Optical structure and track lamp

Abstract

The optical structure comprises a reflection cup, a lens and a limiting piece, the reflection cup comprises a cup bottom and a cup wall part, the cup bottom and the cup wall part form a containing cavity in a surrounding mode, and the cup bottom and the cup wall part are provided with a first opening and a second opening which are communicated with the containing cavity respectively; the lens comprises a lens body, a light inlet part and a light outlet part, the light outlet part is provided with a first convex ring abutting against the cup wall part, the light inlet part is provided with a light inlet communicated with the first opening, and the light inlet part abuts against the cup bottom; the limiting piece is fixedly connected with the reflection cup, and the limiting piece limits the lens body in the containing cavity; the first protruding ring covers the second opening, and a light reflecting gap is formed between the lens body and the cup wall part. According to the optical structure, the lens body is fixed in the containing cavity of the reflection cup through the limiting piece and abuts against the cup bottom and the cup wall of the reflection cup, so that the lens is limited in the axial direction and the circumferential direction, and precise light control processing is conducted in cooperation with the reflection cup and the anti-dazzle ring. The invention further provides a track lamp comprising the optical structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting equipment, and in particular relates to an optical structure and a track light. Background Art

[0002] Track lights are LED lighting devices that can move on a track and are guided by a track head and a connecting rod to change position, thereby adjusting the lighting angle.

[0003] Track lights are mostly used for accent lighting, and their lamp bodies are generally spotlights or downlights with lenses. During the lens installation process, the lens and the light source bracket are assembled point-to-point, for example, the guide column set on the lens and the groove set on the light source bracket cooperate with each other to connect. Due to the limited installation space inside the lamp body, it is not easy to position the lens on the light source bracket. In addition, it is also impossible to ensure that the guide column of the lens is accurately docked with the groove on the light source bracket. If the installation is not in place, it will lead to problems such as loose components, wire pressing and poor light output.

[0004] The prior art discloses a deep anti-glare downlight, comprising a lamp housing, a reflector cup arranged on the lamp housing, a dual-purpose structure arranged on the reflector cup, an aluminum plate arranged inside the lamp housing, a plurality of mounting holes arranged on the aluminum plate, a lamp bracket mounted on the aluminum plate arranged on the lower side of the lens, and the lamp housing is mounted on the aluminum plate, and then the lamp bracket is mounted on the mounting holes of the aluminum plate. The downlight is used to mount lenses of different structures by arranging the dual-purpose structure on the reflector cup, but the lens cannot be fixed in multiple directions, and there is still a situation where the lens is loose and the light cannot be accurately controlled. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides an optical structure, which uses a limiter to fix the lens body in the accommodating cavity of the reflector cup, and the lens is respectively in contact with the bottom and wall of the reflector cup, so that the lens is limited in the axial and circumferential directions, so that the lens installation position is stable and easy to install in the lamp body, so as to cooperate with the reflector cup and the anti-glare ring to perform precise light control. The present invention also provides a track lamp including the optical structure.

[0006] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0007] In a first aspect, the present invention provides an optical structure, comprising:

[0008] The reflective cup comprises a cup bottom and a cup wall portion, wherein the cup bottom and the cup wall portion surround and form a receiving cavity, and the cup bottom and the cup wall portion are respectively provided with a first opening and a second opening communicating with the receiving cavity;

[0009] A lens, comprising a lens body, and a light entrance portion and a light exit portion provided at both ends of the lens body, wherein the light exit portion is provided with a first convex ring abutting against the cup wall portion, the light entrance portion is provided with a light entrance port communicating with the first opening, and the light entrance portion abuts against the bottom of the cup; and

[0010] A limiting member, which is an annular structure, is fixedly connected to the reflective cup, and limits the lens body in the accommodating cavity;

[0011] Wherein, the first convex ring covers the second opening, and a reflective gap is provided between the lens body and the cup wall.

[0012] In some embodiments, the bottom of the cup includes a substrate and an elastic boss and an avoidance groove provided on the substrate, the substrate is provided with a first base surface and a second base surface relative to each other, the elastic boss is extended from the first base surface toward the accommodating cavity, the light incident portion is provided with a light incident end located at the outer periphery of the light incident port, the light incident end abuts against the elastic boss, and the elastic boss partially extends into the avoidance groove.

[0013] In some embodiments, the elastic boss is provided with a first positioning block, the light incident end is provided with a first positioning groove, the first positioning block is fitted and connected in the first positioning groove; and the second base surface is fitted and connected to the lamp body.

[0014] In some embodiments, the limiting member includes a limiting body and a second convex ring disposed inside the limiting body, and the first convex ring is fixed between the upper edge of the cup wall and the second convex ring.

[0015] In some embodiments, the first convex ring is provided with a groove, and the upper edge of the cup wall is provided with a limit block, and the limit block is fitted and connected in the groove.

[0016] In some embodiments, the optical structure also includes a fastener, the limiting body is provided with a through hole, the cup wall portion is extended outward to provide a mounting portion, the mounting portion is provided with a mounting hole, the fastener passes through the through hole and is fixedly connected to the mounting hole, thereby fixing the reflective cup, the lens and the limiting member together.

[0017] In some embodiments, the optical structure further includes an anti-glare ring detachably connected to the limiting member, the limiting body is provided with a card slot, the anti-glare ring is provided with a card block, and the card block is snap-connected to the card slot.

[0018] In a second aspect, the present invention provides a track light, comprising a lamp body, a rear cover, a light source assembly, a power supply assembly and a connecting rod, and the above-mentioned optical structure;

[0019] The lamp body comprises a shell, a mounting base and a heat sink, the heat sink is fixedly connected to the inner wall of the shell and the outer wall of the mounting base, the shell is provided with a light emitting cavity, the mounting base comprises a mounting surface and a second positioning groove provided on the mounting surface, and the light source assembly is fixedly connected to the mounting surface;

[0020] The optical structure is installed in the light output cavity, and a second positioning block facing the installation surface is provided at the bottom of the cup, and the second positioning block is matched and connected in the second positioning groove.

[0021] In some embodiments, the light source assembly includes a light source board and a COB light source attached to the light source board, the light source board is attached to the mounting surface, the COB light source is entirely located in the first opening, and the center line of the COB light source coincides with the center line of the lens body;

[0022] The light emitted by the COB light source enters the lens body through the light inlet, and is emitted to the outside through the light exit portion and the anti-glare ring provided on the limiter; part of the light overflows to the outside of the cup wall, is reflected by the reflective cup, passes through the reflection gap, and then re-enters the lens body, and finally is emitted to the outside through the light exit portion and the anti-glare ring.

[0023] In some embodiments, in the lamp body, the housing, the mounting base and the heat sink are integrally die-cast, and the lamp body is provided with heat dissipation grooves between adjacent heat sinks;

[0024] The rear cover is provided with a heat dissipation through hole, the rear cover is fixedly connected to the rear end of the lamp body, and the housing is also provided with a heat dissipation cavity; the heat dissipation through hole and the heat dissipation groove are arranged corresponding to each other, and the heat dissipation groove, the heat dissipation cavity and the heat dissipation through hole constitute a heat dissipation channel;

[0025] The power supply assembly is installed in the heat dissipation cavity, and the connecting rod is rotatably connected to the lamp body.

[0026] In summary, the present invention has at least the following benefits:

[0027] 1. In the optical structure provided by the present invention, the limiting member in the form of an annular structure fixedly connects the lens body to the reflective cup, so that the light entrance and light exit of the lens are respectively in contact with the bottom and wall of the cup, and the lens body is axially limited in the accommodating cavity; in addition, the reflective cup is connected with the groove of the first convex ring through the limiting block on the upper edge of the cup wall, and the lens body is circumferentially limited in the accommodating cavity while being positioned and installed. The modular optical structure first installs the lens in the reflective cup and then installs it in the lamp body, so as to realize convenient and stable assembly of the lens.

[0028] 2. The optical structure provided by the present invention can effectively solve the problem of loose and unstable installation of the lens due to size tolerance or assembly deviation between the lens and the reflective cup by arranging an elastic boss at the bottom of the cup so as to cooperate with the light incident part of the lens.

[0029] 3. In the track light provided by the present invention, the center line of the light source coincides with the center line of the lens body, which can ensure that the lens can effectively control the light emitted by the light source so that the light shape and light direction meet the lighting requirements; and the track light adopts a convection heat dissipation channel, which can effectively improve the heat dissipation efficiency and increase the service life of the track light. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the decomposition of the optical structure of Example 1 of the present invention.

[0031] Figure 2 Schematic diagram of the optical structure of embodiment 1 of the present invention.

[0032] Figure 3 for Figure 2 Schematic diagram of the cross section along line AA.

[0033] Figure 4 for Figure 3 Schematic diagram of the enlarged portion B.

[0034] Figure 5 It is a schematic structural diagram of the reflective cup of Example 1 of the present invention at a viewing angle.

[0035] Figure 6 It is a schematic structural diagram of the reflective cup of Example 1 of the present invention at another viewing angle.

[0036] Figure 7 Schematic diagram of the matching connection between the elastic convex strip and the avoidance groove in Example 1 of the present invention.

[0037] Figure 8 It is a partial exploded view of the optical structure of Example 2 of the present invention.

[0038] Fig. 9 This is a partial exploded view of the track light of Example 3 of the present invention.

[0039] Fig.10 It is a partial schematic diagram of the internal structure of the lamp body of Example 3 of the present invention.

[0040] Fig.11 Schematic diagram of light path simulation of the track light of Example 3 and the existing track light.

[0041] Fig.12 It is a side view of the back cover of embodiment 3 of the present invention.

[0042] Fig.13 This is a schematic diagram of the structure of the track light of Example 3 of the present invention.

[0043] Fig.14 This is a schematic structural diagram of a lamp body according to Embodiment 3 of the present invention.

[0044] Markings in the figure:

[0045] 100-optical structure;

[0046] 1-reflective cup, 11-cup bottom, 12-cup wall, 13-accommodating cavity, 14-reflective gap, 15-reflective layer;

[0047] 111 - first opening, 112 - base plate, 113 - elastic boss, 114 - avoidance groove, 115 - second positioning block;

[0048] 121 - second opening, 122 - upper edge, 123 - limit block, mounting portion 124, mounting hole 125, 126 - reinforcing rib, 1121 - first base surface, 1122 - second base surface, 1131 - first positioning block;

[0049] 2-lens, 20-lens body, 21-light input part, 22-light output part;

[0050] 211 - light entrance, 212 - light entrance end, 221 - first convex ring, 222 - groove, 2121 - first positioning groove;

[0051] 223-first light emitting surface, 224-second light emitting surface, 225-light emitting groove;

[0052] 3-limiting member, 31-limiting body, 32-second convex ring, 33-slot, 311-through hole;

[0053] 4- Fasteners;

[0054] 5- Anti-glare ring;

[0055] M - Normal, Z 1 - Lens centerline, Z 2 -Center line of light source;

[0056] 200-lamp body, 300-back cover, 400-light source assembly, 500-power supply assembly, 600-connecting rod;

[0057] 201-housing, 202-mounting base, 203-heat sink, 204-heat sink, 205-heat sink cavity, 2011-light exit cavity, 2021-mounting surface, 2022-second positioning groove;

[0058] 401-light source board, 402-COB light source. DETAILED DESCRIPTION

[0059] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0060] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0061] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0063] Example 1

[0064] refer to Figure 1-Figure 7 The present embodiment provides an optical structure 100 for controlling the light emitted by a light source. The optical structure 100 includes a reflective cup 1, a lens 2 and a stopper 3. The stopper 3 fixes the lens 2 in the reflective cup 1. The reflective cup 1 includes a cup bottom 11 and a cup wall 12. The cup bottom 11 and the cup wall 12 surround a receiving cavity 13. The receiving cavity 13 is used to receive and install the lens 2. A first opening 111 and a second opening 121 are respectively provided in the cup bottom 11 and the cup wall 12. The reflective cup 1 is generally in a bowl-shaped structure. The first opening 111 and the second opening 121 are both circular openings, and the first opening 111 is smaller than the second opening 121.

[0065] The lens 2 includes a lens body 20, a light input portion 21 and a light output portion 22, wherein the light input portion 21 and the light output portion 22 are arranged at both ends of the lens body 20, wherein the light output portion 22 is provided with a first convex ring 221 extending outward, and the first convex ring 221 abuts against the cup wall portion 12. Specifically, the first convex ring 221 abuts against the upper edge 122 of the cup wall portion 12 and covers above the second opening 121, so that all the light entering the lens body 20 from the first opening 111 of the reflective cup 1 is emitted through the light output portion 22.

[0066] The light-entering portion 21 is provided with a light-entering port 211, and a columnar groove is formed in the light-entering portion 21 from the light-entering port 211 toward the light-exiting portion 22, and light enters the columnar groove from the light-entering port 211 and then enters the lens body 20. When the lens 2 is mounted on the reflective cup 1, the light-entering portion 21 abuts against the cup bottom 11, and the light-entering port 211 is connected to the first opening 111.

[0067] The stopper 3 is an annular structure, and the stopper 3 is fixedly connected to the reflective cup 1, so that the lens body 20 is limitedly installed in the accommodating cavity 13. It should be noted that a reflective gap 14 is formed between the lens body 20 and the cup wall 12 of the reflective cup 1. A reflective layer 15 is coated or pasted on the inner side of the cup wall 12 and the side of the cup bottom 11 facing the lens 2, and the light escaping from the lens 2 enters the reflective layer 15 through the reflective gap 14, and is reflected back to the lens body 20 through the reflective gap 14.

[0068] Further references Figure 4-Figure 7 The cup bottom 11 includes a base plate 112, and an elastic boss 113 and an avoidance groove 114 disposed on the base plate 112. The base plate 112 is provided with a first base surface 1121 and a second base surface 1122, and the avoidance groove 114 runs through the first base surface 1121 and the second base surface 1122. The elastic boss 113 is formed by protruding and extending from the first base surface 1121 toward the accommodating cavity 13, that is, one end of the elastic boss 113 is connected to the base plate 112, and the other end is separated from the base plate 112; and when the lens 2 is not in contact with the reflective cup 1, the elastic boss 113 is not squeezed, and the entirety thereof is located above the avoidance groove 114.

[0069] The light input portion 21 is provided with a light input end 212, which is arranged around the periphery of the light input port 211, and the light input end 212 abuts against the elastic boss 113. When the elastic boss 113 is squeezed by the light input end 212, the elastic boss 113 partially extends into the avoidance groove 114, and at this time, the elastic boss 113 also supports the light input end 212. Even if there is a dimensional tolerance between the height of the lens and the height of the accommodating cavity of the reflective cup, the elastic convex strip with an elastic reset function can support the lens in the axial direction, and the elastic convex strip cooperates with the limiter to limit the displacement of the lens in the axial direction.

[0070] In some embodiments, the light-entering end 212 of the lens 2 is a smooth annular plane, and the light-entering end 212 abuts against the elastic boss 113. In some embodiments, the elastic boss 113 is further provided with a first positioning block 1131, and the first positioning block 1131 is formed by continuing to bulge from the elastic boss 113 to the accommodating cavity 13 in an arc shape; correspondingly, the light-entering end 212 is provided with a first positioning groove 2121, and the first positioning block 1131 is matched and connected in the first positioning groove 2121. The second base surface 1122 is matched and connected to the lamp body, and when the optical structure 100 is installed on the lamp body, the second base surface 1122 is attached to the installation plane of the lamp body.

[0071] Combined with reference Figure 1 and Figure 3 The stopper 3 includes a stopper body 31 and a second convex ring 32. The second convex ring 32 is arranged inside the stopper body 31, that is, the second convex ring 32 extends from the stopper body 31 toward the inside. When the stopper 3 stops the lens 2 and installs it in the accommodating cavity 13 of the reflective cup 1, the second convex ring 32 fixes the first convex ring 221 on the upper edge 122 of the cup wall 12, that is, the first convex ring 221 of the lens 2 is fixed between the upper edge 122 of the cup wall 12 and the second convex ring 32 of the stopper 3.

[0072] Furthermore, the first convex ring 221 is provided with a groove 222, and the reflective cup 1 is provided with a stopper 123 on the upper edge 122 of the cup wall portion 12, and the stopper 123 is matched and connected in the groove 222. Specifically, the stopper 123 is engaged and connected in the groove 222, thereby limiting the rotation of the lens body 20 in the circumferential direction, so that the position of the lens 2 is fixed.

[0073] In this embodiment, the optical structure 100 further includes a fastener 4, which is a countersunk screw. The limiting body 31 is provided with a through hole 311, and the cup wall portion 12 is provided with a mounting portion 124 extending outward from the side wall, and the mounting portion 124 is provided with a mounting hole 125. After the limiting member 3 fixes the lens 2 in the accommodating cavity 13, the fastener 4 passes through the through hole 311 and is fixedly connected to the mounting hole 125, thereby fixing the reflective cup 1, the lens 2 and the limiting member 3 together.

[0074] The reflective cup is also provided with a plurality of reinforcing ribs 126 on the outer side of the cup wall 12. The reinforcing ribs 126 extend from the cup bottom 11 along the outer side of the cup wall 12 to the upper edge 122 of the cup wall 12. Moreover, the reinforcing ribs 126 are evenly distributed on the outer side of the cup wall 12, which can enhance the overall structural strength of the reflective cup 1, ensure that the reflection curve corresponding to the reflection layer of the cup wall 12 is not deformed, and abut against the lamp body.

[0075] like Figure 3 and Figure 4As shown, the cup bottom 11 of the lens 2 is mounted on the first base surface 1121, and the first base surface 1121 is a mounting plane with a normal line M; the lens body 20 has a lens center line Z 1 , lens center line Z 1 Parallel to the normal line M and perpendicular to the first base surface 1121 .

[0076] The light emitting portion 22 is further provided with a first light emitting surface 223, a second light emitting surface 224 and a light emitting groove 225. The light emitting groove 224 is formed by being recessed from the middle of the first light emitting surface 223 toward the light incident portion 21. The second light emitting surface 224 is located at the bottom of the light emitting groove 225. A plurality of lattice light emitting microstructures are provided on the second light emitting surface 224. The first light emitting surface 221 is a light emitting plane obliquely facing the light incident portion 21.

[0077] Along the center line Z 1 The direction is axial, and the stopper 3 fixes the lens 2 in the accommodating cavity 13 of the reflective cup 1. In the axial direction, the light-entering portion 21 abuts against the elastic boss 113 through the first positioning block 1131 and the first positioning groove 2121, and is installed on the first base surface 1121; at this time, the elastic boss 113 is squeezed by the light-entering portion 21, and partially extends into the avoidance groove 114, and also supports the light-entering portion 21 in the axial direction, that is, provides an upward supporting force for the lens body 20. The stopper 3 presses the first convex ring 221 of the light-exiting portion 22 against the upper edge 122 of the cup wall portion 12 through the second convex ring 32, and finally uses the fastener 4 to lock it, so that the lens 2 is installed as a whole in the accommodating cavity 13 in the axial direction, and the light-entering portion 21 and the light-exiting portion 22 of the lens 2 are respectively subjected to upward and downward pressure, and can be well compatible with the height tolerance, so that the lens body 20 does not loosen in the axial direction, ensuring that the position is fixed.

[0078] In the circumferential direction, the reflective cup 1 is provided with a limit block 123 on the upper edge 122 of the cup wall portion 12, and the limit block 123 is inserted into the matching groove 222, thereby preventing the lens body 20 from rotating in the circumferential direction, thereby ultimately ensuring that the installation position of the lens 2 is stable and avoiding problems of looseness and abnormal noise after assembly.

[0079] In the optical structure provided by this embodiment, the stopper in the form of an annular structure fixes the lens body to the reflective cup, so that the light entrance and light exit of the lens are respectively in contact with the bottom and wall of the cup, and the fasteners are used to fix the reflective cup, the lens and the stopper together, so that the lens body is axially limited in the accommodating cavity; in addition, the stopper on the upper edge of the cup wall is matched and connected with the groove of the first convex ring, and the lens body is circumferentially limited in the accommodating cavity while being positioned and installed. The modular optical structure first installs the lens in the reflective cup, and then installs it into the lamp body, so as to realize convenient and stable assembly of the lens.

[0080] Example 2

[0081] exist Figure 1-Figure 7 Based on reference Figure 8 The optical structure 100 of this embodiment includes a reflective cup 1, a lens 2, a stopper 3, a fastener 4 and an anti-glare ring 5, wherein the fastener 4 fixes the reflective cup 1, the lens 2 and the stopper 3 together, and the anti-glare ring 5 is detachably connected to the stopper 3. Specifically, the stopper 3 is provided with a card slot 33 on the stopper body 31, and the anti-glare ring 5 is provided with a card block 51. The card block 51 is snap-connected to the card slot 33, so that the anti-glare ring 5 is installed on the stopper 3, and the light after the light control processing of the lens 2 enters the anti-glare inner wall 52 of the anti-glare ring 5 in a stepped shape from the light exit portion 22, and finally exits to the outside.

[0082] Example 3

[0083] exist Figure 1-Figure 8 Based on the reference Figure 9-12 This embodiment provides a track light, including a lamp body 200, a back cover 300, a light source assembly 400, a power supply assembly 500 and a connecting rod 600, and the optical structure 100 of embodiment 1 or embodiment 2.

[0084] Among them, the lamp body 200 includes a shell 201, a mounting base 202 and a heat sink 203, the heat sink 203 is fixedly connected to the inner wall of the shell 201 and the outer wall of the mounting base 202, the shell 201 is provided with a light output cavity 2011, the mounting base 202 includes a mounting surface 2021 and a second positioning groove 2022 arranged on the mounting surface 2021, and the light source assembly 400 is fixedly connected to the mounting surface 2021.

[0085] The optical structure 100 is installed in the light-emitting cavity 2011, and the reflective cup 1 is provided with a second positioning block 115 facing the mounting surface 2021 at the bottom 11 of the cup, and the second positioning block 115 is matched and connected in the second positioning groove 2022. It can be seen that the reflective cup 1 of this embodiment can be used to install a lens on the one hand, and on the other hand, it is matched and tightly connected with the mounting base through the second base surface.

[0086] The light source assembly 400 includes a light source board 401 and a COB light source 402. The COB light source 402 is fixed to the light source board 401. Moreover, the light source board 401 is connected to the mounting surface 2021. Thus, the COB light source 402 is located in the first opening 111 of the reflector cup 1. The COB light source 402 has a light source center line Z 2 , the center line of the light source Z 2 The lens center line Z of the lens body 1 Overlap each other.

[0087] Fig.11 FIG. 1 is a schematic diagram of light path simulation of the track light of the present embodiment and the existing track light. Fig.11As shown, in the track light of 11A, the light source assembly is processed by the lens for light control, and then emitted to the outside through the anti-glare ring. Some of the light leaks out of the lens and is absorbed by the inner cavity of the lamp body, and is not reflected and emitted to the outside.

[0088] In the track light of this embodiment, as shown in 11B, the light emitted by the COB light source enters the lens body through the light inlet, and is emitted to the outside through the light emitting portion and the anti-glare ring arranged on the stopper. Part of the light overflows from the lens body, reaches the outside of the cup wall, is reflected by the reflective layer of the reflective cup, passes through the reflective gap, and re-enters the lens body, and finally is emitted to the outside through the light emitting portion and the anti-glare ring.

[0089] In the lamp body 200, the shell 201, the mounting base 202 and the heat sink 203 are integrally die-cast, and the lamp body 200 is provided with a heat sink 204 between adjacent heat sinks 203, the shell is provided with a heat sink cavity 205, the power supply component is installed in the heat sink cavity 205, and the connecting rod 600 is rotatably connected to the lamp body 200 to adjust the lighting angle.

[0090] The back cover 300 is provided with a heat dissipation through hole 301, and the back cover 300 is fixedly connected to the rear end of the lamp body 200. The heat dissipation through hole 301 and the heat dissipation groove 204 are arranged corresponding to each other, and the heat dissipation groove 204, the heat dissipation cavity 205 and the heat dissipation through hole 301 constitute a heat dissipation channel, which can promote the air flow inside the lamp body and take away the heat generated by the COB light source component from the mounting base and the heat sink.

[0091] The track light provided in this embodiment adopts a stable optical structure, and the center line of the COB light source accurately coincides with the lens center line of the lens body, so that the lens, reflective cup and anti-glare ring can effectively and stably control the light emitted by the COB light source, ensuring that the light shape and light direction meet the lighting requirements; the track light adopts a convection heat dissipation channel, which can effectively improve the heat dissipation efficiency and increase the service life of the track light.

[0092] The above contents are merely examples and illustrations of the structure of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims

1. An optical structure, characterized in that: include: The reflective cup comprises a cup bottom and a cup wall portion, wherein the cup bottom and the cup wall portion surround and form a receiving cavity, and the cup bottom and the cup wall portion are respectively provided with a first opening and a second opening communicating with the receiving cavity; A lens, comprising a lens body, and a light entrance portion and a light exit portion provided at both ends of the lens body, wherein the light exit portion is provided with a first convex ring abutting against the cup wall portion, the light entrance portion is provided with a light entrance port communicating with the first opening, and the light entrance portion abuts against the bottom of the cup; and A limiting member, which is an annular structure, is fixedly connected to the reflective cup, and limits the lens body in the accommodating cavity; Wherein, the first convex ring covers the second opening, and a reflective gap is provided between the lens body and the cup wall.

2. The optical structure according to claim 1, characterized in that: The bottom of the cup includes a substrate and an elastic boss and an avoidance groove arranged on the substrate. The substrate is provided with a first base surface and a second base surface relative to each other. The elastic boss is extended from the first base surface toward the accommodating cavity. The light incident portion is provided with a light incident end located at the outer periphery of the light incident port, the light incident end abuts against the elastic boss, and the elastic boss partially extends into the avoidance groove.

3. The optical structure according to claim 2, characterized in that: The elastic boss is provided with a first positioning block, the light incident end is provided with a first positioning groove, the first positioning block is matched and connected in the first positioning groove; the second base surface is matched and connected to the lamp body.

4. The optical structure according to claim 1, characterized in that: The limiting member includes a limiting body and a second convex ring arranged inside the limiting body, and the first convex ring is fixed between the upper edge of the cup wall and the second convex ring.

5. The optical structure according to claim 4, characterized in that: The first convex ring is provided with a groove, and the upper edge of the cup wall is provided with a limit block, and the limit block is matched and connected in the groove.

6. The optical structure according to claim 4, characterized in that: The optical structure also includes a fastener, the limiting body is provided with a through hole, the cup wall portion is extended outward to provide a mounting portion, the mounting portion is provided with a mounting hole, the fastener passes through the through hole and is fixedly connected to the mounting hole, and the reflective cup, the lens and the limiting member are fixedly connected together.

7. The optical structure according to claim 6, characterized in that: The optical structure also includes an anti-glare ring detachably connected to the limiting member, the limiting body is provided with a card slot, the anti-glare ring is provided with a card block, and the card block is buckled and connected to the card slot.

8. Track light, characterized in that, It comprises a lamp body, a back cover, a light source assembly, a power supply assembly and a connecting rod, and the optical structure according to any one of claims 1 to 7; The lamp body comprises a shell, a mounting base and a heat sink, the heat sink is fixedly connected to the inner wall of the shell and the outer wall of the mounting base, the shell is provided with a light emitting cavity, the mounting base comprises a mounting surface and a second positioning groove provided on the mounting surface, and the light source assembly is fixedly connected to the mounting surface; The optical structure is installed in the light output cavity, and a second positioning block facing the installation surface is provided at the bottom of the cup, and the second positioning block is matched and connected in the second positioning groove.

9. The track light according to claim 8, characterized in that: The light source assembly includes a light source board and a COB light source attached to the light source board, the light source board is attached to the mounting surface, the COB light source is entirely located in the first opening, and the center line of the COB light source coincides with the center line of the lens body; The light emitted by the COB light source enters the lens body through the light inlet, and is emitted to the outside through the light emitting portion and the anti-glare ring provided on the limiting member; Part of the light overflows to the outside of the cup wall, is reflected by the reflective cup, passes through the reflection gap, re-enters the lens body, and finally passes through the light exit portion and the anti-glare ring to the outside.

10. The track light according to claim 9, characterized in that: In the lamp body, the shell, the mounting base and the heat sink are integrally die-cast, and the lamp body is provided with heat dissipation grooves between adjacent heat sinks; The rear cover is provided with a heat dissipation through hole, the rear cover is fixedly connected to the rear end of the lamp body, and the housing is also provided with a heat dissipation cavity; the heat dissipation through hole and the heat dissipation groove are arranged corresponding to each other, and the heat dissipation groove, the heat dissipation cavity and the heat dissipation through hole constitute a heat dissipation channel; The power supply assembly is installed in the heat dissipation cavity, and the connecting rod is rotatably connected to the lamp body.

Images