CN217519720U - LED laser searchlight with adjustable focal length - Google Patents

Abstract

The utility model relates to a focus-adjustable LED laser searchlight, which comprises a lamp holder, a lamp body and a mounting bracket which is arranged on the lamp holder and used for supporting the lamp body, wherein the lamp body comprises a cylindrical shell, an axial cavity is formed inside the cylindrical shell, the tail end of the axial cavity forms a sealing plate, and a fixing plate is arranged at the lower part of the axial cavity; a laser generator: it is installed in the axial cavity and used for generating laser; a focusing lens assembly: the convex lens is arranged in front of the laser generator and forms a convex lens at a position corresponding to the laser projection direction generated by the laser generator; a primary lens assembly: the focusing lens assembly is positioned in front of the focusing lens assembly and is fixedly arranged on the fixing plate; a secondary lens assembly: at a position forward of said primary lens assembly; a transparent cover: the secondary lens component is positioned in front of the secondary lens component, and is fixedly arranged on the cylindrical shell and is far away from one end of the sealing plate. This practical searchlight throws the effect good.

Description

LED laser searchlight with adjustable focal length

Technical Field

The utility model relates to a searchlight especially relates to a LED laser searchlight of focusing of being convenient for according to throw distance requirement.

Background

The searchlight has the advantages that the searchlight has the effects of deep and long projection distance and excellent visibility, is particularly suitable for some engineering operation occasions and some navigation fields, although the searchlight in the prior art also has the performance of adjusting the focal length, most of the searchlights in the prior art adopt the bowl-shaped reflecting cover arranged in the lamp body, and then a high-power light-emitting element such as a hernia headlamp, an LED headlamp and the like is arranged in front of the reflecting cover, the searchlight with the structure usually causes the condition of poor sight because the reflecting performance of the reflecting cover is mainly adopted to realize the long-distance focusing, namely the light escapes and is scattered in the reflecting process, and the phenomenon of halo generated when the searchlight projects for a long distance is also adopted, and the focal length of the searchlight with the structure is adjustable because the light-emitting element in front of the reflecting cover is arranged into a movable structure, and the focusing is realized by adjusting the distance between the light-emitting element and the reflecting cover, the structure has the advantages that the heat energy of the light-emitting element in use is very high, the light-emitting element is required to be movable and heat dissipation is required, the design of the whole structure is required to be very high, and the service life is difficult to guarantee.

Based on the above-mentioned shortcomings in the prior art, the present company has made further design and improvement on searchlights.

Disclosure of Invention

An object of the utility model is to provide a simple structure and focus adjustable LED laser searchlight.

In order to achieve the above purpose, the utility model adopts an LED laser searchlight with adjustable focal length, which comprises a lamp holder, a lamp body and a mounting bracket arranged on the lamp holder and used for supporting the lamp body, wherein the lamp body comprises a cylindrical shell, a laser generator, a focusing lens component, a primary lens component, a secondary lens component and a transparent cover,

the cylindrical shell is internally provided with an axial cavity, the tail end of the axial cavity forms a sealing plate, and a fixing plate is arranged at the lower position of the axial cavity;

the laser generator is characterized in that: it is installed in the axial cavity for take place laser, its concrete mounting structure as follows: the upper side and the lower side of the laser generator are respectively provided with a radiating block, namely, the laser generator is arranged between the upper radiating block and the lower radiating block, the lower radiating block is arranged on the fixed plate, and the upper radiating block is arranged on the cylindrical shell;

the focusing lens assembly: the focusing lens component is arranged in front of the laser generator, and forms a convex lens at a position corresponding to the laser projection direction generated by the laser generator, namely the focusing lens component is arranged in the laser projection direction, in the utility model, the structure is embodied as comprising a slider, an intermediate connecting piece used for fixing the convex lens and a guide rail arranged on the fixing plate, the slider and the guide rail form sliding fit, the intermediate connecting piece is arranged on the slider, the fixing plate is provided with a motor used for driving the intermediate connecting piece to axially move, the technical personnel in the field can know through the description, the property of the searchlight of the utility model for realizing adjustable focal length is mainly embodied as that the motor drives the intermediate connecting piece to axially move, and then drives the convex lens arranged on the intermediate connecting piece to axially move along with the convex lens, the distance between the laser generator and the convex lens is adjustable, and simultaneously, because the searchlight of the utility model adopts a direct laser irradiation mode instead of a reflection mode, and the convex lens is matched instead of a light-emitting element, the heat dissipation of the searchlight can be not considered, thereby greatly simplifying the structure;

the primary lens assembly: the focusing lens assembly is provided with a primary lens, is positioned in front of the focusing lens assembly and is fixedly arranged on the fixing plate; the utility model discloses in, the one-level lens subassembly includes even light level crossing, is used for installing the sleeve of even light level crossing and one-level lens and be used for supporting telescopic support frame, even light level crossing distribute closely in one side of focusing lens subassembly, one-level lens distribute in the axial the place ahead of even light level crossing, the support frame fastening is installed on the fixed plate.

The secondary lens assembly: a secondary lens, which is positioned in front of the primary lens component; the utility model discloses in, the second grade lens subassembly is still including being used for installing annular aluminium heat-conducting plate, the annular mounting panel of second grade lens and installing the radiating fin group in annular aluminium heat-conducting plate rear, this radiating fin group have a plurality of C type radiating fin and run through radiating fin group and fixed install in heat conduction strip on the annular aluminium heat-conducting plate, heat conduction strip with mounting structure between the annular aluminium heat-conducting plate specifically describes as follows: in order to improve the heat conduction efficiency, the contact area between the heat conduction strip and the annular aluminum heat conduction plate is increased, a bending part is formed at one end, close to the annular aluminum heat conduction plate, of the heat conduction strip, a groove is formed in the annular aluminum heat conduction plate at a position corresponding to the bending part, the groove is matched with the bending part, the contact area between the heat conduction strip and the annular aluminum heat conduction plate is further effectively increased to serve as a specific installation structure, the annular installation plate is installed on the annular aluminum heat conduction plate in a butt joint mode through fasteners such as bolts and the like, namely the bending part is clamped between the annular installation plate and the annular aluminum heat conduction plate, and further the fixed connection of the heat dissipation fin group is formed; additionally, the utility model discloses in, so adopt annular aluminium heat conduction plate structure, not only consider to install the needs at this annular aluminium heat conduction plate center with secondary lens, consider more on the annular aluminium heat conduction plate, be located a plurality of annular aluminium base boards can also be installed to secondary lens's radial direction position, and this annular aluminium base board facing is equipped with a plurality of LED luminescence chips, and is therefore visible, the utility model discloses a so call "LED laser" searchlight of searchlight, as the name implies, it not only adopts laser as the light emitting source, has also cooperated LED luminescence chip as the light emitting source simultaneously, and this has its natural advantage, and laser and LED light source cooperation are used promptly, and the focus of laser is effectual, and the LED light source can effectively enlarge the central circle area of its focus, effectively enlargies remote projected focus coverage promptly, and the effect is obvious.

The transparent cover is: the lens assembly is positioned in front of the secondary lens assembly, and is fixedly arranged on the cylindrical shell and is far away from one end of the sealing plate.

Through the improvement of above-mentioned technical scheme to prior art, the utility model discloses a searchlight effect is obvious, through the linear drive of motor promptly, can carry out axial displacement to the focus lens subassembly, adjusts the distance between convex lens and the laser generator promptly, and realizes the focusing function, and simultaneously, the cooperation of convex lens and one-level lens and second grade lens is used, can further prevent each and throw, the escape phenomenon of some light of refraction in-process for the ideal dribbling that the effect of throwing that the searchlight embodies is the utmost.

Drawings

FIG. 1 is a schematic perspective view of a searchlight of the present invention;

FIG. 2 is a perspective exploded view of the middle lamp body of the present invention;

FIG. 3 shows the laser generator, focusing lens assembly and primary lens assembly of the present invention in a fixed position

A schematic perspective view on a plate;

FIG. 4 is a schematic perspective view of a secondary lens assembly;

FIG. 5 is another perspective view of FIG. 4;

FIG. 6 is a schematic perspective view of a primary lens assembly of the present invention;

fig. 7 is a schematic cross-sectional view of fig. 6.

Detailed Description

Fig. 1-7 show that the present embodiment employs an adjustable focal length LED laser searchlight, which is shown in fig. 1, the searchlight of the present embodiment includes a lamp holder 1, a lamp body 2 and a mounting bracket 3 mounted on the lamp holder 1 and used for supporting the lamp body 2, further shown in fig. 2, the lamp body 2 includes a cylindrical shell 20, a laser generator 21, a focusing lens assembly 22, a primary lens assembly 23, a secondary lens assembly 24 and a transparent cover 25, as is apparent from fig. 2, the cylindrical shell 20 has a structure in which an axial cavity 200 is formed inside, a sealing plate 201 is formed at the tail end of the axial cavity 200, and a fixing plate 202 is mounted at a position below the axial cavity 200;

the laser generator 21: which is installed in the axial cavity 200 for generating laser, and further shown in fig. 2 and 3, the specific installation structure of the laser generator 21 in the cylindrical housing 20 is as follows: the upper and lower sides of the laser generator 21 are respectively provided with the heat dissipation blocks 210, that is, the laser generator 21 is installed between the upper and lower heat dissipation blocks 210, the lower heat dissipation block 210 is installed on the fixing plate 202, and the upper heat dissipation block 210 is installed on the cylindrical housing 20, that is, as shown in fig. 3, a U-shaped bracket 211 is arranged above the upper heat dissipation block 210, so as to fasten the upper heat dissipation block 210 of the laser generator 21 on the cylindrical housing 20;

the focusing lens assembly 22, further shown in FIGS. 2 and 3: the focusing lens assembly 22 is disposed in front of the laser generator 21 (i.e. in an axial direction, the focusing lens assembly 22 is located in a light projection direction), and forms a convex lens 220 at a position corresponding to the laser projection direction generated by the laser generator 21, i.e. the focusing lens assembly 22 is disposed in the laser projection direction, in this embodiment, the focusing lens assembly 22 is specifically configured to include a slider 221, an intermediate connector 222 for fixing the convex lens 220, and a guide rail 223 disposed on the fixing plate 202, the slider 221 and the guide rail 223 form a sliding fit, the intermediate connector 222 is disposed on the slider 221, the fixing plate 202 is provided with a motor 224 for driving the intermediate connector 222 to move axially, and as can be known by those skilled in the art from the foregoing description, the performance of the searchlight of this embodiment for achieving adjustable focal length is mainly embodied in that the motor 224 drives the intermediate connector 222 to move axially, the convex lens 220 mounted on the middle connecting piece 222 is driven to move axially along with the middle connecting piece, so that the distance between the laser generator 21 and the convex lens 220 is adjustable, meanwhile, because the searchlight of the embodiment adopts a direct laser emitting mode instead of a reflection mode, and the convex lens 220 is matched with a non-light-emitting element, the heat dissipation performance of the searchlight can be not considered, and the design requirement of the structure is greatly simplified;

as shown in fig. 2 and fig. 6 and 7 in combination, in this embodiment, the primary lens assembly 23: it has a primary lens 230, and is located in front of the focusing lens assembly 22, and is fixedly mounted on the fixing plate 202; specifically, the primary lens assembly 23 includes a light-homogenizing plane mirror 231, a sleeve 232 for installing the light-homogenizing plane mirror 231 and the primary lens 230, and a support frame 233 for supporting the sleeve 232, in the sleeve 232, the light-homogenizing plane mirror 231 is distributed at a side close to the focusing lens assembly 22, the primary lens 230 is distributed in front of the light-homogenizing plane mirror 231 in the axial direction, and the support frame 233 is fixedly installed on the fixing plate 202.

As can be seen from fig. 2 in conjunction with fig. 4 and 5, the secondary lens assembly 24: it has a secondary lens 240 and it is located axially forward of the primary lens assembly 23; in this embodiment, the secondary lens assembly 24 further includes an annular aluminum heat-conducting plate 241 for mounting the secondary lens 240, an annular mounting plate 242 and a heat-dissipating fin set 243 mounted behind the annular aluminum heat-conducting plate 241, the heat-dissipating fin set 243 has a plurality of C-shaped heat-dissipating fins 2430 and a heat-conducting strip 2431 penetrating through the heat-dissipating fin set 243 and fixedly mounted on the annular aluminum heat-conducting plate 241, and the mounting structure between the heat-conducting strip 2431 and the annular aluminum heat-conducting plate 241 is described as follows: in order to improve the heat conduction efficiency, that is, the contact area between the heat conduction strip 2431 and the annular aluminum heat conduction plate 241 is increased, a bending part 24310 is formed at one end of the heat conduction strip 2431 close to the annular aluminum heat conduction plate 241, a groove 2410 is formed at the position of the annular aluminum heat conduction plate 241 corresponding to the bending part 24310, the groove 2410 is matched with the bending part 24310, so that the contact area between the heat conduction strip 2431 and the annular aluminum heat conduction plate 241 is effectively increased, as a specific installation structure, the annular installation plate 242 is installed on the annular aluminum heat conduction plate 241 in a butt joint manner through fastening pieces such as bolts, namely, the bending part 24310 is clamped between the annular installation plate 242 and the annular aluminum heat conduction plate 241, so as to form a fixed connection for the heat dissipation fin group 243; in addition, in the present embodiment, since the annular aluminum heat conducting plate 241 is adopted, not only the need of installing the secondary lens 240 in the center of the annular aluminum heat conducting plate 241 is considered, but also a plurality of annular aluminum substrates 2411 can be installed on the annular aluminum heat conducting plate 241 at the radial position of the secondary lens 240, the annular aluminum substrate 2411 is pasted with a plurality of LED light emitting chips 24110, so that the searchlight of the embodiment is called as an LED laser searchlight, as the name implies, it not only adopts laser as a luminous source, but also matches with an LED luminous chip 24110 as a luminous source, which has natural advantages, the laser and the LED light source are matched for use, the focusing effect of the laser is good, the area of a central circle focused by the LED light source can be effectively enlarged, the coverage range of a focusing point projected in a long distance is effectively enlarged, and the effect is obvious.

Fig. 2 also shows that the transparent cover 25 on the searchlight body 2 of the embodiment: which is located at the axial front position of the secondary lens assembly 24 and is fixedly mounted on the cylindrical housing 20 at a position far from one end of the sealing plate 201.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and the above-described embodiments and the description only illustrate the principle of the present invention, and that there are various changes and modifications of the present invention, which are introduced by the spirit of the technical solution of the present invention and fall within the scope of the claims of the present invention. The scope of the invention is defined by the appended claims, the description, the drawings attached to the description and their equivalents.

Claims (10)

1. The utility model provides an adjustable LED laser searchlight of focus, includes lamp stand and lamp body and installs on the lamp stand and be used for supporting the installing support of lamp body, its characterized in that: the lamp body comprises a cylindrical shell, wherein an axial cavity is formed in the cylindrical shell, a sealing plate is formed at the tail end of the axial cavity, and a fixing plate is arranged at the lower position of the axial cavity;

a laser generator: it is installed in the axial cavity and used for generating laser;

a focusing lens assembly: the convex lens is arranged in front of the laser generator and forms a convex lens at a position corresponding to the laser projection direction generated by the laser generator;

a primary lens assembly: the focusing lens assembly is provided with a primary lens, is positioned in front of the focusing lens assembly and is fixedly arranged on the fixing plate;

a secondary lens assembly: a secondary lens, which is positioned in front of the primary lens component;

a transparent cover: the secondary lens component is positioned in front of the secondary lens component, and is fixedly arranged on the cylindrical shell and is far away from one end of the sealing plate.

2. The adjustable-focus LED laser searchlight of claim 1, wherein: focusing lens subassembly includes the slider, is used for fixing convex lens's intermediate junction spare and setting are in guide rail on the fixed plate, the slider with the guide rail forms the cooperation of sliding, intermediate junction spare is installed on the slider, the fixed plate facial make-up is equipped with and is used for the drive intermediate junction spare axial displacement's motor.

3. The adjustable-focus LED laser searchlight according to claim 1 or 2, characterized in that: the secondary lens component comprises an annular aluminum heat-conducting plate used for installing the secondary lens, an annular mounting plate and a radiating fin group arranged behind the annular aluminum heat-conducting plate, wherein the radiating fin group is provided with a plurality of C-shaped radiating fins and a heat conducting strip which penetrates through the radiating fin group and is fixedly arranged on the annular aluminum heat-conducting plate.

4. The adjustable-focus LED laser searchlight of claim 3, wherein: and a plurality of annular aluminum substrates are arranged on the annular aluminum heat-conducting plate and positioned in the radial direction of the secondary lens, and a plurality of LED light-emitting chips are attached to the annular aluminum substrates.

5. The adjustable-focus LED laser searchlight of claim 4, wherein: the heat conducting strip is characterized in that a bent part is formed at one end, close to the annular aluminum heat conducting plate, of the heat conducting strip, a groove is formed in the position, corresponding to the bent part, of the annular aluminum heat conducting plate, the groove is matched with the bent part, the annular mounting plate is installed on the annular aluminum heat conducting plate in a butt joint mode, the bent part is clamped between the annular mounting plate and the annular aluminum heat conducting plate, and then the heat radiating fin group is fixedly connected.

6. The adjustable-focus LED laser searchlight according to claim 1 or 2, characterized in that: the one-level lens subassembly includes even light level crossing, is used for installing the sleeve of even light level crossing and one-level lens and being used for supporting telescopic support frame, even light level crossing distribute closely in one side of focusing lens subassembly, one-level lens distribute in the axial the place ahead of even light level crossing, the support frame fastening is installed on the fixed plate.

7. The adjustable-focus LED laser searchlight of claim 3, wherein: the one-level lens subassembly includes even light level crossing, is used for installing the sleeve of even light level crossing and one-level lens and being used for supporting telescopic support frame, even light level crossing distribute closely in one side of focusing lens subassembly, one-level lens distribute in the axial the place ahead of even light level crossing, the support frame fastening is installed on the fixed plate.

8. The adjustable-focus LED laser searchlight of claim 4, wherein: the one-level lens subassembly includes the dodging level crossing, is used for installing the sleeve of dodging level crossing and one-level lens and is used for supporting telescopic support frame, the dodging level crossing distribute closely in one side of focusing lens subassembly, the one-level lens distribute in the axial the place ahead of dodging level crossing, the support frame fastening is installed on the fixed plate.

9. The adjustable-focus LED laser searchlight of claim 5, wherein: the one-level lens subassembly includes even light level crossing, is used for installing the sleeve of even light level crossing and one-level lens and being used for supporting telescopic support frame, even light level crossing distribute closely in one side of focusing lens subassembly, one-level lens distribute in the axial the place ahead of even light level crossing, the support frame fastening is installed on the fixed plate.

10. The adjustable-focus LED laser searchlight of claim 9, wherein: the upper side and the lower side of the laser generator are respectively provided with a heat dissipation block.

Images