Down lamp

Abstract

The utility model provides a down lamp which comprises a rear cover, a first annular side wall and a second annular side wall, the rear cover comprises a bottom face and a first annular side wall connected with the periphery of the bottom face, and the rear cover is made of metal materials; the face ring comprises a second annular side wall extending in the axial direction, and the first annular side wall wraps the outer side of the second annular side wall and makes contact with the outer wall face of the second annular side wall; the surface ring is made of a plastic material; and the flexible lamp strip is fixed on the inner side wall surface of the second annular side wall. According to the utility model, through the composite structure that the plastic surface ring is wrapped by the metal rear cover, the high thermal conductivity of a metal material is brought into full play, meanwhile, the overall cost is reduced by utilizing the plastic material, the dual technical bottlenecks of high cost of an all-metal scheme and poor heat dissipation of an all-plastic scheme are overcome, and collaborative optimization of heat dissipation performance and manufacturing cost is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lighting equipment technical field, specifically relates to a down lamp. BACKGROUND

[0002] As a kind of embedded ceiling downlight, LED downlight is widely used in the local lighting field (such as bedroom, living room, bathroom, etc.) of residential and commercial space due to its soft light, high space utilization rate and other characteristics. Through the combination design of light source, light guide plate and diffusion plate, it can realize diversified light effect, reduce space compression at the same time, create a warm atmosphere, and has become an important solution for modern indoor lighting.

[0003] The current market mainstream embedded ultra-thin downlight generally adopts all-metal material structure (such as aluminum rear cover and face ring), mainly relying on the high thermal conductivity of metal material to realize passive heat dissipation of LED light source. However, such scheme has significant defects: metal parts need to rely on screw fixing for connection, not only increases the number of parts, but also makes the production and assembly process complex, and the labor cost increases significantly. To reduce manufacturing cost, some manufacturers try to use all-plastic material instead of metal, but the thermal conductivity of plastic is very low (usually less than 1 W / m·K), which is difficult to meet the heat dissipation demand of LED lamp beads, and is prone to problems such as accelerated light decay and shortened life. In addition, the structure strength of plastic parts is weak, and it is difficult to realize reliable screw-free assembly. INVENTION CONTENTS

[0004] The utility model provides a down lamp for solving the technical problem that heat dissipation performance, manufacturing cost and assembly efficiency cannot be considered in prior art.

[0005] The utility model provides a down lamp, including rear cover, the rear cover includes bottom surface and the first annular side wall connected with the bottom surface periphery, the rear cover is metal material quality;Face ring, the face ring includes the second annular side wall extending in the axial direction, the first annular side wall is wrapped in the outside of the second annular side wall, and the outer wall surface of second annular side wall is contacted;The face ring is plastic material quality;Flexible lamp strip, the flexible lamp strip is fixed in the inner side wall surface of the second annular side wall.

[0006] In an embodiment of the utility model, it further includes: the free end of the first annular side wall forms a hem outward, a plurality of spaced-apart notches are provided on the hem;The outer side wall surface of the second annular side wall is provided with the protrusion corresponding to the number and position of the notches, the protrusion can be embedded in the notch to form a snap connection, so that the hem and the second annular side wall are fixed.

[0007] In an embodiment of the utility model, the protruding block includes a first protruding block and a second protruding block, a lower surface of the first protruding block is provided with a horizontal clamping surface to abut against a bottom surface of the notch, and an upper surface of the second protruding block is provided with a horizontal clamping surface to abut against a top surface of the notch.

[0008] In an embodiment of the utility model, the first protruding block and the second protruding block are alternately arranged along a circumferential direction of the second annular side wall to form a double clamping limiting structure.

[0009] In an embodiment of the utility model, at least one pair of spring fixing structures are further included, the spring fixing structure includes: a protruding part integrally formed on a bottom plate of the rear cover; a plug piece arranged in parallel with the protruding part and forming an insertion channel with the protruding part; and a hanging buckle arranged at an end of the protruding part at an outlet of the insertion channel; wherein a spring arm of a spring can pass through the insertion channel and be hung on an end surface of the hanging buckle to fix the spring to the rear cover.

[0010] In an embodiment of the utility model, an arc-shaped notch is arranged at the plug piece close to the outlet of the insertion channel, an arc of the arc-shaped notch matches a bending path of the spring arm, and the arc-shaped notch is used for guiding the spring arm to smoothly pass through the insertion channel.

[0011] In an embodiment of the utility model, the hanging buckle includes an inclined guide surface and a limiting end surface, the inclined guide surface extends from the outlet of the insertion channel to the limiting end surface in an inclined manner, and the inclined guide surface is used for guiding the spring arm of the spring to slide into and be clamped to the limiting end surface in an inclined direction.

[0012] In an embodiment of the utility model, a pair of plug wires are further included, the pair of plug wires include a tail clamp and a wire body; the tail clamp is embedded in a pressing region between the first annular side wall and the second annular side wall and is fixed by pressing force of the first annular side wall and the second annular side wall.

[0013] In an embodiment of the utility model, a light guide plate is further included, the light guide plate is arranged at a front end in a light emitting direction of the flexible lamp strip and is fixedly connected to an inner side wall surface of the second annular side wall, and the light guide plate is used for uniformly guiding light emitted by the flexible lamp strip to the light emitting direction; a diffusion plate is arranged between the flexible lamp strip and the light guide plate and is fixedly connected to the inner side wall surface of the second annular side wall, and the diffusion plate is used for scattering and uniform light processing of the light emitted by the flexible lamp strip.

[0014] In an embodiment of the utility model, a reflective paper is further included, the reflective paper is arranged at a rear end in the light emitting direction of the flexible lamp strip and is fixedly connected to the inner side wall surface of the second annular side wall, and the reflective paper is used for reflecting light scattered to the back of the flexible lamp strip to the light guide plate or the diffusion plate.

[0015] The utility model discloses a down lamp has the following beneficial effects:

[0016] (1) through the composite structure of the metal back cover and the plastic face ring, the high thermal conductivity of the metal material is fully played (heat dissipation path: lamp strip plastic face ring metal back cover), and the overall cost is reduced by using the plastic material, which overcomes the double technical bottlenecks of high cost of all-metal scheme and poor heat dissipation of all-plastic scheme, and realizes the synergistic optimization of heat dissipation performance and manufacturing cost.

[0017] (2) based on the buckle connection structure and spring screw-free fixing design, the traditional screw assembly mode is completely replaced. Among them, the buckle structure realizes the quick locking and anti-loosening of metal and plastic parts through the double limiting of the protrusion and the notch; the spring hanging buckle structure realizes the precise guidance and self-locking of the spring through the inclined guide surface and the arc-shaped notch.

[0018] (3) through the flexible lamp strip indirect fixation in the plastic face and the plug-in wire tail clamp pressure integrated design, the lamp strip and the metal back cover are not in direct contact, and the natural insulation of the plastic face ring is used to avoid the risk of electric leakage. In addition, the tail clamp is embedded in the metal / plastic pressure integrated area, avoiding the short circuit hidden danger of exposed wire.

[0019] (4) through the horizontal plug-in wire layout and the metal back cover integrated stamping structure, the cavity occupation of the traditional vertical wiring and the independent spring seat is eliminated, the height of the whole lamp is compressed, and the limit ultra-thin demand of the embedded lamp is met. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The explosion diagram of the down lamp described in the embodiment of the utility model is shown.

[0021] Figure 2 The cross-sectional view of the first annular side wall surrounding the second annular side wall described in the embodiment of the utility model is shown.

[0022] Figure 3 The spring fixing structure schematic diagram described in the embodiment of the utility model is shown.

[0023] Figure 4 The spring fixing structure schematic diagram of the spring not hanging described in the embodiment of the utility model is shown.

[0024] Figure 5 The spring fixing structure schematic diagram of the hanging spring described in the embodiment of the utility model is shown.

[0025] Figure 6 The structure schematic diagram of the plug-in wire fixation described in the embodiment of the utility model is shown.

[0026] ELEMENT NUMBER EXPLANATION

[0027] 1 back cover

[0028] 11 Bottom

[0029] 12 First annular sidewall

[0030] 2-face ring

[0031] 21 Second annular sidewall

[0032] 3 Flexible LED strip

[0033] 4. Gap

[0034] 5 bumps

[0035] 61. Protrusion

[0036] 62 inserts

[0037] 621 Arc-shaped notch

[0038] 63 Hooks

[0039] 631 Inclined Guide Surface

[0040] 632 Limiting end face

[0041] 64 Springs

[0042] 65 Spring Arm

[0043] 7 pairs of wires

[0044] 71 tail card

[0045] 72 lines

[0046] 8 Light guide plates

[0047] 9. Diffuser plate

[0048] 10 Reflective Paper Detailed Implementation

[0049] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0050] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0051] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0052] The following embodiments of this utility model disclose a downlight, providing a novel downlight structure that balances heat dissipation performance, manufacturing cost, and assembly efficiency, while ensuring the ultra-thinness and safety of the lamp and overcoming the technical limitations of using only metal and plastic materials.

[0053] See Figure 1 This embodiment provides a downlight, mainly comprising a metal back cover 1, a plastic face ring 2, and a flexible light strip 3. The structure and assembly relationship of each component are described in detail below with reference to the accompanying drawings:

[0054] The back cover 1 includes a bottom surface 11 and a first annular sidewall 12 connected to the periphery of the bottom surface. The back cover 1 is made of metal.

[0055] Specifically, the back cover 1 is an integral structure formed by stamping aluminum alloy, including a circular bottom surface and a first annular sidewall 12 extending vertically upward from the periphery of the bottom surface.

[0056] In some embodiments, the top end of the first annular sidewall 12 is folded outward to form an annular rolled edge, and the folding direction of the rolled edge forms an acute angle with the plane where the bottom surface 11 is located, thereby forming an assembly guide slope.

[0057] The rolled edge has multiple rectangular notches 4 evenly distributed around its circumference. The notches 4 penetrate the inner and outer walls of the rolled edge, and the bottom of the notches 4 extends to the top edge of the first annular sidewall 12. The width of the notches 4 is slightly larger than the width of the protrusions 5 described later, in order to provide space for assembly tolerance compensation.

[0058] The face ring 2 includes an axially extending second annular sidewall 21, and the first annular sidewall 12 wraps around the outside of the second annular sidewall 21 and contacts the outer wall surface of the second annular sidewall 21; the face ring 2 is made of plastic.

[0059] For details, please refer to Figure 2 The face ring 2 is a ring-shaped component injection molded from PBT engineering plastic, including a horizontally extending annular base and a second annular sidewall 21 extending axially upward from the outer edge of the base. The outer diameter of the second annular sidewall 21 is smaller than the inner diameter of the first annular sidewall 12, and the two form a clearance fit, so that the second annular sidewall 21 can be nested into the inner side of the first annular sidewall 12.

[0060] In some embodiments, two sets of protrusions 5 corresponding to the number and position of the notches 4 are provided on the outer wall surface of the second annular sidewall 21.

[0061] The first protrusion is located at the lower part of the outer wall surface, and its lower surface is provided with a horizontal snap-fit ​​surface; the second protrusion is located at the upper part of the outer wall surface, and its upper surface is provided with a horizontal snap-fit ​​surface.

[0062] Furthermore, the first and second protrusions are alternately distributed circumferentially, and the axial spacing of each group of protrusions matches the height of the notch 4. The top of the protrusion 5 is provided with a guide slope to guide the rolled edge to slide into the snap-fit ​​position during assembly.

[0063] During assembly, the second annular sidewall 21 of the face ring 2 is inserted into the inner side of the first annular sidewall 12 of the rear cover 1, and the notch 4 of the rolled edge is aligned with the protrusion 5 by pressing. As the rolled edge is pressed down along the guide slope, the horizontal engaging surface of the first protrusion abuts against the bottom surface of the notch 4, and the horizontal engaging surface of the second protrusion abuts against the top surface of the notch 4, forming a bidirectional axial limit. At this time:

[0064] The inner wall surface of the first annular sidewall 12 and the outer wall surface of the second annular sidewall 21 form a surface contact, constituting a heat conduction channel from the face ring 2 to the rear cover 1; the inner wall of the rolled edge and the outer wall surface of the second annular sidewall 21 generate an elastic pressing force, further eliminating assembly gaps.

[0065] In this implementation, the alternating first and second protrusions form a double-locking mechanism, with bidirectional locking forces offsetting displacement caused by thermal expansion and contraction or vibration. Furthermore, the alternating circumferential arrangement ensures even distribution of assembly stress, preventing localized creep in the plastic parts. Additionally, the bidirectional locking allows for slight dimensional deviations between the face ring and the back cover without affecting the locking mechanism.

[0066] The flexible light strip 3 is fixed to the inner wall surface of the second annular sidewall 21.

[0067] Specifically, the flexible light strip 3 is adhered to the inner wall of the second annular sidewall 21 using a high-temperature resistant adhesive layer. Because the plastic material of the face ring 2 has natural insulation properties, there is no direct contact between the flexible light strip 3 and the metal back cover 1, completely eliminating the risk of electrical leakage.

[0068] The heat dissipation path is as follows: the heat generated by the flexible light strip 3 is conducted to the plastic face ring 2 through the adhesive layer, then to the metal back cover 1 through the contact interface between the face ring 2 and the back cover 1, and finally dissipated by air convection through the bottom surface 11 and the first annular sidewall 12 of the back cover 1.

[0069] In this implementation, the high thermal conductivity of metal materials is fully utilized by using a composite structure in which a metal back cover surrounds a plastic face ring. At the same time, the overall cost is reduced by using plastic materials. This overcomes the dual technical bottlenecks of high cost in all-metal solutions and poor heat dissipation in all-plastic solutions, and achieves synergistic optimization of heat dissipation performance and manufacturing cost.

[0070] In some implementations, please refer to Figures 3-5 The bottom plate of the rear cover 1 is integrally stamped with at least one pair of spring fixing structures for installing elastic clamping springs (such as butterfly springs or torsion springs) to achieve quick fixing of the downlight to the ceiling. Each set of spring fixing structures includes: a protrusion 61, an insert 62, and a hook 63.

[0071] The protrusion 61 is integrally formed on the bottom plate of the rear cover 1. It is a strip-shaped protrusion extending vertically from the surface of the bottom plate. The length direction of the protrusion 61 is parallel to the extension direction of the spring arm 65. The two side walls are connected to the bottom plate through an arc transition surface to enhance the bending strength of the structure.

[0072] The insert 62 is a metal sheet arranged parallel to the protrusion 61, with its top bent toward the protrusion 61 to form an arc-shaped guide surface. The gap between the insert 62 and the protrusion 61 forms an insertion channel for the spring arm 65, with the width at the entrance of the channel being greater than that at the exit, forming a tapered guide structure.

[0073] In some embodiments, an arc-shaped notch 621 is provided on the insert 62 near the outlet of the insertion channel, and the curvature of the arc-shaped notch 621 matches the bending path of the spring arm 65. When the spring arm 65 passes through the channel, the inner wall of the arc-shaped notch 621 is in continuous contact with the outer surface of the spring arm 65, guiding the spring arm 65 to move smoothly along a preset bending trajectory and avoiding jamming.

[0074] The hook 63 is located at the end of the protrusion 61 at the outlet of the insertion channel; wherein the spring arm 65 can pass through the insertion channel and be hooked on the end face of the hook 63 to fix the spring 64 to the back cover 1.

[0075] In some embodiments, the hook 63 includes an inclined guide surface 631 and a limiting end surface 632. The inclined guide surface 631 is an inclined surface that extends inclinedly from the insertion channel outlet toward the base plate. The inclination angle causes the spring arm 65 to slide down naturally under the action of gravity or assembly thrust. The limiting end surface 632 is located at the end of the inclined guide surface 631 and is a plane perpendicular to the base plate. Its height matches the thickness of the bent part of the spring arm 65, forming a surface contact abutment.

[0076] During assembly, the spring arm 65 is pushed in through the insertion channel. The spring arm 65 first contacts the arc-shaped guide surface of the insert 62 and the arc-shaped transition portion of the protrusion 61, and automatically slides into the channel under their combined guidance. When the front end of the spring arm 65 touches the inclined guide surface 631, it slides along the inclined surface until the bent portion engages with the limiting end face 632. At this point:

[0077] The inner wall of the arc-shaped notch 621 maintains continuous contact with the outer side of the spring arm 65, restricting the lateral displacement of the spring arm 65; the limiting end face 632 and the contact surface of the bent part generate a normal constraint force, preventing the spring 64 from axially retracting; the inner side wall of the protrusion 61 fits against the inner side of the spring arm 65, forming a circumferential fixation.

[0078] In this implementation, the spring is "push-in and locked" through the coordinated guidance of a tapered channel, an arc-shaped notch, and an inclined guide surface, improving installation efficiency. Furthermore, the overall height of the spring fixing structure is flush with the side wall of the rear cover, avoiding the increased overall lamp thickness caused by traditional independent spring seats and meeting the ultra-thin requirements of downlights.

[0079] In some implementations, please refer to Figure 6 The downlight also includes a connector 7 for connecting an external power source to the flexible light strip 3. The connector 7 includes a tail clip 71 and a wire body 72, and its fixing method is designed in conjunction with the assembly structure of the metal back cover 1 and the plastic face ring 2.

[0080] Specifically, the tail clip 71 is a plate-shaped component injection molded from insulating material (such as PA66 or PVC). The tail clip 71 is embedded in the pressing area between the first annular sidewall 12 of the metal back cover 1 and the second annular sidewall 21 of the plastic face ring 2. When the back cover 1 and the face ring 2 are locked together by the snap-fit ​​structure, the inner wall surface of the first annular sidewall 12 and the outer wall surface of the second annular sidewall 21 generate radial pressing force to clamp and fix the tail clip 71 without the need for additional screws or adhesives.

[0081] The cable 72 extends laterally from the tail clip 71, with its extension direction parallel to the downlight axis (i.e., horizontal cable exit), avoiding the increase in overall lamp height caused by traditional vertical cable exit. The insulation layer of the cable 72 is injection molded into a single structure with the tail clip 71, ensuring that the cable 72 has no direct contact with the metal back cover 1, achieving double insulation protection.

[0082] In some implementations, the following methods are used Figure 1 The optical system of the downlight includes a flexible light strip 3, a light guide plate 8, and a diffuser plate 9, and their structural relationship and function are as follows:

[0083] The light guide plate 8 is located at the front end of the light-emitting direction of the flexible light strip 3 (i.e., near the opening of the lamp), and is fixed to the inner wall of the second annular sidewall 21 of the plastic surface ring 2, and is used to convert the point light source into uniform surface light.

[0084] The diffuser plate 9 is disposed between the flexible light strip 3 and the light guide plate 8 and is fixed to the inner wall of the face ring 2. It is used to scatter the direct light from the LED and to homogenize the directionality of the light.

[0085] Furthermore, in some embodiments, the downlight further includes: reflective paper 10, disposed at the rear end of the flexible light strip 3 in the light-emitting direction (i.e., near the back cover side), and fixed to the inner wall of the face ring 2.

[0086] For example, the reflective paper 10 is an aluminized PET film, used to reflect the light scattered by the LED to the light-incident side of the light guide plate 8 or the diffuser plate 9, thereby improving the light efficiency.

[0087] In summary, this utility model relates to a downlight that uses a metal back cover to cover a plastic face ring. The annular sidewall of the back cover and the sidewall of the face ring form a surface contact heat dissipation interface, allowing for rapid heat dissipation through the metal material while reducing the overall cost of the lamp by using plastic. The rolled edge of the metal back cover has a notch, forming a double-locking mechanism with the protrusions on the sidewall of the face ring, replacing traditional screw fixation. The spring fixing structure achieves spring-push-in self-locking through an integrally stamped protrusion, insert, and hook, improving assembly efficiency. The cable end clip is embedded in the gap between the back cover and the face ring, using radial clamping force for fixation, and the lateral cable exit design reduces the overall height of the lamp.

[0088] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0089] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A downlight, characterized in that, include: The back cover includes a bottom surface and a first annular sidewall connected to the periphery of the bottom surface, and the back cover is made of metal. At least one pair of spring fixing structures are integrally stamped on the bottom plate of the rear cover to fix the downlight to the ceiling; the free end of the first annular sidewall forms a rolled edge, and the rolled edge is provided with multiple spaced notches; The face ring includes an axially extending second annular sidewall, with the first annular sidewall wrapping around the outer side of the second annular sidewall and contacting the outer wall surface of the second annular sidewall; the face ring is made of plastic; the outer wall surface of the second annular sidewall is provided with protrusions corresponding to the number and position of the notches, the protrusions being able to embed into the notches to form a snap-fit ​​connection, so that the rolled edge is fixed to the second annular sidewall; the inner wall surface of the first annular sidewall and the outer wall surface of the second annular sidewall form a surface contact; A flexible light strip, which is fixed to the inner sidewall of the second annular sidewall.

2. The downlight according to claim 1, characterized in that, The protrusion includes a first protrusion and a second protrusion. The lower surface of the first protrusion is provided with a horizontal engaging surface to abut against the bottom surface of the notch, and the upper surface of the second protrusion is provided with a horizontal engaging surface to abut against the top surface of the notch.

3. The downlight according to claim 2, characterized in that, The first protrusion and the second protrusion are alternately arranged at intervals along the circumferential direction of the second annular sidewall to form a double snap-fit ​​limiting structure.

4. The downlight according to claim 1, characterized in that, The spring fixing structure includes: The protrusion is integrally formed on the bottom plate of the rear cover; An insert is arranged parallel to the protrusion and forms an insertion channel with the protrusion; A hook is provided at the end of the protrusion at the outlet of the insertion channel; wherein the spring arm can pass through the insertion channel and be hooked on the end face of the hook to fix the spring to the back cover.

5. The downlight according to claim 4, characterized in that, The insert has an arc-shaped notch near the outlet of the insertion channel. The curvature of the arc-shaped notch matches the bending path of the spring arm, which guides the spring arm to pass smoothly through the insertion channel.

6. The downlight according to claim 4, characterized in that, The hook includes an inclined guide surface and a limiting end face. The inclined guide surface extends inclinedly from the outlet of the insertion channel toward the limiting end face, and is used to guide the spring arm of the spring to slide in along the inclined direction and engage with the limiting end face.

7. The downlight according to claim 1, characterized in that, Also includes: The connector includes a tail clip and a cable body; the tail clip is embedded in the pressing area between the first annular sidewall and the second annular sidewall, and is fixed by the clamping force of the first annular sidewall and the second annular sidewall.

8. The downlight according to claim 1, characterized in that, Also includes: A light guide plate is disposed at the front end of the light-emitting direction of the flexible light strip and is fixedly connected to the inner side wall of the second annular side wall, for uniformly guiding the light emitted by the flexible light strip in the light-emitting direction. A diffuser plate is disposed between the flexible light strip and the light guide plate, and is fixedly connected to the inner wall of the second annular sidewall, for scattering and homogenizing the light emitted by the flexible light strip.

9. The downlight according to claim 8, characterized in that, Also includes: The reflective paper is located at the rear end of the flexible light strip in the light-emitting direction and is fixedly connected to the inner side wall of the second annular sidewall. It is used to reflect the light scattered by the flexible light strip to the light guide plate or the diffuser plate.

Images