A side-emitting panel light

Abstract

The utility model provides a kind of side light-emitting panel light, it is related to panel light technical field, including lamp holder, junction box, light guide plate, diffusion plate and light bar, diffusion plate is connected with the lamp holder by pressing mechanism, light bar is between lamp holder and diffusion plate, and light bar is fixed to the inner side wall of pressing mechanism, pressing mechanism includes first annular pressing plate, and the outer side wall of pressing plate is symmetrically equipped with several buckling locks, buckling lock is used to clamp lamp holder, annular pressing plate inner side is equipped with locating groove, and diffusion plate is rotatably fixedly connected on pressing mechanism by locating groove. The utility model is fixed to the inner side wall of pressing mechanism by setting above-mentioned structure, buckling lock makes lamp holder and pressing plate structure tightly engage, prevent light bar or diffusion plate from shifting in transportation or use, seamless butt joint lamp holder edge, gap is small, light leakage is less, and diffusion plate, lamp holder and pressing mechanism are simple to install, without many screws or adhesive, diffusion plate, lamp holder can be rotatably detached with pressing mechanism, convenient to clean or replace.

Description

Technical Field

[0001] This utility model relates to the field of panel light technology, and more specifically, to a side-emitting panel light. Background Technology

[0002] With the widespread application of panel lights in commercial lighting, office spaces, hospitals, schools, and other settings, the demand for thin, lightweight, simple-looking, easy-to-install, and low-cost panel lights is constantly increasing. Side-emitting panel lights are widely used due to their smooth surface, thinness, and good energy efficiency. Side-emitting panel lights refer to lights where the light source or light strip is placed on the edge or one side frame of the panel, rather than on the back of the panel.

[0003] However, in the existing technology, this type of panel light has several problems:

[0004] 1. Many products use screws, glue, adhesive, or double-sided tape to fix the diffuser plate or lampshade, which is not secure, cumbersome to install, difficult to disassemble, and inconvenient to repair or replace.

[0005] 2. Light strips are usually attached to the back panel or the edge of the frame. If the fixing structure is not reliable enough or if they are vibrated during transportation and installation, they may shift or fall off, resulting in uneven light distribution, brightness problems or failure to light up.

[0006] 3. If the edge of the diffuser plate does not fit well with the lamp holder, there may be problems such as light leakage, dust entering, and the lamp cover shaking when vibrating; the user experience will be poor and there may be abnormal noises. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a side-emitting panel light. The side-emitting panel light structure of this invention allows the diffuser plate to be quickly and securely connected to the lamp holder; the light strip is reliably positioned and fixed; the structure is lightweight and has good heat dissipation channels, thereby improving durability, safety, and user experience.

[0008] To achieve the above objectives, this utility model adopts the following technical solution: a side-emitting panel light, comprising a lamp holder, a junction box, a light guide plate, a diffuser plate, and a light strip. The light guide plate is disposed inside the lamp holder, the lamp holder has a wiring hole, the junction box is connected to the lamp holder, and the diffuser plate is connected to the lamp holder through a pressing mechanism. The light strip is located between the lamp holder and the diffuser plate, and the light strip is fixed to the inner side wall of the pressing mechanism. The pressing mechanism includes a first annular pressure plate, and a plurality of snap locks are symmetrically provided on the outer side wall of the pressure plate for clamping the lamp holder. A positioning groove is provided on the inner side of the annular pressure plate, and the diffuser plate is rotatably and fixedly connected to the pressing mechanism through the positioning groove.

[0009] Preferably, the positioning groove is provided with a first sealing strip.

[0010] Preferably, the pressing mechanism further includes a second annular pressure plate, the inner and outer sides of which extend towards one end near the lamp holder, forming a first extension plate and a second extension plate respectively, and a first limiting groove is formed between the first extension plate and the second extension plate; the lamp holder is provided with a first circular limiting block and a second circular limiting block on the side near the pressing mechanism, and a second limiting groove is formed between the first circular limiting block and the second circular limiting block; the first circular limiting block is matched and connected to the first limiting groove, and the second extension plate is matched and connected to the second limiting groove.

[0011] Preferably, both the first limiting groove and the second limiting groove are provided with a second sealing strip.

[0012] Preferably, the second extension plate sidewall array is provided with a plurality of first positioning holes, and the second circular limiting block is provided with a plurality of first positioning protrusions that match the first positioning holes.

[0013] Preferably, the upper and lower sides of the first positioning protrusion are both curved surfaces.

[0014] Preferably, the first circular limiting block array is provided with a plurality of clearance gaps, the clearance gaps being located at the corresponding positions of the first positioning protrusions.

[0015] Preferably, the latch lock includes a support member and an elastic structure; one end of the support member is fixed to the elastic structure and the other end is rotatably connected to the first annular pressure plate; the elastic structure includes a fixed end, a bending area, and a hook end; the lamp holder has a plurality of latching protrusions on the side away from the pressing mechanism, and the latching protrusions have a first latching groove and a latching protrusion; the bending area fits into the first latching groove, and the end of the hook end away from the bending area latches with the latching protrusion.

[0016] Preferably, the second circular limiting block has a plurality of second positioning holes, and the second positioning holes are located at the corresponding positions of the bayonet protrusion; the outer side wall of the second extension plate has a plurality of second positioning protrusions, and the second positioning protrusions are matched and connected with the second positioning holes.

[0017] Preferably, the side of the light strip closest to the pressing mechanism is made of a high thermal conductivity metal substrate, and the light strip is attached to the inner wall of the pressing mechanism by thermally conductive adhesive or thermally conductive silicone pad.

[0018] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0019] This utility model provides a side-emitting panel light, in which the diffuser plate is connected to the lamp holder through a pressing mechanism, and the light strip is fixed to the inner wall of the pressing mechanism. The snap-lock design makes the lamp holder and the pressing plate structure tightly engaged, preventing the light strip or diffuser plate from shifting during transportation or use, and ensuring a firm fixation and strong positional stability.

[0020] This utility model provides a side-emitting panel light. The clamping mechanism, featuring a snap-lock and positioning groove, simplifies the installation of the diffuser plate, lamp holder, and clamping mechanism, eliminating the need for numerous screws or adhesives. Furthermore, both the diffuser plate and lamp holder can be rotatably disassembled from the clamping mechanism for easy cleaning or replacement. In addition, the positioning groove and snap-lock structure allow the diffuser plate to rotatably insert into the positioning groove and be locked by the clamping mechanism, seamlessly connecting to the edge of the lamp holder with minimal gaps and light leakage.

[0021] This utility model provides a side-emitting panel light. By setting a sealing strip in the positioning groove, the first limiting groove and the second limiting groove, and the matching of the limiting structure and the clearance gap, the edge is well sealed and the dustproof, waterproof or moisture-proof performance is improved. The structural design is fatigue-resistant and durable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the lamp holder and junction box described in this utility model;

[0023] Figure 2 This is an exploded view of the diffuser plate, the pressing mechanism, and the lamp holder described in this utility model;

[0024] Figure 3 for Figure 2 An exploded view of the structure shown from another perspective;

[0025] Figure 4 for Figure 3 A magnified structural diagram of part B.

[0026] Wherein: 1. Lamp holder; 101. First circular limiting block; 1011. Clearance gap; 102. Second circular limiting block; 1021. First positioning protrusion; 1022. Second positioning hole; 103. Second limiting groove; 104. Bayonet protrusion; 1041. First snap-fit ​​groove; 1042. Snap-fit ​​protrusion; 2. Junction box; 3. Diffuser plate; 4. Lamp strip; 5. Pressing mechanism; 501. First annular pressure plate; 501 1. Buckle lock; 50111. Support component; 50112. Fixed end; 50113. Bending area; 50114. Hook end; 5012. Positioning groove; 5013. First sealing strip; 502. Second annular pressure plate; 5021. First extension plate; 5022. Second extension plate; 50221. First positioning hole; 50222. Second positioning protrusion; 5023. First limiting groove; 503. Second sealing strip. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] Example 1

[0029] like Figure 1-4 As shown, this utility model provides a side-emitting panel light, including a lamp holder 1, a junction box 2, a light guide plate, a diffuser plate 3, and a light strip 4. The light guide plate is disposed inside the lamp holder 1, and the lamp holder 1 has a wiring hole. The junction box 2 is connected to the lamp holder 1. The diffuser plate 3 is connected to the lamp holder 1 through a pressing mechanism 5. The light strip 4 is located between the lamp holder 1 and the diffuser plate 3, and the light strip 4 is fixed to the inner side wall of the pressing mechanism 5. The pressing mechanism 5 includes a first annular pressure plate 501, and the outer side wall of the pressure plate 501 is symmetrically provided with a plurality of snap locks 5011, which are used to clamp the lamp holder 1. The inner side of the annular pressure plate 501 is provided with a positioning groove 5012, and the diffuser plate 3 is rotatably and fixedly connected to the pressing mechanism 5 through the positioning groove 5012.

[0030] The side-emitting panel light provided by this utility model has a junction box 2 connected to a lamp holder 1, and the lamp holder is provided with a wiring hole, which makes the wiring safe and reliable. After the clamping mechanism 5 fixes the diffuser plate 3 and the light strip 4, it is not easy to loosen or shift, reducing the risk of electrical short circuits or light strip damage and improving the safety of product use. The clamping mechanism 5 includes an annular pressure plate and several latches 5011. The latches 5011 can quickly clamp the lamp holder 1 and the diffuser plate 3. The diffuser plate 3 is fixed in the positioning groove 5012 of the clamping mechanism 5 by rotation. This not only makes it difficult for the components of the panel light to loosen in the vertical direction, thereby improving the overall mechanical stability and reliability of the panel light, but also avoids the use of time-consuming components such as screws or bolts. The installation process is simple and can be repeatedly disassembled and assembled, which speeds up production and on-site installation and reduces maintenance difficulty. The light strip 4 is set between the lamp holder 1 and the diffuser plate 3 and is fixed to the inner wall by the clamping mechanism 5, so that the distance between the light source and the diffuser plate 3 is stable, avoiding problems such as light spots, dark areas and glare caused by the offset of the light strip 4 or the loosening of the diffuser plate. Moreover, the diffuser plate 3 makes the light after passing through the light guide plate more uniform and softer, improves the visual effect and reduces eye fatigue.

[0031] It is worth noting that the structure of this invention allows panel lights of different specifications or sizes to be adapted simply by adjusting the size of the annular pressure plate or the position of the latch lock of the clamping mechanism, without requiring a complete redesign of the entire frame. This reduces the diversity requirements of molds or processing, lowers manufacturing costs, improves production efficiency, and expands the market applicability.

[0032] Furthermore, in another embodiment, a first sealing strip 5013 is provided in the positioning groove 5012.

[0033] The first sealing strip, located within the positioning groove 5012, effectively prevents dust, moisture, and other contaminants from entering the lamp fixture through the gaps in the positioning groove 5012. In humid or steamy environments, such as bathrooms and kitchens, its excellent sealing performance prevents internal electrical components from becoming damp, avoiding rust, short circuits, or discoloration / fogging of the light strip / light guide plate due to moisture, thus extending the lamp's lifespan. The sealing strip also prevents external dust from entering the gap between the diffuser plate 3 and the light guide plate, reducing impurity deposition and preventing light from being scattered or blocked by these impurities. This keeps the light path through the diffuser plate and light guide plate clean, resulting in more uniform light distribution, a cleaner-looking surface, and stable brightness and color temperature. Furthermore, the first sealing strip 5013 also acts as a cushioning material, mitigating the friction and loosening of the clamping structure 5 or the positioning groove 5012 during lamp vibration or movement, thus keeping the light source fixed and free of abnormal noise.

[0034] Furthermore, in another embodiment, the pressing mechanism 5 further includes a second annular pressing plate 502. The inner and outer sides of the second annular pressing plate 502 extend towards one end near the lamp holder 1, and respectively form a first extension plate 5021 and a second extension plate 5022. A first limiting groove 5023 is formed between the first extension plate 5021 and the second extension plate 5022. The lamp holder 1 is provided with a first circular limiting block 101 and a second circular limiting block 102 on the side near the pressing mechanism 5. A second limiting groove 103 is formed between the first circular limiting block 101 and the second circular limiting block 102. The first circular limiting block 101 is matched and connected with the first limiting groove 5023, and the second extension plate 5022 is matched and connected with the second limiting groove 103.

[0035] The clamping mechanism 5 adopts a "groove-protrusion" limiting fit method, which eliminates the need for high-precision manual alignment. This ensures that the clamping mechanism 5 is fixed and stable relative to the lamp holder 1 during installation, preventing lateral displacement of the lamp holder 1 and avoiding slippage or misalignment due to transportation vibration or squeezing and vibration during use. It also reduces manual adjustment time, lowers assembly difficulty, and reduces the defect rate caused by human error. Moreover, it ensures that the clamping mechanism is correctly positioned, thereby maintaining the positioning of the first extension plate and the second extension plate. When the light strip 4 is fixed to the inner wall of the clamping mechanism, the gap between it and the diffuser plate 3 remains consistent. This is beneficial for the uniform propagation of light after the light guide plate and diffuser plate are illuminated by the light source, and avoids problems such as light spots, dark areas, or uneven light effects caused by the light strip 4 being skewed or the diffuser plate being tilted.

[0036] Furthermore, in another embodiment, both the first limiting groove 5023 and the second limiting groove 103 are provided with a second sealing strip 503.

[0037] The second sealing strip 503 fills the gaps at the limiting structure, preventing air, moisture, dust, etc., from entering the lamp fixture from the edge of the groove. The double limiting structure, together with the sealing strip, can form a double or multiple sealing barrier, making the lamp fixture more airtight even when used in humid or dusty environments. This reduces the impact of water mist, moisture, or dust on the components of the panel lamp, thereby reducing problems such as electrical short circuits, corrosion, or material deformation. Moreover, the second sealing strip 503 can also act as a cushioning material, reducing the friction and loosening of the clamping structure 5 or lamp holder 1 during lamp fixture vibration or handling, thus keeping the light source fixed and without abnormal noise.

[0038] Furthermore, in another embodiment, the sidewall array of the second extension plate 5022 is provided with a plurality of first positioning holes 50221, and the second circular limiting block 102 is provided with a plurality of first positioning protrusions 1021 that match the first positioning holes 50221.

[0039] During installation, the first circular limiting block 101 is matched and connected to the first limiting groove 5023, and the second extension plate 5022 is matched and connected to the second limiting groove 103 to prevent the lamp holder 1 and the clamping mechanism 5 from moving laterally. Then, the first positioning hole 50221 is matched and connected to the first positioning protrusion 1021 to prevent the lamp holder 1 and the clamping mechanism 5 from rotating relative to each other and becoming loose. Moreover, assembly personnel or automated equipment can more quickly align the lamp holder 1 and the clamping mechanism 5 without excessive repeated measurements or manual fine-tuning. This reduces assembly time, improves production efficiency, and reduces problems such as uneven light distribution, component friction, or loosening caused by assembly errors. At the same time, it makes each product more consistent in terms of structural alignment and appearance flatness. In addition, if the side wall of the lamp holder 1 or the clamping mechanism 5 is misaligned during installation, it may cause uneven gap between the lamp strip 4 and the diffuser plate 36, resulting in uneven light distribution, dark bands or bright spots, or the clamping structure 5 may become loose, causing the lamp strip to be exposed or causing electrical hazards. The mating connection between the first positioning hole 50221 and the first positioning protrusion 1021 helps to further restrict these components to maintain correct positioning after assembly, thereby preventing the aforementioned problems from occurring.

[0040] Furthermore, in another embodiment, the upper and lower sides of the first positioning protrusion 1021 are both arc surfaces. During installation, the first positioning protrusion 1021 can be engaged into the first positioning hole 50221 by pressing, and the lamp holder 1 and the clamping mechanism 5 are fixed together with the snap lock 5011. During disassembly, the snap lock 5011 is opened and the clamping mechanism 5 is pulled lightly. The clamping mechanism 5 can be easily removed without using force. This further strengthens the structural strength of the panel light and improves the stability of the panel light, while facilitating disassembly, replacement and cleaning.

[0041] Furthermore, in another embodiment, the first circular limiting block 101 array is provided with a plurality of clearance gaps 1011, the clearance gaps 1011 being located at corresponding positions of the first positioning protrusion 1021. The clearance gaps 1011 provide compression space when the first positioning protrusion 1021 is installed into the first positioning hole 50221, preventing the first positioning protrusion 1021 from damaging the first circular limiting block 101 when excessive force is applied.

[0042] Further, in another embodiment, the latch lock 5011 includes a support member 50111 and an elastic structure; one end of the support member 50111 is fixed to the elastic structure and the other end is rotatably connected to the first annular pressure plate 501; the elastic structure includes a fixed end 50112, a bending area 50113 and a hook end 50114; the lamp holder 1 is provided with a plurality of latching protrusions 104 on the side away from the pressing mechanism 5, and the latching protrusions 104 are provided with a first latching groove 1041 and a latching protrusion 1042; the bending area 50113 fits into the first latching groove 1041, and the end of the hook end 50114 away from the bending area 50113 is latched with the latching protrusion 1042.

[0043] One end of the support member 50111 is fixed to the elastic structure, and the other end is rotatably connected to the first annular pressure plate 501, so that the elastic structure is firmly connected to the entire pressing mechanism 5. The bending area 50113 and the hook end 50114 of the elastic structure provide elastic restoring force. The hook end is inserted into the snap-fit ​​groove through the deformation of the elastic structure, and then the position is locked by the restoring force. The fixation can be completed without additional tools or fasteners. It has good self-locking performance, fast assembly speed, and reduces labor or assembly costs. The snap lock 5011 can produce a pressing or locking effect at the junction of the snap-fit ​​protrusion 104 and the first snap-fit ​​groove 1041 / snap-fit ​​protrusion 1042, resisting loosening caused by vibration, external impact or temperature change, thereby improving the stability and durability of the panel light structure.

[0044] Furthermore, in another embodiment, the second circular limiting block 102 is provided with a plurality of second positioning holes 1022, and the second positioning holes 1022 are located at the corresponding positions of the bayonet protrusion 104; the outer side wall of the second extension plate 5022 is provided with a plurality of second positioning protrusions 50222, and the second positioning protrusions 50222 are matched and connected with the second positioning holes 1022.

[0045] The second positioning hole 1022 is located at the corresponding position of the bayonet boss 104. During installation, the second positioning protrusion 50222 on the clamping mechanism 5 matches and connects with the second positioning hole 1022, so that the buckle lock 5011 can accurately position the bayonet boss 104, making installation easier.

[0046] Furthermore, in another embodiment, the side of the light strip 4 closest to the pressing mechanism 5 is made of a high thermal conductivity metal substrate, and the light strip 4 is attached to the inner wall of the pressing mechanism 5 by thermally conductive adhesive or thermally conductive silicone pad.

[0047] The high thermal conductivity metal substrate can be made of aluminum alloy, copper, metal composite substrate, etc., and has a high thermal conductivity, which can quickly transfer the heat generated by the light strip 4 to the metal substrate. The thermally conductive adhesive or thermally conductive silicone pad not only provides an adhesive effect, bonding the light strip 4 to the inner wall of the pressing mechanism 5, but also reduces the thermal resistance between the metal substrate and the bottom of the light strip, thereby allowing heat to be smoothly conducted to the inner wall of the pressing mechanism 5 and enhancing the overall heat dissipation function.

[0048] Working principle:

[0049] The light strip 4 is placed inside the lamp holder 1 to emit light. The light from the light strip 4 enters the light guide plate from the side. The light guide plate expands and distributes the light incident from the edge to the entire front surface of the panel through its internal structure. A diffuser plate 3 is provided in front to further soften the light. The light output from the light guide plate is diffused or diffused to make the light evenly transmitted in the direction seen by the user, reducing glare or bright spots. The diffuser plate 3 is connected to the lamp holder 1 through the clamping mechanism 5. At the same time, the light strip 4 is fixed to the inner wall of the clamping mechanism. When the light strip 4 emits light, it generates heat. Through the contact between the bottom of the light strip 4 and the clamping structure 5 and the frame of the lamp holder 1, the heat conduction channel transfers the heat to the lamp holder 1 and the heat dissipation path on the back, and then dissipates it into the air. The latch lock 5011 is symmetrically engaged with the frame of the lamp holder 1. The clamping mechanism 5 provides clamping force to keep the entire diffuser plate 3 and the clamping structure 5 in place without loosening.

[0050] During installation, fix the lamp holder 1 to the ceiling or light trough. Connect the junction box 2 to the building power supply through the wiring hole in the lamp holder. Attach the light strip 4 to the inner wall of the clamping mechanism 5, ensuring tight contact for heat dissipation. Insert or align the edge of the diffuser plate 3 into or with the positioning groove 5012 of the clamping mechanism 5. Through its sliding and rotating motion, the diffuser plate 3 enters the positioning groove 5012. Use the several latches 5011 on the first annular pressure plate 501 of the clamping mechanism to lock the frame of the lamp holder 1, ensuring a tight fit between the clamping mechanism 5 and the lamp holder 1. At this point, the diffuser plate 3 is correctly placed and positioned by the positioning groove 5012, preventing lateral loosening. Install the limiting block, extension plate, positioning hole, and protrusion to ensure the diffuser plate 3 is correctly aligned and its edges are well-sealed in the rotating or sliding fixed state. Install the sealing strip in the positioning groove and limiting groove to prevent dust and light leakage.

[0051] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0052] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A side-emitting panel light, comprising a lamp holder (1), a junction box (2), a light guide plate, a diffuser plate (3), and a light strip (4), wherein the light guide plate is disposed inside the lamp holder (1), the lamp holder (1) has a wiring hole, and the junction box (2) is connected to the lamp holder (1), characterized in that: The diffuser plate (3) is connected to the lamp holder (1) through the clamping mechanism (5); the lamp strip (4) is located between the lamp holder (1) and the diffuser plate (3), and the lamp strip (4) is fixed to the inner wall of the clamping mechanism (5); the clamping mechanism (5) includes a first annular pressure plate (501), and a plurality of snap locks (5011) are symmetrically provided on the outer wall of the pressure plate (501), and the snap locks (5011) are used to clamp the lamp holder (1); the inner side of the annular pressure plate (501) is provided with a positioning groove (5012), and the diffuser plate (3) is rotatably and fixedly connected to the clamping mechanism (5) through the positioning groove (5012).

2. The side-emitting panel light according to claim 1, characterized in that: The positioning groove (5012) is provided with a first sealing strip (5013).

3. The side-emitting panel light according to claim 1, characterized in that: The pressing mechanism (5) further includes a second annular pressure plate (502), the inner and outer sides of the second annular pressure plate (502) extending towards one end near the lamp holder (1), and forming a first extension plate (5021) and a second extension plate (5022) respectively. A first limiting groove (5023) is formed between the first extension plate (5021) and the second extension plate (5022). The lamp holder (1) is provided with a first circular limiting block (101) and a second circular limiting block (102) on the side near the pressing mechanism (5). A second limiting groove (103) is formed between the first circular limiting block (101) and the second circular limiting block (102). The first circular limiting block (101) is matched and connected with the first limiting groove (5023), and the second extension plate (5022) is matched and connected with the second limiting groove (103).

4. The side-emitting panel light according to claim 3, characterized in that: Both the first limiting groove (5023) and the second limiting groove (103) are provided with a second sealing strip (503).

5. The side-emitting panel light according to claim 4, characterized in that: The second extension plate (5022) has a plurality of first positioning holes (50221) arranged on its side wall array, and the second circular limiting block (102) has a plurality of first positioning protrusions (1021) that match the first positioning holes (50221).

6. The side-emitting panel light according to claim 5, characterized in that: The first positioning protrusion (1021) has curved surfaces on both the upper and lower sides.

7. The side-emitting panel light according to claim 5, characterized in that: The first circular limiting block (101) array is provided with a plurality of clearance gaps (1011), and the clearance gaps (1011) are located at the corresponding positions of the first positioning protrusion (1021).

8. The side-emitting panel light according to claim 5, characterized in that: The latch lock (5011) includes a support member (50111) and an elastic structure; one end of the support member (50111) is fixed to the elastic structure and the other end is rotatably connected to the first annular pressure plate (501); the elastic structure includes a fixed end (50112), a bending area (50113) and a hook end (50114); the lamp holder (1) is provided with a plurality of latching bosses (104) on the side away from the pressing mechanism (5), and the latching bosses (104) are provided with a first latching groove (1041) and a latching protrusion (1042); the bending area (50113) fits into the first latching groove (1041), and the end of the hook end (50114) away from the bending area (50113) is latched with the latching protrusion (1042).

9. The side-emitting panel light according to claim 8, characterized in that: The second circular limiting block (102) has a plurality of second positioning holes (1022), and the second positioning holes (1022) are located at the corresponding positions of the bayonet protrusion (104); the outer wall of the second extension plate (5022) is provided with a plurality of second positioning protrusions (50222), and the second positioning protrusions (50222) are matched and connected with the second positioning holes (1022).

10. The side-emitting panel light according to any one of claims 1-9, characterized in that: The side of the light strip (4) near the pressing mechanism (5) is made of a high thermal conductivity metal substrate, and the light strip (4) is attached to the inner wall of the pressing mechanism (5) by thermally conductive adhesive or thermally conductive silicone pad.

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