Recessed lamp
By designing the optical axis of the recessed light to form an acute angle with the central axis, and combining it with a rotatable lamp tube and optical module, the problem of limited angle adjustment of the recessed light is solved, efficient polarized lighting effects and multi-angle adjustment are achieved, and the flexibility and lighting accuracy of the recessed light are improved.
Patent Information
- Application Number
- CN202511073621.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-09-26
AI Technical Summary
Existing recessed lights have limited angle adjustment, resulting in poor polarized lighting effects, and traditional improvement solutions increase structural complexity or cause glare problems.
A recessed lamp is designed. By forming an acute angle between the lamp tube and the shaft seat, combined with the tilt setting of the optical module and the rotatable lamp tube structure, the light can be collimated or nearly collimated. Multi-angle adjustment can be achieved through the cooperation of the shaft seat and the mounting ring.
It achieves precise deflected emission of light, reduces light divergence and loss, and meets high-precision lighting needs. At the same time, it has a simple structure and is easy to install, which improves the flexibility and user experience of lighting.
Smart Images
Figure CN120701938A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of lamps, and in particular to a recessed lamp suitable for polarized lighting. Background Art
[0002] As a commonly used lighting device, recessed lights are widely used in commercial spaces, home environments and other scenarios. This type of lamp is generally embedded in the mounting holes opened in the mounting plate. Due to the limitations of the mounting structure, the rotation angle of existing recessed lights is often small. The rotation angle of products on the market is generally less than 30 degrees. In addition, because the internal optical structure adopts a fixed or coaxial optical path design, it can only be adjusted to the same rotation angle as the lamp tube. The light emission direction cannot be adjusted to a larger angle. Otherwise, it is easy to be blocked by the mounting structure, making it difficult to meet the lighting needs of different scenarios. There are different improvements to recessed lights. On the one hand, some designers add a polarizing structure inside the lamp, but this will make the lamp structure complicated, increase the difficulty of assembly and production costs, and also increase light loss. On the other hand, some designers expand the light outlet of the lamp or expose the optical structure outside the mounting structure, but this will cause glare due to direct light from the recessed light, seriously affecting the user experience.
[0003] Therefore, those skilled in the art are committed to developing a lamp that can be used for polarized lighting while maintaining the original embedded installation structure and has a large light-emitting surface to ensure efficient light emission. Summary of the Invention
[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this application is the problem that the existing downlights have limited angle adjustment, resulting in poor polarized lighting effects.
[0005] To achieve the above-mentioned purpose, the present application provides a recessed lamp, comprising: a lamp tube, which has a central axis, and comprises a shell, a mounting cavity is provided in the shell, and a light outlet is provided at the end of the shell; an optical module, which comprises a bracket and a light source and a lens mounted on the bracket, wherein the bracket is fixedly mounted in the mounting cavity, the lens is arranged in the light emitting direction of the light source and comprises an optical axis passing through the light source and the lens; an axle seat, which is rotatably connected to the lamp tube, so that the lamp tube rotates along a rotation axis relative to the axle seat; in a rotation section perpendicular to the rotation axis and passing through the central axis, the optical axis and the central axis form a first deviation angle, and the first deviation angle is an acute angle.
[0006] In one embodiment, the lamp tube includes a heat sink, which is disposed at one end of the lamp tube, adjacent to the mounting cavity and abutting the light source.
[0007] In one embodiment, the light source includes a circuit board and an LED chip arranged on the circuit board. A light source mounting groove suitable for mounting the circuit board is provided on the first end face of the bracket, and a through hole is provided in the middle of the light source mounting groove for light from the LED chip to pass through.
[0008] In one embodiment, the lens includes a positioning block protrudingly formed on the outer wall of the lens, and the bracket includes a first cup body, and a corresponding snap-in groove for the positioning block to be adapted and installed is provided on the inner wall of the first cup body.
[0009] In one embodiment, the mounting cavity is asymmetrical with respect to the central axis, and a mounting surface is provided in the mounting cavity at an angle relative to one side of the central axis. The optical module is installed in the shell at an angle along the mounting surface, wherein one side of the bracket is positioned to abut against the inner wall of the shell on the same side of the mounting surface.
[0010] In one possible implementation manner, the lens is an internal total reflection lens, and the light from the light source is emitted out of the lamp tube in a collimated, nearly collimated, or cross-emission manner after passing through the lens.
[0011] In one embodiment, the lens includes a first light incident surface intersecting the optical axis and a second light incident surface surrounding the edge of the first light incident surface, and also includes an internal total reflection surface arranged on the outside of the lens relative to the optical axis, the internal total reflection surface and the second light incident surface are arranged corresponding to each other, and are used to totally reflect the light entering the second light incident surface. The lens is provided with a first light emitting surface corresponding to the first light incident surface and a second light emitting surface corresponding to the internal total reflection surface along the light emitting direction.
[0012] In one embodiment, along the rotational cross section, the angles between the contours of the internal total reflection surfaces of the lens on both sides of the optical axis and the optical axis are equal or unequal; wherein, when the angles are unequal, the angle between the internal total reflection surface on the side closer to the shell and the optical axis is smaller.
[0013] In one embodiment, a second cup body is provided in the lamp tube and is connected to the shell. The second cup body includes an annular wall and is hollow. The second end face of the bracket away from the light source abuts against one end of the second cup body, and the light outlet of the shell is flush with the other end of the second cup body.
[0014] In one embodiment, the first deflection angle ranges from 15° to 30°.
[0015] In one embodiment, a second deflection angle formed by a wall surface of the second cup body farther from the light source and the central axis in the rotational cross section is greater than or equal to a first deflection angle formed by the optical axis and the central axis.
[0016] In one embodiment, an elastic clamping member is provided on the shaft seat, which includes a clamping block protruding radially outward from the shaft seat and an operable pressing end, wherein the pressing end is suitable for linking the clamping block to move toward or away from the central axis.
[0017] In one possible implementation manner, the shaft seat is configured as a rotating structure centered on the central axis, and a mounting ring is sleeved on the outer side of the shaft seat, and the shaft seat can rotate along the inner side of the mounting ring.
[0018] In one possible embodiment, a sliding groove is opened on the outer side of the shaft seat, and a limit block is provided in the sliding groove. Along the circumference of the shaft seat, the limit block moves between the two end surfaces of the sliding groove in a restricted manner. The limit block extends to the outside of the sliding groove, and a limit rib is formed on the inner wall of the mounting ring. The limit block is interfered with by the limit rib as it rotates.
[0019] The present application also discloses a lighting adjustment method for a recessed lamp, which adopts the above-mentioned recessed lamp and includes the following steps: opening a mounting hole on the mounting plate, installing the recessed lamp into the mounting hole along the direction of the central axis, and connecting the shaft seat to the mounting plate; when the lamp tube is in the initial position, the light outlet faces the extension direction of the central axis, and the emitted light is inclined to the first side at a first deflection angle; operating the lamp tube to rotate it along the rotation axis relative to the shaft seat, when the lamp tube rotates along the first direction, the tail end of the lamp tube swings toward the first side, and the angle of the emitted light is offset by the first deflection angle and the rotation angle of the lamp tube, and when the lamp tube rotates along the second direction, the tail end of the lamp tube swings toward the second side opposite to the first side, and the angle of the emitted light is superimposed by the first deflection angle and the rotation angle of the lamp tube.
[0020] Technical effects of this application:
[0021] (1) This application realizes the precise deflection of light at a large deflection angle by designing a first deflection angle between the optical axis and the central axis. The light is emitted in a collimated or nearly collimated manner, which reduces the divergence and loss of light, and can accurately focus the light on the target, meeting the needs of high-precision lighting scenes.
[0022] (2) The present application has a simple structure and is easy to install. The lamp tube can be rotated relative to the shaft seat. Combined with the rotation of the shaft seat and the mounting ring, multi-angle adjustment of the lighting direction is achieved, thereby improving the flexibility of the recessed light.
[0023] It should be understood that the teachings of this application do not necessarily achieve all of the beneficial effects described above, but that specific technical solutions can achieve specific technical effects, and other embodiments of this application can also achieve beneficial effects not mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an illustrative and non-limiting manner, in which:
[0025] Figure 1 It is a schematic cross-sectional structural diagram of an embodiment of the downlight of the present application.
[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the downlight of the present application.
[0027] Figure 3 It is a structural schematic diagram of a lens of an embodiment of the downlight of the present application.
[0028] Figure 4 This is a schematic diagram of the structure of the bracket of an embodiment of the recessed light of the present application. Figure 1 .
[0029] Figure 5 This is a schematic diagram of the structure of the bracket of an embodiment of the recessed light of the present application. Figure 2 .
[0030] Figure 6 This is another structural schematic diagram of a lens of an embodiment of the downlight of the present application.
[0031] Figure 7 It is a structural schematic diagram of the shaft seat of an embodiment of the recessed lamp of the present application.
[0032] Figure 8 It is a structural schematic diagram of a mounting ring of an embodiment of the recessed light of the present application.
[0033] Figure 9 It is a schematic diagram of the exploded structure of an embodiment of the recessed lamp of the present application.
[0034] Figure 10 This is a schematic diagram of the state change structure of the recessed lamp of the present application, wherein (a) is when the lamp tube rotates along the first direction, and (b) is when the lamp tube rotates along the second direction.
[0035] Wherein: 1 lamp tube, 11 shell, 12 installation cavity, 13 light outlet, 14 radiator, 15 installation surface, 2 optical module, 21 bracket, 211 light source installation slot, 212 wiring slot, 213 first cup body, 214 snap-in slot, 2141 entry section, 2142 sliding section, 215 protrusion, 22 light source, 221 circuit board, 222 LED chip, 23 lens, 231 positioning block, 2311 guide surface, 2312 stop surface, 201 first light incident surface, 202 second light incident surface, 203 internal total reflection surface, 204 1 light-emitting surface, 205 second light-emitting surface, 206 transition surface, 3 axis seat, 31 third cup body, 32 axis hole, 33 boss, 34 slide groove, 35 limit block, 36 elastic clamping member, 361 clamping block, 362 pressing end, 4 second cup body, 5 mounting ring, 51 annular groove, 52 limiting rib, 53 elastic buckle, 54 abutting annular surface, 6 wire clamp, 7 rotating shaft member, L1 center axis, L2 optical axis, L3 rotating axis, α first deflection angle, β second deflection angle, 101 first side, 102 second side, D1 first direction, D2 second direction. DETAILED DESCRIPTION
[0036] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.
[0037] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless otherwise inconsistent.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0039] like Figure 1 FIG. 1 is an embodiment of the recessed light provided by the present application, showing its longitudinal cross-sectional structure. Figure 2 Shown is a schematic diagram of the three-dimensional structure of the recessed light.
[0040] In this embodiment, the downlight includes a lamp tube 1, an optical module 2, and a shaft base 3. The lamp tube 1 has a central axis L1. Its housing 11 is provided with a mounting cavity 12. A light outlet 13 at the end of the housing 11 provides a channel for light to exit. The optical module 2 includes a bracket 21, a light source 22, and a lens 23, which are mounted on the bracket 21. The bracket 21 is fixedly mounted within the mounting cavity 12. Light emitted by the light source 22 exits through the lens 23, and an optical axis L2 passes through the light source 22 and the lens 23. The optical axis L2 is defined as the centerline passing through the light source 22. For a symmetrically designed lens 23, the optical axis L2 is the axis of symmetry between the light source 22 and the lens 23. The shaft base 3 is rotatably connected to the lamp tube 1, allowing the lamp tube 1 to rotate relative to the shaft base 3 along a rotation axis L3. In a rotational section perpendicular to the rotation axis L3 and passing through the central axis L1, the optical axis L2 forms a first angle α with the central axis L1, which is an acute angle.
[0041] This embodiment employs a tilted optical module 2, creating an acute angle between the optical axis L2 and the central axis L1 of the lamp tube 1, thereby achieving oblique light emission. For example, when this recessed light is installed in a commercial display cabinet, light is deflected at a preset first deflection angle α. This, combined with the inherent rotation angle of the lamp tube 1, eliminates the need for additional auxiliary optical components, achieving precise, wide-angle polarized illumination. This overcomes the limitations of the mounting structure and eliminates light blocking, meeting the lighting needs of specific scenarios.
[0042] The light source 22 includes a circuit board 221 and an LED chip 222 mounted on the circuit board 221. The light source mounting groove 211 on the first end surface of the bracket 21 is adapted to mount the circuit board 221. A through-hole in the center of the light source mounting groove 211 allows light from the LED chip 222 to pass through. The lamp tube 1 includes a heat sink 14, which is located at one end of the lamp tube 1, adjacent to the mounting cavity 12 and abutting the light source 22. The heat sink 14 effectively dissipates heat generated by the light source 22 during operation, preventing overheating that could affect the light source 22's lifespan and luminous efficiency.
[0043] The lens 23 is firmly connected to the bracket 21 to prevent the lens 23 from loosening or shifting during use, thereby ensuring the stability of the light emission angle. Figure 3 The outer wall of the lens 23 is provided with a protruding positioning block 231, as shown in FIG. Figure 4 The bracket 21 includes a first cup body 213, and a corresponding snap-in groove 214 for the positioning block 231 to be adapted and installed is provided on the inner wall of the first cup body 213. Furthermore, the snap-in groove 214 is L-shaped, specifically including an entrance section 2141 and a sliding section 2142 that are connected to each other. The entrance section 2141 is connected to the end face of the first cup body 213, and the positioning block 231 of the lens 23 can be adaptively embedded in the snap-in groove 214 and snap-in fixed in the sliding section 2142. This connection method makes the installation and removal of the lens 23 more convenient, while ensuring the firmness of the connection between the lens 23 and the bracket 21. For example, when installing the lens 23, the positioning block 231 is slid in along the entrance section 2141, and then the lens 23 is relatively rotated so that the positioning block 231 is pushed into the sliding section 2142 to achieve snap-in fixation. No additional fixing parts are required, making installation convenient. Preferably, along the installation direction, an inclined guide surface 2311 is provided at the front end of the positioning block 231, a stop surface 2312 is provided at the rear end, and a protrusion 215 is provided near the end of the sliding section 2142. During installation, the guide surface 2311 can slide along the protrusion 215, and then the stop surface 2312 and the protrusion 215 are counteracted to prevent the positioning block 231 from detaching after installation.
[0044] In one embodiment of the present application, the deviation angle of the optical axis L2 of the lens 23 is mainly determined by the installation position of the optical module 2. The mounting cavity 12 is asymmetrical with respect to the central axis L1, and a mounting surface 15 is provided at least on one side of the mounting cavity 12 relative to the central axis L1, and the mounting surface 15 forms an acute angle with respect to the plane perpendicular to the central axis L1, and the mounting surface 15 can extend from the inner wall of one side of the shell 11 to intersect with the central axis L1. The optical module 2 is installed in the shell 11 at an angle along the mounting surface 15, wherein one side of the bracket 21 is positioned to abut against the inner wall of the shell 11 on the same side of the mounting surface 15, and the other side of the bracket 21 extends in the mounting cavity 12 toward the light outlet 13. By the inclined setting of the mounting surface 15, while ensuring a compact structure, it is ensured that the optical axis L2 forms a preset first deviation angle α with the central axis L1.
[0045] Further, if Figure 5 As shown, the first end surface of the bracket 21 is also provided with a wiring groove 212, which is connected to the installation cavity 12 and the light source installation groove 211. The wiring groove 212 is provided on the first end surface of the bracket 21, which is connected to the installation cavity 12 and the light source installation groove 211, providing a reasonable arrangement channel for the wires that power the light source, avoiding the influence of the mess of wires on the installation and stability of the components inside the downlight. Figure 1 and Figure 9 In the implementation scheme, the radiator 14 is provided with a through hole for the wire to pass through the installation cavity 12, and a wire clamp 6 for fixing the wire is provided on the outside of the radiator 14. Two wiring grooves 212 are provided on the end face of the bracket 21, for the two wires to connect to the positive and negative poles of the circuit board 221 respectively. The wires are neatly arranged through the wiring grooves 212 without interfering with other components, and are also convenient for subsequent maintenance and inspection.
[0046] In one embodiment of the present application, lens 23 is a total internal reflection lens. After passing through lens 23, light from light source 22 is emitted out of lamp tube 1 in a collimated, nearly collimated, or cross-emission manner. A corresponding lens structure can be selected for light distribution according to actual needs. For example, a TIR lens can be selected, which has efficient focusing and collimation functions, allowing light to be emitted in a more concentrated manner, improving the brightness and accuracy of the lighting. In addition, the collimated light can reduce divergence, ensuring that the target area receives sufficient light intensity.
[0047] like Figure 1 and Figure 3 In the embodiment shown in FIG. 2 , a structure of the lens 23 is shown. Figure 6Another structure of the lens 23 is shown in the embodiment. The lens 23 of the above embodiment includes a first light incident surface 201 intersecting with the optical axis L2 and a second light incident surface 202 surrounding the edge of the first light incident surface 201. The first light incident surface 201 and the second light incident surface 202 surround the light source 22. The lens 23 also includes an internal total reflection surface 203 disposed on the outer side of the lens 23 relative to the optical axis L2. When the lens 23 is a rotational structure, the internal total reflection surface 203 is a rotational curved surface on the outer side of the lens 23, and the second light incident surface 202 is a rotational curved surface surrounding the first light incident surface 201. The internal total reflection surface 203 and the second light incident surface 202 of the lens 23 are disposed correspondingly and are used to totally reflect light entering the second light incident surface 202. The internal total reflection surface 203 is tilted outward relative to the optical axis L2. The lens 23 is provided with a first light exit surface 204 corresponding to the first light incident surface 201 and a second light exit surface 205 corresponding to the internal total reflection surface 203 along the light exit direction. The first light-incident surface 201 and the second light-incident surface 202 of the lens 23 receive light from the light source, the total internal reflection surface 203 totally reflects the light entering from the second light-incident surface 202, the first light-emitting surface 204 emits the light from the first light-incident surface 201, and the second light-emitting surface 205 emits the light from the total internal reflection surface 203. The lens 23 of the above embodiment can control the distribution of the small-angle light and the large-angle light emitted by the light source 22 separately, so that the light is more concentrated on the target area along the optical axis L2, and the lighting efficiency is improved.
[0048] Furthermore, in one embodiment of the lens 23, its structure is as follows Figure 3 As shown. The first light incident surface 201 of the lens 23 is a plano-convex surface, and is composed of micro-lenses distributed in a grid or honeycomb pattern. The first light incident surface 201 is set as a plano-convex surface, which can focus the light from the light source, and the use of a micro-lens structure can further homogenize the light, making the light after passing through the first light incident surface 201 more uniform and reducing the difference in brightness of the light spot. The first light emitting surface 204 is a plano-convex surface, and optionally, the first light emitting surface 204 is a Fresnel plano-convex surface. The Fresnel lens is light and thin, and has a good focusing effect. It can reduce the thickness and weight of the lens while ensuring the focusing performance, which is beneficial to the miniaturization and lightweight design of the recessed lamp, so that the lens 23 of the recessed lamp of the present application can be completely hidden in the lamp tube 1. As shown Figure 1 As shown, the first light emitting surface 204 is recessed within the second light emitting surface 205 , and the first light emitting surface 204 and the second light emitting surface 205 are connected via a transition surface 206 .
[0049] Optionally, the total internal reflection surface 203 includes a plurality of adjacently connected sub-reflecting surfaces, which are sequentially spliced into a scale-like surface. The scale-like sub-reflecting surfaces can regulate the light incident from the second light incident surface 202, thereby achieving precise control of the direction of the light after total reflection, reducing light scattering, and achieving more uniform illumination distribution.
[0050] When observing along the rotational cross section, the included angles between the contours of the internal total reflection surfaces 203 on both sides of the lens 23 relative to the optical axis L2 and the optical axis L2 are equal or unequal. When the internal total reflection surface 203 is a curved surface, the included angles between the tangent lines formed by the corresponding positions of the internal total reflection surfaces 203 on both sides relative to the optical axis L2 and the optical axis L2 are equal or unequal. When the included angles are unequal, as Figure 6 The figure shows another embodiment of the lens 23 of the present application, and the angle between the internal total reflection surface 203 on the side closer to the shell 11 (the right side in the figure) and the optical axis L2 is smaller, so that the outgoing light after reflection on this side is more deflected, and a larger illumination range is achieved in the case of single-sided lighting.
[0051] In one embodiment of the present application, a second cup 4 is provided within the lamp tube 1 and is matingly connected to the housing 11. The second cup 4 comprises an annular wall surface and is hollow. Light emitted from the lens 23 passes through the cavity enclosed by the second cup 4. The second end surface of the bracket 21, which is away from the light source 22, abuts against one end of the second cup 4, and the light outlet 13 of the housing 11 is flush with the other end of the second cup 4. The second cup 4 provides additional support and positioning for the bracket 21, thereby enhancing the installation stability of the optical module 2 within the lamp tube 1. Furthermore, the second cup 4 blocks stray light from the light emitted by the optical module 2 through its wall surface, thereby reducing glare. Furthermore, along the rotational cross-sectional observation angle, the wall surface of the second cup 4 farther from the light source 22, i.e., the side corresponding to the oblique direction of light emission, forms a second deflection angle β with the central axis L1 that is greater than or equal to the first deflection angle α formed between the optical axis L2 and the central axis L1. This arrangement enables the smooth emission of collimated or nearly collimated light after light distribution by the optical module 2, preventing the second cup 4 from obstructing the obliquely emitted light. For example, when the first deflection angle α is 20°, the second deflection angle β is set to 20° or greater, ensuring that the light is not blocked by the wall surface of the second cup 4 during emission, thereby ensuring the lighting effect.
[0052] For the optical module 2 in the recessed light of this application, the first deflection angle α ranges from 15° to 30°. Setting a reasonable first deflection angle α prevents light emitted from the lens 23 from being blocked by the housing 11 or the shaft seat 3, while also meeting the requirements for a larger deflection angle for oblique emission. Furthermore, the inner wall of the shaft seat 3 is configured as an outwardly inclined third cup 31. The inclination angle of the wall of the third cup 31 can be optionally adapted to the maximum light output angle on the same side of the lamp tube 1 after rotation, and can optionally be configured as a reflector cup or an anti-glare cup.
[0053] like Figure 7 The structure of the shaft base is shown. Shaft holes 32 are provided on radially opposite sides of the shaft base 3. The two sides of the lamp tube 1 are connected to the shaft base 3 along the shaft holes 32 via a rotating shaft 7, allowing the lamp tube 1 to rotate relative to the shaft base 3. In one embodiment of the present application, the shaft base 3 is further configured as a rotating structure centered on the central axis L1. A mounting ring 5 is sleeved on the outer side of the shaft base 3, allowing the shaft base 3 to rotate along the inner side of the mounting ring 5 about the central axis L1. The mounting ring 5 is adapted to be fixed to the mounting plate. This allows the lamp tube 1 to both swing along the rotation axis L3 and be rotated and adjusted along the central axis L1, increasing the flexibility of adjusting the lighting direction. Furthermore, a boss 33 is provided on the outer circumference of the shaft base 3. The inner wall of the mounting ring 5 is provided with an annular groove 51 corresponding to the boss 33. When the shaft base 3 and the mounting ring 5 are assembled, the boss 33 abuts the inner side of the annular groove 51. The cooperation between the boss 33 and the annular groove 51 serves as a guide and limiter, ensuring the smooth and reliable rotation of the shaft base 3.
[0054] Further optionally, as Figure 7 As shown, a sliding groove 34 is opened along the outer side of the shaft seat 3 on its outer wall, and a limit block 35 is movably provided in the sliding groove 34. The sliding groove 34 extends along the circumference of the shaft seat 3. For example, the arc length of the sliding groove 34 is 1° to 2° relative to the central angle of the central axis L1. The limit block 35 is limitedly movable between the two end surfaces of the sliding groove 34. One end of the limit block 35 extends to the outside of the sliding groove 34. Correspondingly, a limit rib 52 is protruded on the inner wall of the mounting ring 5, so that the limit block 35 is interfered with by the limit rib 52 as it rotates. When the shaft seat 3 rotates, it is interfered by the limiting rib 52 on the inner wall of the mounting ring 5 and moves between the two end faces of the slide groove 34. This limits the rotation angle of the lamp tube 1 to prevent damage to the internal structure or wires due to excessive rotation. Through the curvature setting of the slide groove 34, when the rotating shaft is interfered by the limiting rib 52, a small amount of rotation angle can be increased by setting the length of the slide groove 34, thereby achieving a rotation angle greater than 360° and limited.
[0055] like Figure 8As shown, the mounting ring 5 includes an elastic clip 53 circumferentially arranged on its side. Under the action of elasticity, the elastic clip 53 expands outward and is suitable for supporting on one end face of the mounting plate. For example, when installed on a display cabinet shelf, the elastic clip 53 expands and supports on the upper surface of the display cabinet shelf. Furthermore, the mounting ring 5 also includes an abutment ring surface 54 extending radially outward, which is suitable for abutting on the other end face of the mounting plate. Through the combined action of the elastic clip 53 and the abutment ring surface 54, the mounting ring 5 is fixed to the mounting plate. An elastic clip 36 is provided on the shaft seat 3. The elastic clip 36 includes a clip block 361 protruding radially outward from the shaft seat 3 and an operable pressing end 362. The pressing end 362 is suitable for linking the clip block 361 to move toward or away from the center axis L1, thereby facilitating the rapid installation and removal of the recessed light. For example, during installation, the recessed light is placed in the mounting hole, and the snap-fit block 361 pops out under the action of elasticity and is snapped onto the mounting plate; during disassembly, the pressing end 362 is pressed to retract the snap-fit block 361, and the recessed light can be easily taken out, which is convenient and efficient to operate; alternatively, the mounting ring 5 is first fixed and installed, and the recessed light body is embedded and installed from the inside of the mounting ring 5, with the snap-fit block 361 snapped onto the mounting ring 5.
[0056] According to the above-mentioned recessed lamp structure, the present application provides a corresponding recessed lamp lighting adjustment method, comprising the following steps: opening a mounting hole on the mounting plate, installing the recessed lamp into the mounting hole along the direction of the central axis L1, and connecting the shaft seat 3 to the mounting plate; when the lamp tube 1 is in the initial position, the light outlet 13 of the lamp tube 1 faces the extension direction of the central axis L1, and the light emitted by the optical module 2 in the lamp tube 1 is inclined toward the first side 101 at a first deflection angle α; operating the lamp tube 1 to rotate it relative to the shaft seat 3 along the rotation axis L3, when the lamp tube 1 rotates along the first direction D1, as shown in FIG. Figure 10 (a), the tail end of the lamp tube 1 swings toward the first side 101, and the angle of the emitted light is offset by the first deflection angle α and the rotation angle of the lamp tube 1. When the lamp tube 1 rotates along the second direction D2, as shown in FIG. Figure 10 (b) The tail end of the lamp tube 1 swings toward the second side 102, and the angle of the emitted light is the sum of the first deflection angle α and the rotation angle of the lamp tube 1. This lighting adjustment method can achieve a larger angle of illumination on the first side 101 and a smaller angle of illumination on the second side 102, meeting the application scenario of single-sided accent lighting.
[0057] Due to the structure of the shaft seat in the recessed lamp, the rotational space between the shaft seat and the lamp tube is limited, and the angle of single-sided rotation of the lamp tube is generally within 30°. In a specific embodiment, the lamp tube 1 can rotate forward and backward along the rotation axis L3 in the first direction D1 or the second direction D2, respectively, within an angular range of 20°. After the optical module 2 is installed, the first deflection angle α is set to 20°. In this way, when the lamp tube 1 is rotated to the maximum angle in the first direction D1, the first deflection angle α and the rotation angle of the lamp tube 1 offset each other, so that the angle of the emitted light is in the same direction as the central axis L1, achieving forward lighting along the light outlet 13. When the lamp tube 1 is rotated in the second direction D2, the first deflection angle α and the rotation angle of the lamp tube 1 are superimposed, and the angle of the emitted light can reach a maximum inclination angle of 40° relative to the central axis L1, achieving a larger angle of deflection toward the first side 101. When the recessed lamp set at the above angle is used as a display cabinet light, it can achieve lighting both directly below and in a single lateral direction.
[0058] The recessed light of the present application is suitable for illuminating a target range at a larger angle from the forward direction to the unilateral oblique direction relative to the central axis L1. The optical module 2 is hidden in the lamp tube 1 to avoid glare. The method has simple steps and is easy to operate. Users can flexibly adjust the light angle according to actual lighting needs, and overcome the traditional limitation of adjusting the angle only by rotating the lamp tube 1, thereby achieving precise adjustment.
[0059] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
Claims
1. A recessed light, characterized in that: include: A lamp tube (1) has a central axis (L1) and comprises a housing (11). A mounting cavity (12) is provided in the housing (11), and a light outlet (13) is provided at the end of the housing (11); An optical module (2) includes a bracket (21) and a light source (22) and a lens (23) cooperatively mounted on the bracket (21), wherein the bracket (21) is fixedly mounted in the mounting cavity (12), and the lens (23) is arranged in the light emitting direction of the light source (22) and includes an optical axis (L2) passing through the light source (22) and the lens (23); A shaft seat (3) is rotatably connected to the lamp tube (1), so that the lamp tube (1) rotates relative to the shaft seat (3) along a rotation axis (L3); In a rotation section perpendicular to the rotation axis (L3) and passing through the central axis (L1), the optical axis (L2) and the central axis (L1) form a first deflection angle (α), and the first deflection angle (α) is an acute angle.
2. The recessed light according to claim 1, wherein: The light source (22) comprises a circuit board (221) and an LED chip (222) arranged on the circuit board (221); a light source mounting groove (211) suitable for mounting the circuit board (221) is provided on a first end surface of the bracket (21); a through hole is provided in the middle of the light source mounting groove (211) for light from the LED chip (222) to pass through.
3. The downlight according to claim 1, wherein: The lens (23) includes a positioning block (231) protrudingly formed on the outer wall of the lens (23); the bracket (21) includes a first cup body (213); and a snap-fitting groove (214) for the positioning block (231) to be adapted and installed is correspondingly provided on the inner wall of the first cup body (213).
4. The recessed light according to claim 1, wherein: The mounting cavity (12) is an asymmetric structure relative to the central axis (L1), and a mounting surface (15) is provided in the mounting cavity (12) at an angle relative to one side of the central axis (L1). The optical module (2) is mounted in the housing (11) at an angle along the mounting surface (15), wherein one side of the bracket (21) is positioned to abut against the inner wall of the housing (11) on the same side as the mounting surface (15).
5. The downlight according to claim 1, wherein: The lens (23) is an internal total reflection lens. After passing through the lens (23), the light from the light source (22) is emitted out of the lamp tube (1) in a collimated, nearly collimated or cross-emission manner.
6. The downlight according to claim 1, wherein: The lens (23) comprises a first light incident surface (201) intersecting with an optical axis (L2) and a second light incident surface (202) surrounding the edge of the first light incident surface (201), and further comprises an internal total reflection surface (203) arranged on the outside of the lens (23) relative to the optical axis (L2); the internal total reflection surface (203) and the second light incident surface (202) are arranged correspondingly and are used to totally reflect light entering the second light incident surface (202); and the lens (23) is provided with a first light exit surface (204) corresponding to the first light incident surface (201) and a second light exit surface (205) corresponding to the internal total reflection surface (203) along a light exit direction.
7. The downlight according to claim 6, wherein: Along the rotational cross section, the included angles between the profiles of the internal total reflection surfaces (203) of the lens (23) on both sides of the optical axis (L2) and the optical axis are equal or unequal; wherein, when the included angles are unequal, the included angle between the internal total reflection surface (203) on the side closer to the housing (11) and the optical axis (L2) is smaller.
8. The downlight according to claim 1, wherein: A second cup body (4) is provided in the lamp tube (1) and is connected to the housing (11). The second cup body (4) includes an annular wall surface and is hollow. The second end surface of the bracket (21) away from the light source (22) abuts against one end of the second cup body (4), and the light outlet (13) of the housing (11) is flush with the other end of the second cup body (4).
9. The downlight according to claim 1, wherein: The first deflection angle (α) ranges from 15° to 30°.
10. The downlight according to claim 8, wherein: The wall surface of the second cup body (4) on the side farther from the light source (22) forms a second deflection angle (β) with the central axis (L1) in the rotational cross section, which is greater than or equal to a first deflection angle (α) formed between the optical axis (L2) and the central axis (L1).
11. The downlight according to claim 1, wherein: An elastic clamping member (36) is provided on the shaft seat (3). The elastic clamping member (36) comprises a clamping block (361) protruding radially outward from the shaft seat (3) and an operable pressing end (362). The pressing end (362) is suitable for moving the clamping block (361) in a direction close to or away from the central axis (L1).
12. The downlight according to claim 1, wherein: The shaft seat (3) is configured as a rotating structure centered on the central axis (L1); a mounting ring (5) is sleeved on the outer side of the shaft seat (3); and the shaft seat (3) can rotate along the inner side of the mounting ring (5).
13. The downlight according to claim 12, wherein: A sliding groove (34) is provided on the outer side of the shaft seat (3), and a limiting block (35) is provided in the sliding groove (34). Along the circumference of the shaft seat (3), the limiting block (35) is limitedly movable between the two end surfaces of the sliding groove (34). The limiting block (35) extends to the outer side of the sliding groove (34). A limiting rib (52) is formed on the inner wall of the mounting ring (5). The limiting block (35) is interfered by the limiting rib (52) as it rotates.
14. A method for adjusting the lighting of a recessed lamp, characterized in that: Using the downlight according to any one of claims 1 to 13, and The following steps are involved: A mounting hole is opened on the mounting plate, and the recessed light is installed into the mounting hole along the direction of the central axis (L1), and the shaft seat (3) is connected to the mounting plate; When the lamp tube (1) is in an initial position, the light outlet (13) faces the extension direction of the central axis (L1), and the emitted light is emitted obliquely toward the first side (101) at a first deflection angle (α); The lamp tube (1) is operated to rotate relative to the shaft seat (3) along the rotation axis (L3); when the lamp tube (1) rotates along a first direction (D1), the tail end of the lamp tube (1) swings toward a first side (101), and the angle of the emitted light is offset by the first deflection angle (α) and the rotation angle of the lamp tube (1); when the lamp tube (1) rotates along a second direction (D2), the tail end of the lamp tube (1) swings toward a second side (102) opposite to the first side (101), and the angle of the emitted light is superimposed by the first deflection angle (α) and the rotation angle of the lamp tube (1).