Ceiling lamp with adjustable beam angle

Abstract

The utility model relates to the ceiling lamp of adjustable light beam angle, including the heat dissipation base that is equipped with the luminous body, lamp house, sliding sleeve, zoom lens and surface ring, the shell wall of lamp house is equipped with two spiral through slots of equidistribution, and the sliding sleeve is connected with the pin shaft, and the outside of lamp house rotatory sleeve joint has zoom sleeve, and the zoom sleeve is axially equipped with the guide straight slot that always interlocks with spiral through slot, and the pin shaft passes through spiral through slot and is placed into guide straight slot and constitutes linear sliding fit, and the surface ring extends the lower connecting ring, and the lower connecting ring is equipped with the screw joint fitting piece, and the lamp house extends the upper connecting ring that is mutually nested with the lower connecting ring, and the upper connecting ring is equipped with the screw joint fitting part, and through the cooperation of screw joint fitting part and screw joint fitting piece, make the surface ring quick assembly and disassembly connection in the bottom of lamp house, this ceiling lamp drives zoom lens to be far away or close to luminous body through zoom sleeve, thereby adjusting the light spot size and light divergence range of luminous body irradiation light.

Description

Technical Field

[0001] This utility model relates to the field of ceiling lights, specifically a ceiling light with an adjustable beam angle. Background Technology

[0002] Existing lighting fixture structures, such as the one described in Chinese Patent Document No. 201420201963.3 (application number 201420201963.3), mainly disclose a front cover, a sliding member, and a plano-convex lens. The sliding member is installed inside the front cover and can move along the axial direction of the front cover, allowing it to be positioned by friction with the front cover. The plano-convex lens is fixed on the inner wall of the sliding member. When the spotlight with this structure is zoomed, the assembler can only directly push and pull the sliding member to move back and forth relative to the front cover, thereby changing the focal length of the plano-convex lens. This zooming method has poor adjustment accuracy, and the sliding member is prone to shaking during the zooming process, causing the focal point of the plano-convex lens to shift and the illumination range of the light spot to deviate. Therefore, improvements to the existing lighting fixtures are needed. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned problems and provide a ceiling light with a simple and reasonable adjustable beam angle.

[0004] An adjustable beam angle ceiling light includes a heat dissipation base with a light-emitting element, a lamp housing, a sliding sleeve, a zoom lens, and a face ring. The heat dissipation base is connected to the top of the lamp housing, the sliding sleeve is slidably nested inside the lamp housing, the zoom lens is fixed on the sliding sleeve and placed below the light-emitting element, and the face ring is connected to the bottom of the lamp housing. The lamp housing has two or more circumferentially distributed spiral grooves on its shell wall. The sliding sleeve is connected to a pin that forms a spiral sliding fit with the spiral grooves. A zoom sleeve is rotatably sleeved on the outer side of the lamp housing. The zoom sleeve has a guide straight groove that always intersects with the spiral grooves on its axial direction. The pin passes through the spiral grooves and is placed in the guide straight groove to form a linear sliding fit. A lower connecting ring extends from the face ring, and the lower connecting ring is provided with a screw-fitting component. An upper connecting ring extends from the lamp housing and is nested with the lower connecting ring. The upper connecting ring is provided with a screw-fitting part. Through the engagement of the screw-fitting part and the screw-fitting component, the face ring can be quickly and easily connected to the bottom of the lamp housing.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the vertical distance between the highest and lowest positions of the spiral groove should be less than the length of the guide groove.

[0006] As a further embodiment, the zoom sleeve includes an upper connecting ring, and the heat dissipation base extends from the connecting ring with an outer ring sleeved on the outside of the lamp housing. The connecting ring is defined between the inner wall surface of the outer ring and the outer wall surface of the lamp housing. The guide groove is formed on the connecting ring, and the top of the guide groove is open.

[0007] As a further embodiment, the zoom sleeve also includes a lower zoom ring, and a stepped surface is provided on the lower outer side of the lamp housing. The zoom ring is defined between the bottom surface of the outer ring and the stepped surface, and the outer surface of the zoom ring is also provided with an anti-slip structure.

[0008] As a further embodiment, the screw-fitting component includes several screw-fitting protrusions, which are circumferentially distributed on the inner wall surface of the lower connecting ring; the screw-fitting part includes several rotating fastening grooves corresponding to the number of screw-fitting protrusions, which are circumferentially distributed on the outer wall surface of the upper connecting ring, and the screw-fitting protrusions and rotating fastening grooves are rotatably fastened together.

[0009] As a further embodiment, the rotary fastening groove includes a spiral support surface and a fastening inlet / outlet for the rotary fastening protrusion to enter the rotary fastening groove. The spiral support surface is provided with a locking protrusion on the side facing the fastening inlet / outlet, and the top surface of the locking protrusion is inclined along the direction of the spiral support surface.

[0010] As a further solution, two sets of spring clips are also included. The spring clips are provided with elongated connecting holes that extend along the axial direction of the face ring. Two mounting seats are provided on opposite sides of the face ring. The mounting seats are provided with threaded holes corresponding to the connecting holes. By passing screws through the connecting holes and the threaded holes, the spring clips and the face ring are assembled and connected.

[0011] As a further embodiment, the zoom lens includes a plano-convex lens and a light-transmitting lampshade integrated with the plano-convex lens. The plane of the plano-convex lens faces the light-emitting body and together with the light-transmitting lampshade, defines a focusing cavity into which the light-emitting body can be placed.

[0012] As a further embodiment, a support ring extends inward from the bottom end of the sliding sleeve, and the outer edge of the light-transmitting lampshade rests on the support ring.

[0013] As a further embodiment, the plano-convex lens has honeycomb-shaped protrusions on its flat surface.

[0014] The beneficial effects of this utility model are as follows: This utility model relates to an adjustable beam angle ceiling light. This ceiling light uses a zoom sleeve to move the zoom lens away from or closer to the light source, thereby adjusting the size of the light spot and the light dispersion range of the light emitted by the light source. The zoom sleeve is exposed and rotates on the lamp housing, which is convenient for the installer to operate. It does not require disassembling other parts of the ceiling light and can be adjusted at any time. The adjustment is convenient and practical. In addition, the sliding sleeve uses the spiral sliding method of the pin and the spiral groove to drive the zoom lens to move back and forth, and the linear sliding cooperation between the pin and the guide groove during the back and forth movement restricts the axial rotation, so that the zoom process is smooth and can reduce problems such as zoom lens shaking and focus shift. Furthermore, the ceiling light features a quick-change structure that allows for the replacement of the face ring, enabling assemblers to replace the round face ring with a square face ring according to the actual situation. This has the advantages of modular products, and the face ring is easy and quick to install and remove without the need for secondary fasteners, resulting in high assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the ceiling light structure in this utility model.

[0016] Figure 2 This is an exploded view of the ceiling light structure in this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the disassembled surface ring of this utility model.

[0018] Figure 4 This is a schematic diagram of the lamp housing and zoom sleeve structure in this utility model.

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the ceiling light in this utility model.

[0020] Figure 6 This is an exploded structural diagram of the lamp housing and face ring in this utility model.

[0021] Figure 7 for Figure 6 Enlarged structural diagram at point B.

[0022] Figure 8 This is an exploded structural diagram of the middle ring and spring clip of this utility model.

[0023] Figure 9 This is a cross-sectional view and a partially magnified structural diagram of the zoom lens in this utility model.

[0024] Figure 10 Schematic diagram of other heat dissipation fin structures in this utility model Figure 1 .

[0025] Figure 11Schematic diagram of other heat dissipation fin structures in this utility model Figure 2 . Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See Figures 1 to 8 As shown, the adjustable beam angle ceiling light includes a heat dissipation base 1 with a light-emitting body, a lamp housing 2, a sliding sleeve 3, a zoom lens 4, and a face ring 7. The heat dissipation base 1 is connected to the top of the lamp housing 2, the sliding sleeve 3 is slidably nested inside the lamp housing 2, the zoom lens 4 is fixed on the sliding sleeve 3 and placed below the light-emitting body, and the face ring 7 is connected to the bottom of the lamp housing 2. The lamp housing 2 has two or more circumferentially distributed spiral grooves 201 on its shell wall. The sliding sleeve 3 is connected to a pin 5 that forms a spiral sliding fit with the spiral grooves 201. A zoom sleeve 6 is rotatably sleeved on the outer side of the lamp housing 2. The zoom sleeve 6 has an axially formed guide groove 601 that always intersects with the spiral grooves 201. The pin 5 passes through the spiral grooves 201 and is placed in the guide groove 601 to form a linear sliding fit. This ceiling light uses a zoom sleeve to move the zoom lens closer to or further away from the light source, thereby adjusting the size of the light spot and the range of light dispersion. The zoom sleeve is exposed and rotates on the lamp housing, making it easy for installers to operate without disassembling other parts of the ceiling light. It can be adjusted at any time, making it convenient and practical. The specific zoom operation is as follows: The assembler rotates the zoom sleeve 6, and the guide groove 601 on the zoom sleeve 6 moves the pin 5 to slide along the spiral groove 201. The fixed spiral groove 201 will raise or lower the pin 5, thereby driving the sliding sleeve 3 and the zoom lens 4 on the sliding sleeve 3 to move back and forth, thus completing the zoom. During the back and forth movement, the pin 5 keeps sliding up and down in the guide groove 601, restricting axial rotation, making the zoom process smooth and reducing problems such as zoom lens shaking and focus shift.

[0028] The face ring 7 extends with a lower connecting ring 71, and the lower connecting ring 71 is provided with a screw-fitting part 8. The lamp housing 2 extends with an upper connecting ring 21 that is nested and fitted with the lower connecting ring 71. The upper connecting ring 21 is provided with a screw-fitting part 9. Through the engagement of the screw-fitting part 9 and the screw-fitting part 8, the face ring 7 can be quickly and easily connected to the bottom of the lamp housing 2.

[0029] This ceiling light features a quick-change structure that allows the face ring to be replaced, enabling assemblers to replace the round face ring with a square face ring according to the actual situation. It has the advantages of modular products, and the face ring is easy and quick to install and remove without the need for secondary fasteners, resulting in high assembly efficiency.

[0030] The vertical distance H1 between the highest and lowest positions of the spiral groove 201 is less than the length H2 of the guide groove 601. The vertical distance H1 of the spiral groove 201 determines the range of forward and backward movement of the sliding sleeve 3. Therefore, the length H2 of the guide groove 601 is greater than the vertical distance H1, so that the range of forward and backward movement is not limited by the length of the guide groove 601, and the sliding of the pin 5 can fully utilize the entire spiral groove 201.

[0031] When the pin 5 slides to the lowest position of the spiral groove 201, the bottom end of the sliding sleeve 3 is flush with the bottom end of the lamp housing 2, or the bottom end of the sliding sleeve 3 is slightly retracted into the lamp housing 2; so that the sliding sleeve 3 will not exceed the range of the lamp housing 2 during the zooming process, which facilitates the installation of structures such as the face cover at the front end of the lamp housing 2, and the ceiling light can still maintain the same volume after zooming.

[0032] The zoom sleeve 6 includes an upper connecting ring 61. The heat dissipation base 1 extends from the connecting ring 61 with an outer ring 10 that is fitted onto the outside of the lamp housing 2. The connecting ring 61 is defined between the inner wall surface of the outer ring 10 and the outer wall surface of the lamp housing 2. The guide groove 601 is formed on the connecting ring 61, and the top of the guide groove 601 is open. The outer ring 10 can cover the outside of the connecting ring 61, so that the structure of the guide groove 601 and the pin 5 will not be exposed, so that the appearance of the ceiling light remains complete, smooth, and more beautiful.

[0033] The zoom sleeve 6 also includes a lower zoom ring 62. A stepped surface 202 is provided on the lower outer side of the lamp housing 2. The zoom ring 62 is defined between the bottom surface of the outer ring 10 and the stepped surface 202. The outer surface of the zoom ring 62 is also provided with an anti-slip structure. The position of the zoom sleeve 6 is fixed by the outer ring 10 and the stepped surface 202, which restricts the zoom sleeve 6 from sliding along the axial direction. The anti-slip structure is mainly the concave and convex textures 621 on the surface of the zoom ring 62, so that the assembler will not slip when rotating the zoom sleeve 6.

[0034] Specifically: the screw-fit component 8 includes several screw-fit protrusions 81, which are evenly distributed circumferentially on the inner wall surface of the lower connecting ring 71; the screw-fit part 9 includes several rotating fastening grooves 91 corresponding to the number of screw-fit protrusions 81, which are evenly distributed circumferentially on the outer wall surface of the upper connecting ring 21, and the screw-fit protrusions 81 and the rotating fastening grooves 91 are rotatably fastened together; the assembly and disassembly are achieved through rotational fastening, which can improve the connection strength of the face ring 7, make the connection stable and reliable, easy to install and disassemble, and have high assembly efficiency.

[0035] The rotating fastening groove 91 includes a spiral support surface 92 and a fastening inlet / outlet 93 for the rotating fastening protrusion 81 to enter the rotating fastening groove 91. The spiral support surface 92 is provided with a locking protrusion 94 on the side facing the fastening inlet / outlet 93. The top surface of the locking protrusion 94 is inclined along the direction of the spiral support surface 92. Since the spiral support surface 92 is inclined, the face ring 7 can be gradually tightened during the screwing process. However, when subjected to the opposite force, the face ring 7 is prone to detach from the fastening inlet 93. Therefore, the locking boss 94 can limit the screwing protrusion 81 to prevent the screwing protrusion 81 from falling into the fastening inlet 93.

[0036] The bottom of the face ring 7 is integrally connected to a panel 72, which has a circular or square ring structure; this allows the panel 72 to be modularized, and different shapes of panels 72 can be assembled on the ceiling light according to different needs.

[0037] It also includes two sets of spring clips 15, each spring clip 15 having a connecting through hole 1001. Two mounting seats 73 are provided on opposite sides of the outer ring 7. Each mounting seat 73 has a threaded hole 731 corresponding to the connecting through hole 1001 and the threaded hole 731. By passing a screw through the connecting through hole 1001 and the threaded hole 731, the spring clip 15 and the ring 7 are assembled and connected. The spring clip 15 of this structure can be disassembled and assembled by fastening, allowing the face ring 7 to be produced separately, and one of the spring clips 15 can be easily disassembled and replaced if it is damaged.

[0038] The connecting through hole 1001 is a strip-shaped hole that extends along the axial direction of the face ring 7. The strip-shaped connecting through hole 1001 cooperates with the screw, allowing the spring clip 15 to be adjusted up and down to further adapt to the thickness of the ceiling.

[0039] The spring clip 15 includes an upper spring clip 11 and a lower spring clip 12, which are hinged to each other by a spring pin 13. A spring 14 is also sleeved on the spring pin 13, and the two ends of the spring 14 act on the upper spring clip 11 and the lower spring clip 12 respectively. The connecting through hole 1001 is formed on the lower spring clip 12. This structure of the spring clip 15 is prior art and will not be described in detail here. However, the difference lies in the fact that the lower spring clip 12 has inwardly bent flanges on both sides, which form guide rails 121. As flanges, they can improve the strength of the lower spring clip 12 and make it less prone to deformation and bending. The mounting base 73 has guide grooves 732 spaced apart from the width of the two guide rails 121. Through the sliding cooperation of the guide grooves 732 and the guide rails 121, the vertical up and down sliding of the spring clip 15 is restricted. This allows the spring clip 15 to slide vertically when adjusting its position without offset sliding, ensuring that the connecting through hole 1001 is kept in correspondence with the threaded hole 731.

[0040] The zoom lens 4 includes a plano-convex lens 41 and a light-transmitting lampshade 42 integrated with the plano-convex lens 41. The plane of the plano-convex lens 41 faces the light-emitting body and together with the light-transmitting lampshade 42, it defines a focusing cavity 401 into which the light-emitting body can be placed. This allows the zoom lens 4 to also function as a lampshade, which can reduce the number of assembly parts and improve production efficiency. In addition, the light-transmitting lampshade 42 also has the function of refracting light, which can increase the light diffusion range.

[0041] The sliding sleeve 3 has a support ring 31 extending inward from the bottom end, and the outer edge of the light-transmitting lamp cover 42 rests on the support ring 31. See Figure 9 As shown, the plano-convex lens 41 has honeycomb-shaped protrusions 411 on its plane; this structure makes each honeycomb-shaped protrusion 411 act as a convex lens, making the light more focused.

[0042] The inner wall of the outer ring 10 is provided with an internal thread 101, and the upper outer side of the lamp housing 2 is provided with an external thread 203. The heat dissipation base 1 is assembled and connected to the top of the lamp housing 2 through the threaded engagement of the internal thread 101 and the external thread 203.

[0043] In conjunction with the above structure, the assembly process of the ceiling light is as follows: The face ring 7 is connected to the bottom of the lamp housing 2 by a screw fastener. Then, the zoom lens 4 is placed into the sliding sleeve 3, so that the light-transmitting lamp cover 42 of the zoom lens 4 rests on the support ring 31. Then, the sliding sleeve 3 is nested into the lamp housing 2. The face ring 7 supports the sliding sleeve 3 to prevent it from sliding down out of the lamp housing 2. The pin hole 301 on the sliding sleeve 3, which is originally used to install the pin shaft 5, corresponds to the spiral through groove 201 of the lamp housing 2. Then, the zoom sleeve 6 is put into the lamp housing 2 from top to bottom until it abuts against the stepped surface 202. Then, the zoom sleeve 6 is rotated axially to adjust its position so that the guide straight groove 601 on it corresponds to the pin hole 301 through the spiral through groove 201. Then, the pin shaft 5 is installed into the pin hole 301, so that it passes through the spiral through groove 201 and the guide straight groove 601 at the same time. Finally, the heat dissipation base 1 is screwed into the top of the lamp housing 2 by the thread engagement of the internal thread part 101 and the external thread part 203, completing the assembly and fixing the zoom sleeve 6.

[0044] The heat dissipation base 1 is integrally made of metal material, and the outer surface of the heat dissipation base 1 is provided with longitudinally or / and transversely arranged heat dissipation fins 16; the heat dissipation fins 16 can achieve rapid heat dissipation of the light-emitting element, and the structure of the heat dissipation fins 16 can be referred to Figure 10 and Figure 11 As shown.

[0045] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A ceiling light with adjustable beam angle, comprising a heat dissipation base (1) with a light-emitting element, a lamp housing (2), a sliding sleeve (3), a zoom lens (4), and a face ring (7), wherein the heat dissipation base (1) is connected to the top of the lamp housing (2), the sliding sleeve (3) is slidably nested inside the lamp housing (2), the zoom lens (4) is fixed on the sliding sleeve (3) and placed below the light-emitting element, and the face ring (7) is connected to the bottom of the lamp housing (2), characterized in that: The lamp housing (2) has two or more circumferentially distributed spiral grooves (201) on its shell wall. The sliding sleeve (3) is connected to a pin (5) that forms a spiral sliding fit with the spiral grooves (201). The outside of the lamp housing (2) is rotatably sleeved with a zoom sleeve (6). The zoom sleeve (6) has an axially opened guide straight groove (601) that always intersects with the spiral grooves (201). The pin (5) passes through the spiral grooves (201) and is placed in the guide straight groove (601) to form a linear sliding fit. The face ring (7) extends with a lower connecting ring (71), and the lower connecting ring (71) is provided with a screw-fitting part (8). The lamp housing (2) extends with an upper connecting ring (21) that is nested and fitted with the lower connecting ring (71). The upper connecting ring (21) is provided with a screw-fitting part (9). Through the fit between the screw-fitting part (9) and the screw-fitting part (8), the face ring (7) can be quickly and easily attached to the bottom of the lamp housing (2).

2. The ceiling light with adjustable beam angle according to claim 1, characterized in that: The vertical distance (H1) between the highest and lowest positions of the spiral through groove (201) is less than the length (H2) of the guide straight groove (601).

3. The ceiling light with adjustable beam angle according to claim 1, characterized in that: The zoom sleeve (6) includes an upper connecting ring (61), and the heat dissipation base (1) extends an outer ring (10) corresponding to the connecting ring (61) and is sleeved on the outside of the lamp housing (2). The connecting ring (61) is defined between the inner wall surface of the outer ring (10) and the outer wall surface of the lamp housing (2). The guide groove (601) is opened on the connecting ring (61) and the top of the guide groove (601) is open.

4. The ceiling light with adjustable beam angle according to claim 3, characterized in that: The zoom sleeve (6) also includes a lower zoom ring (62). The lower outer side of the lamp housing (2) is provided with a stepped surface (202). The zoom ring (62) is limited between the bottom surface of the outer ring (10) and the stepped surface (202). The outer surface of the zoom ring (62) is also provided with an anti-slip structure.

5. The ceiling light with adjustable beam angle according to claim 1, characterized in that: The screw-fitting component (8) includes several screw-fitting protrusions (81), which are evenly distributed circumferentially on the inner wall surface of the lower connecting ring (71); the screw-fitting part (9) includes several rotating fastening grooves (91) corresponding to the number of screw-fitting protrusions (81), which are evenly distributed circumferentially on the outer wall surface of the upper connecting ring (21), and the screw-fitting protrusions (81) and the rotating fastening grooves (91) are rotated and fastened together.

6. The ceiling light with adjustable beam angle according to claim 5, characterized in that: The rotating fastening groove (91) includes a spiral support surface (92) and a fastening inlet / outlet (93) for the rotating fastening protrusion (81) to enter the rotating fastening groove (91). The spiral support surface (92) is provided with a locking protrusion (94) on the side facing the fastening inlet / outlet (93). The top surface of the locking protrusion (94) is inclined along the direction of the spiral support surface (92).

7. The ceiling light with adjustable beam angle according to claim 1, characterized in that: It also includes two sets of spring clips (15), each spring clip (15) having an elongated connecting through hole (1001) extending along the axial direction of the face ring (7). Two mounting seats (73) are provided on opposite sides of the face ring (7), and the mounting seats (73) have corresponding threaded holes (731). By passing screws through the connecting through hole (1001) and the threaded hole (731), the spring clips (15) and the face ring (7) are assembled and connected.

8. The ceiling light with adjustable beam angle according to claim 1, characterized in that: The zoom lens (4) includes a plano-convex lens (41) and a light-transmitting lampshade (42) integrated with the plano-convex lens (41). The plane of the plano-convex lens (41) faces the light-emitting body and together with the light-transmitting lampshade (42) defines a focusing cavity (401) into which the light-emitting body can be placed.

9. The ceiling light with adjustable beam angle according to claim 8, characterized in that: The sliding sleeve (3) has a support ring (31) extending inward from the bottom end, and the outer edge of the light-transmitting lampshade (42) rests on the support ring (31).

10. The ceiling light with adjustable beam angle according to claim 8, characterized in that: The plano-convex lens (41) has honeycomb-shaped protrusions (411) on its plane.

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