CN210511284U

CN210511284U - Focusing assembly for track lamp and track lamp using same

Info

Publication number: CN210511284U
Application number: CN201921892750.9U
Authority: CN
Inventors: 涂利敏
Original assignee: Individual
Current assignee: Changzhou Dol Led Photoelectricity Co ltd
Priority date: 2018-11-19
Filing date: 2019-11-05
Publication date: 2020-05-12
Anticipated expiration: 2029-11-05
Also published as: CN110748821A

Abstract

The utility model relates to a track lamp of focusing subassembly and applied this focusing subassembly for track lamp, the track lamp is with focusing subassembly includes the lamp section of thick bamboo of coaxial setting, the light source, meniscus lens, zoom lens, meniscus lens is fixed to be set up in the lamp section of thick bamboo, the fixed indent side that sets up at meniscus lens of light source, still include rotatory sleeve and translation sleeve, translation sleeve and rotatory sleeve screw-thread fit, the telescopic spacing cutting of translation is arranged in the cutting slide, so that when rotating the rotation sleeve, can drive rotatory sleeve at lamp section of thick bamboo internal rotation, drive translation sleeve along lamp section of thick bamboo axial translation by rotatory sleeve, axial distance between lens and the meniscus lens is zoomed in order to adjust.

Description

Focusing assembly for track lamp and track lamp using same

Technical Field

The utility model relates to a lighting auxiliary assembly technical field, especially a track lamp is with focusing subassembly and applied this focusing subassembly's track lamp.

Background

The track lamp is a lamp arranged on a similar track, can be used for randomly adjusting the irradiation angle, is generally used as a spot lamp in places needing key illumination, is also called as a track spot lamp, a guide rail lamp and the like, is mainly applied to a COB light source, has the characteristics of high lighting effect, uniform light emitting and no glare, is energy-saving and environment-friendly, and is a preferred device in lighting equipment; in the conventional track lamp, a patent document with an authorization publication number of CN208011429U and a name of a focusing track lamp describes a focusing assembly composed of a fixing ring fixed at the outer end of a lamp body, a focus adjusting ring fixed at the outer end of the fixing ring and capable of rotating relative to the fixing ring, a rotating surface ring arranged in a space enclosed by the focus adjusting ring and the fixing ring, and a focusing lens arranged in the rotating surface ring.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a track lamp of focusing subassembly and applied this focusing subassembly is used to track lamp of simple structure, easily regulation.

In order to solve the technical problem, the focusing assembly for the track lamp provided by the utility model comprises a lamp tube, a light source, a concave-convex lens and a zoom lens which are coaxially arranged, wherein the concave-convex lens is fixedly arranged in the lamp tube, the light source is fixedly arranged at the concave side of the concave-convex lens, the focusing assembly further comprises a rotary sleeve and a translation sleeve, the inner wall of the lamp tube is circumferentially provided with a limit ring groove, the front end of the rotary sleeve is provided with a scale ring, the outer wall of the rotary sleeve is outwards convexly provided with a plurality of rotary sleeve buckles, the inner wall of the rotary sleeve is provided with an internal thread, the outer wall of the translation sleeve is provided with an external thread matched with the internal thread, the tail end of the translation sleeve is axially provided with a limit inserting strip, the zoom lens is fixedly arranged in the translation sleeve, the lamp tube is axially provided with an inserting strip slide matched with the limit inserting strip, during the assembly rotatory sleeve buckle is arranged in the spacing annular, the scale ring is arranged in the front end outside of a lamp section of thick bamboo, the translation sleeve with rotatory sleeve screw-thread fit, spacing cutting is arranged in the cutting slide, so that rotate during the scale ring, can drive rotatory sleeve and be in a lamp section of thick bamboo internal rotation, drive translation sleeve along lamp section of thick bamboo axial translation by rotatory sleeve to adjust the axial distance between zoom lens and the meniscus lens, realize zooming.

The utility model also provides a focusing component for a track lamp of another kind of structure, including a lamp barrel, a light source, a concave-convex lens, a zoom lens which are coaxially arranged, the concave-convex lens is fixedly arranged in the lamp barrel, the light source is fixedly arranged at the concave side of the concave-convex lens, the focusing component also comprises a rotary sleeve and a translation sleeve, the inner wall of the lamp barrel is circumferentially provided with a limit ring groove, the outer wall of the rotary sleeve is outwards protruded and provided with a plurality of rotary sleeve buckles, the inner wall of the rotary sleeve is provided with an internal thread, the outer wall of the translation sleeve is provided with an external thread matched with the internal thread, the tail end of the translation sleeve is axially provided with a limit inserting strip, the zoom lens is fixedly arranged in the translation sleeve, an inserting strip slide matched with the limit inserting strip is axially arranged in the lamp barrel, the rotary sleeve is arranged in the lamp barrel during assembly, the front end of the rotary sleeve is flush with the front end of the lamp barrel or the front end of the, rotatory sleeve buckle is arranged in the spacing annular, the translation sleeve with rotatory sleeve screw-thread fit, spacing cutting is arranged in the cutting slide, so that rotate during the rotatory sleeve, can drive rotatory sleeve and be in a lamp section of thick bamboo internal rotation, by rotatory sleeve drive translation sleeve along a lamp section of thick bamboo axial translation in a lamp section of thick bamboo to the axial distance between adjustment zoom lens and the meniscus lens realizes zooming.

Furthermore, the focusing assembly for the track lamp further comprises a cellular board matched with the translation sleeve, the cellular board is fixedly arranged in the translation sleeve, and the cellular board cover is arranged in front of the zoom lens, so that light glare projected by the zoom lens can be prevented.

Further, rotatory sleeve and translation sleeve are the elastic component, rotatory sleeve buckle includes the axial extension portion and the radial outer convex part of an organic whole setting, axial extension portion with rotatory sleeve is fixed continuous, the front end of radial outer convex part sets up the slope chamfer, so that rotatory sleeve buckle can push spacing annular, the assembly of being convenient for.

Further, zoom lens include circular lens body and the annular lens card edge that integrated into one piece set up, the telescopic inner wall of translation sets up the inner ring platform along circumference, the external diameter on lens card edge is less than the telescopic internal diameter of translation just is greater than the internal diameter of inner ring platform, the telescopic inner wall of translation still sets up a plurality of spacing buckles, and each spacing buckle is arranged in on the same circumference of inner ring platform one side, so that zoom lens pushes when in the translation sleeve, it is spacing to zoom lens formation by spacing buckle and inner ring platform.

Further, the outer wall of the lens body is in clearance fit with the inner wall of the inner ring platform, so that when the zoom lens is arranged in the translation sleeve, the lens body is inserted into the inner ring platform, the limiting clamp edge is arranged between the limiting clamp and the inner ring platform, and axial limiting is carried out on the limiting clamp and the inner ring platform.

Further, the light source is the COB light source, is in including COB base plate and protrusion setting the last column of COB base plate is sent out the light zone, the external diameter that the column sent out the light zone with the internal diameter looks adaptation of concave-convex lens indent side, so that concave-convex lens's edge with behind the COB base plate butt, the column is sent out the light zone and is arranged in concave-convex lens's the interior concave zone, is sent out light by concave-convex lens to the column light zone and assembles.

Further, meniscus's edge outwards extend in order to form with the disc that meniscus integrated into one piece set up, the back of disc set up with COB base plate mounting groove of COB base plate shape looks adaptation, during the assembly COB base plate card goes into in the COB base plate mounting groove to make the column send out light zone and arrange in completely in meniscus's the indent district.

Further, the back of disc along radial setting with the communicating radiating groove of COB base plate mounting groove, the middle part of each radiating groove runs through the disc sets up to make the back and the front of disc can carry out the circulation of air, improve the radiating effect to the COB light source.

Further, set up the heat dissipation base in the lamp section of thick bamboo, the heat dissipation base includes base center post and follows the radial a plurality of heat radiation fins who outwards disperses the setting of base center post, disc, COB base plate with the base center post is fixed continuous, two adjacent heat radiation fins form with the cutting slide of spacing cutting looks adaptation.

A track lamp comprises the focusing assembly for the track lamp.

The technical effects of the utility model are that: (1) compared with the prior art, the focusing assembly for the track lamp adopts the translation sleeve and the rotation sleeve to carry out threaded fit, converts the rotation motion of the rotation sleeve into the telescopic motion of the translation sleeve, and has stable adjustment and simple structure; the spiral sleeve and the lamp barrel are matched in a buckle and groove mode, and the focusing lens and the translation sleeve are matched in a buckle and inner ring table mode, so that the assembly is easy; the concave-convex lens is directly covered on the light source, so that the light source is completely arranged in the concave area of the concave-convex lens, the light source adopts a cylindrical COB light source, the light source is completely covered by the concave-convex lens, light in the light source can be prevented from leaking, light loss is avoided, the divergence angle of the light emitted by the COB light source is about 120-160 degrees, and the light can be focused to 45-60 degrees after being focused by the concave-convex lens; the outer convex side of the concave-convex lens is provided with the translational zoom lens for focusing and condensing, so that the divergence angle of light rays emitted out of the zoom lens can be controlled to be 15-40 degrees, the condensing effect is improved, and the light loss is reduced; the concave-convex lens and the focusing lens are combined for zooming, so that compared with the traditional focusing adjustment of the lens and the reflector, the effect is greatly improved; the concave-convex lens and the disc are integrally molded by injection, and the COB substrate mounting groove is formed, so that the COB light source can be conveniently assembled with the concave-convex lens, and light leakage is avoided; the through heat dissipation groove is formed in the disc, so that the front side of the COB substrate can also dissipate heat, and the heat dissipation effect of the COB power supply is greatly improved; (2) the front end of the rotating sleeve and the front end of the lamp tube are flush with each other and arranged, or the front end of the rotating sleeve is arranged on the inner side of the front end of the lamp tube, the internal thread is adjusted, the position of the external thread is located, and when focusing is conducted, fingers can be directly pressed to rotate on the rotating sleeve, so that the rotating sleeve and the translation sleeve are completely arranged in the lamp tube, the rotating sleeve can be prevented from stretching out of the lamp tube, the integrity of the lamp tube is maintained, the attractiveness of the lamp tube is prevented from being influenced, and the lamp tube is easy to adjust.

Drawings

The invention will be described in further detail with reference to the accompanying drawings:

fig. 1 is a schematic perspective view of a focusing assembly for a track lamp according to the present invention;

fig. 2 is a schematic perspective view of the translation sleeve of the focusing assembly for a track lamp according to the present invention in an extended state;

fig. 3 is an exploded schematic view of the focusing assembly for the track lamp according to the present invention;

fig. 4 is a schematic cross-sectional view of the focusing assembly for a track lamp according to the present invention;

fig. 5 is a schematic perspective view of the rotary sleeve of the present invention;

fig. 6 is a schematic perspective view of the translating sleeve of the present invention;

fig. 7 is a schematic perspective view of the fresnel lens of the present invention;

fig. 8 is a schematic perspective view of the light-focusing member of the present invention;

fig. 9 is a schematic perspective view of another angle of the light-gathering member of the present invention;

fig. 10 is a schematic perspective view of a lamp cartridge according to the present invention;

fig. 11 is a schematic plan view of a COB light source according to the present invention;

fig. 12 is a side view of a COB light source of the present invention;

fig. 13 is a schematic structural view of a lamp cartridge portion according to embodiment 2 of the present invention;

fig. 14 is a schematic structural view of a lamp cartridge portion according to embodiment 3 of the present invention;

fig. 15 is an axial view of a lamp cartridge portion according to embodiment 3 of the present invention.

In the figure: the lamp tube comprises a lamp tube 10, a lamp tube body 101, a heat dissipation base 102, a lamp tube notch 103, heat dissipation fins 104, a cutting slide 105 and a limiting ring groove 106;

a light-condensing member 11, a meniscus lens 111, a disk 112, a COB substrate mounting groove 113, a heat-dissipating groove 114, a mounting hole 115;

the rotary sleeve 12, the rotary sleeve body 121, the internal thread 122, the rotary sleeve buckle 123 and the scale ring 124;

the zoom lens 13, a lens body 131, a lens clamping edge 132;

the sliding sleeve 14, a sliding sleeve body 141, external threads 142, an inner ring table 143, a limiting protrusion 144, a limiting buckle 145 and a limiting inserting strip 146;

a rotating pin 17, a base 20, a connecting upright rod 30,

the COB light source 40, the COB substrate 401, the columnar light emitting region 402 and the connection hole 403;

a honeycomb panel 50.

Detailed Description

Example 1

As shown in fig. 1 and 3, the focusing assembly for a track lamp of this embodiment includes a lamp tube 10, a light source, a light focusing element 11, a zoom lens 13, a rotating sleeve 12 and a translating sleeve 14, where the light focusing element 11 is composed of a concave-convex lens 111 and a circular disc 112, which are integrally formed, as shown in fig. 4 and 10, the lamp tube 10 includes a lamp tube body 101 and a lamp tube rear cover, a heat dissipation base 102 is disposed at the middle portion inside the lamp tube body 101, the heat dissipation base 102 includes a base center post and a plurality of heat dissipation fins 104, which are integrally formed, each heat dissipation fin 104 is radially outwardly disposed along the base center post, one end of each heat dissipation fin 104 is connected to the base center post, and the other end is connected to the inner wall of the lamp tube body 101.

The light source, the concave-convex lens 111 and the zoom lens 13 are coaxially arranged in the lamp tube body 101, the concave-convex lens 111 is fixedly arranged in the lamp tube body 101, the light source is fixedly arranged on the concave side of the concave-convex lens 111, so that light rays emitted by the light source can be converged by the concave-convex lens 111, the zoom lens 13 can be movably arranged on the convex side of the concave-convex lens 111, so that the light rays emitted by the light source enter the zoom lens 13 to be focused again after passing through the concave-convex lens 111, and the illumination angle can be effectively adjusted through twice focusing of the concave-convex lens 111 and the zoom lens 13, so that the lighting effect is improved.

As shown in fig. 5, the rotating sleeve 12 includes a rotating sleeve body 121, the rotating sleeve body 121 is in clearance fit with the lamp cylinder body 101, so that the rotating sleeve body 121 can be inserted into the front end of the lamp cylinder body 101, a limit ring groove 106 is circumferentially arranged on the inner wall of the lamp cylinder body 101, a scale ring 124 is arranged at the front end of the rotating sleeve body 121, 3 rotating sleeve fasteners 123 are uniformly distributed at the tail end of the rotating sleeve body 121, each rotating sleeve fastener 123 includes an axial extending portion and a radial outward protruding portion which are integrally arranged, one end of the axial extending portion is integrally formed with the tail end of the rotating sleeve body 121, the other end is connected with the radial outward protruding portion, and an inclined chamfer is arranged at the front end of the radial outward protruding portion, so that the rotating sleeve fastener 124 can be pushed into the limit ring groove 106, and the radial outward protruding portion is matched with the limit ring groove; the inner wall at the tail end of the rotating sleeve body 121 is provided with an internal thread 122, the translating sleeve 14 comprises a translating sleeve body 141, the outer wall of the translating sleeve body 141 is provided with an external thread 142 matched with the internal thread 122, the tail end of the translating sleeve body 141 is provided with 2 limiting inserting strips 146 along axial symmetry, two adjacent radiating fins 104 form an inserting strip slide 105 matched with the limiting inserting strips 146, the rotating sleeve buckle 123 is arranged in the limiting ring groove 106 during assembly, the scale ring 124 is arranged at the outer side of the front end of the lamp tube body 101, the translating sleeve 14 is in threaded fit with the rotating sleeve 12, the limiting inserting strips 146 are arranged in the inserting strip slide 105, when the scale ring 105 is rotated, the rotating sleeve 12 can be driven to rotate in the lamp tube body 101, the rotating sleeve 12 drives the translating sleeve 14 to axially translate along the lamp tube 10, and the rotating sleeve 14 is prevented from rotating by the.

As shown in fig. 6, an inner ring platform 143 is circumferentially disposed on an inner wall of the middle portion of the translation sleeve body 141, an outer diameter of the lens clip edge 132 is smaller than an inner diameter of the translation sleeve body 141 and larger than an inner diameter of the inner ring platform 143, 3 limit fasteners 145 are uniformly distributed on the inner wall of the translation sleeve body 141, each limit fastener 145 is disposed on a same circumference of one side of the inner ring platform 143, and 3 limit protrusions 144 are uniformly distributed on an annular end surface of the inner ring platform 143, so that when the zoom lens 13 is pushed into the translation sleeve body 141, the limit fasteners 145 and the inner ring platform 143 limit the zoom lens 13, and the edge of the zoom lens 13 makes point contact with the limit protrusions 144, thereby preventing the edge of the zoom lens 13 from directly contacting with the annular end surface of the inner ring platform 143, which affects heat dissipation.

As shown in fig. 7, the zoom lens 13 is a fresnel lens, and the fresnel lens includes a circular lens body 131 and an annular lens rim 132 that are integrally formed, and the fresnel lens is driven by the rotating sleeve 12 and the translating sleeve 14 to translate for adjusting the distance between the fresnel lens and the concave-convex lens 111.

As shown in fig. 11 and 12, the light source is a COB light source 40, the COB light source 40 includes a square COB substrate 401 and a columnar light emitting region 402 protruding from the COB substrate 401, and an outer diameter of the columnar light emitting region 402 is matched with an inner diameter of the concave side of the meniscus lens 111, so that after the edge of the meniscus lens 111 abuts against the COB substrate 401, the columnar light emitting region 402 is disposed in the concave region of the meniscus lens 111, and light emitted from the columnar light emitting region 402 is converged by the meniscus lens 111.

As shown in fig. 8 and 9, the edge of the meniscus 111 extends outward to form a disc 112 integrally provided with the meniscus 111, the light concentrating member 11 being constituted by the disc 112 and the meniscus 111; the back of the disc 112 is provided with a square COB substrate mounting groove 113 adapted to the shape of the COB substrate 401, and the COB substrate 401 is clamped into the COB substrate mounting groove 113 during assembly, so that the columnar light-emitting region 402 is completely disposed in the concave region of the meniscus lens 111. The back of the disk 112 is radially provided with 2 heat dissipation grooves 114 communicated with the COB substrate mounting groove 113, the 2 heat dissipation grooves 114 extend outwards along the diagonal of the square COB substrate mounting groove 113, and the middle of each heat dissipation groove 114 penetrates through the disk 112, so that the back and the front of the disk 112 can be ventilated, and the heat dissipation effect on the COB light source 40 is improved; the other two opposite corners of the square COB substrate mounting groove 113 are provided with mounting holes 115, and the two opposite corners of the COB substrate 401 are provided with connecting holes 403 matched with the mounting holes 115, so that the disc 112 and the COB substrate 401 can be fixedly arranged at the center of the center column of the base through screws, and the light-gathering piece 11 and the light source can be conveniently assembled.

The outer wall of the lens body 131 is in clearance fit with the inner wall of the inner ring platform 143, so that when the zoom lens 13 is placed in the translation sleeve body 141, the lens body 131 is inserted into the inner ring platform 143, the limit clamp edge 143 is placed between the limit clamp 145 and the inner ring platform 143, and axial limit is performed by the limit clamp 145 and the inner ring platform 143, so that the zoom lens 13 can be driven to move when the rotation sleeve 12 rotates, the axial distance between the zoom lens 13 and the meniscus lens 111 is adjusted, and zooming is achieved.

When the focusing assembly for the track lamp is applied to the track lamp, the focusing assembly further comprises a rotating pin 17, the vertical rod 30 and the base 20 are connected, the bottom end of the vertical rod 30 is in running fit with the base 20, the rotating pin 17 is arranged at the top end of the vertical rod 30, and a lamp tube opening 103 suitable for the vertical rod 30 to penetrate through is formed in the side wall of the tail portion of the lamp tube body 101, so that the top end of the vertical rod 30 extends into the lamp tube body 101 to be fixedly connected with the rotating pin 17 fixedly arranged in the lamp tube body 101, and the lamp tube 10 can swing up and down around the rotating pin 17.

Preferably, the lead angles of the internal thread 122 and the external thread 142 are 120 °, the adjustable distance between the zoom lens 13 and the meniscus lens 111 is 18mm, the length of the translation sleeve 14 is set, the rotation angle of the rotation sleeve 12, that is, the amount of movement of the translation sleeve 14 when the tail end of the translation sleeve 14 abuts against the heat sink base 102 is limited, an annular boss is provided on the inner wall of the rotation sleeve 12, the annular boss is provided inside the internal thread 122 in the circumferential direction, so that when the translation sleeve 14 moves until the front end of the translation sleeve 14 abuts against the annular boss, the translation sleeve 14 is limited, and the data can be adjusted according to specific specifications.

The heat dissipation base 102 is preferably formed by injection molding of aluminum alloy, the lamp cylinder body 101 is preferably formed by plastic, and the rotating sleeve 12, the translation sleeve 14 and the lamp cylinder rear cover are elastic plastic parts.

When the focusing device is used, the scale ring 124 of the rotating sleeve 12 is adjusted to enable the rotating sleeve 12 to rotate in the lamp cylinder body 101, and the rotating sleeve 12 drives the translation sleeve 14 to move axially along the lamp cylinder body 101, as shown in fig. 2, so that focusing is achieved.

Example 2

On the basis of embodiment 1, the focusing assembly for a track lamp of the present embodiment has the following modifications:

as shown in fig. 13, the front end of the rotating sleeve 12 is not provided with the scale ring 124, or the scale value is directly provided on the end surface of the front end of the rotating sleeve 12, when assembling, the rotating sleeve 12 is placed in the lamp tube 10, the front end of the rotating sleeve 12 is flush with the front end of the lamp tube 10, or the front end of the rotating sleeve 12 is slightly lower than the front end of the lamp tube 10 so that the rotating sleeve 12 is completely placed in the lamp tube 10, the front end of the rotating sleeve 12 is not too far away from the front end of the lamp tube 10, so that the finger of the user can touch the front end, the inner wall of the front end of the rotating sleeve body is provided with the internal thread, the translating sleeve 14 comprises a translating sleeve body, the outer wall of the translating sleeve body is provided with the external thread adapted to the internal thread, when using, the user presses the finger on the front end of the lamp tube 10 to the front end of the rotating sleeve 12, the rotating sleeve 12 is rotated by the friction between the finger and the rotating sleeve 12, the translating sleeve 14 is driven by the, so as to adjust the axial distance between the zoom lens and the concave-convex lens and realize zooming.

Example 3

On the basis of embodiment 2, the focusing assembly for a track lamp of the present embodiment has the following modifications:

the variable-focus track lamp further comprises a cellular board 50 matched with the translation sleeve 14, as shown in fig. 14 and 15, the cellular board 50 is a circular thin plate, the diameter of the cellular board 50 is matched with the inner diameter of the translation sleeve 14, so that the cellular board 50 can be fixedly arranged in the translation sleeve 14, the translation sleeve 14 and the rotation sleeve 12 are arranged in the lamp tube 10, and the cellular board 50 covers the front of the zoom lens 13, so that glare generated by light rays projected by the zoom lens 13 can be prevented while light transmission is not influenced, and the anti-glare function is realized.

Example 4

the variable-focus track lamp also comprises a cellular board matched with the translation sleeve, wherein the cellular board is a circular thin board, the diameter of the cellular board is matched with the inner diameter of the translation sleeve, so that the cellular board can be fixedly arranged in the translation sleeve, and the cellular board is covered in front of the zoom lens, so that the light rays glare projected by the zoom lens can be prevented while the light transmission is not influenced, and the anti-glare function is realized.

Example 6

A track lamp comprising the focusing assembly of embodiment 3 to achieve a zoom function.

It should be understood that the above examples are only for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And that obvious changes and modifications may be made without departing from the spirit of the invention.

Claims

1. The utility model provides a focusing component for track lamp, its characterized in that, includes a lamp section of thick bamboo, light source, meniscus lens, the zoom lens of coaxial setting, meniscus lens is fixed to be set up in the lamp section of thick bamboo, the light source is fixed to be set up meniscus side of meniscus lens, still includes rotatory sleeve and translation sleeve, the inner wall of lamp section of thick bamboo sets up spacing annular along circumference, outwards protrusion sets up a plurality of rotatory sleeve buckles on the outer wall of rotatory sleeve, the inner wall of rotatory sleeve sets up the internal thread, the outer wall of translation sleeve set up with the external screw thread of internal thread looks adaptation, the tail end of translation sleeve sets up spacing cutting along the axial, zoom lens is fixed to be set up in the translation sleeve, set up along the axial in the lamp section of thick bamboo with the cutting slide of spacing cutting looks adaptation, rotatory sleeve is arranged in the lamp section of thick bamboo during the assembly, and the front end of the lamp section of thick bamboo flush or the front end of rotation sleeve is arranged in the, rotatory sleeve buckle is arranged in the spacing annular, the translation sleeve with rotatory sleeve screw-thread fit, spacing cutting is arranged in the cutting slide, so that rotate during the rotatory sleeve, can drive rotatory sleeve and be in a lamp section of thick bamboo internal rotation, by rotatory sleeve drive translation sleeve along a lamp section of thick bamboo axial translation in a lamp section of thick bamboo to the axial distance between adjustment zoom lens and the meniscus lens.

2. The focusing assembly for a track lamp of claim 1, further comprising a cellular board adapted to the translating sleeve, wherein the cellular board is fixedly disposed within the translating sleeve and covers the front of the zoom lens.

3. The focusing assembly for a railway lamp as claimed in claim 2, wherein the rotating sleeve and the translating sleeve are elastic members, the rotating sleeve snap comprises an axial extending portion and a radial outward protruding portion which are integrally formed, the axial extending portion is fixedly connected with the rotating sleeve, and the front end of the radial outward protruding portion is provided with an inclined chamfer so that the rotating sleeve snap can be pushed into the limit ring groove.

4. The focusing assembly for the track lamp as claimed in claim 3, wherein the zoom lens comprises a circular lens body and an annular lens clamp edge, the circular lens body and the annular lens clamp edge are integrally formed, an inner ring platform is circumferentially arranged on the inner wall of the translation sleeve, the outer diameter of the lens clamp edge is smaller than the inner diameter of the translation sleeve and larger than the inner diameter of the inner ring platform, a plurality of limiting buckles are further arranged on the inner wall of the translation sleeve, and each limiting buckle is arranged on the same circumference of one side of the inner ring platform, so that when the zoom lens is pushed into the translation sleeve, the limiting buckles and the inner ring platform limit the zoom lens.

5. The track lamp focusing assembly of claim 4, wherein the outer wall of the lens body is a clearance fit with the inner wall of the inner annular ledge such that the lens body is inserted into the inner annular ledge when the zoom lens is disposed within the translating sleeve.

6. The focusing assembly for the track lamp of claim 5, wherein the light source is a COB light source, and comprises a COB substrate and a columnar light emitting region protruding from the COB substrate, wherein the outer diameter of the columnar light emitting region is matched with the inner diameter of the concave side of the concave-convex lens, so that the concave-convex lens is arranged in the concave region of the concave-convex lens after the edge of the concave-convex lens abuts against the COB substrate.

7. The focusing assembly for the track lamp of claim 6, characterized in that, the edge of meniscus extends outwards in order to form with the disc that meniscus integrated into one piece set up, the back of disc set up with COB base plate mounting groove of COB base plate shape looks adaptation, during the assembly COB base plate card goes into in COB base plate mounting groove to make the columnar light-emitting zone arrange in completely in meniscus district of meniscus.

8. The focusing assembly for the track lamp as claimed in claim 7, wherein the disk has heat dissipation grooves radially formed on a rear surface thereof to communicate with the COB substrate mounting groove, and a central portion of each of the heat dissipation grooves is formed to penetrate the disk.

9. The focusing assembly for the track lamp according to claim 8, wherein a heat dissipation base is disposed in the lamp barrel, the heat dissipation base comprises a base center post and a plurality of heat dissipation fins radially outwardly disposed along the base center post, the disk and the COB substrate are fixedly connected to the base center post, and two adjacent heat dissipation fins form a strip-inserting slideway adapted to the limiting strip-inserting.

10. A track lamp comprising a focusing assembly for a track lamp as claimed in any one of claims 1 to 9.