted from the second end 422 of the lens main body 42. The lens module 40 emits the light from the high beam LED light source 302 in the forward direction in the high beam mode of the lighting device 10a, and the light irradiation range of the high beam LED light source 302 is widened.

Specifically, referring to fig. 6 again, one side of the first convex surface 404 may be understood as corresponding to a first lens (not labeled), one side of the second convex surface 406 may be understood as corresponding to a second lens (not labeled), the blind hole 402 is covered on the light source to collect the emergent light of the light source in the blind hole 402, the sidewall of the lens body 42 has a certain thickness and a certain radian, so that the light of the light source located in the blind hole 402 is refracted by the sidewall of the lens body 42, the sidewall of the lens body 42 is equivalent to a total reflection surface, the sidewall of the lens body 42 and the blind hole 402 converge the light of the light source, and a circular light spot is formed on the side of the blind hole 402 contacting the first lens, and the lens body 42 is suitable for light sources with different shapes, so that the light source presents a circular light spot when reaching the first convex surface 404. And then, the circular facula is reduced after the condensation action of the first lens, make the luminance of the facula strengthen, and then the second lens adjusts the light path of the facula, make the light of the light source shoot out with the approximate parallel light. Alternatively, in other applications, the second lens diffuses and magnifies the light spot, and the diffusion angle is related to the size of a condenser lens (not shown) disposed at the front end of the lens body 42, so that the light spot size formed by the light emitted from the second end 422 of the lens body 42 when reaching the condenser lens is approximately equal to or the same as the size of the condenser lens.

In another specific application scenario, when the lighting device 10a works, the high beam LED light source 302 and the low beam LED light source 300 are simultaneously turned on, the lens module 40 still has the function of adjusting the light path of the high beam LED light source 302, and meanwhile, the low beam LED light source 300 compensates the light of the high beam LED light source 302 to increase the illumination of the lighting device 10a at the near end position.

The lens module 40 provided by the embodiment has a small and exquisite structure, is convenient to mount, collects light rays of a light source through the blind hole 402, and enables the light rays in the blind hole 402 to be round light spots when reaching the first convex surface 404 of the lens main body 42, so that the lens module is suitable for light sources with different shapes, and emits the light rays at angles which are actually required after the light path of the light rays of the lens main body 42 is adjusted.

Further, the heat dissipation device 20 dissipates heat of the low beam LED light source 300 and the high beam LED light source 302 as soon as possible, reduces the attenuation rate of the light emitting efficiency of the low beam LED light source 300 and the high beam LED light source 302, so that the low beam LED light source 300 and the high beam LED light source 302 can work at higher power, improves the illumination intensity, reduces the probability of limiting the light emitting efficiency of the low beam LED light source 300 and the high beam LED light source 302 due to over-temperature, and prolongs the service life of the low beam LED light source 300 and the high beam LED light source 302.

In the lighting device 10a provided by this embodiment, the lens module 40 adjusts the light of the high beam LED light source 302, so that the light irradiation range of the lighting device 10a in the high beam mode is wider, and the lens module 40 has a small structure and is convenient to install, and is particularly suitable for the lighting device 10a with a small installation space, and the heat of the high beam LED light source 302 and the low beam LED light source 300 can be rapidly discharged by the heat dissipation device 20, thereby prolonging the service life of the lighting device 10 a.

Further, the blind hole 402, the first convex surface 404 and the second convex surface 406 are coaxially arranged. When the blind hole 402 is disposed coaxially with the first convex surface 404 and the second convex surface 406, it is beneficial to converge and integrate the light of the light source, and the light is emitted through the first convex surface 404 and the second convex surface 406 on the lens body 42, so that the light of the light source is not changed in light path due to the position deviation of the blind hole 402, the first convex surface 404 and the second convex surface 406.

Specifically, referring to fig. 3-6 in conjunction with the lens module 40, the curvatures of the first convex surface 404 and the second convex surface 406 of the lens module 40 are different. Because the light path adjustment is carried out to the facula that blind hole 402 collected, the polymerization of bigger amplitude is carried out with light to the first lens that first convex surface 404 corresponds, makes the facula present the circular shape facula that the radius is less, and the second lens that second convex surface 406 corresponds adjusts light, images the circular shape facula, and the change of curvature of first convex surface 404 and second convex surface 406 helps making the great change of amplitude appear in the light path when the light path adjustment.

Optionally, the curvature of the first convex surface 404 is twice or more the curvature of the second convex surface 406. Therefore, the first lens corresponding to the first convex surface 404 has a larger light polymerization effect than the second lens corresponding to the second convex surface 406, and the second lens mainly has a function of imaging the circular light spot formed by the first lens. The curvature of the first convex surface 404 is at least twice that of the second convex surface 406 to enhance the converging effect of the first lens on the light, so that the light can be concentrated and then emitted after being adjusted by the second lens.

Preferably, the focal point of the first convex surface 404 and the focal point of the second convex surface 406 coincide, so that the optical path adjustment of the light rays by the first lens and the second lens is in an optimal state. When the focal point of the first convex surface 404 coincides with the focal point of the second convex surface 406, the position of the light spot formed by the light beam passing through the first lens before entering the second lens reaches the optimal position, and the imaging effect of the light spot passing through the second lens reaches the optimal.

Further, the inner diameter of the blind hole 402 gradually increases toward the first convex surface 404, the cross-sectional view of the blind hole 402 parallel to the first convex surface 404 is circular, the diameter of the circular ring of the cross-sectional view of the blind hole 402 close to the first convex surface 404 gradually increases, and then the light of the light source arranged on the side of the blind hole 402 far away from the first convex surface 404 is changed into a circular light spot when reaching the first convex surface 404 after being continuously reflected by the blind hole 402, so as to be suitable for light sources with different shapes, such as a rectangle or even an abnormal shape.

Further, the outer side wall of the position with the largest inner diameter of the blind hole 402 is provided with opposite and symmetrically arranged fixing members, and the fixing member 408 is provided with a fixing hole 4080, wherein the fixing member 408 forms a lens holder (not labeled). The structure of the position with the largest inner diameter of the blind hole 402 is most stable, the fixing member 408 is arranged at the position to enable the lens module 40 to be more stable when being fixed with other devices, the fixing hole 4080 on the fixing member 408 reserves a fixing position for the lens module 40, and the fixing position of other devices to be fixed can be correspondingly provided with the fixing hole 4080 in practical application, or the fixing member 408 is provided with fixing holes 4080 with various common sizes to improve the applicability of the lens module 40.

Alternatively, the lens holder and the lens body 42 are integrally injection molded from a transparent material, and the transparent material includes polycarbonate. Among them, polycarbonate has advantages of high strength, high elastic coefficient, high impact strength, wide range of use temperature, high transparency and free dyeability. The transparent material can prevent the color of the light source from generating chromatic aberration, for example, the color of the LED light source or the xenon light source is not changed by the material color of the lens support or the lens main body 42, and the color of the light source is prevented from being distorted by the color of the lens main body 42 and the lens support.

In a specific application scenario, the lens module 40 may form a light source structure with at least one light source for separate sale, and at this time, the first end 420 of the lens body 42 covers the periphery of one of the light sources, and the covered light source is disposed opposite to the first convex surface 404.

Specifically, the first end 420 of the lens body 42 is tightly attached to the light source, the blind hole 402 is covered on the light source, and the light source is completely surrounded by the accommodating space formed by the blind hole 402, so that the collection efficiency of the light emitted by the light source reaches the highest.

Specifically, the axis of the blind hole 402, the axis of the first convex surface 404, and the axis of the second convex surface 406 coincide with the central light ray emitted by the light source. So that as much light as possible of the light emitted by the light source directly reaches the first convex surface 404 without passing through the side wall of the blind hole 402, thereby reducing the influence of the blind hole 402 on the light path of the light.

Further, the lighting device 10a further includes a reflective cup 304, the reflective cup 304 is disposed over the low-beam LED light source 300, and an opening (not shown) is disposed at a position of the reflective cup 304 corresponding to the high-beam LED light source 302, and a focal point of the reflective cup 304 and the first convex surface 404 coincides with a focal point of the second convex surface 406. The light emitted from the low beam LED light source 300 is reflected by the reflective cup 304 and emitted from the opening of the reflective cup 304 toward the near end, so that the light is emitted to the near end when the lighting device 10a is switched to the near light mode. Moreover, the focal points of the reflector cup 304 and the first convex surface 404 are coincident with the focal point of the second convex surface 406, so that the light of the high beam LED light source 302 and the light of the low beam LED light source 300 of the lighting device 10a can be emitted from the opening of the reflector cup 304, and then converged at the outer side of the reflector cup 304 to reach an optimal state, and the compensation effect of the light of the low beam LED light source 300 on the light in the high beam mode can be strongest.

In a specific application scenario, when the light source structure includes the high beam LED light source 302 and the low beam LED light source 300 as shown in fig. 1, the included angle α between the mounting surfaces of the high beam LED light source 302 and the low beam LED light source 300 is an obtuse angle. The first end 420 of the lens body 42 is positioned around the high beam LED light source 302. The outer side wall of the blind hole 402 has a side plane 4020 parallel to the mounting surface of the low-beam LED light source 300, so that the blind hole 402 does not block the light emitted by the low-beam LED light source 300.

Specifically, when the low beam LED light source 300 is disposed at a horizontal position, the central light beam emitted from the high beam LED light source 302 is emitted at an angle deviating from the horizontal plane, and the axis of the blind hole 402, the axis of the first convex surface 404, and the axis of the second convex surface 406 coincide with the central light beam emitted from the high beam LED light source 302, so that the light beam irradiation viewing angle of the high beam LED light source 302 is larger. Light that low beam LED light source 300 transmitted is through reflecting cup 304 reflection, by the light of reflecting cup 304 reflection, the direction from the top of lens module 40 to lens module 40 shines, then the side plane 4020 of the lateral wall of blind hole 402 has reduced the height of lens module 40, the sheltering from to the light that distance beam LED light source 302 transmitted has been reduced, when lens module 40 is transparent, the light of low beam LED light source 300 is when seeing through side plane 4020, its light path can not change, and then the loss of the light that low beam LED light source 300 transmitted has been reduced.

Further, referring to fig. 2 again, in combination with fig. 7 and 8, fig. 7 is a schematic structural diagram of a bottom view of an embodiment of the base in fig. 2, and fig. 8 is a schematic structural diagram of a top view of an embodiment of the base in fig. 2. The heat sink 20 further includes a heat pipe 202, heat dissipating fins 204, and a heat dissipating fan 206. The heat pipe 202 is located in the heat pipe container 2010. The heat dissipating fins 204 are disposed on the lower surface 2002 of the base 200, the heat dissipating fan 206 is disposed on one side of the lower surface 2002 and adjacent to the heat dissipating fins 204, and at least one hole 20020 penetrating through the lower surface 2002 is disposed at a position of the bottom wall of the groove 2008 corresponding to the heat dissipating fan 206. The position corresponding to the hole 20020 seen from the bottom view is the bottom wall of the groove 2008.

Specifically, when the low-beam LED light source 300 and the high-beam LED light source 302 are turned on, the heat of the light sources is rapidly transferred to the outside of the base 200 through the heat pipe 202, the heat dissipation fins 204 also receive the heat transferred from the low-beam LED light source 300 and the high-beam LED light source 302 and the heat pipe 202, and the heat dissipation fins 204 have spaced gaps therebetween, under the action of the heat dissipation fan 206, the airflow blown by the heat dissipation fan 206 flows upward from the hole 20020 on the lower surface 2002 of the base 200, acts on the low-beam LED light source 300 and the high-beam LED light source 302, is reflected by the upper surface 2000 of the base 200, and completely acts in the entire heat generation space from bottom to top, the heat is dissipated outward through the heat pipe 202 and the heat dissipation fins 204, and the airflow carrying the heat is rapidly discharged from the gaps between the heat dissipation fins 204, thereby achieving the effect of rapid heat dissipation.

In the heat dissipation device 20 provided in this embodiment, after the airflow passing through the heat dissipation fan 206 fully acts on the heat source, the heat is conducted out through the heat pipe 202 and the heat dissipation fins 204, and the airflow passing through the heat dissipation fan 206 is discharged from between the heat dissipation fins 204 through the heat dissipation fins 204, so that the heat inside the heat dissipation device 20 is discharged as soon as possible, thereby reducing the risk of spontaneous combustion of the heat source.

Specifically, the groove 2008 is connected to the upper surface 2000, and an included angle formed between the upper surface 2000 of the base 200 and an inner wall of the groove 2008 near the second side 2006 is an obtuse angle. That is, when the upper surface 2000 is the reference plane, the groove 2008 is not perpendicular to the upper surface 2000, when the upper surface 2000 is horizontally disposed, the inner wall of the groove 2008 close to the second side 2006 forms an obtuse angle with the upper surface 2000, and after passing through the lens module 40, the light of the high beam LED light source 302 disposed in the groove 2008 is emitted at an upward angle, so that the illumination range of the illumination apparatus 10a in the high beam mode is wider.

Further, the heat pipe container 2010 and the heat pipe 202 are U-shaped. The heat pipe 202 may have an axisymmetrical structure, and the heat pipe accommodating groove 2010 corresponds to the structure of the heat pipe 202. The working liquid in the heat pipe 202 is heated and evaporated to take away heat, and the U-shaped structure exposes the light source emitting heat except the position where the light exits, and surrounds the light source in other directions, so that the heat pipe 202 can achieve the best heat dissipation effect on the heat source. Of course, in other embodiments, the heat pipe 202 may have an asymmetric structure, and the installation position and the installation manner of the heat pipe 202 are determined to determine the shape of the heat pipe 202.

Specifically, a closed cavity (not labeled) is disposed in the heat pipe 202, the cavity is filled with a cooling liquid, and a capillary core layer (not labeled) is disposed on an inner wall of the cavity. The heat pipe 202 adopts a phase-change heat dissipation mode and a capillary structure transmission principle, the cooling liquid is absorbed in the capillary core layer on the inner wall of the cavity, when the light source emits light to generate heat, the part of the upper side wall of the cavity, which is close to the light source, is heated to raise the temperature, the cooling liquid absorbed on the capillary core layer at the part absorbs heat to be gasified, and the gasified cooling liquid overflows from the capillary core layer and flows to the other parts of the cavity. Meanwhile, as the heat dissipation fins 204 and the heat dissipation fan 206 generate air convection on the other side of the heat pipe 202, the temperature of the lower sidewall of the cavity is reduced, so that the gasified cooling liquid releases heat, condenses and liquefies at the lower sidewall of the cavity at a low temperature, the liquefied cooling liquid is absorbed into the capillary core layer of the lower sidewall of the cavity, and the cooling liquid around the lower sidewall of the cavity is promoted to flow to the upper sidewall of the cavity. Thereby completing a heat dissipation cooling cycle.

Optionally, the heat pipe 202 with temperature-changing property may be selected, so that the thermal resistance of the condensation section decreases with the increase of the heating amount and increases with the decrease of the heating amount, and thus, under the condition that the heating amount of the heat pipe 202 is greatly changed, the change of the steam temperature is extremely small, so as to improve the heat dissipation effect.

Further, light source mounting grooves 2012 are respectively disposed on two opposite sides of the middle area of the heat pipe 202, and the bottoms of the light source mounting grooves 2012 are higher than the upper surface 2000 of the heat pipe 202, or the bottoms of the light source mounting grooves 2012 are flush with the upper surface 2000 of the heat pipe 202, so that the low-beam LED light sources 300 are mounted on the upper surface 2000 of the heat pipe 202 in a bridging manner. The low-beam LED light source 300 is disposed above the middle line of the U-shaped heat pipe 202, a gap or contact is formed between the low-beam LED light source 300 and the heat pipe 202, and the low-beam LED light source 300 is used as a heat source and is located near the heat pipe 202 and at the center line of the U-shaped heat pipe 202, so that heat of the low-beam LED light source 300 is dissipated to the outside as soon as possible through the bent portion of the U-shaped heat pipe 202.

Further, the heat dissipation device 20 further includes a heat pipe fixing member 208, and the heat pipe fixing member 208 is located on the upper surface 2000 of the heat pipe 202 except for the middle region, and is used for fixing the position of the heat pipe 202. The heat pipe fixing members 208 correspond to two branches of the U-shaped heat pipe 202, two heat pipe fixing members 208 are respectively disposed on two sides of the boundary of the middle line of the heat pipe 202, and the heat pipe fixing members 208 do not affect the middle area of the heat pipe 202, and further do not affect the installation position of the light source and the emitting position of the light.

Further, the heat pipe fixing member 208 and the base 200 clamp the heat pipe 202 and are fixed to the base 200, so that the heat pipe 202 is fixed to the base 200, and the probability of deviation and even breakage of the heat pipe 202 caused by vibration is reduced, so as to improve the stability of the heat pipe 202, and further, the heat pipe fixing member is suitable for a bumpy environment.

Specifically, the heat pipe fixing member 208 includes a first portion 2080 having the same shape as the heat pipe accommodating groove 2010 at a corresponding position thereof, and a second portion 2082 extending horizontally from a side surface of the first portion 2080, and a fixing groove 2014 is provided at a position on the upper surface 2000 of the base 200 corresponding to the second portion 2082, wherein the first portion 2080 is located in the heat pipe accommodating groove 2010, and the second portion 2082 is located in the fixing groove 2014 and is fixedly connected to the fixing groove 2014.

Specifically, the first portion 2080 of the heat pipe fixing member 208 corresponds to the heat pipe accommodating groove 2010, covers the surface of the heat pipe 202 and is located in the heat pipe accommodating groove 2010, the first portion 2080 fills the heat pipe accommodating groove 2010 to make the surface of the heat pipe accommodating groove 2010 relatively flat, and the first portion 2080 can protect the surface of the heat pipe 202 to reduce the probability of the surface of the heat pipe 202 being pierced or cracked after collision. The second portion 2082 of the heat pipe fixing member 208 corresponds to the fixing groove 2014, is located in the fixing groove 2014 after being fixed, and is fixed to the base 200 by using a bolt through a through hole (not labeled) in the second portion 2082, so as to tightly clamp the heat pipe 202, so that the heat pipe 202 is stably connected, and the heat pipe 202 is convenient to replace and maintain, and is simultaneously suitable for application scenarios with higher requirements on structural stability, such as lighting devices of automobiles or locomotives.

Further, referring to fig. 7 and 8, a spacer (not labeled) is disposed between the light source mounting groove 2012 and the inner wall of the recess 2008 near the second side 2006, the heat dissipation fan 206 covers the spacer, and a plurality of noise reduction air outlets 2016 are disposed at positions of the base 200 corresponding to the spacer.

Specifically, the noise reduction air outlet 2016 penetrates through the bottom of the base 200, and is positioned between the low-beam LED light source 300 and the high-beam LED light source 302, so that the flowing distance of the air flow can be reduced, the outflow efficiency of the air flow is improved, and the noise caused by the air flow is reduced. When the airflow blown by the heat dissipation fan 206 acts on the low-beam LED light source 300 and the high-beam LED light source 302, the airflow carrying heat flows out from the noise reduction air outlet 2016 between the low-beam LED light source 300 and the high-beam LED light source 302 as soon as possible, which not only improves the heat dissipation efficiency, but also reduces the noise caused by the airflow flowing.

Further, at least a portion of the cooling fins 204 are V-shaped and extend from the second side 2006 to the adjacent third side 2020 or fourth side 2022, or from the third side 2020 to the opposite fourth side 2022. Specifically, the heat dissipation fins 204 near the first side 2004 are symmetrically arranged in a V-shaped configuration, and the heat dissipation fins 204 near the first side 2004 are located at the middle of the bottom of the base 200, which not only assists in heat dissipation, but also enhances the bottom structure, so that the overall structure of the base 200 is more reliable and stable. One end of the radiator fin 204 close to the second side 2006 is perpendicular to the second side 2006, and the other end extends to the adjacent third side 2020 or fourth side 2022, so that the radiator fin 204 is arranged on the side of the base 200. When the heat dissipation fins 204 are viewed from the bottom, the heat dissipation fins 204 are axially symmetric, and reinforcing structures (not labeled) are disposed on the heat dissipation fins 204 at intervals to improve the structural strength of the base 200 and the heat dissipation fins 204, so that the base 200 and the heat dissipation fins 204 are more stable and can be applied to an environment with a larger vibration amplitude.

Further, the height of the heat dissipation fins 204 near the third side 2020 and the fourth side 2022 is greater than the height of the heat dissipation fins 204 at other positions, so as to form a heat dissipation fan mounting groove 2024 on the heat dissipation fins 204, and the heat dissipation fan 206 is fixedly disposed in the heat dissipation fan mounting groove 2024. That is, the height of the heat dissipating fins 204 outside the position circled by the large dashed line in fig. 7 is greater than the height of the heat dissipating fins 204 inside the position, and the heat dissipating fan mounting groove 2024 provides a receiving space for the heat dissipating fan 206, so that the bottom of the base 200 is relatively flat after the heat dissipating fan 206 is mounted, so that the whole heat dissipating device 20 is more stable after being horizontally disposed.

Optionally, the base 200 and the heat dissipation fins 204 are integrally formed by die-casting. The base 200 and the heat dissipation fins 204 are integrally formed by die casting through opening corresponding dies. Compared with the welding or riveting mode, the integrally formed base 200 and the radiating fins 204 have better radiating effect and more stable structure, reduce the number of accessories and reduce errors caused by the process, and can also reduce the production cost when the demand of the radiating device 20 is larger.

Further, referring to fig. 1 and 2, the heat dissipation device 20 further includes a mounting plate 210, the mounting plate 210 is fixedly disposed on an outer edge of the first side 2004 of the base 200, an opening (not shown) is disposed in the middle of the mounting plate 210, and a plurality of mounting holes (not shown) are disposed on the mounting plate 210. The light emitted from the low beam LED light source 300 and the high beam LED light source 302 is transmitted through the opening, and the mounting holes on the mounting plate 210 provide mounting holes for other devices.

Specifically, the mounting holes at each top corner of the mounting plate 210 are reserved for fixing the whole lighting device 10a or the heat sink 20 to the vehicle body or the utility pole.

Further, the heat dissipation device 20 further includes an electrical mounting base 212, the electrical mounting base 212 is used for receiving a control circuit board (not labeled) and a connection terminal, and the electrical mounting base 212 is located on the second side 2006 of the base 200 and fixed to the lower surface 2002 of the base 200.

In a specific application scenario, when the lighting device 10a is used on a locomotive, the electrical mounting base 212 is disposed near a power source in the locomotive, and the control circuit board in the electrical mounting base 212 is powered from the locomotive body to supply power to the heat dissipation fan 206, the high beam LED light sources 302 and the low beam LED light sources 300.

In another specific application scenario, when the lighting device 10a is used for field lighting, the electrical mounting base 212 is disposed near a power source in a utility pole, and the control board in the electrical mounting base 212 has a voltage conversion circuit to convert ac power to dc power for the heat dissipation fan 206, the high beam LED light sources 302 and the low beam LED light sources 300.

Further, referring to fig. 1 again, the lighting device 10a further includes a shielding module 50, and the shielding module 50 is located in a direction away from the high beam LED light source 302 of the lens module 40 and is used for shielding the light emitted from the high beam LED light source 302. When the lighting device 10a is in operation, the high beam LED light source 302 and the low beam LED light source 300 are simultaneously turned on, when the lighting device 10a is switched to the low beam mode, the shielding module 50 shields the light emitted from the high beam LED light source 302, and when the lighting device 10a is switched to the high beam mode, the shielding module 50 does not shield the light emitted from the high beam LED light source 302.

Referring to fig. 9 and 10, fig. 9 is a schematic structural diagram of an embodiment of a shielding module of the present application, and fig. 10 is a schematic structural diagram of another embodiment of the shielding module of the present application. The shielding module 50 includes a fixing base 500, a shielding plate 502, a coil 504, a magnetic push rod 506, and an elastic member 508. The light shielding plate 502 is pivoted to the fixing base 500, the magnetic push rod 506 is inserted into the coil 504, the coil 504 is fixedly disposed on the fixing base 500, one end of the magnetic push rod 506 is located in the coil 504, the other end of the magnetic push rod 506 is located outside the coil 504 and is fixedly connected to the light shielding plate 502, the other end of the magnetic push rod 506 is provided with a first abutting portion 5060, and the elastic member 508 is located on the periphery of the exposed magnetic push rod 506 between the first abutting portion 5060 and the coil 504.

Specifically, when the coil 504 is energized, the magnetic field generated by the coil 504 drives the other end of the magnetic push rod 506 to be close to the coil 504, the magnetic push rod 506 drives the light blocking plate 502 to rotate, so that the light blocking plate 502 does not block the light emitted by the high beam LED light source 302, when the coil 504 is not energized, the other end of the magnetic push rod 506 is away from the coil 504 under the action of the elastic member 508, and the magnetic push rod 506 drives the light blocking plate 502 to rotate, so that the light blocking plate 502 returns to the original position to block the light emitted by the high beam LED light source 302.

Specifically, at least a portion of the light shielding plate 502 corresponds to an opening of the mounting plate 210, the magnetic field generated by the coil 504 drives the end of the magnetic pushing rod 506 provided with the first abutting portion 5060 to move close to the coil 504, so that the light shielding plate 502 is driven by the first abutting portion 5060 to move in a direction close to the coil 504, and further light emitted by the high beam LED light source 302 is not shielded, and when the end of the magnetic pushing rod 506 provided with the first abutting portion 5060 moves close to the coil 504, the elastic member 508 also buffers the movement of the magnetic pushing rod 506 to a certain extent. When the coil 504 is powered off, the magnetism disappears, the elastic member 508 pushes the magnetic push rod 506 after stretching, and then the light shielding plate 502 can be pushed back to the position for shielding the high beam LED light source 302, and other power devices are not needed to return the light shielding plate 502 to the original position, so that the whole shielding module 50 is simple in structure and convenient to use.

It can be understood that, when the low beam LED light source 300 and the high beam LED light source 302 are turned on simultaneously after the power is turned on, the light of the low beam LED light source 300 is reflected by the reflective cup 304 and emitted from the opening of the reflective cup 304 to the near end, and the shielding module 50 shields the high beam LED light source 302, the lighting device 10a is in the low beam mode. When the user selects to switch to the high beam state, the position of the shielding module 50 is adjusted, so that the shielding module 50 does not shield the light of the high beam LED light source 302, the light of the high beam LED light source 302 is collimated by the lens module 40 and then emitted, the lighting device 10a is switched to the high beam mode, the low beam LED light source 300 still maintains the working state, certain compensation is performed on the light near the lighting device 10a in the high beam mode, the illumination intensity near the irradiation range of the lighting device 10a in the high beam mode is improved, and when the lighting device 10a is in the high beam mode, the illumination distance is still 1200Lux at 1 km.

It can be understood that the high beam and low beam mode can be switched conveniently by the shielding module 50, the high beam and low beam mode switching can be realized without changing the working states of the low beam LED light source 300 and the high beam LED light source 302, and the times of opening and closing the low beam LED light source 300 and the high beam LED light source 302 can be reduced, so as to reduce the probability of damage to the low beam LED light source 300 and the high beam LED light source 302 caused by multiple times of turning on or turning off.

In the shielding module 50 provided in this embodiment, the magnetic field generated after the coil 504 is powered on drives the magnetic push rod 506 to move in a direction close to the coil 504, so that the light shielding plate 502 does not shield the light emitted by the light source, and the elastic member 508 pushes the magnetic push rod 506 back to the original position after the coil 504 is powered off, so that the light shielding plate 502 shields the light of the light source, and the whole shielding module 50 is simple and the position of the light shielding plate 502 can be switched quickly and conveniently.

Specifically, the elastic member 508 is a spring, the material of the elastic member 508 is simple, the cost is low, and the supply of parts is guaranteed when the shielding module 50 is manufactured.

Alternatively, the inner diameter of the spring gradually decreases in a direction approaching the first butting portion 5060. The first abutting portion 5060 is circular, and the inner diameter of the end of the spring close to the first abutting portion 5060 is smaller than or equal to the inner diameter of the first abutting portion 5060. The inner diameter of the spring increases gradually towards the end far away from the first abutting portion 5060, and abuts against the fixing base 500. The inner diameter of the end of the spring abutted against the fixing seat 500 is larger, and compared with a spring with the same inner diameter, the spring is not easy to shift and deform after being deformed for many times, so that the reliability of the shielding module 50 is improved.

Specifically, referring to fig. 11, fig. 11 is a schematic structural diagram of the shielding module according to an embodiment of the present disclosure after explosion, and the light shielding plate 502 includes a light shielding portion 5020, a connecting portion 5022 and a fixing portion 5024 connected in sequence. The fixing portion 5024 includes a first main body 50240 and first extending portions 50242 extending from two sides of the first main body 50240 toward the magnetic push rod 506. The shielding module 50 further includes a fixing shaft 510, two ends of the fixing shaft 510 are respectively fixedly connected to the first extending portion 50242, and a middle position thereof is fixedly connected to the other end of the magnetic push rod 506. The light shielding portion 5020 corresponds to the position of the high beam LED light source 302, and the connecting portion 5022 connects the fixing portion 5024 and the light shielding portion 5020. The light shielding portion 5020 of the light shielding plate 502 is separated from the fixing portion 5024, and is not an integral structure, so that the light shielding plate 502 is more easily molded. The first extending portion 50242 of the fixing portion 5024 of the light shielding plate 502 is fixedly connected to the fixing shaft 510, and the fixing shaft 510 can be driven by the magnetic push rod 506, so that the light shielding plate 502 pivotally connected to the fixing base 500 can rotate correspondingly along with the movement of the magnetic push rod 506.

Specifically, referring to fig. 9-11, when the magnetic push rod 506 moves toward a side close to the coil 504, that is, the magnetic push rod 506 moves along the direction of arrow a in fig. 9, the fixed shaft 510 also moves along the direction of arrow a along with the movement of the magnetic push rod 506, and then the light shielding plate 502 fixedly connected to the fixed shaft 510 is driven by the fixed shaft 510 to rotate around the point B on the fixing base 500, so that the light shielding part 5020 rotates to the position shown in fig. 10, and the whole movement process is fast and efficient.

Optionally, referring to fig. 11 again, the other end of the magnetic push rod 506 is further provided with a second abutting portion 5062, the second abutting portion 5062 is far away from the elastic member 508 relative to the first abutting portion 5060, a slot (not labeled) is formed between the first abutting portion 5060 and the second abutting portion 5062, and the fixing shaft 510 is clamped in the slot. The first abutting portion 5060 and the second abutting portion 5062 clamp the fixing shaft 510, so that maintenance is facilitated when the coil 504 or the magnetic push rod 506 fails, the light shielding plate 502 and the fixing shaft 510 do not need to be disassembled, and the coil 504 or the magnetic push rod 506 only needs to be replaced.

In a specific application scenario, the first abutting portion 5060 and/or the second abutting portion 5062 are/is a convex ring, the opposite surfaces of the convex ring-shaped first abutting portion 5060 and the convex ring-shaped second abutting portion 5062 are arc-shaped, and when the convex ring-shaped first abutting portion 5060 and the convex ring-shaped second abutting portion 5062 are assembled with the fixed shaft 510, the fixed shaft 510 is more easily clamped between the first abutting portion 5060 and the second abutting portion 5062, so that the assembling process is more convenient.

In another specific application scenario, the first abutting portion 5060 and/or the second abutting portion 5062 are circular rings, the opposite surfaces of the circular ring-shaped first abutting portion 5060 and the circular ring-shaped second abutting portion 5062 are flat, and when the first abutting portion 5060 and the second abutting portion 5062 which are flat in surface are clamped with the fixing shaft 510, the fixing shaft 510 can be more firmly connected with the first abutting portion 5060 and the second abutting portion 5062.

Further, referring to fig. 9 and 11, the fixing base 500 includes a case 5000 and a fixing plate 5002 fixedly connected to the case 5000, wherein the fixing plate 5002 vertically extends from one side of the case 5000. The box 5000 is used for accommodating the coil 504, a through hole 50000 is formed in the position, corresponding to the magnetic push rod 506, of the box 5000, and the magnetic push rod 506 is inserted into the coil 504 through the through hole 50000. The fixing portion 5024 is pivotally connected to the fixing plate 5002, the fixing plate 5002 is close to the high beam LED light source 302 relative to the light shielding plate 502, and a second groove 50020 is disposed at an upper edge of the fixing plate 5002, so that light of the high beam LED light source 302 can pass through the second groove 50020.

Further, referring to fig. 2 and fig. 11, the fixing plate 5002 is fixedly disposed on the mounting plate 210. The mounting plate 210 has a portion of the mounting holes reserved for fixing the fixing plate 5002 to the mounting plate 210, so that the fixing base 500 is connected to the mounting plate 210 through the fixing plate 5002, and the shielding module 50 is fixed to the mounting plate 210, so that the shielding module 50 can maintain the connection reliability even in an environment with a large vibration amplitude.

Further, when the coil 504 is not energized, the light blocking portion 5020 of the light blocking plate 502 at least partially corresponds to the second recess 50020 on the upper edge of the fixing plate 5002 to block the light of the high beam LED light source 302, and when the coil 504 is energized, the light blocking portion 5020 of the light blocking plate 502 exposes the position of the second recess 50020, and the light emitted by the high beam LED light source 302 is emitted through the second recess 50020.

Further, two second extending portions 50022 extending toward the magnetic push rod 506 side are disposed on the fixing plate 5002 near the magnetic push rod 506 side, and each second extending portion 50022 at least partially abuts against the first extending portion 50242 at the corresponding position. The shielding module 50 further includes a pivot shaft 512, two ends of which are respectively pivoted to the first extending portion 50242 and the second extending portion 50022.

Specifically, the first extending portion 50242 and the second extending portion 50022 are both provided with a through hole (not labeled), the pivot shaft 512 is inserted into the through holes of the first extending portion 50242 and the second extending portion 50022, when the fixed shaft 510 moves along with the magnetic push rod 506, the light shielding plate 502 is driven to move, and the position of the first extending portion 50242 of the fixed portion 5024 on the light shielding plate 502 rotates around the pivot shaft 512.

In a specific application scenario, the pivot shaft 512 includes a U-shaped second main body 5120 and a pivot portion 5122 extending from two ends of the second main body, and the pivot portion 5122 is disposed through the first extending portion 50242 and the second extending portion 50022 at corresponding positions thereof and attached to each other. The U-shaped second body 5120 is integrally disposed on the housing 5000 of the fixing base 500 to make the pivot shaft 512 more stable, and the pivot portion 5122 is disposed through the through holes of the first extending portion 50242 and the second extending portion 50022, so that the first extending portion 50242 of the fixing portion 5024 on the light shielding plate 502 rotates around the pivot portion 5122.

Preferably, the light shielding portion 5020 is arc-shaped, because the light shielding portion 5020 and the fixing portion 5024 are non-integrated structures, the light shielding portion 5020 is more easily molded, the light shielding portion 5020 can be molded into a corresponding arc-shaped structure corresponding to the shape of the reflective cup 304, the arc-shaped light shielding portion 5020 can shield most of light emitted by the high beam LED light source 302, and the arc-shaped edge can also transmit part of light to compensate the light of the low beam LED light source 300, so that the illuminance of the lighting device 10a in the low beam mode is improved.

Optionally, a reflective material is disposed on a side of the arc-shaped light shielding portion 5020 close to the high beam LED light source 302, so that light emitted from the high beam LED light source 302 is reflected by the light shielding portion 5020 to the reflective cup 304, and then reflected by the reflective cup 304 to compensate the light of the low beam LED light source 300 in the low beam mode, so as to further improve the illumination of the illumination apparatus 10a in the low beam mode.

In one application, please refer to fig. 12, fig. 12 is a schematic side view of another embodiment of the illumination device of the present application, in which the illumination device 10b includes a light source module 32 and a shielding module 50. In the structure of the shielding module 50, referring to the above embodiments, the light source assembly 32 includes a high beam LED light source 302 and a low beam LED light source 300 respectively installed on different planes. Specifically, when the lighting device 10b is in operation, the high beam LED light source 302 and the low beam LED light source 300 are simultaneously turned on, when the lighting device 10b is switched to the low beam mode, the shielding module 50 shields the light emitted from the high beam LED light source 302, and when the lighting device 10b is switched to the high beam mode, the shielding module 50 does not shield the light emitted from the high beam LED light source 302. The lighting device 10b has the structural features of the high beam LED light source 302, the low beam LED light source 300 and the shielding module 50, and the same portions are not described herein again.

When the lighting device 10b provided by this embodiment operates, the high beam LED light source 302 and the low beam LED light source 300 are simultaneously turned on, and the switching between the high beam mode and the low beam mode of the lighting device 10b is controlled by the position change of the shielding module 50, so that the switching is simple, the high beam LED light source 302 and the low beam LED light source 300 do not need to be turned on or off repeatedly, the probability of light source damage is reduced, and the low beam LED light source 300 can compensate the high beam in the high beam mode, thereby improving the illumination of the lighting device 10b in the high beam mode.

Specifically, the angle α between the mounting surfaces of the high beam LED light source and the low beam LED light source 300 is an obtuse angle. When the low beam LED light source 300 is disposed at a horizontal position, the central light beam emitted from the high beam LED light source 302 is emitted at an angle deviating from the horizontal plane, and the axis of the blind hole 402, the axis of the first convex surface 404, and the axis of the second convex surface 406 coincide with the central light beam emitted from the high beam LED light source 302, so that the light beam of the high beam LED light source 302 has a larger illumination angle.

Further, the lighting device 10b also includes a reflective cup 304, the reflective cup 304 is covered above the low-beam LED light source 300, and the reflective cup 304 is provided with an opening corresponding to the high-beam LED light source 302, and the light reflected by the reflective cup 304 from the low-beam LED light source 300 and the light emitted by the high-beam LED light source 302 are emitted from the opening. The light emitted from the low beam LED light source 300 is reflected by the reflective cup 304 and emitted from the opening of the reflective cup 304 toward the near end, so that the light is emitted to the near end when the lighting device 10b is switched to the near light mode.

Further, the area of the reflective cup 304 near the opening includes a first inclined surface (not labeled), a second inclined surface 3042 and a third inclined surface 3044, wherein one side edge of the third inclined surface 3044 forms an upper edge of the opening, and the included angles between the first inclined surface, the second inclined surface 3042 and the third inclined surface 3044 and the vertical direction decrease sequentially.

Specifically, the reflective cup 304 is integrally formed, the first inclined plane on the reflective cup 304 is already close to the opening of the reflective cup 304, the first inclined plane does not reflect light of the low-beam LED light source 300, the contact position of the first inclined plane and the second inclined plane 3042 forms a reinforcing structure to improve the structural stability of the reflective cup 304, the included angles between the first inclined plane, the second inclined plane 3042 and the third inclined plane 3044 and the vertical direction are gradually decreased, and the connection between each two inclined planes can reinforce the structure of the reflective cup 304.

In a specific application scenario, one side edge of the third inclined surface 3044 forms an upper edge of the opening, and the third inclined surface 3044 is rectangular, so that the opening of the reflective cup 304 is a straight line, when the lighting device 10b is in a high beam mode or a low beam mode, and the light emitted by the lighting device 10b strikes on any plane, the upper surface of the light irradiation range is a straight line, so as to be suitable for rail vehicles such as high-speed rail vehicles, and the viewing angle of the rail vehicles is mainly concentrated in the front. Therefore, it is more preferable for the rail vehicle to set the upper surface of the light irradiation range to be a straight line.

In another specific application scenario, one side edge of the third inclined surface 3044 forms an upper edge of the opening, and the third inclined surface 3044 is arc-shaped, so that the opening of the reflective cup 304 is an arc line, when the lighting device 10b is in a high beam mode or a low beam mode, and the light emitted by the lighting device 10b strikes on any plane, the upper surface of the light irradiation range is upwardly divergent, so as to be suitable for road vehicles such as automobiles. Therefore, it is a more preferable manner for the road vehicle to set the upper surface of the light irradiation range to be an arc.

Further, referring to fig. 11, the light shielding plate 502 includes a light shielding portion 5020, a connecting portion 5022 and a fixing portion 5024 connected in sequence, the fixing portion 5024 is pivoted to the fixing base 500, an upper edge of the light shielding portion 5020 far from the fixing portion 5024 is on the same plane, and an upper edge of the opening of the reflective cup 304 is on the same plane.

Specifically, when light is emitted from the inside of the opening of the reflector 304 to the outside, the projection of the upper edge of the light shielding portion 5020 and the lower edge of the opening of the reflector 304 form a straight line, and further, the light emitted from the opening of the reflector 304 is emitted onto a wall surface to form an approximately rectangular illumination range, and the upper and lower edges of the illumination range correspond to the upper edge of the light shielding portion 5020 and the lower edge of the opening of the reflector 304 and form a straight line. The application mode is preferably suitable for rail vehicles such as motor vehicles and high-speed rails.

Optionally, the lateral dimension of the light shielding portion 5020 is smaller than the lateral dimension of the lower edge of the opening of the reflector cup 304. The light shielding portion 5020 can shield most of the light emitted by the high beam LED light source 302, when the lighting device 10b is in the low beam mode, the lateral dimension of the light shielding portion 5020 is smaller than the lateral dimension of the lower edge of the opening of the reflective cup 304, and part of the light of the high beam LED light source 302 passes through the two sides of the light shielding portion 5020 to compensate the light of the low beam LED light source 300, so as to improve the illuminance of the lighting device 10b in the low beam mode.

Further, referring to fig. 12 again, the lighting device 10b further includes a lens module 40 and a main lens 306.

Specifically, referring to fig. 13, fig. 13 is a schematic optical path diagram of an embodiment of the illumination device of the present application, the lens module 40 is located in an emitting direction of the high beam LED light source 302 and is close to the high beam LED light source 302 relative to the shielding module 50, the main lens 306 is located on a side of the shielding module 50 away from the lens module 40, and light emitted from the low beam LED light source 300 and the high beam LED light source 302 is emitted through the main lens 306.

Specifically, fig. 13 only schematically shows the change of the light path of the light from the high beam LED light source 302 to the main lens 306 after passing through the lens module 40, please refer to fig. 1-6, wherein one side of the main lens 306 close to the lens module 40 is a light receiving surface 3060, one side of the main lens 306 away from the lens module 40 is a light exiting surface 3062, the blind hole 402 is disposed on the high beam LED light source 302, and further the light from the high beam LED light source 302 is collected in the blind hole 402, after the light path of the light from the high beam LED light source 302 is adjusted by the lens main body 42, the light from the high beam LED light source 302 completely irradiates the light receiving surface 3060 of the main lens 306, that is, the light exiting from the lens main body 42 is within the light receiving surface 3060 of the main lens 306 when reaching the main lens 306, and the main lens 306 further focuses the incident light to adjust the light path of the incident light.

Further, after the light emitted by the low-beam LED light source 300 is reflected by the reflection cup 304, the width between the edges of the light reflected from the reflection cup 304 is less than or equal to the width of the light receiving surface 3060 of the main lens 306, that is, the edge of the light emitted from the reflection cup 304 is located within the light receiving surface 3060 of the main lens 306 when reaching the main lens 306, and the main lens 306 condenses the incident light to adjust the light path of the incident light.

Preferably, the first lens corresponding to the first convex surface 404, the second lens corresponding to the second convex surface 406, the main lens 306 and the reflective cup 304 are confocal, so that when the light of the high beam LED light source 302 passes through the first lens and the second lens and reaches the main lens 306, and the light of the low beam LED light source 300 passes through the reflective cup 304 and reaches the main lens 306, all the light incident on the side of the light receiving surface 3060 of the main lens 306 irradiates on the light receiving surface 3060.

In a specific application scenario, in the high beam mode, the main lens 306 collects the light emitted from the high beam LED light source through the lens module 40, and adjusts the light to be approximately parallel to be emitted from the light exit surface 3062 of the main lens 306, so as to be suitable for the vehicle lighting system.

In another specific application scenario, in the high beam mode, the main lens 306 collects the light emitted from the high beam LED light source through the lens module 40, and collects the light into a point on one side of the light exit surface 3062 of the main lens 306, and then scatters the light, so as to be suitable for a square illumination system.

Optionally, a fly-eye structure (not labeled) is disposed on a side of the main lens 306 close to the lens module 40, and a side of the main lens 306 away from the lens module 40 is a convex surface. The fly-eye structure on the side of the light receiving surface 3060 of the main lens 306 is used to more effectively adjust the optical path of the incident light on the side of the light receiving surface 3060. The light exit surface 3062 is convex, and has a curvature determined by actual requirements, so as to collect the light, so that the light of the near-beam LED light source 300 and the high-beam LED light source 302 can be emitted at an angle according to actual requirements.

In summary, referring to fig. 14, fig. 14 is a schematic structural diagram of a side view of another embodiment of the illumination device of the present application, and referring to fig. 1, the illumination device 10a shown in fig. 14 can be formed by integrating the illumination device 10b and the heat dissipation device 20, and the illumination device 10a has a good heat dissipation effect and is easy to switch between a high beam mode and a low beam mode.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. An illumination device, comprising:

the heat dissipation device comprises a base, wherein the base comprises an upper surface and a lower surface which are arranged in a back-to-back manner, and a first side surface and a second side surface which are arranged in a back-to-back manner, and the first side surface is provided with a groove;

a low beam LED light source mounted to the upper surface and a high beam LED light source mounted to an inner wall of the recess proximate the second side;

the lens module is positioned in the emergent direction of the high-beam LED light source and comprises a lens main body, the lens main body comprises a first end and a second end which are oppositely arranged, the first end is provided with a blind hole, the inner wall of the blind hole close to the second end is a first convex surface, and the outer surface of the second end far away from the first end is a second convex surface;

the curvature of the first convex surface is two times or more than that of the second convex surface, the inner diameter of the blind hole is gradually increased towards one side of the first convex surface, and the focus of the first convex surface is superposed with the focus of the second convex surface;

the convex direction of first convex surface orientation first end, the convex direction of second convex surface deviates from first end.

2. The lighting device of claim 1,

the blind hole, the first convex surface and the second convex surface are coaxially arranged.

3. The lighting device of claim 1,

the outer side wall of the lens main body at the position with the largest inner diameter of the blind hole is provided with fixing pieces which are oppositely and symmetrically arranged, and the fixing pieces are provided with fixing holes, wherein the fixing pieces form a lens support.

4. The lighting device of claim 3,

the lens support the lens main body is formed by integral injection molding of transparent materials, and the transparent materials comprise polycarbonate.

5. A lighting device as recited in claim 1, further comprising:

the reflecting cup is covered above the near-beam LED light source, and an opening is formed in the position, corresponding to the high-beam LED light source, of the reflecting cup;

the focus of the reflecting cup and the focus of the first convex surface coincide with the focus of the second convex surface.

6. A lighting device as recited in claim 1, wherein said heat sink further comprises:

the heat pipe is positioned on the upper surface of the base, and a heat pipe accommodating groove is formed in the position, corresponding to the heat pipe, of the upper surface of the base so as to accommodate the heat pipe;

a plurality of heat dissipation fins located on one side of the lower surface of the base;

and the heat radiation fan is positioned on one side of the lower surface of the base, which deviates from the plurality of heat radiation fins, and the inner wall of one side of the lower surface of the groove corresponding to the base is provided with a plurality of through holes.

7. The lighting device of claim 6,

light source mounting grooves are respectively formed in two opposite sides of the middle area of the heat pipe, and the bottom of each light source mounting groove is higher than the upper surface of the heat pipe, or the bottom of each light source mounting groove is flush with the upper surface of the heat pipe; the two light source mounting grooves jointly accommodate the low-beam LED light sources, so that the low-beam LED light sources are mounted on the upper surface of the heat pipe in a bridging mode.

8. A lighting device as recited in claim 1, further comprising:

the shielding module is positioned in the direction of the lens module far away from the high-beam LED light source and is used for shielding light rays emitted by the high-beam LED light source;

when the lighting device works, the high-beam LED light source and the low-beam LED light source are simultaneously lightened; when the lighting device is switched to a near light mode, the shielding module shields light rays emitted by the high-beam LED light source, and when the lighting device is switched to the high-beam mode, the shielding module does not shield light rays emitted by the high-beam LED light source.