Ceiling light zoom adjustment structure

Abstract

This utility model relates to a zoom adjustment structure for a ceiling light, comprising a heat dissipation base with a light-emitting element, a lamp housing, a sliding sleeve, and a zoom lens. The heat dissipation base is connected to the top of the lamp housing, the sliding sleeve is slidably nested inside the lamp housing, and the zoom lens is fixed on the sliding sleeve and positioned below the light-emitting element. The lamp housing has two or more circumferentially distributed spiral grooves on its wall. A pin is connected to the sliding sleeve to form a spiral sliding fit with the spiral grooves. The zoom sleeve is rotatably fitted onto the outer side of the lamp housing. The zoom sleeve has an axially formed guide groove that always intersects with the spiral grooves. The pin passes through the spiral groove and is placed in the guide groove to form a linear sliding fit. This ceiling light uses the zoom sleeve to move the zoom lens closer to or further away from the light-emitting element, thereby adjusting the size of the light spot and the light diffusion range of the light emitted by the light-emitting element.

Description

Technical Field

[0001] This utility model relates to the field of ceiling lights, specifically a ceiling light zoom adjustment structure. 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 utility model is to solve the above-mentioned existing problems and provide a simple and reasonable ceiling light zoom adjustment structure.

[0004] The ceiling light zoom adjustment structure includes a heat dissipation base with a light-emitting element, a lamp housing, a sliding sleeve, and a zoom lens. 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. The lamp housing wall has two or more circumferentially distributed spiral grooves. The sliding sleeve is connected to a pin that forms a spiral sliding fit with the spiral grooves. The zoom sleeve is rotatably sleeved on the outer side of the lamp housing. The zoom sleeve has an axially formed guide groove that always intersects with the spiral grooves. The pin passes through the spiral groove and is placed in the guide groove to form a linear sliding fit.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] 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.

[0007] As a further embodiment, when the pin slides to the lowest position of the spiral groove, the bottom end of the sliding sleeve is flush with the bottom end of the lamp housing, or the bottom end of the sliding sleeve is slightly recessed into the lamp housing.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] As a further embodiment, the plano-convex lens has honeycomb-shaped protrusions on its flat surface.

[0013] As a further solution, an internal thread is provided on the inner wall surface of the outer ring, and an external thread is provided on the upper outer side of the lamp housing. The heat dissipation base is assembled and connected to the top of the lamp housing through the threaded engagement of the internal thread and the external thread.

[0014] As a further embodiment, the heat dissipation base is integrally made of metal material, and the outer surface of the heat dissipation base is provided with longitudinally or / and transversely arranged heat dissipation fins.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model relates to a ceiling light zoom adjustment structure. 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 light diffusion 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.

[0017] 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. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the ceiling light structure in this utility model.

[0019] Figure 2 This is an exploded view of the ceiling light structure in this utility model.

[0020] Figure 3 This is a schematic diagram of the lamp housing and zoom sleeve structure in this utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the ceiling light in this utility model.

[0022] Figure 5 This is a cross-sectional view and a partially magnified structural diagram of the zoom lens in this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1 to 4 As shown, the ceiling light zoom adjustment structure includes a heat dissipation base 1 with a light-emitting body, a lamp housing 2, a sliding sleeve 3, and a zoom lens 4. 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. Two axially symmetrical spiral grooves 201 are opened on the wall of the lamp housing 2. A pin 5 is connected to the sliding sleeve 3 to form 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. A guide straight groove 601 is axially opened on the zoom sleeve 6, which 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] See Figure 5As 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.

[0034] 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.

[0035] In conjunction with the above structure, the assembly process of the ceiling light is as follows:

[0036] Place the zoom lens 4 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, nest the sliding sleeve 3 into the lamp housing 2 (before this, the bottom of the lamp housing 2 is connected to the face ring 7, which supports the sliding sleeve 3 and prevents it from sliding down out of the lamp housing 2). Align the pin hole 301 on the sliding sleeve 3, which is originally used to install the pin shaft 5, with the spiral through groove 201 of the lamp housing 2. Then, slide the zoom sleeve 6 from top to bottom onto the outside of the lamp housing 2 until it abuts against the stepped surface 202. Then, rotate the zoom sleeve 6 axially to adjust its position so that the guide straight groove 601 on it passes through the spiral through groove 201 and aligns with the pin hole 301. Then, install the pin shaft 5 into the pin hole 301, so that it passes through both the spiral through groove 201 and the guide straight groove 601. Finally, use the threaded engagement of the internal thread part 101 and the external thread part 203 to screw the heat dissipation base 1 into the top of the lamp housing 2, completing the assembly and fixing the zoom sleeve 6.

[0037] 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 11; the heat dissipation fins 11 can achieve rapid heat dissipation of the light-emitting body.

[0038] 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 zoom adjustment structure, comprising a heat dissipation base (1) with a light-emitting element, a lamp housing (2), a sliding sleeve (3), and a zoom lens (4), 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), and the zoom lens (4) is fixed on the sliding sleeve (3) and placed below the light-emitting element, 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 formed 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.

2. The ceiling lamp zoom adjusting structure 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 lamp zoom adjusting structure according to claim 1, characterized in that: 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).

4. The ceiling lamp zoom adjusting structure 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.

5. The ceiling lamp zoom adjusting structure according to claim 4, 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. 6.The ceiling lamp zoom adjusting structure 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.

7. The ceiling lamp zoom adjusting structure according to claim 6, 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).

8. The ceiling light zoom adjustment structure according to claim 6, characterized in that: The plano-convex lens (41) has honeycomb-shaped protrusions (411) on its plane. 9.The ceiling lamp zoom adjusting structure according to claim 4, characterized in that: 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). Through the threaded engagement of the internal thread (101) and the external thread (203), the heat dissipation base (1) is assembled and connected to the top of the lamp housing (2). 10.The ceiling lamp zoom adjusting structure according to claim 1, characterized in that: 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 (11).

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